德国柏林工业大学Matthias Driess团队综述了碱性介质中高效析氢反应中缺失片段的捕捉策略与展望。 相关研究成果发表在2021年1月07日出版的国际学术期刊《德国应用化学》。

过渡金属氢氧化物（M–OH）及其异质结构（X | M–OH，其中X可以是金属、金属氧化物、金属硫系化合物、金属磷化物等）最近作为碱性水电解析氢反应（HER）的高活性电催化剂出现。金属氢氧化物中的晶格氢氧根阴离子主要负责观察这种增强的HER在碱中的活性，促进水的离解并协助第一步，即氢的吸附。

不幸的是，它们的导电性差一直是一个令人关注的问题，大大降低了它的活性。当发现具有金属和/或半导体相的异质结构氢氧化物材料能够克服这一缺陷时，取得了有趣的进展。然而，在最近发展起来的金属硫系化合物和磷化物基HER催化剂中，金属氢氧化物及其异质结构催化碱性HER领域取得的重大进展及其优越性令人遗憾地被忽略了。

与其他综述不同的是，本文从碱性HER为何困难的问题入手，通过对其评价观点、金属氢氧化物及其异质结构催化的趋势、碱性HER在不同界面上的作用、近期该领域的研究方向等方面进行综述，最后总结了为什么金属氢氧化物及其异质结构是高效碱性HER的必然选择。

附：英文原文

Title: Strategies and Perspectives to Catch the Missing Pieces in Energy‐Efficient Hydrogen Evolution Reaction in Alkaline Media

Author: Matthias Driess, Sengeni Anantharaj, Suguru Noda, Vasanth Rajendhiran Jothi, SungChul Yi, Prashanth W. Menezes

Issue&Volume: 07 January 2021

Abstract: Transition metal hydroxides (M–OH) and their heterostructures (X | M–OH, where X can be a metal, metal oxide, metal chalcogenide, metal phosphide, etc.) have recently emerged as highly active electrocatalysts for hydrogen evolution reaction (HER) of alkaline water electrolysis. Lattice hydroxide anions in metal hydroxides are primarily responsible for observing such an enhanced HER activity in alkali that facilitate water dissociation and assist the first step, the hydrogen adsorption. Unfortunately, their poor electronic conductivity had been an issue of concern that significantly lowered its activity. Interesting advancements were made when heterostructured hydroxide materials with a metallic and or a semiconducting phase were found to overcome this pitfall. However, in the midst of recently evolving metal chalcogenide and phosphide based HER catalysts, significant developments made in the field of metal hydroxides and their heterostructures catalysed alkaline HER and their superiority have unfortunately been given negligible attention. This review, unlike others, begins with the question why alkaline HER is difficult and will take the reader through evaluation perspectives, trends in metals hydroxides and their heterostructures catalysed HER, an understanding how alkaline HER works on different interfaces, what must be the research directions of this field in near future, and eventually summarizes why metal hydroxides and their heterostructures are inevitable for energy‐efficient alkaline HER.

DOI: 10.1002/anie.202015738

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202015738