Chen Tse-Wei, Chen Shen-Ming, Anushya Ganesan, Kannan Ramanujam, Veerakumar Pitchaimani, Alam Mohammed Mujahid, Alargarsamy Saranvignesh, Ramachandran Rasu
Department of Materials, Imperial College London, London SW7 2AZ, UK.
Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan.
Nanomaterials (Basel). 2023 Jul 5;13(13):2012. doi: 10.3390/nano13132012.
Water electrolysis is an important alternative technology for large-scale hydrogen production to facilitate the development of green energy technology. As such, many efforts have been devoted over the past three decades to producing novel electrocatalysis with strong electrochemical (EC) performance using inexpensive electrocatalysts. Transition metal oxyhydroxide (OxH)-based electrocatalysts have received substantial interest, and prominent results have been achieved for the hydrogen evolution reaction (HER) under alkaline conditions. Herein, the extensive research focusing on the discussion of OxH-based electrocatalysts is comprehensively highlighted. The general forms of the water-splitting mechanism are described to provide a profound understanding of the mechanism, and their scaling relation activities for OxH electrode materials are given. This paper summarizes the current developments on the EC performance of transition metal OxHs, rare metal OxHs, polymers, and MXene-supported OxH-based electrocatalysts. Additionally, an outline of the suggested HER, OER, and water-splitting processes on transition metal OxH-based electrocatalysts, their primary applications, existing problems, and their EC performance prospects are discussed. Furthermore, this review article discusses the production of energy sources from the proton and electron transfer processes. The highlighted electrocatalysts have received substantial interest to boost the synergetic electrochemical effects to improve the economy of the use of hydrogen, which is one of best ways to fulfill the global energy requirements and address environmental crises. This article also provides useful information regarding the development of OxH electrodes with a hierarchical nanostructure for the water-splitting reaction. Finally, the challenges with the reaction and perspectives for the future development of OxH are elaborated.
水电解是大规模制氢的一项重要替代技术，有助于绿色能源技术的发展。因此，在过去三十年里，人们付出了诸多努力，致力于使用廉价的电催化剂生产具有强大电化学（EC）性能的新型电催化剂。基于过渡金属羟基氧化物（OxH）的电催化剂受到了广泛关注，并且在碱性条件下的析氢反应（HER）方面取得了显著成果。在此，全面重点介绍了围绕基于OxH的电催化剂展开的广泛研究。描述了水分解机制的一般形式，以深入理解该机制，并给出了它们对OxH电极材料的标度关系活性。本文总结了过渡金属OxH、稀有金属OxH、聚合物以及MXene负载的基于OxH的电催化剂在EC性能方面的当前进展。此外，还讨论了基于过渡金属OxH的电催化剂上建议的HER、OER和水分解过程的概述、它们的主要应用、存在的问题以及它们的EC性能前景。此外，这篇综述文章还讨论了质子和电子转移过程中的能源生产。这些备受关注的电催化剂能够增强协同电化学效应，从而提高氢气使用的经济性，这是满足全球能源需求和应对环境危机的最佳途径之一。本文还提供了有关用于水分解反应的具有分级纳米结构的OxH电极开发的有用信息。最后，阐述了该反应面临的挑战以及OxH未来发展的前景。
