In the process of producing hydrogen by water electrolysis with Solid Polymer Electrolyte(SPE), anodic oxygen evolution reaction(OER) is the rate-determining step of the whole electrochemical reaction. The progress of the state-of-the-art for the SPE technology in terms of oxygen evolution reaction(OER) mechanism, catalyst materials and its synthesis method are recommended. It is pointed out that new detection methods can analyze OER reaction mechanism and study the intermediate activity products at atomic level. Optimization of the traditional synthesis method and the development of the new method can improve the catalysts performance. In addition, introducing high stability, low cost and high activity carrier material can also improve the performance of catalyst and reduce its cost accordingly. It is hoped that our paper will give a clear direction for the future research of anode catalysts and promote the commercialization of the SPE electrolysis.
Contents
1 Introduction
2 SPE catalyst
2.1 OER mechanism
2.2 Catalyst materials
2.3 Preparation methods
3 Conclusion and outlook