Doping regulation in transition metal compounds for electrocatalysis,Chemical Society Reviews

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Doping regulation in transition metal compounds for electrocatalysis
Chemical Society Reviews ( IF 40.4 ) Pub Date : 2021-07-26 , DOI: 10.1039/d1cs00330e
An Zhang ₁ , Yongxiang Liang , Han Zhang , Zhigang Geng , Jie Zeng

Affiliation

In electrocatalysis, doping regulation has been considered as an effective method to modulate the active sites of catalysts, providing a powerful means for creating a large variety of highly efficient catalysts for various reactions. Of particular interest, there has been growing research concerning the doping of two-dimensional transition-metal compounds (TMCs) to optimize their electrocatalytic performance. Despite the previous achievements, mechanistic insights of doping regulation in TMCs for electrocatalysis are still lacking. Herein, we provide a systematic overview of doping regulation in TMCs in terms of background, preparation, impacts on physicochemical properties, and typical applications including the hydrogen evolution reaction, oxygen evolution reaction, oxygen reduction reaction, CO₂ reduction reaction, and N₂ reduction reaction. Notably, we bridge the understanding between the doping regulation of catalysts and their catalytic activities via focusing on the physicochemical properties of catalysts from the aspects of vacancy concentrations, phase transformation, surface wettability, electrical conductivity, electronic band structure, local charge distribution, tunable adsorption strength, and multiple adsorption configurations. We also discuss the existing challenges and future perspectives in this promising field.

中文翻译：

电催化过渡金属化合物的掺杂调节

在电催化中，掺杂调节被认为是调节催化剂活性位点的有效方法，为为各种反应创造多种高效催化剂提供了强有力的手段。特别令人感兴趣的是，关于二维过渡金属化合物 (TMC) 掺杂以优化其电催化性能的研究越来越多。尽管取得了先前的成就，但仍缺乏对用于电催化的 TMC 中掺杂调节的机制见解。在此，我们从背景、制备、对理化性质的影响以及典型应用（包括析氢反应、析氧反应、氧还原反应、CO _{2 ）等}方面系统地概述了 TMC 中的掺杂调控还原反应和N ₂还原反应。值得注意的是，我们通过从空位浓度、相变、表面润湿性、电导率、电子能带结构、局部电荷分布、可调吸附等方面关注催化剂的理化性质，在催化剂的掺杂调节及其催化活性之间架起了桥梁。强度和多种吸附配置。我们还讨论了这个有前途的领域中现有的挑战和未来的前景。

更新日期：2021-07-26

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