Acta Phys. -Chim. Sin. ›› 2017, Vol. 33 ›› Issue (1): 9-17.doi: 10.3866/PKU.WHXB201609202

• FEATURE ARTICLE • Previous Articles     Next Articles

Core-Shell Electrocatalysts for Oxygen Reduction Reaction

Qiao-Wan CHANG,Fei XIAO,Yuan XU,Min-Hua SHAO*   

  • Received:2016-08-02 Published:2016-12-29
  • Contact: Min-Hua SHAO
  • Supported by:
    The project was supported by the Research Grant Council of the Hong Kong Special Administrative Region, China(26206115)


The high cost of platinum in catalyst layers hinders the commercialization of proton exchange membrane fuel cells. This Account reviews recent progress on core-shell nanostructures for oxygen reduction reaction (ORR) in acidic media, which is the cathodic reaction in fuel cells. The synthesis, characterization and evaluation of different types of core-shell electrocatalysts are summarized. Various strategies to improve the performance of core-shell electrocatalysts, including dealloying, morphology control, and surface modification are presented. The issues of mass production and fuel cell performance of core-shell electrocatalysts are also discussed.

Key words: Core-shell structure, Proton exchange membrane fuel cell, Electrocatalysis, Platinum alloy, Palladium, Shape control