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A Review and Perspective on Electrocatalysts Containing Cr for Alkaline Water Electrolysis: Hydrogen Evolution Reaction
Electrocatalysis ( IF 3.1 ) Pub Date : 2021-01-03 , DOI: 10.1007/s12678-020-00634-7
A. Falch , Sreejith P. Babu

Transition metal-based catalysts are the next most efficient catalysts for hydrogen generation in alkaline media, after Pt-group metal catalysts. Research employing transition metal-based catalysts has progressed exponentially in recent years, resulting in catalysts with excellent activity and stability. Compared to other neighbour d-metals (Ni, Fe, Co, Cu) which receive proper preference, research on Zn, Mn, and Cr containing electrocatalysts for water electrolysis is limited. Chromium in general has received limited consideration but has begun to attract the attention of researchers in the past few years. This review provides a brief discussion and evaluation of different catalysts (oxides, hydroxides, nitrides, phosphides, sulphides, carbides, etc.) incorporating different phases of the Cr component, together with a perspective on the catalytic significance of using Cr as a co-catalyst for hydrogen evolution in alkaline media. With advancements in catalysis research, electroactivity and stability showcased by Cr-based catalysts, some even competitive against precious metal catalysts, can be lucrative solutions for H2 generation.

Graphical abstract



中文翻译:

碱性水电解含Cr电催化剂的回顾与展望:析氢反应

过渡金属基催化剂是继Pt类金属催化剂之后在碱性介质中产生氢的第二种最有效的催化剂。近年来,使用基于过渡金属的催化剂的研究取得了巨大的进步,从而得到了具有优异活性和稳定性的催化剂。与受到适当偏爱的其他相邻d金属(Ni,Fe,Co,Cu)相比,用于水电解的含Zn,Mn和Cr的电催化剂的研究有限。总体上,铬受到的关注有限,但在过去几年中已开始引起研究人员的注意。本综述简要讨论和评估了不同组分(包括铬组分)的催化剂(氧化物,氢氧化物,氮化物,磷化物,硫化物,碳化物等),以及使用Cr作为助催化剂在碱性介质中析氢的催化意义的观点。随着催化研究的发展,铬基催化剂展现出的电活性和稳定性,甚至可以与贵金属催化剂竞争,可以成为H的有利解决方案。2代。

图形概要

更新日期:2021-01-03
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