Chinese Journal of Applied Chemistry ›› 2022, Vol. 39 ›› Issue (4): 616-628.DOI: 10.19894/j.issn.1000-0518.210336

• Review • Previous Articles     Next Articles

Research Progress of Mechanism of Acidic Oxygen Evolution Reaction and Development of Ir⁃based Catalysts

Xue WANG1,2, Yi-Bo WANG1,2, Xian WANG1,2, Jian-Bing ZHU1,2(), Jun-Jie GE1,2(), Chang-Peng LIU1,2(), Wei XING1,2   

  1. 1.Laboratory of Advanced Power Sources,Changchun Insititute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
    2.University of Science and Technology of China,Hefei 230026,China
  • Received:2021-07-09 Accepted:2021-09-25 Published:2022-04-01 Online:2022-04-19
  • Contact: Jian-Bing ZHU,Jun-Jie GE,Chang-Peng LIU
  • Supported by:
    the National Key R&D Program of China(2020YFB1506802);the Strategic Priority Research Program of CAS(XDA21090400);Jilin Province Science and Technology Development Program(20190201300JC)

Abstract:

The rapid development of sustainable energy has made green and clean hydrogen energy a hot spot. Proton exchange membrane (PEM) water electrolysis is a promising technology that can efficiently produce high-purity hydrogen. IrO2, the-state-of-the-art electrocatalyst for the oxygen evolution reaction (OER), can not only overcome the high corrosion conditions in acidic media, but also exhibit superior catalytic performance. However, due to the scarcity and high price of Ir, it is crucial to develop low-Ir catalysts and improve the OER activity. The study of its reaction mechanism is one of the current research hotspots, and it is also the key to the design of excellent OER catalysts. The conventional adsorbate evolution mechanism (AEM) and lattice oxygen evolution reaction mechanism (LOER) are introduced. Subsequently, based on the two proposed mechanisms, the basic design principles of OER catalysts are introduced, namely, regulating the electronic structure of Ir-based catalysts, improving the adsorption energy of reaction intermediate species on the catalytic active sites, thereby increasing the catalytic activity of OER. It also briefly summarizes the recent research progress of OER catalysts from the three aspects of catalyst structure design, morphology control, and support materials, and the recent research progress of OER catalysts is briefly summarized. Moreover, several unresolved problems are put forward on the basis of the existing OER catalysts, which points out the direction for further research.

Key words: Proton exchange membrane water electrolysis technology, Oxygen evolution reaction, Ir-based catalysts, Adsorbate evolution mechanism, Lattice oxygen evolution mechanism

CLC Number: