Performance of Solid Oxide Fuel Cells with Controlled Microstructure of Anode Substrate

Solid oxide fuel cells (SOFCs) have been developed while pursuing low production cost and high performance with anode-supported planar type single cells at Korea Electric Power Research Institute. Anode-supported single cells have been manufactured by press molding, screen printing, and co-firing. They have been formed in the size 5 x 5 cm 2 and about 1.8 mm thick. The structure of anode-supported planar cells was used to investigate internal resistance and anode polarization resistance for improved performance. In our study, an important factor for determining cell performance was found to be the anode raw material quality assurance. The manufactured cells were evaluated on the basis of their microstructure and electrochemical performance. We have significantly improved cell performance during the past few years.