Self-discharge performance of Ni-MH battery by using electrodes with hydrophilic/hydrophobic surface

被引：3
|
作者：
Li, Xiaofeng [1 ]
Wang, Xiaojie [1 ]
Dong, Huichao [1 ]
Xia, Tongchi [1 ]
Wang, Lizhen [1 ]
Song, Yanhua [1 ]
机构：
[1] Zhengzhou Univ Light Ind, Henan Prov Key Lab Surface & Interface, Zhengzhou 450002, Peoples R China
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2013年 / 74卷 / 12期
关键词：
Electronic materials; Surfaces; Electrochemical properties; Surface properties; NICKEL-METAL HYDRIDE; MECHANISM; SEPARATORS;
D O I：
10.1016/j.jpcs.2013.07.004
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The polytetrafluoroethylene (PTFE) and carboxymethyl cellulose (CMC) film is separately coated on the surface of the metal hydride (MH) and Ni(OH)(2) electrodes to obtain the electrodes with hydrophobic or hydrophilic surface. The effects of the surface treatment on the oxygen and hydrogen evolution from the electrodes are studied by using cyclic voltammetry tests. Although the positive and negative active materials of the Ni-MH batteries show a lower self-decomposition rate after the CMC treatment, the self-discharge rate of the batteries show little change. On the contrary, the self-discharge rate of the batteries decreases from 35.9% to 27.1% by using the PTFE-treated Ni(OH)(2) electrodes, which might be related to the suppression of the reaction between NiOOH and H-2 by the hydrophobic film. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1756 / 1760
页数：5
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