Thermoelectric and electrical properties of triple-conducting multicomponent oxides based on substituted barium cerate-zirconate

Martyna Maria Czudec; Daniel Jaworski; Jagoda Budnik; Aleksandra Dorota Mielewczyk-Gryń; Tamilarasan Subramani; Maria Gazda; Alexandra Navrotsky; Tadeusz Miruszewski

doi:10.1039/d4dt01992j

Thermoelectric and electrical properties of triple-conducting multicomponent oxides based on substituted barium cerate-zirconate

Abstract

Multicomponent oxides often have exceptional thermal stability and interesting electronic properties. The present work presents the thermoelectric and electrical properties of the Ba(Zr0.2Hf0.2Sn0.2Ti0.2Fe0.2)O3−δ and Ba(Zr0.1Hf0.1Sn0.1Ti0.1Co0.1Ce0.1Bi0.1Fe0.1Y0.1Zn0.1)O3−δ multicomponent perovskites. Single-phase cubic perovskites were synthesized using the solid-state reaction method. They were characterized using X-ray diffraction, drop-solution calorimetry, and thermogravimetry methods. The total electrical conduc tivity and Seebeck coefficient measurements were performed in dry and wet air at temperatures between 600 and 1050 K. It was found that Ba(Zr0.1Hf0.1Sn0.1Ti0.1Co0.1Ce0.1Bi0.1Fe0.1Y0.1Zn0.1)O3−δ is thermo dynamically less stable than Ba(Zr0.2Hf0.2Sn0.2Ti0.2Fe0.2)O3−δ. Moreover, this oxide incorporates a higher amount of water and exhibits higher conductivity and lower Seebeck coefficient. Charge transport in both perovskites can be assigned to the small-polaron hopping process via electron holes. An interesting temperature dependence of the Seebeck coefficient was found and, at temperatures above 750 K, related to hopping between energetically inequivalent states

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Authors (8)

Martyna Maria Czudec (formerly: Martyna Czudec)
- SzD
Daniel Jaworski
- SzD
Jagoda Budnik
- SzD
Aleksandra Dorota Mielewczyk-Gryń (formerly: Aleksandra Mielewczyk-Gryń) dr hab. inż.
Tamilarasan Subramani
Maria Gazda prof. dr hab. inż.
Alexandra Navrotsky
Tadeusz Miruszewski dr inż.

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Category:

Articles

Type:

artykuły w czasopismach dostępnych w wersji elektronicznej [także online]

Published in:

DALTON TRANSACTIONS
ISSN: 1477-9226

Language:

English

Publication year:

2025

Bibliographic description:

Czudec M., Jaworski D., Budnik J., Mielewczyk-Gryń A., Subramani T., Gazda M., Navrotsky A., Miruszewski T., Thermoelectric and electrical properties of triple-conducting multicomponent oxides based on substituted barium cerate-zirconate, DALTON TRANSACTIONS, 2025,10.1039/d4dt01992j

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