The Influence of Surface Diffusion of Adsorbed Intermediate on Hydrogen Evolution Reaction at Pt/Nafion Composite Electrodes

Authors

Wei-yi TU, Dept.of Chem.,Dept.of Mat.Sci.,Inst.of Phy . Chem., State Key Lab.For Phy.Chem.of Solid Sur.,Xiamen Univ.,Xiamen 361005,China;
Lei SU, Dept. of Chem., Wuhan Univ., Wuhan 430072, China;
Wen-jun LIU, Dept. of Chem., Wuhan Univ., Wuhan 430072, China;
Bing-liang WU, Dept. of Chem., Wuhan Univ., Wuhan 430072, China;

Corresponding Author

Bing_liang WU

Abstract

The decrease of over_potential of hydrogen evolution reaction at Pt black powder/Nafion microelectrode, comparing that of the Pt microdisk/Nafion electrode, was evident from the polarization curves of the Pt microdisk/Nafion electrode, platinized Pt micrdisk/Nafion electrode and Pt black powder/Nafion microelectrode. It is also evidenced by a plane Pt electrode with an additional free Pt surface. The surface diffusion and the surface recombination reaction of the adsorbed intermediate at the free surface of the Pt particles were supposed. It is an additional reaction path that induced the decrease of the concentration of the adsorbed intermediate. Thereby, the over_potential decreased.

Keywords

Surface diffusion, Adsorbed intermediate, Hydrogen evolution reaction, Over_potential

DOI Link

https://doi.org/10.61558/2993-074X.1379

Publication Date

2000-05-28

Online Available Date

2000-05-28

Revised Date

2000-05-28

Received Date

2000-05-28

Recommended Citation

Wei-yi TU, Lei SU, Wen-jun LIU, Bing-liang WU. The Influence of Surface Diffusion of Adsorbed Intermediate on Hydrogen Evolution Reaction at Pt/Nafion Composite Electrodes[J]. Journal of Electrochemistry, 2000 , 6(2): 181-186.
DOI: 10.61558/2993-074X.1379
Available at: https://jelectrochem.xmu.edu.cn/journal/vol6/iss2/6

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