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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

Publication Date

2006-02-28

Online Available Date

2006-02-28

Revised Date

2005-11-02

Received Date

2005-10-04

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