Mechanism of Self Discharge Performance Improvement in the Ni-MH Batteries with NaOH Electrolyte

Authors

Xiao-feng LI, Department of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,Henan,China;Follow
Tong-chi XIA, Department of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,Henan,China;
Hui-chao DONG, Department of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,Henan,China;
Yan-wei WEI, Department of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,Henan,China;

Corresponding Author

Xiao-feng LI(lixiaofeng@zzuli.edu.cn)

Abstract

The self-discharge performance and charge efficiency at 60 ℃ for Ni-MH battery can be markedly enhanced by using NaOH electrolyte instead of KOH electrolyte.Both the results of electrochemical impedance spectroscopy and cyclic voltammetry tests indicate that the separation of H₂ from the negative electrode may be partly blocked in the former because of the change of the adsorption/desorption behavior of H on the surface of the negative electrode,thus results in an improvement of self-discharge performance of the battery.

Keywords

Nickel-metal-hydride battery, Self-discharge, NaOH electrolyte, Electrochemical impedance spectroscopy, Cyclic voltammetry

DOI Link

https://doi.org/10.61558/2993-074X.1704

Publication Date

2006-02-28

Online Available Date

2006-02-28

Revised Date

2005-11-02

Received Date

2005-10-04

Recommended Citation

Xiao-feng LI, Tong-chi XIA, Hui-chao DONG, Yan-wei WEI. Mechanism of Self Discharge Performance Improvement in the Ni-MH Batteries with NaOH Electrolyte[J]. Journal of Electrochemistry, 2006 , 12(1): 85-88.
DOI: 10.61558/2993-074X.1704
Available at: https://jelectrochem.xmu.edu.cn/journal/vol12/iss1/17