Corrosion Behavior of Mg_1.85Mm_0.15Ni Hydrogen Storage Alloy Modified by Electroless Cu in CH₃OH·H₂O Solutions

Authors

Hua-bin YANG, College of Chemistry Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, ChinaFollow
Hai-chang ZHANG, College of Chemistry Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China
Hua SUN, College of Chemistry Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China
Xiao-dan 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 the Mg_1.85Mm_0.15Ni (Mm:Ce-rich mischmetal) alloy modified by electroless Cu coating in different CH₃OH-H₂O solutions has been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy. These results showed that the corrosion behavior was improved after electroless Cu. The potentiodynamic polarization and electrochemical impedance spectroscopy results showed that the alloy electrode had more promising anti-corrosion behavior after coated in a 40%CH₃OH-H₂O solution. The values of corrosion current density and electrode reaction resistance were 5.6 mA·cm^-2 (11.7 mA·cm^-2 for uncoated alloy electrode) and 22.25 Ω·cm² (1.99 Ω·cm² for the uncoated alloy electrode), respectively

Keywords

Mg-based hydrogen storage alloy, Ce-rich mischmetal, Corrosin on resistance behavior, Electroless Cu coating

DOI Link

https://doi.org/10.61558/2993-074X.1505

Publication Date

2003-05-28

Online Available Date

2003-05-28

Revised Date

2002-10-28

Received Date

2002-08-16

Recommended Citation

Hua-bin YANG, Hai-chang ZHANG, Hua SUN, Xiao-dan WANG, Zuo-xiang ZHOU. Corrosion Behavior of Mg_1.85Mm_0.15Ni Hydrogen Storage Alloy Modified by Electroless Cu in CH₃OH·H₂O Solutions[J]. Journal of Electrochemistry, 2003 , 9(2): 196-202.
DOI: 10.61558/2993-074X.1505
Available at: https://jelectrochem.xmu.edu.cn/journal/vol9/iss2/12