The method of producing a dispersion of the electrode catalyst, the dispersion of electrode catalyst, a method of manufacturing an electrode catalyst, the electrode catalyst, electrode structure, the membrane electrode assembly, fuel cell and air cells

Particulate carrier dispersed in a solvent, and by using the raw material mixed solution compound is dissolved containing a noble metal element in the solvent, the electrode catalyst comprising the step of supporting the noble metal on the surface of the support by electrodeposition a method of manufacturing a dispersion, the carrier has an oxygen reducing ability, and manufacturing method of a dispersion of electrocatalyst is a substance that does not contain a noble metal element.