LIST OF PUBLICATIONS

 Book Chapters

1. R. B. Rakhi “Preparation and properties of manipulated carbon nanotubes composites and applications” (https://doi.org/10.1016/B978-0-08-102509-3.00016-X ) in book entitled “Nanocarbon and its Composites: Preparation, Properties and Applications” Ist Edition, Anish Khan, Mohammad Jawaid, Inamuddin, Abdullah M. Ahmed Asiri, Editors (2018) ISBN-9780081025093, published by Elsevier.

​2. P.M. Anjana, R.B. Rakhi, "Pseudocapacitors"(DOI:  https://doi.org/10.21741/9781644900499-7) in the book titled "Supercapacitor Technology" (2019) , Volume 61, pp 141-170. (ISBN 978-1-64490-048-2) Published by Materials Research Foundations

3.R. Shilpa, K. S. Sibi, S. R. Sarath Kumar, R. K. Pai, R.B. Rakhi, Electrocatalysts for Hydrogen Evolution Reaction, DOI: https://doi.org/10.1002/9781119829584.ch5, in the book entitled “Materials for Hydrogen Production, Conversion, and Storage”edited by Inammuddin Tariq Altalhi, Sayed Mohammed Adnan, Mohammed A. Amin",(2023), PrintISBN:9781119829348, Online ISBN:9781119829584 DOI:10.1002/9781119829584, published by Wiley Scrivener Publishing LLC.

4. M. Manuraj, Visakh V. Mohan, R.B. Rakhi*, An Overview on the Recent Developments in Graphene-MoS2 Based Supercapacitors,  in the book entitled “Carbon and TMDs Nanomaterials for Energy Applications”edited by Ashish Kumar Mishra",(2024), ISBN: 978-981-12-8339-0 (hardcover)  DOI: https://doi.org/10.1142/13596,     published by World Scientific Publishing Company. 

​International Journals  

h-index = 45 (Scopus Author ID: 17435530800)

 Google scholar id: https://scholar.google.co.in/citations?user=wxWW0zMAAAAJ&hl=en

1. R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, (2007) Effect of purity and substrate on field emission properties of multi-walled carbon nanotubes. Nano scale Research Letters, 2, 331-336. 

2. R.B. Rakhi, A. Leela Mohana Reddy, M.M. Shaijumon, K. Sethupathi and S. Ramaprabhu, (2008) Electron field emitters based on multiwalled carbon nanotubes decorated with nanoscale metal clusters. Journal of Nanoparticle Research, 10, 179-189. 

3. R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, (2008) Electron field emission properties of conducting polymer coated multi walled carbon nanotubes. Applied Surface Science, 254, 6770- 6774. 

4. R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, (2008) Synthesis and Hydrogen adsorption properties of carbon nanotubes. International Journal of Hydrogen Energy, 33, 381-386. 

5. R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, (2008) Field emission from carbon nanotubes grown on a graphitized carbon fabric compared with the same fabric with a spin coating of nanotubes. Carbon, 46, 1656-1663. 

6. R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, (2008) Synthesis and field emission properties of polymer/metal dispersed multi walled carbon nanotubes. Nanotrends, 5, 1-9. 

7. R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, (2009) Electron field emitters based on multiwalled carbon nanotubes coated with conducting polymer/ metal/ metal-oxide composites. Journal of Experimental Nanoscience, 4, 67-76. 

8. R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, (2009) A glucose biosensor based on deposition of glucose oxidase on to crystalline gold nanoparticle modified carbon nanotube electrode. Journal of Physical Chemistry B, 113(10), 3190-3194.   

9. R.B. Rakhi, X. Lim, X. Gao, K. Sethupathi, S. Ramaprabhu and C.H. Sow (2010) Electron field emission from magnetic materials encapsulated multi walled carbon nanotubes. Applied Physics A, 98, 195-202.  

10. T. T. Baby, S. S. Jyothirmayee Aravind; T. Arockiadoss, R.B. Rakhi and S. Ramaprabhu; (2010) Metal decorated grapheme sheets as immobilization matrix for amperometric Glucose biosensor, Sensors & Actuators: B, 145(1), 71-77.  

11. W. Chen, R.B. Rakhi, M. Liangbing, Xing Xie, Y. Cui, and H.N. Alshareef (2011) “High Performance Supercapacitors on a Sponge”, Nano Letters, 11, 5165–5172.  

12. R.B. Rakhi and H.N. Alshareef, (2011) “Enhancement of the energy storage properties of supercapacitors using graphene nanosheets dispersed with metal oxide-loaded carbon nanotubes”, J. Power sources. 196, 8858.  

13. R.B. Rakhi, W. Chen, D.K. Cha, and H.N. Alshareef (2011) “High Performance Supercapacitors Using Electrodes Incorporating Metal Oxide Nanoparticles Anchored onto Graphene Nanosheets”, J. Materials Chemistry, 21, 16197-16204.  

14. R.B. Rakhi, W. Chen, D.K. Cha, and H.N. Alshareef (2011) “Energy Storage Devices with Electrodes Incorporating Carbon Nanocoils & Metal Oxide Nanoparticles”, J. Phys. Chem. C 115 (29), 14392.  

15. R.B. Rakhi, K. Sethupathi and S. Ramaprabhu (2011) Field emission properties of   metal encapsulated and metal-oxide dispersed multi walled nanotube nanocomposites. Journal of Nano Energy and Power Research, 1, 57-64. 

16. S. S. Jyothirmayee Aravind, T. T. Baby, T. Arockiadoss, R.B. Rakhi and S. Ramaprabhu; (2011) A cholesterol biosensor based on gold nanoparticles decorated functionalized graphene nanoplatelets. Thin Solid Films, 519 (16), 5667-5672. 

17. Tessy Theres Baby, R.B. Rakhi, N. Ravi and S. Ramaprabhu (2012) Cerium oxide dispersed multi walled carbon nanotubes as cathode material for flexible field emitters. Journal of Nanoscience and Nanotechnology 12, 6718-6723  

18. R.B. Rakhi, W. Chen, D.K. Cha, and H.N. Alshareef (2012) “Substrate Dependent Self-Organization of Mesoporous Cobalt Oxide Nanowires with Remarkable Pseudocapacitance”, Nanoletters;  12(5), 2559-2567.

19. R.B. Rakhi, W. Chen, D.K. Cha, and H.N. Alshareef (2012) “Nanostructured Ternary Electrodes for Energy Storage Applications”, Advanced Energy Materials, 2, 381–389. 

20. R.B. Rakhi, W. Chen and H.N. Alshareef (2012) “Conducting polymer/carbon nanocoil composite electrodes for efficient supercapacitors”, J. Materials Chemistry, 22, 5177-5183. 

21. Aziz Fihri, Raed Rahal, R.B. Rakhi, Rachid Sougrat, Dongkyu Cha, Mohamed Nejib Hedhili, Mohamed Bouhrara, H. N. Alshareef, and Vivek Polshettiwar (2012) "Desert Nano-Roses of Nickel Oxides: Microwave-Assisted Green Synthesis, Electron Tomography Study and Their Application for CO Oxidation and Energy Storage",Chem sus Chem. 5, 1241-1248. 

22. W. Chen, R.B. Rakhi, and H.N. Alshareef (2012) “High energy density super apacitors using carbon nanotube-coated macroporous electrodes”, J. Materials Chemistry, 22, 14394-14402.

23. W. Chen, R.B. Rakhi, and H.N. Alshareef (2013) Facile Synthesis of Polyaniline Nanotubes for High Energy Density Pseudocapacitors, J. Materials Chemistry A, 1 (10) , pp. 3315-3324.

24. Y. Bai, R.B. Rakhi, W. Chen, and H.N. Alshareef (2013) Effect of pH-Induced Chemical Modification of Hydrothermally Reduced Graphene Oxide on Supercapacitor Performance, Journal of power sources,233, 313-319.  

25. W. Chen, R.B. Rakhi, and H.N. Alshareef (2013) Capacitance enhancement of polyaniline coated curved-graphene supercapacitor in redox-active electrolyte, Nanoscale 5 (10), pp. 4134-4138. 

26. W. Chen, R.B. Rakhi, and H.N. Alshareef (2013). Morphology-Dependent Enhancement of the Pseudocapacitance of Template-Guided Tunable Polyaniline Nanostructures. The Journal of Physical Chemistry C, 117 (29), pp 15009–15019.  

