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作 者:Linsheng Wang
机构地区:[1]Shokubai Wang Institute,Tokyo,Japan [2]National Institute for Materials Science,Tsukuba,Japan [3]The University of Electro-Communications,Tokyo,Japan
出 处:《Semiconductor Science and Information Devices》2021年第2期29-33,共5页半导体科学与信息器件(英文)
摘 要:Green hydrogen production from the electrolysis of water has good application prospect due to its renewability.The applied voltage of 1.6-2.2V is required in the traditional actual water electrolysis process although the theoretical decomposition potential of electrolyzing water is 1.23V.The high overpotential in the electrode reaction results in the high energy-consuming for the water electrolysis processes.The overpotentials of the traditional Ru,Ir and Pt based electrocatalysts are respectively 0.3V,0.4V and 0.5V,furthermore use of the Pt,Ir and Ru precious metal catalysts also result in high cost of the water electrolysis process.For minimizing the overpotentials in water electrolysis,a novel super-alloy nanowire electrocatalysts have been discovered and developed for water splitting in the present paper.It is of significance that the overpotential for the water electrolysis on the super-alloy nanowire electrocatalyst is almost zero.The actual voltage required in the electrolysis process is reduced to 1.3V by using the novel electrocatalyst system with zero overpotential.The utilization of the super-alloy nanowire type electrocatalyst instead of the traditional Pt,Ir and Ru precious metal catalysts is the solution to reduce energy consumption and capital cost in water electrolysis to generate hydrogen and oxygen.
关 键 词:Green hydrogen Zero overpotential Super-allow nanowires ELECTROCATALYSTS Electrolysis of water
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