Cu-Co Bimetallic Anodes for Direct Utilization of Methane in SOFCs

Cu-Co bimetallic mixtures with ceria and YSZ have been investigated as solid oxide fuel cell (SOFC) anodes. While pure Co is unstable in dry CH4 at 1073 K due to severe carbon formation, Cu-Co mixtures with even 90 wt% Co showed only small amounts of carbon following exposure to dry CH4 for 2 h at 1...

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Published inElectrochemical and solid-state letters Vol. 8; no. 1; pp. A48 - A51
Main Authors Lee, Shung-Ik, Ahn, Kipyung, Vohs, John M., Gorte, Raymond J.
Format Journal Article
LanguageEnglish
Published 2005
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Summary:Cu-Co bimetallic mixtures with ceria and YSZ have been investigated as solid oxide fuel cell (SOFC) anodes. While pure Co is unstable in dry CH4 at 1073 K due to severe carbon formation, Cu-Co mixtures with even 90 wt% Co showed only small amounts of carbon following exposure to dry CH4 for 2 h at 1073 K. Cells based on Cu-Co mixtures showed improved performance in both H2 and CH4 compared to cells prepared with only Cu. Finally, a cell with a 50:50 ratio of Cu and Co was shown to be stable for 500 h in humidified (3 mol% H2O) CH4 at 1073 K.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1099-0062
DOI:10.1149/1.1833678