CIESC Journal ›› 2020, Vol. 71 ›› Issue (10): 4409-4428.doi: 10.11949/0438-1157.20190615

• Reviews and monographs • Previous Articles     Next Articles

Advances in single-atom catalysts for oxygen electrodes

Yao WANG1,2(),Yiyun TANG1,3   

  1. 1.Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu 610207, Sichuan, China
    2.Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Chengdu 610207, Sichuan, China
    3.College of Materials Science and Engineering, Sichuan University, Chengdu 610207, Sichuan, China
  • Received:2020-05-29 Revised:2020-07-09 Online:2020-10-05 Published:2019-11-07
  • Contact: Yao WANG E-mail:wangyao516@scu.edu.cn

Abstract:

As the most promising energy conversion and storage devices, fuel cells and metal-air batteries are of great benefit in alleviating the energy and environmental problems. However, the sluggish oxygen electrode reactions, including oxygen reduction reaction (ORR) for fuel cell and ORR couple with oxygen evolution reaction (OER) for zinc-air batteries, seriously limit the efficient of both types of devices. In recent years, single-atoms catalysts (SACs) have been proposed to improve the kinetics of oxygen electrode reaction. Therefore, for these two types of oxygen electrode reactions, this review firstly summarized their possible mechanism. Then, the SACs were classified by the different metal elements for both ORR and OER. Thus, noble-metal-based and non-noble-metal-based catalysts have been summarized in these two reactions. At the same time, a summary of the dual-function catalyst and its application in zinc air batteries is also given. Finally, in view of the current problems and future development directions of SACs, suggestions are put forward, aiming to pave the way for the design and development of monoatomic oxygen electrode catalysts.

Key words: single-atom catalyst, oxygen reduction reaction, oxygen evolution reaction, bifunctional catalyst, fuel cells, zinc-air batteries

CLC Number: 

  • TQ 028.8
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