【作者】 李作鹏； 刘卫； 潘启亮； 赵建国； 郭永；

【Author】 Zuopeng Li;Wei Liu;Qiliang Pan;Jianguo Zhao;YongGuo;School of Chemistry and Environmental Engineering,Datong University;

【机构】 山西大同大学化学与环境工程学院；

【摘要】 利用以风电为代表的可再生能源作为驱动力电解水制氢是目前最具前景的技术,其中的析氧反应（OER）由于其低效且复杂的四电子转移过程,严重影响其广泛应用^[1-2]。在本工作中,我们通电沉积法合成一系列花瓣状Ni_xFe_1-xOOH高效析氧催化剂,花瓣状形貌暴露更多的边缘缺陷,可大幅增加催化剂活性位中心。其中Ni_xFe_1-xOOH/石墨烯复合催化剂的OER起始析氧过电位约为160 mV,Tafel斜率40 mV decade^-1.,接近文献中报道的最好值。更多还原

【Abstract】 Water electrolysis for hydrogen production drived by renewable wind energy provides an environmentallyfriendly pathway to contribute towards meeting the constantly growing demand for energy supply and storage. However, the electrolysis process is greatly constrained by the kinetically sluggish oxygen evolution reaction（OER）. In this work, a series of Flower-like Oxyhydroxides Ni_xFe_1-xOOH carbon composite for OER was synthesized using electrochemical methods. Among them, Ni Fe OOH/graphene exhibited superior OER performance with overpotential of 160 mV and Tafel slope of 40 mV decade^-1.更多还原