Rational design of metal oxide catalysts for electrocatalytic water splitting.
Rational design of metal oxide catalysts for electrocatalytic water splitting.
复制标题
电催化水分解金属氧化物催化剂的合理设计。
DOI：
10.1039/d1nr06285a
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发表时间：
2021
期刊：
影响因子：
6.7
通讯作者：
Huijun Zhao
中科院分区：
文献类型：
--
作者：
Yiming Xu;Kaicai Fan;Yu Zou;H. Fu;Mengyang Dong;Yuhai Dou;Yun Wang;Shan Chen;H. Yin;M. Al‐Mamun;Porun Liu;Huijun Zhao
电催化能量在电和化学键合能之间的转换是通过在电极-电解质界面具有多个电荷转移步骤的氧化还原反应来实现的。电极材料的表面原子结构，如果适当地设计，将提供能量上可承受的途径，其具有单独的反应中间体，其不仅降低热力学能垒，而且允许总氧化还原反应的可接受的快速动力学速率。过渡金属氧化物作为一类最丰富、最稳定的存在形式，对多种重要的化学反应表现出良好的电催化活性。在这篇专题综述中，我们试图讨论可能的途径来构建这类重要的材料的电催化活性表面的两个基本的化学反应水裂解。介绍了外加电位下电催化剂表面的电化学水分解过程，讨论了基本的电荷转移过程及其机理。由于通常认为的活性位点是依赖于化学反应的，我们提供了一个总体概述的可能的方法来构建或创建电催化活性位点的背景下，表面原子结构工程。综述最后总结了电催化的挑战和机遇，以及如何解决这些问题以释放金属氧化物材料的电催化潜力。
Electrocatalytic energy conversion between electricity and chemical bonding energy is realized through redox reactions with multiple charge transfer steps at the electrode-electrolyte interface. The surface atomic structure of the electrode materials, if appropriately designed, will provide an energetically affordable pathway with individual reaction intermediates that not only reduce the thermodynamic energy barrier but also allow an acceptably fast kinetic rate of the overall redox reaction. As one of the most abundant and stable forms, oxides of transitional metals demonstrated promising electrocatalytic activities towards multiple important chemical reactions. In this topical review, we attempt to discuss the possible avenues to construct the electrocatalytic active surface for this important class of materials for two essential chemical reactions for water splitting. A general introduction of the electrochemical water splitting process on the electrocatalyst surface with applied potential will be provided, followed by a discussion on the fundamental charge transfers and the mechanism. As the generally perceived active sites are chemical reaction dependent, we offer a general overview of the possible approaches to construct or create electrocatalytically active sites in the context of surface atomic structure engineering. The review concludes with perspectives that summarize challenges and opportunities in electrocatalysis and how these can be addressed to unlock the electrocatalytic potentials of the metal oxide materials.