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

Authors

Xiao JIE, Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Fuel Cell System and EngineeringLaboratory,Dalian 116023,Liaoning,China;Graduate School of the Chinese Academy of Sciences,Beijing 100039,China;
Jun-bo HOU, Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Fuel Cell System and EngineeringLaboratory,Dalian 116023,Liaoning,China;Graduate School of the Chinese Academy of Sciences,Beijing 100039,China;
Zhi-gang SHAO, Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Fuel Cell System and EngineeringLaboratory,Dalian 116023,Liaoning,China;
Bao-lian YI, Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Fuel Cell System and EngineeringLaboratory,Dalian 116023,Liaoning,China;

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.

Keywords

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

DOI Link

https://doi.org/10.61558/2993-074X.1982

Publication Date

2009-05-28

Online Available Date

2009-05-28

Revised Date

2009-05-28

Received Date

2009-05-28

Recommended Citation

Xiao JIE, Jun-bo HOU, Zhi-gang SHAO, Bao-lian YI. Effect of Impurity Cu~(2+) on Oxygen Electrode in PEMFC[J]. Journal of Electrochemistry, 2009 , 15(2): 212-215.
DOI: 10.61558/2993-074X.1982
Available at: https://jelectrochem.xmu.edu.cn/journal/vol15/iss2/17