Electrooxidation of Formic Acid on Pd-Ni Alloy Film Electrode-The Effect of Dealloying

Authors

Chao WANG, Shanghai Key Laboratory for Molecular Catalysis and Innovative Materials,Department of Chemistry,Fudan University,Shanghai 200433,China;
Fei-fei SHI, Shanghai Key Laboratory for Molecular Catalysis and Innovative Materials,Department of Chemistry,Fudan University,Shanghai 200433,China;
Jin-yi WANG, Shanghai Key Laboratory for Molecular Catalysis and Innovative Materials,Department of Chemistry,Fudan University,Shanghai 200433,China;
Han-xuan ZHANG, Shanghai Key Laboratory for Molecular Catalysis and Innovative Materials,Department of Chemistry,Fudan University,Shanghai 200433,China;
Wen-bin CAI, Shanghai Key Laboratory for Molecular Catalysis and Innovative Materials,Department of Chemistry,Fudan University,Shanghai 200433,China;

Corresponding Author

Wen-bin CAI(wbcai@fudan.edu.cn)

Abstract

A Pd-Ni alloy film was electrodeposited on Au disc electrode at a constant potential from a weakly basic bath containing PdCl2,NiSO4 and ethylenediamine.The as-deposited film was then subjected to potential cycling in a perchloric acid solution for surface dealloying treatment.The dealloyed Pd-Ni film electrode was examined for the electrocatalytic oxidation of formic acid,and compared with the as-deposited one as well as a Pd film electrode.The FE-SEM and electrochemical measurements on the Pd-Ni films revealed that the dealloying treatment caused a surface roughening and an increase in specific surface reaction area.The ICP-AES and XPS analyses demonstrated that the preferential dissolution of Ni in the dealloying treatment led to a Pd-rich outer layer in the resultant Pd-Ni film.The electrocatalysis measurements indicated that the dealloyed Pd-Ni electrode is superior to the as-deposited Pd-Ni as well as the Pd electrode in terms of the electro-oxidation of formic acid.

Keywords

Pd-Ni alloy, dealloyment, formic acid, electrocatalysis

DOI Link

https://doi.org/10.61558/2993-074X.2011

Publication Date

2009-11-28

Online Available Date

2009-11-28

Revised Date

2009-11-28

Received Date

2009-11-28

Recommended Citation

Chao WANG, Fei-fei SHI, Jin-yi WANG, Han-xuan ZHANG, Wen-bin CAI. Electrooxidation of Formic Acid on Pd-Ni Alloy Film Electrode-The Effect of Dealloying[J]. Journal of Electrochemistry, 2009 , 15(4): 377-381.
DOI: 10.61558/2993-074X.2011
Available at: https://jelectrochem.xmu.edu.cn/journal/vol15/iss4/3