TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Metal: The catalyst metal is conjugated with noble metal and transition metal. The noble metal is palladium, iridium, rhodium and/or platinum, preferably iridium, rhodium or palladium. The transition metal is cobalt, iron, molybdenum, and/or chromium, preferably cobalt.Preferred Composition: The amount of noble metal in catalyst material is 20-60 wt.%.Preferred Material: The electroconductive material is metal, semiconductor, carbon-type compound and/or conductive polymer. The catalyst material further contains another metal and/or its iron, and is doped with anion. The catalyst material has particle shape, fiber shape, hollow shape, cone shape or horn shape.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compound: The monocyclic compound is pyrrole, dimethyl pyrrole, pyrrole-2-carboxy aldehyde, pyrrole-2-alcohol, vinylpyridine, aminobenzoic acid, aniline and/or thiophene. The polynuclear complex molecule is polypyrrole complex, polyvinyl pyridine complex, polyaniline complex or polythiophene complex. A nitrogen-containing low molecular heterocyclic compound is coordinated to catalyst metal as auxiliary ligand. The low molecular heterocyclic compound is pyridine and/or phenanthroline.Preferred Process: The polynuclear complex molecule is obtained by carrying out electrolytic polymerization of complex monocyclic compound. The catalyst material is heated. The raw material of catalyst material is highly purified. EXAMPLE - Pyrrole (5.4 ml) and carbon particles (3 g) were dissolved in methanol (200 ml) containing 0.1 M ammonium perchlorate, and argon deaeration was carried out for 30 minutes. Electrolytic polymerization was performed for 45 minutes, and polypyrrole coated carbon particles were obtained. Cobalt acetate (4.1) and the obtained carbon particles (2) were added to a flask, methanol was added and refluxed for 2 hours after performing deaeration for 30 minutes. Solid substance for filtered, and carbon particles were reduced under pressure at 120degreesC for 3 hours. Pyrrole cobalt complex coated with electrolytic polymerized film was obtained as catalyst material with high catalytic activity.