27. R.B. Rakhi, W. Chen, D.K. Cha, and H.N. Alshareef (2013), Influence of calcination temperature on the morphology and energy storage properties of Cobalt oxide nanostructures directly grown over carbon cloth substrates. Materials for Renewable and Sustainable Energy 2:17; DOI 10.1007/s40243-013-0017-y

28. N.A. Alhebshi, R.B. Rakhi, and H.N. Alshareef (2013) Conformal Coating of Ni(OH)2 Nanoflakes on Carbon Fibers by Chemical Bath Deposition for Efficient Supercapacitor Electrodes. J. Materials Chemistry A, DOI:10.1039/c3ta12936  

29. W. Chen, R.B. Rakhi, Qingxiao Wang, M. N. Hedhili and H.N. Alshareef (2014) “Growth Mechanism and Supercapacitor Cycling Performance of MnO2 Nanostructures by Electron Tomography”, Advanced Functional Materials, DOI: 10.1002/adfm.201303508

30. R.B. Rakhi, W. Chen, D.K. Cha, and H.N. Alshareef (2014) Enhanced rate performance of mesoporous Co3O4 nanosheet supercapacitor electrodes by hydrous RuO2 nanoparticle decoration. ACS Applied Materials and Interfaces DOI: 10.1021/am405849n

31. W. Chen; Rakhi, R. B.; M. N.Hedhili and H.N. Alshareef (2014), Shape Controlled Porous Nanocarbons for High Performance Supercapacitors. J. Materials Chemistry A DOI: 10.1039/C3TA15245F

32. W. Chen, C. Xia, R.B. Rakhi, and H.N. Alshareef (2014), A General Approach toward Enhancement of Pseudocapacitive Performance of Conducting Polymers by Redox-Active Electrolytes. Journal of Power sources DOI: 10.1016/j.jpowsour.2014.05.131

33. R. B. Rakhi, D. H. Anjum, N.A. Alhebshi, C. Xia, W. Chen, and H.N. Alshareef (2014), Nanostructured cobalt sulfide-on-fiber with tunable morphology as electrodes for asymmetric hybrid supercapacitors. Journal of Materials Chemistry A, 2, 16190

34. Sheikh, A. Bera, A. Mohammed, R. B. Rakhi, S.D. Gobbo, H.N. Alshareef, and T.Wu (2015), Atmospheric Effects on the Photovoltaic Performance of Hybrid Perovskite Solar Cells Solar Energy Materials and Solar Cells, Solar Energy Materials and Solar Cells, 137, 6-14.

35. R.B. Rakhi, Bilal Ahmed, M. N.Hedhili, D. H. Anjum, and H.N. Alshareef (2015) Effect of post-etch annealing gas composition on the structural and electrochemical properties of Ti2CTx MXene electrodes for supercapacitor applications, Chemistry of Materials, DOI: 10.1021/acs.chemmater.5b01623.

36. R.B. Rakhi, Bilal Ahmed, D. H. Anjum, and H.N. Alshareef (2016) Direct Chemical Synthesis of MnO2 Nanowhiskers on Transition-Metal Carbide Surfaces for Supercapacitor Applications, ACS Applied Materials and Interfaces 8 (29), 18806-18814.

37. R.B. Rakhi, D. H. Nagaraju, P. Beaujuge, H. N. Alshareef (2016) Supercapacitors based on two dimensional VO2 nanosheet electrodes in organic gel electrolyte, Electrochimica Acta, 220, 601-608.

38. R.B. Rakhi, P. Nayak, C. Xia, and H.N. Alshareef (2016) Novel amperometric glucose biosensor based on MXene nanocomposite, Scientific Reports 6, 36422.

39. R.B. Rakhi*, and M.L. Lekshmi (2017) Reduced graphene oxide based ternary nanocomposite cathodes for high-performance aqueous asymmetric supercapacitors, Electrochimica Acta 231, 539-548.

40. Johnpaul K. Pious, M. L. Lekshmi,Chinnadurai Muthu, R. B. Rakhi* and Vijayakumar C. Nair (2017) Zero-dimensional methylammonium bismuth iodide based lead-free perovskite capacitor, ACS Omega (In Press)

41. PM Anjana, MR Bindhu, M Umadevi, R.B. Rakhi* (2018) Antimicrobial, electrochemical and photo catalytic activities of Zn doped Fe3O4 nanoparticles, Journal of Materials Science: Materials in Electronics, 1-11.

42. P.K. Meenu, M.L. Lekshmi, P.M. Anjana, R.B. Rakhi* (2018) A High‐Performance Flexible Supercapacitor Anode Based On Polyaniline/Fe3O4 Composite@Carbon Cloth, Chemistry Select 3 (11), 3234-3240.

43. J Kavil, PM Anjana, P Periyat, RB Rakhi* (2018) Titania nanotubes dispersed graphitic carbon nitride nanosheets as efficient electrode materials for supercapacitors, Journal of Materials Science: Materials in Electronics, 1-11

44. J Kavil, PM Anjana, P Periyat, RB Rakhi* (2018) One-pot synthesis of g-C3N4/MnO2, g-C3N4/SnO2 hybrid nanocomposites for Supercapacitor applications, Sustainable Energy & Fuels,2, 2244 -2251.  DOI: 10.1039/c8se00279g

45. S. Sharath Shankar, Rayammarakkar M. Shereema, RB Rakhi* (2018) Electrochemical determination of Adrenaline using MXene/Graphite composite paste electrodes, ACS Applied Materials & Interfaces 10 (50), pp 43343–43351

46. Manuraj Mohan, K.N. narayanan Unni, RB Rakhi* (2018) 2D Organic-Inorganic Hybrid Composite Material as a High-Performance Supercapacitor Electrode, Vacuum (DOI: 10.1016/j.vacuum.2018.10.051).

47. PM Anjana, MR Bindhu, M Umadevi, R.B. Rakhi* (2019) Antibacterial and electrochemical activities of silver, gold, and palladium nanoparticles dispersed amorphous carbon composites, Applied Surface Science 479, 96-1041.

48. PM Anjana, MR Bindhu, R.B. Rakhi* (2019) Green synthesized gold nanoparticle dispersed porous carbon composites for electrochemical energy storage, Materials Science for Energy Technologies. 479, 96-104.

49. S. Sharath Shankar, Rayammarakkar M. Shereema, Vishnu Ramachandran, T. V. Sruthi, V. B. Sameer Kumar, and RB Rakhi* (2019) Electrochemical determination of Adrenaline using MXene/Graphite composite paste electrodes, ACS Omega ACS Omega, 4 (4), 7903–7910.

50. Jithesh Kavil, P.M.Anjana, C.P. Roshni, Pradeepan Periyat, K. Govind Raj and R.B. Rakhi* (2019) Multifunctional nanohybrid material from discarded razor blades as cost-effective supercapacitor electrodes and oil-spill cleaners , Applied surface science, 487, 109-115.

51. J. Kavil, P.M. Anjana, D. Joshy, A. Babu, G. Raj, P Periyat, R.B. Rakhi* (2019) gC3N4/CuO and gC3N4//Co3O4 nanohybrid structures as efficient electrode materials in symmetric supercapacitors, RSC Advances 9 (66), 38430-38437.

52. Manuraj Mohan, K.V. Kavya Nair, K.N. Narayanan Unni, and R.B. Rakhi, (2020) High performance supercapacitors based on MoS2 nanostructures with near commercial mass loading, Journal of alloys and Compounds, 819, 152963 

53. I Mukkatt, PM Anjana, A Nirmala, RB Rakhi, S Shankar, A Ajayaghosh* (2020) Metal ion-induced capacitance modulation in near-isostructural complexes-derived electrochromic coordination polymers, Materials Today Chemistry 16, 100260. (IF:3.68)

54. M. Manuraj, Jomiya Chacko, K.N.Narayanan Unni, R.B. Rakhi* (2020) Heterostructured MoS2-RuO2 nanocomposite: A promising electrode material for supercapacitors, Journal of Alloys and Compounds, 155420. (IF:4.175)

55. KB Babitha, PS Soorya, AM Peer, RB Rakhi*, A Solaiappan*(2020) Development of ZnO@ rGO Nanocomposites for the Enzyme Free Electrochemical Detection of Urea and Glucose, Materials Advances. DOI: 10.1039/D0MA00445F

56. M. Manuraj, S Jyothilakshmi, K.N.Narayanan Unni, R.B. Rakhi* (2020) MoSe2 nanoflowers as efficient electrode materials for supercapacitors, Journal of Materials Science: Materials in Electronics 31 (22), 20571-20577.

57.  R Rupa Ranjani, PM Anjana, R.B. Rakhi* (2021) Solvothermal synthesis of CuFeS2 nanoflakes as a promising electrode material for supercapacitors, Journal of Energy Storage,33, 102063,

58. PM Anjana, SR Sarath Kumar, R.B. Rakhi* (2021) Direct growth of Mn(OH)2/Co(OH)2 nanocomposite on carbon cloth for flexible supercapacitor electrodes, Journal of Energy Storage 33, 102151.

59.  PM Anjana, R Rupa Ranjani, R.B. Rakhi* (2021) Cu-Fe based Oxides and Selenides as Advanced Electrode Materials for High Performance Symmetric Supercapacitors , Materials Letters,129827.

60. PM Anjana, SR Sarath Kumar, R.B. Rakhi* (2021) MnCo2O4 nanoneedles self-organized microstructures for supercapacitors , Materials Today Communications, 102720.

61. V.S. Haritha, A. Vijayan, S. R. Sarath Kumar, R.B. Rakhi* (2021) Voltammetric determination of hydrogen peroxide using MoS2 modified glassy carbon electrodes , Materials Letters,  301, 130258

62. S Das, M Manuraj, R.B. Rakhi*, and A.Ajayaghosh* (2022) High-frequency electrochemical double layer capacitor based on carbon nanotubes ink coated eggshell membrane electrodes, Journal Energy Storage, 45,103799. 

63. Visakh V. Mohan, M. Manuraj,  PM Anjana, R.B. Rakhi* (2022) WS2 nanoflowers as efficient electrode materials for supercapacitors , Energy Technology, https://doi.org/10.1002/ente.202100976 .

64. Visakh V. Mohan,  PM Anjana, R.B. Rakhi* (2022) WS2 nanoflowers as efficient electrode materials for supercapacitors , Materials Today Proceedings https://doi.org/10.1016/j.matpr.2022.04.046.

