Issue 19, 2022

BaTb0.3Fe0.7O3−δ: a new proton-conductor-derived cathode for proton-conducting solid oxide fuel cells

Abstract

BaTbO3 is a much less focused proton-conductor than the traditional BaCeO3–BaZrO3 system due to its lower proton conductivity. However, the present study reveals that using BaTbO3 as the parent material to form the new BaTb0.3Fe0.7O3−δ (BTF) can boost the cathode performance for proton-conducting solid oxide fuel cells (H–SOFCs). Compared with the traditional Fe-doped BaZrO3 (BZF), the electronic structure of BTF is regulated due to the presence of Tb3+ and Tb4+, leading to more abundant oxygen vacancies and improved oxygen reduction reaction activities compared with BZF, which have been demonstrated by both experiments and first-principles calculations. The slightly decreased proton diffusion by using BaTbO3 compared with BaZrO3 is compensated by the greatly enhanced oxygen diffusion and surface exchange abilities, leading to a record-high performance for the BTF cathode compared with other proton conductor-derived cathodes for H–SOFCs.

Graphical abstract: BaTb0.3Fe0.7O3−δ: a new proton-conductor-derived cathode for proton-conducting solid oxide fuel cells

Supplementary files

Article information

Article type
Communication
Submitted
21 jun 2022
Accepted
28 jul 2022
First published
28 jul 2022

Sustainable Energy Fuels, 2022,6, 4375-4382

BaTb0.3Fe0.7O3−δ: a new proton-conductor-derived cathode for proton-conducting solid oxide fuel cells

L. Zhang, G. Dai, S. Yu, C. Ma, H. Dai and L. Bi, Sustainable Energy Fuels, 2022, 6, 4375 DOI: 10.1039/D2SE00849A

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.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements