Improvement of high-rate capability of alkaline Zn-MnO2 battery

被引:88
作者
Yang, CC [1 ]
Lin, SJ [1 ]
机构
[1] Ming Chi Inst Technol, Dept Chem Engn, Taipei 243, Taiwan
关键词
dendritic-zinc powder; manganese dioxide; impedance; battery; high-rate discharge;
D O I
10.1016/S0378-7753(02)00354-3
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Electrolytic dendritic-zinc powders of high surface area are prepared from an alkaline solution by a galvanostatic electrodeposition method. The surface morphology and microstructure of these powders are examined by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Cylindrical AA-size alkaline zinc-manganese dioxide (Zn-MnO2) batteries made with powders in anode gels are assembled and tested. The electrochemical characteristics of the batteries are evaluated by means of the ac impedance method and the constant-current discharge experiments. It is found that the high-rate performance of cells with dendritic-zinc powders is much better than that of cells with conventional molten-zinc powders. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:174 / 183
页数:10
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