65. V.S. Haritha, S. R. Sarath Kumar, R.B. Rakhi* (2022) Amperometric cholesterol biosensor based on cholesterol oxidase and Pt-Au/MWNTs modified glassy carbon electrode  , Materials Today: Proceedings 50, 34-39 

66. R Rohith, M Manuraj, RI Jafri, R.B. Rakhi* (2022) Co-MoS2 nanoflower coated carbon fabric as a flexible electrode for supercapacitor , Materials Today: Proceedings 50, 1-6

67. T.S. Bhat, P.S. Patil, and R.B. Rakhi* (2022) Recent trends in electrolytes for supercapacitors, Journal Energy Storage, 50, 104222. 

68. V.S. Haritha, M. Manuraj, T.V. Sruthi, V.B.S. Kumar,S. R. Sarath Kumar, S. Sharath Shankar, R.B. Rakhi* (2022) 3D‐Architectured MoS2‐Microflower‐Modified Electrodes toward Electrochemical Determination of Imidacloprid , ChemistrySelect,  7 (10), e202103362 

69. PM Anjana, SRS Kumar, RB Rakhi (2022) Manganese cobalt oxide nanoflakes for electrochemical energy storage, Journal of Materials Science: Materials in Electronics, 33, 8484–8492

70.  I Mukkatt, PM Anjana, A Nirmala, Dipak Patra, Priyanka A. Sukumaran, Renjith S. Pillai, R B Rakhi, S Shankar*, A Ajayaghosh* (2022) Tunable Capacitive Behavior in Metallopolymer-based Electrochromic Thin Film Supercapacitors, ACS Applied Materials & Interfaces14, 28, 31900-31910.

71. Visakh V. Mohan, PM Anjana, R.B. Rakhi* (2022) A study on the effect of phase conversion of tungsten nanostructures on their electrochemical energy storage performance, Materials Advances, 3, 5900-5910 

72. M Manuraj, VV Mohan, SA Aravindh, SRS Kumar, KNN Unni, RB Rakhi* (2022) Can mixed anion transition metal dichalcogenide electrodes enhance the performance of electrochemical energy storage devices? The case of MoS2xSe2 (1-x), Chemical Engineering Journal, 443, 136451

73. R Shilpa, KS Sibi, RK Pai, SRS Kumar, RB Rakhi* (2022) Electrocatalytic water splitting for efficient hydrogen evolution using molybdenum disulfide nanomaterials, Materials Science and Engineering: B 285, 115930

74. VS Haritha, SRS Kumar, R.B. Rakhi* (2022) Non-enzymatic electrocatalytic detection of hydrogen peroxide using Tungsten disulphide nanosheets modified electrodes, Materials Science and Engineering: B 285, 115932

75. CP Roshni, K Jithesh, M Manuraj, KG Raj, RB Rakhi* (2022) β-Ni (OH) 2 supported over g-C3N4: A novel catalyst for para-nitrophenol reduction and supercapacitor electrode, Results in Chemistry, 100498

76. P.M. Anjana, C Vijayakumar, SRS Kumar, MR Bindhu, SRS Kumar, R.B. Rakhi* (2023) Role of reduced graphene oxide-co-double-doped Fe3O4 nanocomposites for photocatalytic and supercapacitor applications , Materials Science and Engineering: B 290, 116313

77. PM Anjana, SRS Kumar, R.B. Rakhi* (2023) MnCo2S4 nanoflowers directly grown over nickel foam as cathode for high-performance asymmetric hybrid supercapacitors, Journal of Energy Storage 61, 106672

78. VS Haritha, SR Sarath Kumar, RB Rakhi (2023) WS2-Nanosheet-Modified Electrodes as an Efficient Electrochemical Sensing Platform for the Nonenzymatic Detection of the Insecticide Imidacloprid, ACS Omega, DOI: https://doi.org/10.1021/acsomega.2c08077, 8, 9, 8695–8702. (IF:4.13)

79. PM Anjana, SRS Kumar, R.B. Rakhi* (2023) Direct growth of MnCoSe2 nanoneedles on 3D nickel foam for supercapacitor application , Surfaces and Interfaces 61, 103358 

80. SM Varghese, VV Mohan, S Suresh, EB Gowd*, RB Rakhi* (2022) Synergistically modified Ti3C2Tx MXene conducting polymer nanocomposites as efficient electrode materials for supercapacitors, Journal of Alloys and Compounds, 443, 172923 (IF= 6.6)

81. Visakh V. Mohan, M. Manuraj, R.B. Rakhi* (2023) High performance supercapacitors based on WS2 nanoflower electrodes with commercial-level mass-loading, Surfaces and Interfaces, 42, 103496 (IF:6.2)

82. SM Varghese, SR Sarath Kumar*, RB Rakhi* (2024) Carbide-derived carbon by room temperature chemical etching of MAX phase for supercapacitor

     application, Applied Physics Letters, 124 (2), 023905 (IF= 4)

83. Aswathy S Nair; Sreejakumari S S; Venkatesan J; Rakhi R B; R. Radhakrishnan Sumathi, and Jayasankar K. (2024) A Novel Top-Down Approach for High Yield Production of Graphene from Natural Graphite and its Supercapacitor Applications, Diamond & Related Materials, 144, 111025 (IF:4.1)

84. Visakh V. Mohan, K. P.Revathy, C. B. Adithyan , R.B. Rakhi* (2024) Recent developments of tungsten disulfide-based nanomaterials for supercapacitor applications, Journal of Energy storage,  88, 111505 

85. Adarsh Sivan Pillai , Sophy Mariam Varghese , R.B. Rakhi , Surendran Kuzhichalil Peethambharan (2024) Synergistic effect of solvent addition and temperature treatment on conductivity enhancement of MWCNTs: PEDOT:PSS composite ink for electrodes in all printed solid-state micro-supercapacitors, Chemical Engineering Journal, 153495 

86. CP Roshni, K Jithesh, PM Anjana, RB Rakhi  (2024) Synthesis and characterization of alpha and beta cobalt hydroxide nanostructures for photocatalytic dye degradation and supercapacitor applications , Next Materials 4, 100199 

87. Visakh V. Mohan, , R.B. Rakhi* (2024) WS2/Conducting polymer nanocomposite-based flexible and binder-free electrodes for high-performance supercapacitors , Electrochimica Acta, 144657 

88. VS Haritha, SRS Kumar, R.B. Rakhi* (2024) Electrochemical Determination of Carbofuran Residues using WS2 Modified Electrodes, ChemistrySelect 9 (33), e202402500.

89. V Samyyappan, PM Anjana, RB Rakhi, S Shankar, SP Renjith, A. Ajayaghosh, (2024) Self-Exfoliating Benzotristriazine Macrocyclic Network: A New 2D Material for High-Performance Electrochemical Energy Storage, Small, 2405701.

90. VS Haritha, SRS Kumar, R.B. Rakhi* (2025) Highly sensitive detection of the hazardous insecticide carbofuran using tungsten disulfide nanosheets decorated with gold nanoparticles, Surfaces and Interfaces 56, 105600. 

91. SM Aparna, RB Rakhi (2025) A non-enzymatic electrochemical sensor based on zinc oxide/reduced graphene oxide (ZnO/rGO) nanocomposite for effective detection of urea, Materials Science and Engineering: B 312, 117862 

92. R Shilpa, SA Aravindh, SRS Kumar, DD Sarma, RB Rakhi (2025) Designing Mo-based transition metal dichalcogenides for sustainable hydrogen production: Anionic substitution and DFT insight, Applied Surface Science 681, 161614. 

93. R Shilpa, AC Anand, K.S.Sibi, SRS Kumar, RB Rakhi* (2025) MnO2/MoS2 heterostructured self-standing bifunctional electrodes for efficient alkaline simulated seawater electrolysis, International Journal of Hydrogen Energy 117, 73-85

94. Visakh V. Mohan, SRS Kumar, R.B. Rakhi* (2025) An investigation on the effect of aqueous electrolytes on the electrochemical performance of WS2 nanosheets, Journal of Materials Science: Materials in Electronics 36 (16), 1-14

95. M. Pulikkottil, RB Rakhi, A. Seema (2025) Impact of the Stable Solid–Electrolyte Interphase in Sustainable and High‐Performance Lithium‐Ion Battery Anodes, batteries & Supercaps; DOI: https://doi.org/10.1002/batt.202500228

96. AC Anand, R Shilpa, RB Rakhi* (2025) Thiospinel NiCo2S4 Nanoflakes Grown on Ni Foam as Robust Electrocatalysts for Hydrogen Evolution in Alkaline Simulated Seawater, ACS Applied Nanomaterials, DOI: https://doi.org/10.1021/acsanm.5c01986

97.  SM Varghese, RS Srihari, MO Anagha, RB Rakhi (2025)  Transition Metal Oxide–Decorated Titanium Carbide MXene Electrodes for High-Energy Supercapacitors with an Expanded Potential Window. Batteries & Supercaps, DOI: https://doi.org/10.1002/batt.202500304

98.  Visakh V. Mohan, RB Rakhi (2025) WS2/Metal Oxide Nanohybrid Electrodes for High‐Performance Supercapacitors. Advanced Materials Technologies, DOI: 10.1002/admt.202500762

99.  AB Nandana, AC Anand, SM George, RB Rakhi (2026) Electrochemical Investigation of V2O5 as a High-Performance Material for Supercapacitors and Electrocatalysis, ACS Applied Electronic Materials,8(1), 634-644.

