Research

Physical Sciences

Title :

Delafossite based high temperature thermoelectric materials and devices

Area of research :

Physical Sciences

Focus area :

Thermoelectric Properties

Principal Investigator :

Ms. Jamshina Sanam Pk, University Of Calicut, Kerala (673635)

Timeline Start Year :

2024

Timeline End Year :

2028

Contact info :

Details

Executive Summary :

Human activities have increased greenhouse gas concentrations, leading to increased global temperatures. Thermoelectric generators can capture waste heat and convert it into electricity, reducing the need for fossil fuels. Delafossite CuCrO2, a p-type material, has demonstrated efficiency in thermoelectricity due to its unique structure. A novel approach to improve thermoelectric conversion efficiency involves controlling the decrement of thermo power by altering magnetic properties with magnetic or non-magnetic dopants. This breakthrough contributes to optimizing thermoelectric performance.

Thermoelectric technology converts waste heat into electricity, addressing environmental issues and energy crises. Materials like Bi2Te3 and Bi2Se3 have high efficiency, but their use is limited due to toxicity and rarity. Delafossite ABO2typesOxide compounds have layered superlattice structures, making them ideal for high-temperature thermoelectric devices. A study reveals enhanced conductivity and Seebeck coefficient in Mg-doped CuCrO2 crystallites. The researchers also explored the incorporation of non-magnetic dopants, such as Zn, into the lattice, resulting in improved thermal and optical properties. The primary objective is to fabricate thermoelectric modules with high temperature stability.

Total Budget (INR):

26,95,680

Organizations involved