析氧
过电位
电解
镍
制氢
阳极
分解水
电解水
氢
聚合物电解质膜电解
化学
碱性水电解
无机化学
阴极
高压电解
阴极保护
电力转天然气
材料科学
化学工程
催化作用
冶金
电化学
电极
有机化学
电解质
物理化学
工程类
光催化
生物化学
作者
Rufei Zhang,Ao Xie,Linting Cheng,Zhiqun Bai,Yang Tang,Pingyu Wan
摘要
Hydrogen production through alkaline water electrolysis holds great promise as a scalable solution for renewable energy storage and conversion. The development of non-precious metal-based electrocatalysts with low-overpotential for alkaline water electrolysis is essential to decrease the cost of electrolysis devices. Although the Ni-based and Fe-based electrocatalysts have been commercially employed in the cathodic hydrogen evolution reaction (HER) and anodic oxygen evolution reaction (OER), it is imperative to persistently pursue the advancement of highly efficient electrocatalysts with enhanced current density and fast kinetics. This feature article overviews the progress of NiMo HER cathodes and NiFe OER anodes in the traditional alkaline water electrolysis process for hydrogen production, including the detailed mechanisms, preparation strategies, and structure-function relationship. Moreover, recent advances of Ni-based and Fe-based electrodes in the process of novel alkaline water electrolysis, involving small energetic molecule electro-oxidation and redox mediator decoupled water electrolysis, are also discussed for hydrogen production with low cell voltage. Finally, the perspective of these Ni-based and Fe-based electrodes in the mentioned electrolysis processes is proposed.
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