Generating energy from waste heat...
Plasmonics and Perovskites Laboratory
Development of High Entropy Oxide materials for thermoelectric application
A large amount (~60%) of energy is wasted in the form of heat, released directly to the environment
Solution
A thermoelectric generator (TE) provides direct conversion of heat into electrical energy
TE figure of Merit (ZT)
S – Seebeck coefficient
σ - Electrical conductivity
κ - Thermal conductivity
h - Planks constant
Transport Parameters
The interdependencies of transport parameters in materials make improving ZT without deteriorating other factors challenging.
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.
Synthesis of High Entropy Oxides
@Solution method
@Solid State Reaction
Publication
Vivek Kumar, Sudha Saini, Tanmoy Maiti; Study of charge transport mechanism in Ba doped Sr2CrMoO6 double perovskite mixed ionic electronic conductor. Journal of Applied Physics 28 April 2023; 133 (16): 164104. https://doi.org/10.1063/5.0141080
Poster(s)
1. World Conference on Thermoelectrics and Materials (WCT-2023), third position in a poster entitled “Thermoelectric properties of Manganate based high entropy oxide.”
2. 4th International Workshop on High Entropy Materials (IWHEM 2023), a poster entitled “Thermoelectric properties of Manganate based high entropy oxide.”
3. Padarth, Research Scholar’s Day-2023 (RSD, IIT Kanpur), poster presentation entitled “Thermoelectric study of High Entropy Oxides.”
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