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As the key material of proton exchange membrane fuel cell (PEMFC),catalyst determines not only the efficiency and stability of the fuel cell system,but also the manufacturing cost and commercialization process of fuel cell.The carbon supported Pt nanoparticles are the most widely used catalyst for cathode and anode of PEMFC.Unfortunately,the corrosion of the carbon support can lead to a decrease of catalyst performance,stability and lifetime.And then,the research on unsupported Pt catalyst is very important for the commercialization of PEMFC.