The development of highly efficient oxygen reduction reaction (ORR) catalysts is the key to the commercialization of fuel cells, where the sluggish ORR reaction rate needs to be overcome by adjusting the intermediates adsorption energies on the catalytic surfaces. To-date, platinum (Pt)-based materials are the-state-of-the-art catalysts in terms of both activity and stability in ORR, making them the preferred choice for commercial applications. However, the high cost of Pt-based catalysts limits their widespread use, leading to massive effects paid in reducing Pt loading, improving catalyst activity and stability. This article illustrates the challenges in the ORR reaction and introduces the recent research progresses in Pt-based oxygen reduction catalysts including the ORR mechanism, core-shell structures, one-dimensional nanostructure, and other representative works of Pt-based catalysts. Some perspectives in the future development trend of Pt-based catalysts are given at the end of the paper, hoping to provide readers with some ideological inspiration.
Tuo ZHAO, Er-gui LUO, Xian WANG, Jun-jie GE, Chang-peng LIU, Wei XING.
Challenges in the Activity and Stability of Pt-Based Catalysts toward ORR[J]. Journal of Electrochemistry,
2020
,
26(1): 84-95.
DOI: 10.13208/j.electrochem.181205
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol26/iss1/14