Journal
ELECTROCHEMICAL AND SOLID STATE LETTERS
Volume 8, Issue 1, Pages A48-A51Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.1833678
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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 H-2 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. (C) 2004 The Electrochemical Society.
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