CATALYST, METHOD FOR PRODUCING THE SAME, AND USE OF THE SAME

摘要

Disclosed is a catalyst having excellent durability and high oxygen reducing ability, which is not corroded in acidic electrolytes or at high potentials. Specifically disclosed is a catalyst characterized by being composed of niobium oxycarbonitride. Also specifically disclosed is a catalyst characterized by being composed of niobium oxycarbonitride represented by the following composition formula: NbCxNyOz (wherein x, y and z represent atomic number ratios satisfying 0.01 = x = 2, 0.01 = y = 2, 0.01 = z = 3 and x + y + z = 5).