100.  RP Shilpa, SM Varghese, RB Rakhi (2025) MoS2/CNT Anchored Ti3C2Tx—MXene as a High‐Performance Ternary Material for Enhanced Electrocatalytic Hydrogen Generation, Advanced Sustainable Systems, e01066

101. S Prakash, R Rajamany, SM Varghese, RB Rakhi, YA Ismail (2026) Polyaniline-Functionalized Sulfur and Nitrogen Co-Doped rGO: Toward Sustainable, Ultra-Stable Supercapacitors with Superior Energy Density and High Retention Rate, Materials Research Bulletin, 113966

102.  S Prakash, R Rajamany, PM Anjana, RB Rakhi, YA Ismail (2026) Covalently bonded polyaniline-nitrogen doped rGO macromolecules for superior supercapacitors with enhanced energy density and long-term cyclic stability Journal of Power Sources 665, 239079

103. RS Srihari, JS Jyothis, SK Peethambharan, RB Rakhi (2026) High-energy density hybrid supercapacitors with nickel disulfide cathodes and sulfur-doped reduced graphene oxide anodes, Chemical Engineering Journal, 174847

104. AC Anand, R Shilpa, RB Rakhi (2026) NiCo2S4/S doped rGO nanocomposites for efficient electrocatalytic water splitting under saline conditions, International Journal of Hydrogen Energy 228, 154694

105. Arya Nair JS, Anjana PM, E Dais, D V, RB Rakhi, Sandhya KY (2026) Synergistic Effect in an Edge‐Functionalized Water‐Processable Graphene with MoS2 Hollow Nanoflowers for a High‐Performance Supercapacitor Electrodes Batteries & Supercaps 9 (5), e70297

106. SM Aparna, RB Rakhi (2026) Ternary rGO/NiO/PANI Nanocomposites as an Electrochemical Sensor for the Detection of Malathion ACS Applied Nano Materials

107. S Mariam Varghese, RB Rakhi (2026) Investigating the Electrochemical Properties of Ti3C2Tx MXene-Carbon-Based Composites as Efficient Anode Materials for High-Performance Supercapacitors, ACS Applied Electronic Materials 8 (8), 3439-3452

108. S Vijayakumar, SM Varghese, S Ghosh, NP Lobo, RB Rakhi*, A Ajayaghosh* (2026) Mellitic Trianhydride Derived Crystalline and Amorphous Polyimide Networks Exhibit Structure Dependent Electrochemical Properties, ChemistryEurope  4 (1), e202500373

Indian Patent

S. Ramaprabhu, R. B. Rakhi, A. Leela Mohana Reddy and K. Sethupathi, A Flexible carbon nanotube based field emitter. Indian Patent (N0:667/CHE/2007). 

Presentation in conferences

 National

1.      R.B. Rakhi, S.R. Sarath Kumar and S. Mohanan, Thermo-optic studies on certain medicines nearing their expiry dates, 15th Kerala Science congress National conference on Solid State Physics, Kanakakkunnu Palace, Thiruvananthapuram, India, January, 2003.

2.      S.R. Sarath Kumar, R.B. Rakhi and S. Mohanan, Thermo-optic studies on the effect of sunlight on certain medicines, 15th Kerala Science congress, Kanakakkunnu Palace, Thiruvananthapuram, India, January, 2003.

3.      R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, Synthesis and characterization of multi walled carbon nanotubes by thermal chemical vapour deposition using RE based AB2 alloy hydride catalyst, DAE National conference on Solid State Physics, BARC, Mumbai, India, December, 2005.

4.      R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, Field emission propertiesof Multi-walled carbon nanotubes. National Workshop on Nanostructured materials and applications, Stella Maris College, Chennai, India, January, 2007(II prize for oral presentation).

5.      R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, Preparation and characterization of nanocrystalline Au/multi walled carbon nanotube composites. DAE National conference on Solid State Physics, BARC, Mumbai, India, December, 2008.

6.      R.B. Rakhi, Nanocomposite Electrodes for high performance supercapacitors. National Seminar on Recent Advances in Physics organized by the Dept. of Physics, University College on 8-9 March 2017. (Invited talk).

7.      P.M. Anjana and R.B. Rakhi, Direct growth of polyaniline/Fe3O4 composite on flexible carbon cloth for supercapacitor application, Polymer Conference for Young Researchers (PYCR’18) held at   CSIR-NIIST on 17, November, 2018

8.      . Visakh V Mohan, Manuraj Mohan and R.B Rakhi “Commercial-level mass-loading 2D WS2 towards real-time energy storage applications” in the two-day National Seminar on Recent Trends in Energy and Environment (NSREE-2K22) organized by Post Graduate Department of Physics, SN College, Sivagiri, Varkala on 8-9 December 2022, in association with KSCSTE.

9.      Shilpa R, K S Sibi, S. R. Sarath Kumar, and R.B Rakhi “Enhanced Electrocatalytic Hydrogen Evolution Using MoS2 Nanostructures” in the two-day National Seminar on Recent Trends in Energy and Environment (NSREE-2K22) organized by Post Graduate Department of Physics, SN College, Sivagiri, Varkala on 8-9 December 2022, in association with KSCSTE.

10.  Sophy Mariam Varghese, and R.B Rakhi “Two-dimensional Titanium carbide MXene as an electrode material for supercapacitors” in the two-day National Seminar on Recent Trends in Energy and Environment (NSREE-2K22) organized by Post Graduate Department of Physics, SN College, Sivagiri, Varkala on 8-9 December 2022, in association with KSCSTE

11.  Sophy Mariam Varghese, and R.B Rakhi “Electrochemical performance investigation of Ti3C2Tx MXene based symmetric supercapacitor for energy storage application” in the National Conference on Recent Trends in Materials Science and Technology (NCMST 2022) organized by IIST Trivandrum during 28-30 December 2022.

12.  Haritha V S, S.R Sarath Kumar and R.B Rakhi  “Nonenzymatic Electrochemical Detection of Highly Toxic Pesticide Carbofuran with the Application of Tungsten Disulphide Nanosheets Modified Electrodes.” in the two-day National Seminar on Recent Trends in Energy and Environment (NSREE-2K22) organized by Post Graduate Department of Physics, SN College, Sivagiri, Varkala on 8-9 December 2022, in association with KSCSTE

13.  Haritha V S, S.R Sarath Kumar and R.B Rakhi  “Nonenzymatic Electrochemical Detection of Highly Toxic Pesticide Carbofuran with the Application of Tungsten Disulphide Nanosheets Modified Electrodes” National Conference on Recent Trends in Materials Science and Technology (NCMST-2022) Organized by Department of Chemistry IIST Trivandrum on December 28-30.

14.  P.M.Anjana, S.R. Sarath Kumar and R.B.Rakhi, “Fabrication and supercapacitor performance study of MnCo2S4 nanoflower on 3D conducting Nickel foam”,( SNREE 2022) organized by The Department of Physics, SN College, Varkala-695145, Kerala, India.

15.  Haritha V S, S.R Sarath Kumar and R.B Rakhi  “Electrochemical detection of imidacloprid using MoS2 nanowire cluster modified electrodes.” In the 34th Kerala Science Congress Feb 10-12, 2022 Thiruvananthapuram

16.  Sophy Mariam Varghese, S. R. Sarath Kumar*, and R.B Rakhi “Enhanced Supercapacitor Performance through Room-Temperature Synthesis of Carbide-Derived Carbon Electrodes” in the National Seminar on Electrochemistry- The Future of Energy Storage on 17th November 2023 organized by Post graduate and Research Department of chemistry Fatima Mata National College (Autonomous), Kollam. (Oral Presentation).

17.  R. Shilpa, K. S. Sibi, S. R. Sarath Kumar*, R.B. Rakhi* “Molybdenum disulfide nanomaterial for enhancing electrocatalytic hydrogen evolution” in the National Seminar on Electrochemistry- The Future of Energy Storage on 17th November 2023 organized by Postgraduate and Research Department of chemistry, Fatima Mata National College (Autonomous), Kollam. (Oral Presentation).

