Corrosion Behavior of Mg_2-xLa_xNi and Mg_2-xCe_xNi Hydrogen Storage Alloy

Authors

Hai-chang ZHANG, College of Chemistry Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China
Hua-bin YANG, College of Chemistry Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, ChinaFollow
Jun-hong WANG, College of Chemistry Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China
Zuo-xiang ZHOU, College of Chemistry Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China

Corresponding Author

Hua-bin YANG(hb_yang@nankai.edu.cn)

Abstract

The corrosion behavior of Mg-base hydrogen storage alloys has been investigated by potentiodynamic polarization and EIS. The results showed that the corrosion current density (i_corr) and the electrochemical polarized resistance of Mg_2-xCe_xNi alloys decreased with x increase, while i_corr of Mg_2-xLa_xNi alloys increased and the electrochemical polarized resistance of Mg_2-xLa_xNi alloys increased first, then decreased with x increase. SEM results showed that the surface of Mg_1.85Ce_0.15Ni alloy was relatively even while the surface of Mg_2-xLa_xNi alloy had remarkedly cracks. The different behavior between Ce and La may be relevant to the structure of Ce, La oxides.

Keywords

Mg-based hydrogen storage alloy, Potentiodynamic polarization, EIS

DOI Link

https://doi.org/10.61558/2993-074X.1606

Publication Date

2005-02-28

Online Available Date

2005-02-28

Revised Date

2004-04-05

Received Date

2004-01-14

Recommended Citation

Hai-chang ZHANG, Hua-bin YANG, Jun-hong WANG, Zuo-xiang ZHOU. Corrosion Behavior of Mg_2-xLa_xNi and Mg_2-xCe_xNi Hydrogen Storage Alloy[J]. Journal of Electrochemistry, 2005 , 11(1): 12-15.
DOI: 10.61558/2993-074X.1606
Available at: https://jelectrochem.xmu.edu.cn/journal/vol11/iss1/3