YBaCuO-type perovskites as potential air electrodes for SOFCs. The case of YSr2Cu2FeO7+δ

Sara A. López-Paz; Rafael Marín-Gamero; Xabier Martínez de Irujo-Labalde; Jorge Sánchez-Marcos; Domingo Perez-Coll; Miguel Ángel Alario y Franco; Susana García-Martín

doi:10.1039/D1TA00111F

You do not have JavaScript enabled. Please enable JavaScript to access the full features of the site or access our non-JavaScript page.

YBaCuO-type perovskites as potential air electrodes for SOFCs. The case of YSr₂Cu₂FeO_7+δ†

Sara A. López-Paz,^a Rafael Marín-Gamero,

^a Xabier Martínez de Irujo-Labalde,^ab Jorge Sánchez-Marcos,^c Domingo Perez-Coll,

^d Miguel Ángel Alario y Franco^a and Susana García-Martín

*^a

Author affiliations

* Corresponding authors

^a Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
E-mail: sgmartin@ucm.es

^b Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, Oxford OX1 3QR, UK

^c Departamento de Química Física Aplicada, Universidad Autónoma de Madrid, 28049 Madrid, Spain

^d Instituto de Cerámica y Vidrio, CSIC, Cantoblanco, 28049 Madrid, Spain

Abstract

The electrochemical properties of YSr₂Cu₂FeO_7+δ with YBaCuO-type structure have been studied. The temperature dependent oxygen content of this oxide has a marked influence on its p-type conducting behavior, since topochemical oxygen release occurs on heating above 673 K while reversible oxygen uptake takes place on cooling. Mixed valence Fe³⁺/Fe⁴⁺ and Cu²⁺/Cu³⁺ in combination with anion vacancies within the oxygen-sublattice suggest mixed (electronic and ionic) conductivity in this oxide. Electrochemical measurements indicate that YSr₂Cu₂FeO_7+δ shows high oxygen reduction reaction activity at intermediate temperatures, revealing its potential applications as an air electrode in SOFCs.

Download options Please wait...

Supplementary files

Supplementary information PDF (901K)

Article information

DOI: https://doi.org/10.1039/D1TA00111F
Article type: Paper
Submitted: 05 Jan 2021
Accepted: 07 Mar 2021
First published: 08 Mar 2021

Download Citation

J. Mater. Chem. A, 2021,9, 8554-8560

Permissions

Request permissions

YBaCuO-type perovskites as potential air electrodes for SOFCs. The case of YSr₂Cu₂FeO_7+δ

S. A. López-Paz, R. Marín-Gamero, X. Martínez de Irujo-Labalde, J. Sánchez-Marcos, D. Perez-Coll, M. Á. Alario y Franco and S. García-Martín, J. Mater. Chem. A, 2021, 9, 8554 DOI: 10.1039/D1TA00111F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Social activity

Fetching data from CrossRef.
This may take some time to load.

Journal of Materials Chemistry A