Progress on the perovskite-type cathode materials of solid oxide fuel cell

Cathode is an important part of solid oxide fuel cell (SOFC). The performance of cathode is very important for the performance of solid oxide fuel cell. Especially,it is crucial for the performance of low temperature SOFC. The interface resistance of cathode is about 70% -85% of overall resistance of cell. The ABO3 perovskite-type oxidate are common materials as cathode of SOFC. The structure characteristics of perovskite materials decide that the ABO3 perovskite-type oxidate is electro-ionic conductivity. The characteristics are suitable as cathode materials of SOFC. The review discussed the catalysis mechanism,fabricating methods and the performance of composite graded cathode currently under investigation for SOFC. It suggests that the performance of low temperature SOFC cathode will be enhanced by improving the micro structure of cathode.