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Traditional solid oxide fuel cells (SOFCs) with Ni cermet anode are not stable operating in CH4 due to carbon deposition. Here we report excellent long-term stability of the cell with Ni/SDC anode is achieved in 3% H2O humidified CH4 in a temperature range of 700–800 °C by addition of 1wt%Sn to the porous anode. The addition of a small amount of Sn does not compromise the electrochemical performance...
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