Durability of nano-structured anodes against coking and sulfur poisoning

Another approach to solving the problems is replacing the Ni in the anode with a much less catalytically active metal, such as Cu, or metal alloy (Kim et ah, 2001 Park et ah, 2000). Cu is an excellent electronic conductor but a poor catalyst for CC bond activation. Therefore, carbon formation, which troubles the use of Ni cermet, is avoided bythe replacement of Cu. 

LSCs are attractive cathode materials for intermediate temperature SOFCs in terms of its high catalytic activity and surface exchange coefficient. However, the material also has a large coefficient of thermal expansion, which is about 23 x 10 almost twice that of typical electrolytes, such as YSZ and doped ceria electrolytes (11-12 x 10 K ). The TEC mismatch between the electrolyte and cathode will result in a thermal stress, which is responsible for delamination at the 

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