Development of High Entropy Oxide materials for thermoelectric application

~60 % of energy is wasted in the form of heat, released directly to the environment

Thermoelectric generator: converts heat into electricity directly

Thermoelectric generator efficiency

HEOs: Achieving ultralow thermal conductivity

Oxide-based thermoelectric materials have the advantages of high-temperature stability, low toxicity and low processing cost compared to other metal-based systems.

HE effects adds up lattice distortion and creates high-order phonon scattering sites, resulting in reduced thermal conductivity.

Source: High-Entropy Perovskites: An Emergent Class of Oxide Thermoelectrics with Ultralow Thermal Conductivity | ACS Sustainable Chemistry & Engineering

Entropy stablized perovskite oxide as a potential thermoeletric material for high temperature waste heat recovery

Publication

T. Bhattacharya#, V. Kumar#, S. Aggarwal, P. Dixit, S. Das, T. Maiti, Entropy-stabilized perovskite oxide Ba0.1Ca0.1La0.05Sr0.75Ti0.85Nb0.15O3 with improved thermoelectric performance for high-temperature waste heat recovery, J. Mater. Chem. A (2026). https://doi.org/10.1039/D5TA10105K. (IF = 9.5)

V. Kumar, R. Banerjee, S. Mukherjee, P. Mondal, A. Ganguly, T. Maiti, Thermoelectric study of A-site populated (Ca0.2Bi0.2Sr0.2La0.2Pr0.2)MnO3 high entropy manganate, J. Alloys Compd. 1032 (2025) 181100. https://doi.org/10.1016/j.jallcom.2025.181100. (IF 6.3)

V. Kumar, S. Saini, T. Maiti, Study of charge transport mechanism in Ba doped Sr2CrMoO6 double perovskite mixed ionic electronic conductor, J. Appl. Phys. 133 (2023) 164104. https://doi.org/10.1063/5.0141080. (IF = 2.5)

Poster(s)

41th International Conference on Thermoelectrics (& 7th Asian Conference on Thermoelectrics) ICT/ACT2025, poster entitled "Improved thermoelectric performance of SrTiO3-based entropy-stabilized perovskite oxide for high-temperature waste heat recovery." Sendai ,Japan.
World Conference on Thermoelectrics and Materials (WCT-2023), third position in a poster entitled “Thermoelectric properties of Manganate based high entropy oxide.” Jaipur, Rajasthan
4th International Workshop on High Entropy Materials (IWHEM 2023), poster entitled “Thermoelectric properties of Manganate based high entropy oxide.” BARC, Mumbai
Padarth, Research Scholar’s Day-2023 (RSD, IIT Kanpur), poster presentation entitled “Thermoelectric study of High Entropy Oxides.” IITK, Kanpur

Research/Internship Experience(s)

Junior Research Fellow, Birla Institute of Technology, Mesra Oct 2021–Dec 2021

Development of optical coherence elastography and confocal laser scanning ophthalmoscope
for biological imaging

Principal Investigator: Dr. Raju Poddar

Master’s Project Trainee, National Metallurgical Laboratory, Jamshedpur Nov 2020–Apr 2021

Dissertation topic: Study of WSe2-based nanocomposite for photocatalytic hydrogen evolution

Supervisor(s): Dr. G. P. Singh and Dr. T. Mishra

Research Intern, National Metallurgical Laboratory Jamshedpur May–July 2019

NiCoAl-layered triple hydroxide electrochemical supercapacitor for energy storage

Supervisor: Dr. Suprabha Nayar

Research Intern, National Metallurgical Laboratory Jamshedpur Dec 2018–Jan 2019

Microplasma generation using graphene oxide-based barrier

Supervisor: Dr. Jay Chakraborty