Cu~(2+)对质子交换膜燃料电池氧电极性能的影响

doi:10.61558/2993-074X.1982

电化学（中英文） ›› 2009, Vol. 15 ›› Issue (2): 212-215. doi: 10.61558/2993-074X.1982

Cu~(2+)对质子交换膜燃料电池氧电极性能的影响

揭晓;侯俊波;邵志刚;衣宝廉;

中国科学院大连化学物理研究所燃料电池系统与工程研究组;中国科学院研究生院;

收稿日期:2009-05-28 修回日期:2009-05-28 出版日期:2009-05-28 发布日期:2009-05-28

Effect of Impurity Cu~(2+) on Oxygen Electrode in PEMFC

JIE Xiao1,2,HOU Jun-bo1,2,SHAO Zhi-gang1 ,YI Bao-lian1

(1.Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Fuel Cell System and EngineeringLaboratory,Dalian 116023,Liaoning,China;2.Graduate School of the Chinese Academy of Sciences,Beijing 100039,China

Received:2009-05-28 Revised:2009-05-28 Published:2009-05-28 Online:2009-05-28

摘要/Abstract

摘要： 以旋转圆盘电极模拟PEMFC阴极,计时库仑、循环伏安、线性扫描等电化学方法研究Cu2+电解液对碳载铂催化剂电化学活性和氧还原性能的影响.结果表明,在恒电位0.49 V下,Pt/C催化剂活性比表面(ECA)明显减小,此际基底可能发生Cu欠电位沉积,从而掩盖催化剂的活性比表面;数据拟合指明Cu欠电位沉积占据催化剂表面部分氧原子吸附点位,使该点位桥式吸附的氧原子转变为顶式吸附氧原子.

关键词: 质子交换, 膜燃料电池, 离子污染, 旋转圆盘电极, 氧还原

Abstract: Rotating disk electrode was adopted in this paper to simulate the cathode in PEMFC.In the Cu2+ electrolyte,the influence of impurity Cu2+ on Carbon-Supported Pt Catalysts was investigated by using electrochemical measurements such as chronocoulometry,cyclic voltammetry and linear sweep.Experimental results showed that,after constant voltage at 0.49 V,the ECA of Pt/C decreased dramatically,it's perhaps under potential deposition of Cu might occur on the substrate.Meanwhile the change of ORR Tafel scope reaction is very large.It might be because oxygen adsorption sites are occupied by Cu atoms after they under potential deposit on surface of Pt/C catalyst,and the adsorption of oxygen on catalyst surface change from bridge type to top type.

Key words: proton exchange membrane fuel cell, cation contaminants, rotating disk electrode, oxygen reduction reaction

中图分类号:

TM911.4

揭晓, 侯俊波, 邵志刚, 衣宝廉, . Cu~(2+)对质子交换膜燃料电池氧电极性能的影响[J]. 电化学（中英文）, 2009, 15(2): 212-215.

JIE Xiao, HOU Jun-bo, SHAO Zhi-gang , YI Bao-lian . Effect of Impurity Cu~(2+) on Oxygen Electrode in PEMFC[J]. Journal of Electrochemistry, 2009, 15(2): 212-215.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.61558/2993-074X.1982

https://electrochem.xmu.edu.cn/CN/Y2009/V15/I2/212

参考文献

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Cu~(2+)对质子交换膜燃料电池氧电极性能的影响

Effect of Impurity Cu~(2+) on Oxygen Electrode in PEMFC

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