TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The catalyst carbon backbone is carbon nanowires. The doping metal is iron, cobalt and/or nickel. The catalyst carbon backbone is doped with nitrogen and/or sulfur. The nanowire length is 1-30 microns and diameter is 50-200 nm. Preferred Method: In the step (i), the conductive polymer is polythiophene or polythiophene derivative, or polypyrrole or polyaniline or polypyrrole derivative or polyaniline derivative. The conductive polymer concentration is 0.01-0.5 M. The metal containing ions or molecules are ferrocene, ferrocene acid, ferrocene methanol, phthalocyanine iron, ferrous acetate, ferrous chloride, ferrous nitrate, cobalt acetate, cobalt chloride, cobalt nitrate, nickel acetate, nickel chloride and/or nickel nitrate. The concentration of metal-containing ions or molecules is 0.001-0.1 M. If the conductive polymer is polythiophene or polythiophene derivative, the resulting catalyst is doped with carbon backbone sulfur. If the conductive polymer is polypyrrole or polyaniline or polypyrrole derivative or polyaniline derivative, the resulting catalyst is doped with carbon backbone nitrogen. The conductive polymer includes polythiophene and/or polythiophene derivative and at the same time contains polypyrrole, polypyrrole, polyaniline derivative and/or polyaniline derivative. The resulting catalyst doped with carbon backbone nitrogen and sulfur. The electrodeposition method of gas diffusion layer specifically uses graphite plate, copper, iron, platinum film or palladium film as the conductive substrate. The conductive substrate is the working electrode, saturated calomel electrode or silver-silver chloride electrode is reference electrode and platinum sheet metal is counter electrode are the three-electrode system for electrodeposition. The solvent used for electrodeposition is water, ethylene glycol, acetone, acetonitrile, dimethylformamide, dimethylacetamide or propylene carbonate acetate solution. The electrolytic solution added during electrodeposition of supporting electrolyte is p-toluene sulfonate, sodium dodecyl sulfate, beta -naphthalenesulfonic acid, bis trimethylsilyl trifluoroacetamide, perchlorate, sulfate salt and/or chlorides. The concentration of electrolyte solution of supporting electrolyte in electrodeposition process is 0.01-0.5 M. When electrolytic solution is an aqueous solution the reference electrode is saturated calomel electrode and metal-containing ions or molecules are ferrocene acid, ferrocene methanol, acetic acid, ferrous chloride, ferrous nitrate, cobalt acetate, cobalt chloride, cobalt nitrate, nickel acetate, nickel chloride and/or nickel nitrate. When electrolytic solution is non-aqueous electrolyte solution, the reference electrode is silver-silver chloride electrode and metal-containing ions or molecules are ferrocene, ferrocene acid, ferrocene methanol, phthalocyanine iron, ferrous acetate, cobalt acetate and/or nickel acetate. The electrodeposition potential with respect to calomel electrode or silver-silver chloride electrode is 0.6-0.9 V. The electrodeposition time period is 0.25-1 h.