Ce Filling Limit and Its Influence on Thermoelectric Performance of Fe₃CoSb₁₂-Based Skutterudite Grown by a Temperature Gradient Zone Melting Method.

ABSTRACT: CoSb₃-based skutterudite is a promising mid-temperature thermoelectric material. However, the high lattice thermal conductivity limits its further application. Filling is one of the most effective methods to reduce the lattice thermal conductivity. In this study, we investigate the Ce filling limit and its influence on thermoelectric properties of p-type Fe₃CoSb₁₂-based skutterudites grown by a temperature gradient zone melting (TGZM) method. Crystal structure and composition characterization suggests that a maximum filling fraction of Ce reaches 0.73 in a composition of Ce_0.73Fe_2.73Co_1.18Sb₁₂ prepared by the TGZM method. The Ce filling reduces the carrier concentration to 1.03 × 10²⁰ cm^-3 in

SUBMITTER: Li XG 

PROVIDER: S-EPMC8620759 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature