Degradation Behavior of Electrochemical Performance of Sealed-Type Nickel/Metal Hydride Batteries

稀土学报(英文版), 2003, 21(3): 341-346.

1.School of Chemical Engineering and Environmental Science , Beijing Institute of Technology, National Development Center of Hi-Tech Green Materials, Beijing 100081, China

2.School of Chemical Engineering and Environmental Science , Beijing Institute of Technology, National Development Center of Hi-Tech Green Materials, Beijing 100081, China

3.School of Chemical Engineering and Environmental Science , Beijing Institute of Technology, National Development Center of Hi-Tech Green Materials, Beijing 100081, China

基金项目: 国家重点基础研究发展计划(973计划)(2002CB211800) 国家重点基础研究发展计划(973计划)(2001CCA05000)

Degradation Behavior of Electrochemical Performance of Sealed-Type Nickel/Metal Hydride Batteries

Keywords： degradation behavior

The degradation mechanism of electrochemical performance of sealed-type nickel/metal hydride batteries was investigated. The results indicate that the degradation behavior of Ni/MH battery is not only owing to the lack of electrolyte, but also the deterioration of the active materials on the positive and negative electrodes of Ni/MH batteries. Scanning electron micrographs (SEM), X-ray diffraction (XRD) and laser granularity analyses are presented. The particle pulverization and oxidation during charge/discharge are identified as the main causes for deterioration of the negative and positive electrode in nickel/metal hydride batteries, as well as the cross-section cracking of both anode and cathode.

参考文献

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Degradation Behavior of Electrochemical Performance of Sealed-Type Nickel/Metal Hydride Batteries

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