Sylvain LE TONQUESSE seminar

High texturation of thermoelectric CrSi2 using a slip-casting process - an experimental and theoretical study

Laboratory for Innovative and Key Materials, Tsukuba, Japan

Tuesday, October 12, 2021 - 10:30 a.m.
University of Rennes 1 – Beaulieu Campus
Building 10B, 1st floor, room 160

Solid State Chemistry and Materials team


The thermoelectric CrSi2 is a promising low-cost and non-toxic material for the mass production of reliable thermoelectric generators. The performances of bulk polycrystalline CrSi2 could be improved via crystallographic texturization but there is currently a lack of appropriate synthesis process for this class of materials. In this seminar, a novel magnetic slip-casting process to synthesize pure and highly texturized silicide materials will be discussed. The thermoelectric properties, which were measured along different texture directions, will be presented and compared to single-crystal performances. Finally, density functional theory and transport property calculations that help to better understand the origin of the large anisotropic thermoelectric properties of CrSi2 will be discussed.