| abstract |
The present invention provides a highly active electrode catalyst that is relatively inexpensive, has a relatively large amount of resources, and can be used in an acidic electrolyte at a high potential. A mixed material including the following first material and the following second material is preferably mixed by wet processing, and the mixed material is preferably subjected to conditions that allow the second material to transition to a carbon material. An electrode catalyst is obtained by calcining in the absence of oxygen. First material: one or more metal elements selected from the group consisting of groups 4A and 5A, and one or more selected from the group consisting of hydrogen atoms, nitrogen atoms, chlorine atoms, carbon atoms, boron atoms and oxygen atoms Metal compound second material composed of a non-metallic element: a carbon material precursor, preferably water-soluble. [Selection figure] None |