Alternative Ni-Alloy Cermet Anode Materials for SOFCs

Solid oxide fuel cell (SOFC) is a promising electrochemical energy conversion device that can directly produce electricity from chemical fuels. On the other hand, in the Ni-zirconia cermet currently used for the SOFC anode, the electron conducting pathways through the Ni metal phase can be easily de...

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Bibliographic Details
Published inECS transactions Vol. 91; no. 1; pp. 1889 - 1896
Main Authors Ishibashi, Yusuke, Futamura, Shotaro, Tachikawa, Yuya, Matsuda, Junko, Shiratori, Yusuke, Taniguchi, Shunsuke, Sasaki, Kazunari
Format Journal Article
LanguageEnglish
Published The Electrochemical Society, Inc 10.07.2019
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Summary:Solid oxide fuel cell (SOFC) is a promising electrochemical energy conversion device that can directly produce electricity from chemical fuels. On the other hand, in the Ni-zirconia cermet currently used for the SOFC anode, the electron conducting pathways through the Ni metal phase can be easily destroyed by redox processes, where Ni oxidation/reduction (redox) results in significant volume changes, leading to deterioration of the electrochemical performance. In this study, various anodes using Ni-based alloys as alternative materials for Ni are prepared. Their electrochemical performance and redox stability are evaluated. In particular, Ni-Co alloy cermet exhibits better durability against redox cycling.
ISSN:1938-5862
1938-6737
1938-6737
1938-5862
DOI:10.1149/09101.1889ecst