Abstract Scope |
High energy-conversion efficiency (ZT) of thermoelectric materials has been achieved in heavy metal chalcogenides, but the use of toxic Pb or Te is an obstacle for wide applications of thermoelectricity. Development of high-efficiency and eco-friendly thermoelectric materials has been a challenging issue. In this talk, I will introduce our recent works on the development of eco-friendly high-performance thermoelectric materials using concept of mixed anions. Here, we introduce new design routes for strong phonon scattering and ZT enhancement of transition metal oxide, SrTiO3 by hydride anion (H–) substitution [Adv. Funct. Mater. 6, 25819 (2023).] and also recent discovery of high ZT ~2.1 in inverse perovskite Ba3SiO without using toxic elements [Adv. Sci. 11, 2307058 (2024).]. I will also introduce other new thermoelectric oxides at the conference. |