18.  Visakh V Mohan and R.B Rakhi “Meet a future technology with a supercapacitor” in 30th Swadeshi Science Congress (SSC 30) Jointly Organized by National Institute of Technology (NIT), Calicut in association with ICAR-Indian Institute of Spices Research (ICAR-IISR), Calicut & KSCSTE - Centre for Water Resources Development and Management, Calicut held in National Institute of Technology (NIT), Calicut (25-27 May 23)

19.  Shilpa R., R.B. Rakhi, “Heterostructured binder-free electrodes for full cell electrolysis in alkaline simulated seawater” in the National Conference on Advances in Organic and Materials Chemistry (AOMC 2025) organized by CSIR–NIIST, Thiruvananthapuram during 26–27 June 2025. (Oral Presentation)

20.  Shilpa R., R.B. Rakhi, “Self-standing bifunctional electrode materials for overall water splitting in alkaline simulated seawater” in the Workshop on Advanced Materials & Sustainable Energy Technologies (WAMSET 2025) organized by CSIR–NIIST during 29 July–02 August 2025. (Oral Presentation)

21.  Sophy Mariam Varghese, R.B. Rakhi, “MXene–MWCNTs: PEDOT:PSS ternary composite inks for screen-printing high-performance electrodes in flexible micro-supercapacitors” in the National Conference on Advances in Organic and Materials Chemistry (AOMC 2025) organized by CSIR–NIIST, Thiruvananthapuram during 26–27 June 2025. (Oral Presentation)

22.  Sophy Mariam Varghese, R.B. Rakhi, “MXene–MWCNTs: PEDOT:PSS ternary composite inks for screen-printing high-performance electrodes in flexible micro-supercapacitors” in the Workshop on Advanced Materials & Sustainable Energy Technologies (WAMSET 2025) held at the University of Kerala during 29 July–02 August 2025. (Oral Presentation)

23.  Sophy Mariam Varghese, R.B. Rakhi, “Titanium Carbide MXene–Multiwalled CNT nanocomposites for flexible screen-printed micro-supercapacitors” in the National Conclave on Sustainable Energy Technologies (NCSET 2025) organized by CSIR–NIIST during 15–16 September 2025. (Oral Presentation)

24.  Sophy Mariam Varghese, R.B. Rakhi, “Conducting Polymer Modified Titanium Carbide MXene Nanocomposites for High-Performance Supercapacitors” in the National Seminar on Functional Polymers for Material Applications (PolyMAT-2025) held at Government College, Attingal during 03–05 December 2025. (Oral Presentation)

25.  Aparna S.M., R.B. Rakhi, “A Ternary rGO/NiO/PANI Nanocomposite-Based Electrochemical Sensor for Ultrasensitive Detection of Organophosphate Insecticide Malathion” in the National Conclave on Sustainable Energy Technologies (NCSET 2025) organized by CSIR–NIIST during 15–16 September 2025. (Oral Presentation)

26.  Aparna S M, R.B Rakhi “A non- enzymatic ultrasensitive electrochemical sensor for effective urea detection based on zinc oxide/ Reduced graphene oxide(ZnO/rGO) nanocomposite” in the national conference on functional materials and applications(NCFMA- 2024) Organized by the department of physics, cochin university of science and technology on 18-19 of January. 

27.  Aparna S.M., R.B. Rakhi, “Screen-Printed Electrochemical Sensor Based on Au-N-GQD for the Simultaneous Detection of Biomolecules Uric Acid, Ascorbic Acid, and Dopamine” in the National Seminar on Functional Polymers for Material Applications (PolyMAT-2025) held at Government College, Attingal during 03–05 December 2025. (Oral Presentation)

28.  Sophy Mariam Varghese, R.B. Rakhi, “Tailoring Ti₃C₂Tₓ MXene–Reduced Graphene Oxide Anodes Toward Enhanced Asymmetric Supercapacitor Performance” in the International Conference on Advanced Materials, Green Energy and Sustainability (ICAMGES 2026) organized by the Department of Chemistry & Centre for Renewable Energy and Materials, University of Kerala, Thiruvananthapuram during 5–7 February 2026. (Oral Presentation)

29.  Srihari R.S., R.B. Rakhi, “High-Performance Nickel Disulfide Nanostructures for Next-Generation Battery-Type Hybrid Supercapacitor Electrodes” in the National Conclave on Sustainable Energy Technologies (NCSET 2025) organized by CSIR–NIIST during 15–16 September 2025. (Oral Presentation)

30.  Shilpa R., R.B. Rakhi, “Designing MoS₂/CNT-MXene electrocatalyst for enhanced electrocatalytic hydrogen generation” in the International Conference on Advanced Materials, Green Energy and Sustainability (ICAMGES 2026) organized by the Department of Chemistry & Centre for Renewable Energy and Materials, University of Kerala, Thiruvananthapuram during 5–7 February 2026. (Oral Presentation)

31.  Adithya C. Anand, R.B. Rakhi, “Exploring NiCo₂S₄/S-doped rGO Nanocomposites for Overall Water Splitting in Alkaline Electrolyte” in the National Conclave on Sustainable Energy Technologies (NCSET 2025) organized by CSIR–NIIST during 15–16 September 2025. (Oral Presentation)

32.  Shilpa R., R.B. Rakhi, “MoS₂/CNT-MXene electrocatalyst for electrocatalytic hydrogen generation” in the National Research Conference & Kerala Higher Education Expo 2026 held at Government College for Women, Thiruvananthapuram during 9–11 February 2026. (Oral Presentation)

33.  Sophy Mariam Varghese, R.B. Rakhi, “MXene based nanocomposites for supercapacitors” in the National Research Conference & Kerala Higher Education Expo 2026 held at Government College for Women, Thiruvananthapuram during 9–11 February 2026. (Oral Presentation)

  International

1.      R.B. Rakhi, M.M. Shaijumon, K. Sethupathi and S. Ramaprabhu, Hydrogen adsorption properties of carbon nanotubes synthesized by the pyrolysis of hydrocarbon over rare earth based AB2 alloy hydride catalyst, International Symposium of Research Scholars (ISRS-2006), IIT, Chennai, India, December, 2006. 

2.      R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, Synthesis and Hydrogen adsorption properties of carbon nanotubes, International Workshop on Hydrogen Energy, University of Rajastan, Jaipur, India, November, 2006.

3.      R.B. Rakhi, A. Leela mohana Reddy, M.M. Shaijumon, K. Sethupathi and S. Ramaprabhu, Field emission studies of Multi-walled carbon nanotubes synthesized by chemical vapour deposition using alloy hydride catalysts, International conference on Advanced Nano Materials (ANM-2007), IIT Mumbai, India, January, 2007  

4.      R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, Synthesis and field emission properties of polymer/metal/metal oxide dispersed carbon nanotubes International conference on Advanced Materials and Composites (ICAMC-2007), NIST, Trivandrum, India,October, 2007.

5.      S.S.Jyothirmayee Aravind, T. Arockiadoss, R.B. Rakhi, and S. Ramaprabhu, Biological sensor based on Au/MWNT for Dopamine detection., International conference on Functional Materials (FM-2008), IIT Madras, Chennai, India, November, 2008. 

6.      S.S. Jyothirmayee Aravind, Tessy Theres Baby, R.B. Rakhi, T. Arockiadoss and S. Ramaprabhu, Fabrication of Amperometric Dopamine biosensor using Au/Graphene, International Symposium of Research Scholars (ISRS-2008), IIT Madras, Chennai, India, December, 2008.   

7.      R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, Electron field emission from conducting polymer coated metal encapsulated and metal oxide loaded multi walled nanotube composites, International Symposium of Research Scholars (ISRS-2008), IIT, Chennai, India, December, 2008.

8.      R.B. Rakhi, K. Sethupathi and S. Ramaprabhu, Development of an amperometric cholesterol biosensor based on nanocrystalline metal cluster coated multi walled carbon nanotubes and organically modified sol-gel/chitosan hybrid composite film, International Conference on Functional Materials (FM-2008), IIT, Chennai, India, November, 2008.

9.      Tessy Theres Baby, T. Arockiadoss, R.B. Rakhi,and S. Ramaprabhu, Magnetic bio- nanoparticles modified Multi walled carbon nanotubes based Glucose biosensor, International conference on Functional Materials (FM-2008), IIT Madras, Chennai, India, November, 2008. 

10.  Tessy Theres Baby, S.S. Jyothirmayee Aravind, R.B. Rakhi, T. Arockiadoss and S. Ramaprabhu, Fabrication of Amperometric glucose biosensor using two  dimensional Graphene, International Symposium of Research Scholars (ISRS-2008), IIT Madras, Chennai, India, December, 2008.   

11.  R.B. Rakhi, X. Lim, K. Sethupathi, S. Ramaprabhu and C.H Sow, Micro-topiary: Laser pruning of CNT arrays, Second International Conference on Frontiers in Nanoscience and Technology (Cochin nano - 2009), CUSAT, Cochin, India, January, 2009.

12.  Tessy Theres Baby, R.B. Rakhi, N. Ravi and S. Ramaprabhu, Cerium Oxide Dispersed Multiwaleed Carbon Nanotubes as Cathode Material for Flexible Field Emitters, 3rd International Conference on Advanced Nano Materials (ANM-2010) held in Agadir, Morocco on 12-15 September 2010.

13.  R.B. Rakhi, and H.N.  Alshareef, Supercapacitors based on graphene/metal oxide nanocomposite electrodes, Winter Enrichment Program (WEP 2011), held at King Abdullah University of Science and technology (KAUST), Saudi Arabia on 15-31 January, 2011.

14.  R.B. Rakhi, W. Chen and H.N.  Alshareef, Synthesis of MnO2/Carbon Nanotube Dispersed Graphene as Efficient Electrode Materials for Supercapacitors, 2012 MRS Spring Meeting & Exhibit, held at Moscone West Convention Center/Marriott Marquis - San Francisco, California on 9 - 13April, 2012.

15.  W. Chen, R.B. Rakhi and H.N.  Alshareef, Carbon-coated MnO2 Nanorods as Supercapacitor Electrodes with Enhanced Performance, 2012 MRS Spring Meeting & Exhibit, held at Moscone West Convention Center/Marriott Marquis - San Francisco, California on 9 - 13April, 2012.

16.  W. Chen, R.B. Rakhi and H.N.  Alshareef, High-performance Nanostructured Supercapacitors on a Sponge, 2012 MRS Spring Meeting & Exhibit, held at Moscone West Convention Center/Marriott Marquis - San Francisco, California on 9 - 13April, 2012.

17.  R.B. Rakhi, W. Chen and H.N.  Alshareef, Conducting Polymer/Carbon Nanocoils Composite Electrodes for Efficient Supercapacitors, 2012 MRS Spring Meeting & Exhibit, held at Moscone West Convention Center/Marriott Marquis - San Francisco, California on 9 - 13April, 2012.

18.  R.B. Rakhi and H.N. Alshareef, Enegry Storage on Flexible Carbon Fabric, Global Collaborative Research (GCR) Symposium, KAUST, Saudi Arabia, 26-27 March 2014. (Best poster award)

19.  Nuha A. Alhebshi, R. B. Rakhi and H. N. Alshareef, Conformal Coating of Ni(OH)2 Nanoflakes on Carbon Fibers by Chemical Bath Deposition for Efficient Supercapacitor Electrode, Supercapacitors Europe 2014 Conference, Berlin, Germany 1-2 April 2014.

20.  R.B. Rakhi, Nanostructured Electrode materials for aqueous supercapacitors, Advanced functional Materials and devices (IWAFMD-2017) held at MS University Thirunelveli, from 8-12, January 2017.

21.  P.M. Anjana and R.B. Rakhi, Direct growth of Manganese Cobalt - Double hydroxide on flexible carbon cloth for supercapacitor application, International Conference on Nanomaterials: Synthesis, Characterization and Applications (ICN 2018) held at   M.G university, Kottayam From 11-13, May, 2018

22.  P.M. Anjana and R.B. Rakhi, antibacterial and electrochemical activities of silver, gold, and palladium nanoparticles dispersed amorphous carbon composites, International Conference on Nanomaterials: Synthesis, Characterization and Applications (ICN 2018) held at   SRM University Chennai From 28-30, January, 2019

23.  Manuraj Mohan, K.N. narayanan Unni, R.B. Rakhi, Nanostructured ternary chalcogenide electrode materials for electrochemical energy storage accepted for presentation in 5th International Conference on Nanoscience and Nanotechnology (ICONN-2019) to be held at SRM University from 28th to 31st January 2019.

24.  Manuraj Mohan, K.N. narayanan Unni, R.B. Rakhi (2018) 2D Organic-Inorganic Hybrid Composite Material as a High-Performance Supercapacitor Electrode, presented at International Symposium on Functional Materials(ISFM-2018) held at Chandigarh, on April 13-15, 2018

25.  Manuraj Mohan, K.N. narayanan Unni, R.B. Rakhi (2018) Conducting polymer/ carbon nanotube composites as efficient supercapacitor electrodes, presented at the Polymer conference for Young Researchers (PCYR-2018) held at CSIR-NIIST on November 17, 2018

26.  Manuraj Mohan, K.N. narayanan Unni, R.B. Rakhi (2019) Commercial level mass loading of MoS2 nanotubes grown on nickel foam substractes for supercapacitor applications at International Conference on Frontiers in Materials from Basic Science to Real –time Applications(F2DM) held at JAIN University Bangalore on March-13 to 16 2019.

27.  Manuraj Mohan, K.N. narayananUnni, RB Rakhi*, High performance Supercapacitors based on MoS2 nanostructures with near commercial mass loading, poster presentation at ICAFM- 2019 held at CSIR-NIIST, Thiruvananthapuram on 9-10 December 2019.

28.  P.M. Anjana and R.B. Rakhi, 2D flexible graphite oxide sheets for supercapacitor application, International Virtual Conference on Advanced Nanomaterials and Applications” - VCAN 2020,  held at Vellore Institute of Technology, Chennai From 17-19, June, 2020.

29.  R. Rohith, M.Manuraj and R.B. Rakhi, MoS2 nanoflower coated carbon fabric as a flexible electrode for supercapacitors, International Virtual Conference on Advanced Nanomaterials and Applications” - VCAN 2020,  held at Vellore Institute of Technology, Chennai From 17-19, June, 2020.

30.  Visakh V Mohan, M Manuraj and R.B Rakhi , High performance supercapacitor based on 2D WS2 Nanoflower” at 1st International conference on Thin films and Nanotechnology-Knowledge, leadership, and commercialization (ICTN-KLC 2021) held virtually from 24th to  26th August ,2021 under the auspices of the Thin film Laboratory, Department of physics , IIT Delhi, India

31.  Visakh V Mohan, M Manuraj and R.B Rakhi , “FLEXIBLE SYMMETRIC HIGH PERFORMANCE SUPERCAPACITOR BASED ON WS2 2D MATERIAL” at International e-Conference on Advanced Materials (ICOAM 2021) organized by Department of Physics, JP College of Arts & Science, Agarakattu, Tenkasi, Tamil Nadu, India held on 24th & 25th Septemper 2021 .

32.  Visakh V Mohan, M Manuraj and R.B Rakhi, “One pot synthesis of WS2 for high performance supercapacitor applications” in the Indo-South Korea International e-Conference on Nanoscience and Nanotechnology for Energy, Environment and Biomedical Applications (iNEEBA2021), organized by Vinayaka Missions Kirupananda Variyar Arts and Science College, India in association with Gyeongsang National University, Republic of Korea during 07-08 October, 2021.

33.  Visakh V Mohan, P. M Anjana and R.B Rakhi, “ONE POT SYNTHESIS OF TUNGSTEN OXIDE NANOMATERIAL AND APPLICATION IN THE FIELD OF FLEXIBLE SYMMETRIC SUPERCAPACITOR ENERGY STORAGE DEVICE” at Second International Conference on Engineering Materials, Metallurgy and Manufacturing (ICEMMM 2021) organized by SSN College of engineering , Kalavakkam, India.

34.  Shilpa R, K S Sibi, and R.B Rakhi “Electrocatalytic water splitting for efficient Hydrogen Evolution using Molybdenum disulfide nanomaterial” in the International Conference on Advanced Materials and Mechanical Characterization (ICAMMC 2021) organized by the Department of Physics and Nanotechnology and Department of Mechanical Engineering, SRM Institute of Science And Technology during 2-4 December 2021

35.  Haritha V S, S.R Sarath Kumar and R.B Rakhi “Voltammetric determination of Hydrogen Peroxide using MoS2 modified glassy carbon electrodes.” “6th International Conference on Nanoscience and Nanotechnology (ICONN 2021) organized by the Department of Physics and Nanotechnology, SRM IST, Kattankulathur, India February 01 – 03, 2021.

36.  Haritha V S, S.R Sarath Kumar and R.B Rakhi “Electrochemical detection of imidacloprid using transition metal dichalcogenide modified electrodes.”in International Conference on Sustainable Materials and Technologies for Bio and Energy Applications during 19-21 May 2021 at Department of Electronics and Communication Engineering and SSN Research Centre, Kalavakkam.

37.  Haritha V S, S.R Sarath Kumar and R.B Rakhi “Non-Enzymatic electrocatalytic detection of Hydrogen peroxide using Tungsten disulphide nanosheets modified electrodes.” In International Conference on Advanced Materials and Mechanical Characterization organized by Department of Physics and Nanotechnology and Department of Mechanical Engineering, SRM Institute of Science and technology on 2-4 December 2021.

38.  P.M.Anjana, S.R. Sarath Kumar and R.B.Rakhi, “MnCo2O4 nanowires self-organized microflowers as electrode materials for supercapacitors”, International Conference on Nanoscience and Nanotechnology (ICONN 2021) organized by Department of Physics and Nanotechnology, SRM IST, India during February 01 - 03, 2021.

39.  P.M.Anjana, and R.B.Rakhi,” Direct growth of Mn(OH)2/Co(OH)2 nanocomposite on carbon cloth as flexible supercapacitor electrodes”, International Conference on Multifunctional Electronic Materials and Processing (MEMP-2021) organized by Centre for Materials for Electronics Technology (C-MET), Pune during March 8-10, 2021

40.  P.M.Anjana, and R.B.Rakhi, “Two-dimensional flexible graphite oxide sheets for electrochemical energy storage application”, Sustainable Materials and Technologies for Bio and Energy Applications (SMTBEA-2021) organized by the Department of Electronics & Communication Engineering, SSN College of Engineering, Kalavakkam, Chennai, 603110, India during May19-21, 2021

41.  P.M.Anjana, S.R. Sarath Kumar and R.B.Rakhi, “MnCo2O4 nanoneedles self-organized microstructures for supercapacitors”, International e-Conference on Advanced Materials (ICOAM 2021) organized by Department of Physics, JP College of Arts & Science, Agarakattu, Tenkasi-627851, Tamil Nadu, India held on 24th & 25th Septemper 2021

42.  Visakh V Mohan and R.B Rakhi  “Synergistically modified 2D Inorganic–Organic hybrid composite electrodes enable high specific capacitance in symmetric supercapacitors” in the Indo-South Korea – Thailand 2nd International e-Conference on “Nanoscience and Nanotechnology for Energy, Environment and Biomedical Applications” (iNEEBA2022), organized by Vinayaka Missions Kirupananda Variyar Arts and Science College, India in association with Gyeongsang National University, Republic of Korea and Chulalongkorn University, Thailand during on 24 - 25 November, 2022

43.  Visakh V Mohan, and R.B Rakhi  “Can oxygen vacancies enhance the electrochemical performance of tungsten nano structures in symmetric supercapacitors” in the International Symposium on Semiconductor Materials and Devices-2022 (ISSMD-22), held at School of Electronics Engineering, KIIT, Bhubaneswar, Odisha, India during 16-18 December 2022.

