AIR ELECTRODE MATERIAL POWDER OF SOLID OXIDE FUEL CELL, AIR ELECTRODE AND SOLID OXIDE FUEL CELL

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PROBLEM TO BE SOLVED : To provide air electrode material powder allowing miniaturization of an air electrode structure for realizing high performance of an air electrode of a solid oxide fuel cell. SOLUTION : This air electrode material powder is perovskite composite oxide powder expressed by general formula ABO3 where A comprises one or more kinds of elements selected from a group of La and rare-earth elements and one or more kinds of elements selected from a group of Sr, Ca and Ba, and B comprises one or more kinds of elements selected from a group of Mn, Co, Fe, Ni and Cu. In the air electrode material powder, the average particle diameter is not greater than 1 μm and the width of particle size distribution is limited within a predetermined range. COPYRIGHT : (C)2006, JPO&NCIPI