Air electrode catalyst material, solid oxide fuel cell system, and method of manufacturing the air electrode catalyst material

A method of manufacturing an air electrode catalyst material to be used in solid oxide fuel cells, comprising:

• arranging a first electrode material and a second electrode material so as to be adjacent to each other, the first electrode material being represented by a general formula (1):
• AxByO3-δ (wherein, A contains at least one element selected from the group consisting of Mg, Ca, Sr, Ba, Sc, Y, and lanthanoid element;
• B contains at least one element selected from the group consisting of Mn, Fe, Co, and Ni;
• and δ indicates an amount of oxygen deficiency or oxygen excess for matching the valence number of the perovskite oxide), in which a ratio x/y of the A to the B is 0.80≦x/y<1.25, and the second electrode material having a ratio x/y of the A to the B in the general formula (1) of 1.5≦x/y≦2.5;
• and
• calcining the first electrode material and the second electrode material, which are arranged so as to be adjacent to each other, at a temperature higher than or equal to 450° C.