| 摘要 |
PURPOSE:To provide an electrode material, which costs low and is good on stability, instead of noble metals and perovskite type double oxides by composing the electrode material, which is used for an air electrode of a solid electrolyte type fuel cell, an electrode of a solid electrolyte type oxygen sensor, and the like, of cobalt-manganese double oxide including spinel crystal structure. CONSTITUTION:CoxMn3-xO4 is used for cobalt-manganese double oxide. In this chemical formula, (x) is set to 0.1<=x<=1.5. A percentage content of spinel crystal structure in an electrode material is desirably 50weight% or more, and is more desirably 70weight% or more. This means that mutual contact between spinel particles is difficult to maintain and electrode performance is deteriorated when the spinel crystal structure content is too small. The material, includes platinum and palladium for imparting more element conductivity, zirconium oxide and cerium oxide for imparting more oxygen ion conductivity, glass group inorganic binder for improving contact property with a solid electrolyte, and the like on condition that a spinel structure characteristic is not damaged. |
