Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Rare Earth (La, Pr and Sm) Doped Sr1‐yCo1‐xFexO3 as Cathode in SOFC

Selene Díaz-González
ORCID logo ,
Roberto Campana
* ORCID logo ,
Rocío Andújar
,
Adrián Pardo
,
Beatriz Gil-Hernández
,
Antonio D. Lozano-Gorrín
*
Version 1 : Received: 4 December 2023 / Approved: 5 December 2023 / Online: 5 December 2023 (14:26:16 CET)

A peer-reviewed article of this Preprint also exists.

Díaz-González, S.; Campana, R.; Lapeña, R.A.; Pardo, A.; Gil-Hernández, B.; Lozano-Gorrín, A.D. RE0.01Sr0.99Co0.5Fe0.5O3 (RE = La, Pr, and Sm) Cathodes for SOFC. Crystals 2024, 14, 143. Díaz-González, S.; Campana, R.; Lapeña, R.A.; Pardo, A.; Gil-Hernández, B.; Lozano-Gorrín, A.D. RE0.01Sr0.99Co0.5Fe0.5O3 (RE = La, Pr, and Sm) Cathodes for SOFC. Crystals 2024, 14, 143.

Abstract

This study focuses on the synthesis, characterization and study of a new perovskite-type materials as cathode in SOFC. The synthesized doped perovskites have been successfully synthesized with high purity. The electrochemical performance of these materials was extensively examined through the characterization of I-V-P and EIS curves at the three temperatures: 750, 800 and 850 °C. Where it is revealing a substantial reduction of total resistances by approximately 50% and 70%, accom-panied by an impressive increase in power densities by around 200% and 300%, respectively. The cell featuring Sm0.01Sr0.99Fe0.5Co0.5O3 exhibited the most commendable electrochemical properties at each temperature, following closely were Pr0.01Sr0.99Fe0.5Co0.5O3 and La0.01Sr0.99Fe0.5Co0.5O3.

Keywords

perovskite; solid state; rare earth; Rietveld refinement; SOFC

Subject

Chemistry and Materials Science, Ceramics and Composites

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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