44.  Visakh V Mohan and R.B Rakhi  “Outstanding performance of commercial-level mass-loading 2D WS2 for aqueous energy storage devices” International e-Conference on Chemical and Environmental Sciences (ICCAES-22) organised by Institute of Engineering & Management, Kolkata 16-18 December, 2022

45.  Shilpa R, K S Sibi, and R.B Rakhi “Controlled Growth of Molybdenum disulphide Nanomaterials for Enhancing Hydrogen evolution Reaction” in the International Conference on Materials – Properties, Measurements and Applications (ICMPMA 2022) organized by Research & Post-graduate Department of Physics, Fathima Mata National College (Autonomous), Kerala during 9-13 May 2022.

46.  Shilpa R, and R.B Rakhi “The effect of substrate depended-growth of Molybdenum disulfide on electrocatalytic hydrogen evolution” in the International Conference on Chemistry and Applications of Soft Materials (CASM 2022) organized by CSIR-National Institute of Interdisciplinary Science & Technology, Thiruvananthapuram on 25-27 July 2022.

47.  Haritha V S, S.R Sarath Kumar and R.B Rakhi “Electrochemical detection of Hydrogen peroxide using Tungsten disulphide nanosheets modified electrodes.”  In the 6th International Conference on Recent Advances in Material Chemistry, Feb 17-19, 2022 Department of Chemistry, SRM institute

48.  Sophy Mariam Varghese and R.B Rakhi “Improved Rate Performance of Carbide Derived Carbon Supercapacitor Electrodes by KOH Activation” in the International Conference on Women in Electrochemistry (ICWEC-23) on 7th-8th April 2023 organized by The Electrochemical Society of India at Indian Institute of Science Campus, Bengaluru (Oral Presentation).

49.  P.M. Anjana, S.R. Sarath Kumar, and R.B. Rakhi, “Symmetric Supercapacitors based on MnCo2S4 nanoflower directly grown over nickel foam”, International Conference on Women in Electrochemistry (ICWEC-2023) organized by the Indian Institute of Science, Bengaluru, India during April 7 - 8th, 2023.

50.  Visakh V Mohan and R.B Rakhi “Lab - to - Land approach: Supercapacitors” in Second International Conference on Science and Technology of Advanced Materials (STAM 23) organized by Mar Athanasius College (Autonomous), Kothamangalam, Kerala, India on 18-20th April 2023.

51.  P.M. Anjana and R.B. Rakhi, “High-performance Asymmetric Supercapacitors based on MnCoSe2 nanoneedles over conducting nickel foam substrate”, National Symposium on Electrochemical Science and Technology (NSEST – 2023) organized by International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad, India during August 17 - 18th, 2023.

52.  .   Sophy Mariam Varghese, Visakh V Mohan, Sruthi Suresh, E Bhoje Gowd* and R.B Rakhi* “Exploring the electrochemical properties of polyaniline-modified Ti3C2 MXene nanosheets for advanced symmetric supercapacitors” in the International Conference on Advances in Interdisciplinary Nanoscience (ICAINS-24) organized by Department of Botany, Chemistry, Physics, & Zoology, Government College for Women, TVM, Kerala during 10-12 January 2024. (Poster Presentation)

53.  Shilpa R, K. S. Sibi, Visakh V Mohan, Sophy Mariam Varghese, S.R. Sarath Kumar*, R. B. Rakhi* “Enhanced Electrocatalytic Hydrogen Evolution Activity of Mo-based Nanostructures” in the International Conference on Advances in Interdisciplinary Nanoscience (ICAINS-24) organized by Department of Botany, Chemistry, Physics, & Zoology, Government College for Women, TVM, Kerala during 10-12 January 2024. (Oral Presentation)

54.  Aparna S M ,  R.B Rakhi “ A non- enzymatic ultrasensitive electrochemical sensor for effective urea detection based on zinc oxide/ Reduced graphene oxide(ZnO/rGO) nanocomposite modified glassy carbon electrode” in the International Conference on Advances in Interdisciplinary Nanoscience (ICAINS-24) organized by Department of Botany, Chemistry, Physics, & Zoology, Government College for Women, TVM, Kerala during 10-12 January 2024.(poster presentation)

55.  Sophy Mariam Varghese, Visakh V Mohan, Sruthi Suresh, E Bhoje Gowd* and R.B Rakhi* “Synergistically modified Ti3C2Tx MXene conducting polymer nanocomposites as efficient electrode materials for supercapacitors” in the International Conference on New Materials for Industry and Medicine (NMIM’24) organized by PG & Research Department of Chemistry, PSGR Krishnammal College for Women, Coimbatore, Tamil Nadu during 30-31 January 2024. (Oral Presentation)

56.  Shilpa R, R. B. Rakhi* “Tuning the electrocatalytic activity of MoS2 towards better hydrogen evolution” in the International Conference on New Materials for Industry and Medicine (NMIM’24) organized by PG & Research Department of Chemistry, PSGR Krishnammal College for Women, Coimbatore, Tamil Nadu during 30-31 January 2024. (Oral Presentation)

57.  Sophy Mariam Varghese, S R Sarath Kumar* and R.B Rakhi* “Carbide-derived carbon by room temperature chemical etching of MAX phase for supercapacitor application” in the International Conference on Advances in Functional Materials and Coatings (ICAFMC 2024) organized by MES Ponnani College, Ponnani during 14-16 February 2024. (Oral Presentation)

58.  Aparna S M ,  R.B Rakhi “Zinc oxide/reduced graphene oxide (ZnO/rGO) based electrochemical sensor for the detection of urea”in the International Conference on Advances in Functional Materials and Coatings (ICAFMC 2024) organized by MES Ponnani College, Ponnani during 14-16 February 2024. (Oral Presentation)

59.  Visakh V Mohan, and R.B Rakhi “Heterostructured WS2/RuO2 nanocomposites: Powering the next generation of energy storage” in the International Conference on Advances in Functional Materials and Coatings (ICAFMC 2024) organized by MES Ponnani College, Ponnani during 14-16 February 2024. (Oral Presentation)

60.  Nandana A.B., R.B. Rakhi, “Synergistic coupling of VS₂ with rGO and N,S-doped rGO toward high-energy and high-power supercapacitors” in the 3rd International Conference on Renewable Energy (ICRE 2026) held at University of Rajasthan, Jaipur during 17–18 March 2026. (Oral Presentation)

61.  Aparna S.M., R.B. Rakhi, “Electrochemical sensor based on GNP (NiO/rGO/PANI) ternary nanocomposite for effective detection of malathion, an organophosphorus pesticide” in the International Conference on Energy, Materials and Environmental Solutions (ICEMES 2025) held at Bharata Mata College, Thrikkakkara during 16–17 December 2025. (Oral Presentation)

62.  Adithya C. Anand, R.B. Rakhi, “Thiospinel NiCo₂S₄ Nanoflakes Grown on Ni Foam as Robust Electrocatalysts for Hydrogen Evolution in Alkaline Simulated Seawater” in the National Conference on Advances in Organic and Materials Chemistry (AOMC 2025) organized by CSIR–NIIST during 26–27 June 2025. (Oral Presentation)

63.  Adithya C. Anand, R.B. Rakhi, “NiCo₂S₄/S-doped rGO Nanocomposites for Efficient Electrocatalytic Water Splitting under Saline Conditions” in the International Conference on Advanced Materials and Green Technologies (ICAMGT 2025) held at Amrita Vishwa Vidyapeetham, Coimbatore during 24–27 July 2025. (Oral Presentation)

64.  Adithya C. Anand, R.B. Rakhi, “NiCo₂S₄ grown over Ni foam as High-Performance HER Electrocatalysts in Alkaline Simulated Seawater” in the International Conference on Energy, Materials and Environmental Solutions (ICEMES 2025) held at Bharata Mata College, Thrikkakkara during 16–17 December 2025. (Oral Presentation)

65.  Srihari R.S., R.B. Rakhi, “High Performance Nickel Disulfide Cathode and Sulfur-Doped Reduced Graphene Oxide Anode for Sustainable Next-Generation Battery-Type Hybrid Supercapacitors” in the International Conference on Energy, Materials and Environmental Solutions (ICEMES 2025) held at Bharata Mata College, Thrikkakkara during 16–17 December 2025. (Oral Presentation)

66.  Sophy Mariam Varghese, R.B. Rakhi, “Tailoring Ti₃C₂Tₓ MXene–Reduced Graphene Oxide Anodes Toward Enhanced Asymmetric Supercapacitor Performance” in the International Conference on Advances in Materials Science and Engineering (ICAMSE-2026) held at Seethalakshmi Ramaswami College, Tiruchirappalli during 3–4 February 2026. (Oral Presentation)

67.  Adithya C. Anand, R.B. Rakhi, “NiCo₂S₄ Nanoflakes Grown on Ni Foam as High-Performance HER Electrocatalysts in Alkaline Simulated Seawater” in the International Conference on Advances in Materials Science and Engineering (ICAMSE-2026) held at Seethalakshmi Ramaswami College, Tiruchirappalli during 3–4 February 2026. (Oral Presentation)

​​Invited Talks

​

1. R.B. Rakhi, RGO Based composites as efficient electrode Materials for high-performance supercapacitors, invited talk at ICAFM-2019 held at CSlR-NIlST, Thiruvananthapuram on 9- 10 December 2019 

2. R.B. Rakhi, The Idea of a University, invited talk as a part of the online induction programme for MA students Organized by the School of Foreign  Languges and Literature. University of Kerala, December 2020 

3. R.B. Rakhi, Electrode Materials for Supercapacitors invited talk at One week e-summer school on " Advanced Functional Materials for Energy Harvesting, Storage and Biomedical Applications during 13 - 19 May 2020  organized by Department of Physics, Bishop Moore College, Mavelikarain association with the Kerala State Higher Education Council.

