Department of Chemistry, Material Science Lab, Annamalai University, Annamalainagar, Tamilnadu 608002, India.
Phys Chem Chem Phys. 2023 Mar 29;25(13):8992-9019. doi: 10.1039/d2cp05522h.
Water electrolysis plays an interesting role toward hydrogen generation for overcoming global environmental crisis and solving the energy storage problem. However, there is still a deficiency of efficient electrocatalysts to overcome sluggish kinetics for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Great efforts have been employed to produce potential catalysts with low overpotential, rapid kinetics, and excellent stability for HER and OER. At present, hydrogen economy is driven by electrocatalysts with excellent characteristics; thus, systematic design strategy has become the driving force to exploit earth-abundant transition metal-based electrocatalysts toward H economy. In this review, the recent progress on newer materials including metals, alloys, and transition metal oxides (manganese oxides, cobalt oxides, nickel oxides, PBA-derived metal oxides, and metal complexes) as photocatalysts/electrocatalysts has been overviewed together with some methodologies for efficient water splitting. Metal-organic framework (MOF)-based electrocatalysts have been highly exploited owing to their interesting functionalities. The photovoltaic-electrocatalytic (PV-EC) process focused on harvesting high solar-to-hydrogen efficiency (STH) among various solar energy conversion as well as storage systems. Electrocatalysts/photocatalysts with high efficiency have become an urgent need for overall water splitting. Also, cutting-edge achievements in the fabrication of electrocatalysts along with theoretical consideration have been discussed.
水分解在为克服全球环境危机和解决能源存储问题而产生氢气方面发挥了有趣的作用。然而，仍然缺乏高效的电催化剂来克服氢进化反应（HER）和氧进化反应（OER）的缓慢动力学。人们已经付出了巨大的努力来生产具有低过电势、快速动力学和优异的 HER 和 OER 稳定性的潜在催化剂。目前，由具有优异特性的电催化剂驱动的氢气经济；因此，系统设计策略已成为开发基于丰富过渡金属的电催化剂以实现 H 经济的驱动力。在这篇综述中，概述了包括金属、合金和过渡金属氧化物（锰氧化物、钴氧化物、镍氧化物、PBA 衍生的金属氧化物和金属配合物）在内的新材料以及一些高效水分解方法的最新进展。由于其有趣的功能，金属有机骨架（MOF）基电催化剂得到了高度开发。光电压电化学（PV-EC）过程侧重于在各种太阳能转换和存储系统中收集高太阳能到氢气效率（STH）。对于整体水分解，高效的电催化剂/光催化剂已成为当务之急。此外，还讨论了电催化剂制备方面的最新进展和理论考虑。
