The Hydrogen Evolution Reaction on the Hydrogen Storage Alloy Electrode

Authors

Shi-gang LU, Department of Physical Cheistry, University of Science and Thechology Beijing, Beijing 100083
Qun LI, Department of Physical Cheistry, University of Science and Thechology Beijing, Beijing 100083
Qing-guo LIU, Department of Physical Cheistry, University of Science and Thechology Beijing, Beijing 100083
Chun LU, Department of Physical Cheistry, University of Science and Thechology Beijing, Beijing 100083
Bing DANG, Department of Physical Cheistry, University of Science and Thechology Beijing, Beijing 100083
Han-xi YANG, Department of Physical Cheistry, University of Science and Thechology Beijing, Beijing 100083

Corresponding Author

Shi-gang LU

Abstract

The hydrogen evolution reaction was studied in 1 mol/L KOH solution on the hydrogen storage alloy Mm(NiCoMnAl)₅ electrode using open circuit potential decay and ac impedance technique. The reaction was found to proceed by the Volmer(discharge)-Tafel(recombination)mechanism. The measured overpotential η can be subdivided into two components η 1 and η 2 corresponding to the elementary Volmer and Tafel reaction. The Faradaic impedance was analyzed and characterized by the Volmer reaction. Then the exchange current density was evaluated . It was founded that the activity of hydrogen storage alloy electrode for the hydrogen evolution reaction was similar to that of Ni electrode.

Keywords

Hydrgenstorage alloy electrode, Hydrogen evolution reaction, Overpotential, Faradaic impedance

DOI Link

https://doi.org/10.61558/2993-074X.2699

Publication Date

1998-08-28

Online Available Date

1998-08-28

Revised Date

1998-01-16

Received Date

1997-09-15

Recommended Citation

Shi-gang LU, Qun LI, Qing-guo LIU, Chun LU, Bing DANG, Han-xi YANG. The Hydrogen Evolution Reaction on the Hydrogen Storage Alloy Electrode[J]. Journal of Electrochemistry, 1998 , 4(3): 265-272.
DOI: 10.61558/2993-074X.2699
Available at: https://jelectrochem.xmu.edu.cn/journal/vol4/iss3/5