Recent advances in activity and durability enhancement of Pt/C catalytic cathode in PEMFC: Part II: Degradation mechanism and durability enhancement of carbon supported platinum catalyst
Recent advances in activity and durability enhancement of Pt/C catalytic cathode in PEMFC: Part II: Degradation mechanism and durability enhancement of carbon supported platinum catalyst
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DOI：
10.1016/j.jpowsour.2007.07.048
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发表时间：
2007-10
影响因子：
9.2
通讯作者：
Xingwen Yu;S. Ye
中科院分区：
文献类型：
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作者：
Xingwen Yu;S. Ye
近年来，聚合物电解质膜燃料电池（PEMFC）技术发展迅速，碳载催化剂的长期性能研究是PEMFC商业化的重要课题之一。PEMFC中的阴极催化剂层通常含有负载在高表面积碳上的铂族金属/合金纳米颗粒。碳载体腐蚀和Pt溶解/聚集被认为是Pt/C催化剂降解的主要贡献者。如果铂颗粒不能在燃料电池的寿命期间保持其结构，则催化剂层的形态从初始状态的变化将导致电化学活性的损失。综述了近年来质子交换膜燃料电池（PEMFC）中Pt/C阴极催化剂稳定性的研究进展，重点介绍了通过改善Pt-C相互作用提高催化剂耐久性的研究进展。展望了未来延长催化剂使用寿命的策略。
Polymer electrolyte membrane fuel cell (PEMFC) technology has advanced rapidly in recent years, with one of active area focused on improving the long-term performance of carbon supported catalysts, which has been recognized as one of the most important issues to be addressed for the commercialization of the PEMFCs. The cathode catalyst layer in PEMFCs typically contains platinum group metal/alloy nanoparticles supported on a high-surface-area carbon. Carbon support corrosion and Pt dissolution/aggregation are considered as the major contributors to the degradation of the Pt/C catalysts. If the platinum particles cannot maintain their structure over the lifetime of the fuel cell, change in the morphology of the catalyst layer from the initial state will result in a loss of electrochemical activity. This paper reviews the recent advances in the stability improvement of the Pt/C cathodic catalysts in PEMFC, especially focusing on the durability enhancement through the improved Pt–C interaction. Future promising strategies towards the extension of catalysts operation life are also prospected.