非贵金属镍基材料用于电解水析氢电极的研究进展

Research progress of non-noble nickel-based materials for hydrogen evolution reaction

氢能以环保和高能被人们所熟知,大规模高效制氢是推动氢经济发展的关键.电解水制氢具备原料广、纯度高等优点,但商业化电解槽分解电压远大于理论分解电压(1.23 V),能耗巨大,而拥有低过电势和塔菲尔斜率的铂等贵金属催化电极含量稀少且价格昂贵.分别从镍基异质结构、镍基化合物、镍基合金及多孔结构3个方面出发,综述了镍基催化电极在电解水析氢中的研究进展.

Large-scale production of hydrogen,which is known as clean and high-energy renewable energy sources,is the key to promote the development of hydrogen economy. Hydrogen production by electrochemical water splitting via hydrogen evolution reaction（ HER） on cathodes is a promising pathway with the merits of wide materials and high purity. However,the theoretical reversible potential of the water splitting reaction of 1. 23 V is lower than that of the conventional water-alkali electrolyzers. It has been long known that platinum-based catalysts can dramatically reduce the electrolysis overpotentials and speed up the kinetics of hydrogen evolution reaction（ HER） for high efficiency water splitting. Nevertheless,the practical implementation of hydrogen production is limited by the high costs and natural scarcity of these noble metal catalysts. This review describes the most recent progress in the development of nickel-based electrode for HER from nickel-based heterostructures,compounds,nickel-based alloys and porous structures.