4. R.B. Rakhi, An Introduction to electrochemical energy storage devices, invited talk at National Seminar on "Advances in Energy Related Materials", held at the Govt. College Kodanchery, Calicut on 31-12-2019 and 01-01-2020.

5. RB Rakhi, Electrochemical Characterization of Supercapacitors, Invited talk at National workshop on Advanced Analytical Techniques in Material Science - WAATMS 2020 organized by Department of Nanoscience and Technology, University of Calicut during the period 20 - 23 Jan 2020.

6. R.B. Rakhi, Supercapacitors: Strategies for improving energy densities, invited talk at International conference on recent advances in Materials Science (ICRAMS-2020) organized by MG college, Thiruvananthapuram during the period 22 - 23 Jan 2020.

7. R.B. Rakhi, Supercapacitors, invited talk –science day lecture at the Department of Chemistry, TKM Arts and Science college, Kerala.  March 2020

8. R.B. Rakhi, Supercapacitors: an Overview, invited talk –science day lecture at the Department of Chemistry, CUSAT, Kerala as a part of   PRAGYAN-2020. 

9. R.B. Rakhi, Molybdenum Dichalcogenide based Supercapacitors, invited talk at the National Conference on Material Science and Technology (NCMST 2021), held at Indian Institute of Space Science and Technology, Thiruvananthapuram (Virtual), during 29–31 December 2021.

10. R.B. Rakhi, Reduced Graphene Oxide Based Nanocomposite Electrode Materials for Supercapacitors, invited talk at the MRSI-AGM Conclave 2021, held at Indian Institute of Technology Madras, Chennai (Virtual), during 20–23 December 2021.

11. R.B. Rakhi, MoS₂ Nanostructures for Supercapacitor Applications, invited talk at Recent Advances in the Physics of Materials (RAPM-2021), held at CSIR-National Institute for Interdisciplinary Science and Technology (Virtual), on 9–10 December 2021.

12. R.B. Rakhi, MoS₂ Based Supercapacitors, invited talk at the International Conference on Materials–Properties, Measurements and Applications (ICMPMA 2022), held at Fatima Mata National College, Kerala, during 9–13 May 2022.

13. R.B. Rakhi, The Wondrous World of CNTs, invited talk at the National Seminar on Recent Trends in Energy and Environment (NSREE-2K22), held at Sree Narayana College Sivagiri, Varkala, on 8–9 December 2022.

14. R.B. Rakhi, Strategies for Improving Energy Density of Supercapacitors, invited talk at the National Conference on Research – Catalyst for National Development (RCND-2024), held at St. Thomas College, Thrissur, Kerala, on 2 March 2024.

15. R.B. Rakhi, Electrode Materials for Supercapacitors, invited talk at the International Conference on Advances in Functional Materials and Coatings (ICAFMC 2024), held at MES College Ponnani, Ponnani, Kerala, during 14–16 February 2024.

16. R.B. Rakhi, Supercapacitors: Powering the Future Beyond Batteries, invited talk at the Global Science Festival of Kerala, held at Thiruvananthapuram, Kerala, on 16 February 2024.

17. R.B. Rakhi, Supercapacitors, invited talk at the International Conference on Advances in Interdisciplinary Nanoscience for Women (ICAINS-2024), held at Government College for Women, Thiruvananthapuram, Kerala, during 9–11 January 2024.

18. R.B. Rakhi, Electrochemical Energy Storage Devices, invited talk at the National Seminar on “Electrochemistry – The Future of Energy Storage”, held at Fatima Mata National College, Kollam, Kerala, on 17 November 2023.

19. R.B. Rakhi, Supercapacitors, invited talk at the National Seminar on Recent Trends in Materials Science: Energy Related Materials, held at Arts and Science College, Kozhikode, Kerala, during 13–15 November 2023.

20. R.B. Rakhi, Nanostructure Electrode Materials for Energy Storage, invited talk at the National Workshop on Emerging Trends in Nanotechnology, held at University of Kerala, during 20–24 May 2024.

21. R.B. Rakhi, Strategies for Enhancing Energy Density in Aqueous Supercapacitors, invited talk at the National Workshop on Advanced Energy Storage Materials and Device Fabrication, held at University of Calicut, during 27–31 May 2024.

22. R.B. Rakhi, Fundamentals of Electrochemical Capacitors, invited talk at the National Workshop on Energy Materials and Environment (EME 2024), held at Catholicate College, Pathanamthitta, on 13–14 June 2024.

23. R.B. Rakhi, Exploring the Potential of Molybdenum Dichalcogenides as Efficient Electrode Materials for Supercapacitors, invited talk at the International Union of Materials Research Societies – International Conference in Asia 2024 (IUMRS-ICA 2024), held at Devi Ahilya Vishwavidyalaya, Indore, during 3–6 December 2024.

24. R.B. Rakhi, Supercapacitors, invited talk at the National Workshop on Energy, Sustainability & Climate Resilience in the Modern World, held at Vidya Academy of Science & Technology Technical Campus, during 2–7 December 2024.

25. R.B. Rakhi, Optimizing Molybdenum Dichalcogenides for High-Efficiency Supercapacitor Electrodes, invited talk at the International Symposium on Innovative Materials for Energy and Environment 2024 (IMEE 2024), held at Cochin University of Science and Technology, during 11–13 December 2024.

26. R.B. Rakhi, MoS₂-Based Electrodes for High-Performance Supercapacitors, invited talk at the International Symposium on Electrochemical Science and Technology (iSAEST-13), held at Uday Samudra Leisure Beach Hotel, Thiruvananthapuram, during 8–10 January 2025.

27. R.B. Rakhi, Unveiling the Catalytic Potential of Molybdenum Dichalcogenides for Hydrogen Evolution Reaction, invited talk at the 4th International Conference on Optoelectronic and Nanomaterials for Advanced Technology (icONMAT 2025), held at Cochin University of Science and Technology, during 11–14 February 2025.

28. R.B. Rakhi, Exploring the Potential of Molybdenum Dichalcogenides as Efficient Catalyst Materials for Electrocatalytic HER, invited talk at the 24th National Symposium on Catalysis for Sustainable Chemicals, Materials & Energy (CSCME-2025), held at Thapar Institute of Engineering and Technology, during 24–26 February 2025.

29. R.B. Rakhi, Nanotechnology: Tiny Solutions to Big Challenges, invited talk at the National Seminar “Navigating New Frontiers: Trends & Insights in Interdisciplinary Research”, held at NSS College for Women, Thiruvananthapuram, during 17–21 February 2025.

30. R.B. Rakhi, How Universities Shape a Successful Research Career: A Personal Narrative Reflection, invited talk at the International Conference on Women Shaping a Sustainable Future: Converging Science and Society, held at University of Kerala, during 5–17 December 2025.

31. R.B. Rakhi, Ti-Based MXenes as Efficient Electrode Materials for Supercapacitors, invited talk at the International Conference on Energy, Materials and Environmental Solutions (ICEMES 2025), held at Bharata Mata College, Thrikkakara, during 6–17 December 2025.

32. R.B. Rakhi, Ti-Based MXenes and Their Hybrids as Efficient Electrode Materials for Sustainable Energy Storage Devices, invited talk at the International Conference on Sustainable Technologies for Energy and Environment (ICSTEE 2025), held at PSG Institute of Advanced Studies, Coimbatore, during 27–29 November 2025.

33. R.B. Rakhi, Carbon-Based Nanomaterials, invited talk at the National Seminar on Nanomaterials, held at St. Joseph’s College, Irinjalakuda, on 10 September 2025.

34. R.B. Rakhi, Supercapacitors: Strategies for Improving the Energy Densities, invited talk at the Workshop on Advanced Materials & Sustainable Energy Technologies (WAMSET 2025), held at University of Kerala, during 29 July–2 August 2025.

35. R.B. Rakhi, Supercapacitors, invited talk at the International Conference on Clean Energy and Environment for a Sustainable Future (ICEESF-2025), held at Mar Athanasius College (Autonomous), Kothamangalam, during 22–23 August 2025.

36. R.B. Rakhi, Engineering Ti-Based MXenes and Their Hybrids for High-Performance Supercapacitor Applications, invited talk at the International Conference on Green Hydrogen and Energy Technology (ICGHET 2026), held at SRM Institute of Science and Technology, during 8–10 January 2026.

37. R.B. Rakhi, Ti-Based MXenes for High-Performance Supercapacitors, invited talk at the International Conference on Advanced Materials, Green Energy & Sustainability (ICAMGES 2026), held at University of Kerala, during 5–7 February 2026.

38. R.B. Rakhi, Ti-based MXenes as Emerging 2D Materials for High-Performance Supercapacitor Applications, invited talk Graphene India  2026  cpnference, held at Kochi, during 9-12 March 2026.