Abstract
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 CH 4 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 CH 4 for 2 h at 1073 K. Cells based on Cu-Co mixtures showed improved performance in both H 2 and CH 4 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 % H 2 O) CH 4 at 1073 K.
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