Platinum Alloy Catalysts for Oxygen Reduction Reaction: Advances, Challenges and Perspectives
Platinum Alloy Catalysts for Oxygen Reduction Reaction: Advances, Challenges and Perspectives
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DOI：
10.1002/cnma.201900319
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发表时间：
2019-08
期刊：
影响因子：
3.8
通讯作者：
Dezhen Wu;Xiaochen Shen;Yanbo Pan;Libo Yao;Zhenmeng Peng
中科院分区：
文献类型：
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作者：
Dezhen Wu;Xiaochen Shen;Yanbo Pan;Libo Yao;Zhenmeng Peng
聚合物电解质膜燃料电池（pemfc）面临的挑战之一是开发具有成本效益、活性和稳定性的氧还原反应（ORR）催化剂。铂合金基催化剂材料因其优异的活性性能而受到广泛关注和深入研究，其中一些催化剂的ORR活性已经超过了2020年美国能源部的目标。同时，这些Pt合金的电化学稳定性仍然是一个有待克服的挑战。本文首先介绍了对ORR途径和机理的重要认识，然后总结了近年来Pt合金催化剂材料的研究进展。讨论了目前Pt合金催化剂研究中存在的障碍，特别强调了稳定性问题，并建立了描述其稳定性的理论模型。本文对该领域未来的研究方向进行了展望。
One of the challenges in polymer electrolyte membrane fuel cells (PEMFCs) is developing cost‐effective, active and stable catalyst for oxygen reduction reaction (ORR). Platinum alloy‐based catalyst materials have drawn great attention and been intensively investigated for the excellent activity property, with some of them already exceeding 2020 DOE target for the ORR activity. In the meantime, the electrochemical stability of these Pt alloys remains a challenge to be overcome. This review first highlights important understandings of ORR pathways and mechanisms and then proceeds to summarize recent research progresses on development of Pt alloy catalyst materials. Current obstacles in Pt alloy catalyst research are discussed, with the stability issue being specifically emphasized and a theoretical model being developed for depicting the stability property. This review also provides perspectives of future research directions in this field.