A Novel Self-Assembled Cobalt-Free Perovskite Composite Cathode with Triple-Conduction for Intermediate Proton-Conducting Solid Oxide Fuel Cells

Author(s)

Hua Tong
Min Fu
Yang Yang
Fanglin Chen, University of South Carolina - ColumbiaFollow
Zetian Tao

Document Type

Article

Abstract

A traditional composite cathode for proton-conducting solid oxide fuel cells (H-SOFCs) is typically obtained by mixing cathode materials and proton conducting electrolyte of BaCe_0.7Y_0.2Z_r0.1O_3–δ (BZCY), providing chemical and thermal compatibility with the electrolyte. Here, a series of triple-conducing and cobalt-free iron-based perovskites as cathodes for H-SOFCs is reported. Specifically, BaCe_xFe_1–xO_3–δ (x = 0.36, 0.43, and 0.50) shows various contents of two single phase perovskites with an in situ heterojunction structure as well as triple conductivity by tailoring the Ce/Fe ratios. The cell performance with the optimized BaCe_0.36Fe_0.64O_3–δ (BCF36) cathode composition reaches 1056 mW cm^₋₂ at 700 °C. Moreover, a record cell performance of 1525 mW cm−2 at 700 °C is obtained by modifying the BCF36 cathode microstructure through a spraying method, demonstrating high promise with Co-free cathodes for H-SOFCs.

Digital Object Identifier (DOI)

https://doi.org/10.1002/adfm.202209695

Publication Info

Published in Advanced Functional Materials, 2022.

Rights

© 2022 The Authors. Advanced Functional Materials published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

APA Citation

Tong, H., Fu, M., Yang, Y., Chen, F., & Tao, Z. (2022). A novel self‐assembled Cobalt‐free perovskite composite cathode with triple‐conduction for intermediate proton‐conducting solid oxide fuel cells. Advanced Functional Materials, 2209695. https://doi.org/10.1002/adfm.202209695