| Cu~(2+)对质子交换膜燃料电池氧电极性能的影响 |
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| 引用本文： | 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,2009,15(2):212. |
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| 作者姓名： | 揭晓 侯俊波 邵志刚 衣宝廉 |
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| 作者单位： | 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; |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 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.
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| 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 |
| 收稿时间： | 2009-05-28 |
Effect of Impurity Cu~(2+) on Oxygen Electrode in PEMFC |
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| JIE Xiao,HOU Jun-bo,SHAO Zhi-gang,YI Bao-lian.Effect of Impurity Cu~(2+) on Oxygen Electrode in PEMFC[J].Electrochemistry,2009,15(2):212. |
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| Authors: | JIE Xiao HOU Jun-bo SHAO Zhi-gang YI Bao-lian |
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| Institution: | 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 |
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| 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 react... |
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| Keywords: | proton exchange membrane fuel cell cation contaminants rotating disk electrode oxygen reduction reaction |
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