Recent progress of hollow structure platform in assisting oxygen evolution reaction

Hydrogen production by water electrolysis has received extensive attention, mainly due to the fact that the process does not emit carbon dioxide and other pollutants. Whereas, the kinetic process of the anodic oxygen evolution reaction (OER) is very sluggish due to the four-electron proton coupling mechanism, which seriously affects the hydrogen production efficiency. The development and use of high-performance oxygen evolution electrocatalysts is an important way to improve the kinetics of OER processes. As an electrocatalyst platform, the hollow structure exhibits unique advantages in assisting the OER process. This review summarizes and discusses the advantages and disadvantages and improvement strategies of hollow structures, construction strategies, types of hollow structures and synthetic methods as well as unique advantages in facilitating the OER process. We focus on the role of hollow materials with different compositions and morphologies in promoting the OER reaction. In addition, this review also discusses the problems and challenges of hollow structure fabrics, and discusses the corresponding solution strategies and future development directions.