Composites between Perovskite and Layered Co-Based Oxides for Modification of the Thermoelectric Efficiency.

ABSTRACT: The common approach to modify the thermoelectric activity of oxides is based on the concept of selective metal substitution. Herein, we demonstrate an alternative approach based on the formation of multiphase composites, at which the individual components have distinctions in the electric and thermal conductivities. The proof-of-concept includes the formation of multiphase composites between well-defined thermoelectric Co-based oxides: Ni, Fe co-substituted perovskite, LaCo0.8Ni0.1Fe0.1O3 (LCO), and misfit layered Ca3Co4O9. The interfacial chemical and electrical properties of composites are probed with the means of SEM, PEEM/XAS, and XPS tools, as well as the magnetic susceptibility measurements. The thermoelectric power of the multiphase composites is evaluated by the dimensionless figur

SUBMITTER: Harizanova S 

PROVIDER: S-EPMC8624505 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature