Wang Peican, Wang Baoguo
The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, No. 30 Shuang-Qing Road, Hai-Dian District, Beijing 100084, People's Republic of China.
ACS Appl Mater Interfaces. 2021 Dec 22;13(50):59593-59617. doi: 10.1021/acsami.1c17448. Epub 2021 Dec 8.
Electrochemical water splitting is regarded as the most attractive technique to store renewable electricity in the form of hydrogen fuel. However, the corresponding anodic oxygen evolution reaction (OER) and cathodic hydrogen evolution reaction (HER) remain challenging, which exhibit complex reactions and sluggish kinetic behaviors at the triple-phase interface. Material surface and interface engineering provide a feasible approach to improve catalytic activity. Besides, self-supported electrocatalysts have been proven to be highly efficient toward water splitting, because of the regulated catalyst/substrate interface. In this Review, the state-of-the-art achievements in self-supported electrocatalyst for HER/OER have demonstrated the feasibility of surface and interface engineering strategies to boost performance. The six key effective surface/interface engineering approaches for rational catalysts design are systematically reviewed, including defect engineering, morphology engineering, crystallographic tailoring, heterostructure design, catalyst/substrate interface engineering, and catalyst/electrolyte interface regulation. Finally, the challenges and opportunities on the valuable directions are proposed to inspire future investigation of highly active and durable HER/OER electrocatalysts.
电化学水分解被认为是将可再生电力以氢燃料形式储存的最具吸引力的技术。然而，相应的阳极析氧反应（OER）和阴极析氢反应（HER）仍然具有挑战性，它们在三相界面处表现出复杂的反应和缓慢的动力学行为。材料表面和界面工程提供了一种提高催化活性的可行方法。此外，自支撑电催化剂已被证明对水分解具有高效性，这得益于其调控的催化剂/基底界面。在本综述中，用于HER/OER的自支撑电催化剂的最新成果证明了表面和界面工程策略提高性能的可行性。系统地综述了用于合理设计催化剂的六种关键有效表面/界面工程方法，包括缺陷工程、形貌工程、晶体学剪裁、异质结构设计、催化剂/基底界面工程以及催化剂/电解质界面调控。最后，针对这些有价值的方向提出了挑战和机遇，以激发未来对高活性和耐用的HER/OER电催化剂的研究。
