AIR ELECTRODE CATALYST MATERIAL, SOLID OXIDE FUEL CELL SYSTEM, AND METHOD OF MANUFACTURING THE AIR ELECTRODE CATALYST MATERIAL

摘要

An air electrode catalyst material according to an embodiment of the present invention is used in solid oxide fuel cells and includes a perovskite oxide represented by a general formula (1): AxByO3-6. A ratio x/y of the A to the B is 1.05≦x/y≦1.5, and a peak derived from a perovskite structure A1B1O3-δ is shown in a chart obtained by an X-ray diffraction measurement, and in Raman spectra, an area of absorption peak existing between 560 cm−1 and 620 cm−1 (inclusive) is larger than that between 380 cm−1 and 440 cm−1 (inclusive).

主权项

1. An air electrode catalyst material to be used in solid oxide fuel cells, comprising:
a perovskite oxide 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), wherein a ratio x/y of the A to the B is 1.05≦x/y≦1.5, and wherein a peak derived from a perovskite structure A1B1O3-δ is shown in a chart obtained by an X-ray diffraction measurement, and in Raman spectra, an area of absorption peak existing between 560 cm−1 and 620 cm−1 (inclusive) is larger than that between 380 cm−1 and 440 cm−1 (inclusive).