质子交换膜燃料电池中Pt/C及Pt合金/C催化剂的衰退机制研究综述

doi:10.11896/j.issn.1005-023X.2017.017.004

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Abstract Cost and durability of PEM fuel cells are still two bottlenecks that impede the commercialization of PEM fuel cells. Initially, the degradation of the Pt/C catalyst for the proton exchange membrane fuel cell cathode under practical working conditions is reviewed and possible degradation mechanisms are given. The results indicate that the Pt/C catalyst is not stable under practical working conditions, especially in automotive applications, and cannot meet the practical requirements of cathode materials for PEM fuel cells. Pt alloy catalysts are expected to solve the problems of cost and durability due to their excellent oxygen reduction catalytic properties and relatively good durability. Therefore, they have been paid more and more attention and applied in PEM fuel cells. However, the durability of the alloy catalyst is still a difficult problem. At the end of this paper, the possible mechanism of the Pt_xCo_y alloy catalysts degradation is reviewed and it is found that Pt monolayer structure and Pt skeleton structure can improve the durability of Pt alloy catalysts, which has a directive significance for the synthesis and design of catalysts.

Key words： PEM fuel cells Pt/C catalyst Pt-alloy catalyst durability Pt monolayer structure Pt skeleton structure

Published: 07 May 2018

CLC number:

TM911.46

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	Articles by authors
	CAI Chao
	CHEN Yanan
	FU Kailin
	PAN Mu

Cite this article:

CAI Chao,CHEN Yanan,FU Kailin, et al. Review on the Decay Mechanism of Pt/C and Pt-alloy Catalysts in PEM Fuel Cells[J]. Materials Reports, 2017, 31(17): 20-26.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.017.004 OR http://www.mater-rep.com/EN/Y2017/V31/I17/20

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