Development of La0.6Sr0.4TiXFe1-XO3-Based Composite Cathode Materials for Solid Oxide Fuel Cells

A new cathode material for SOFCs was developed at the R&D Center of Noritake Co., Ltd. It contains La0.6Sr0.4TixFe1−xO3−δ(0 ≤ x≤ 0.4) (LSTF) and La0.6Sr0.4CoyFe1−yO3−δ(0 ≤ y≤ 1) (LSCF). Herein, we report the results of our performance evaluation of this cathode material. The optimum composition for the composite cathode material was determined to be LSCF 70 wt%–LSTF 30 wt%. Cathodes with this optimum composition exhibited neither fractures nor delamination from the electrolyte during thermal cycling. The developed cathode material also exhibited high power density and extremely high stability toward hydrogen and ammonia fuels.