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电化学(中英文) ›› 2012, Vol. 18 ›› Issue (1): 84-88.  doi: 10.61558/2993-074X.2885

• 研究论文 • 上一篇    下一篇

电化学浸渍法制备空间氢镍电池用镍电极的循环寿命研究

张海昌*, 檀立新, 呙成, 明文成, 任学颖   

  1. 中国电子科技集团公司第十八研究所 天津 300381
  • 收稿日期:2011-08-10 修回日期:2011-09-21 出版日期:2012-02-28 发布日期:2011-11-01
  • 通讯作者: 张海昌 E-mail:hchzhang@mail.nankai.edu.cn

Cycle Lifetime Investigation of Nickel Electrode Prepared by Electrochemical Impregnation for Applications in Aerospace Nickel Hydrogen Cells

ZHANG  Hai-Chang*, TAN  Li-Xin, GUO  Cheng, MING  Wen-Cheng, REN  Xue-Ying   

  1. Tianjin institute of power source, Tianjin 300381
  • Received:2011-08-10 Revised:2011-09-21 Published:2012-02-28 Online:2011-11-01
  • Contact: ZHANG Hai-Chang E-mail:hchzhang@mail.nankai.edu.cn

摘要: 以空间储能电源4.5’镍极板为对象,研究了过充电、高倍率及极板孔径对电化学浸渍电极循环寿命的影响. 结果表明,5C过充电70%,电极初始容量为2.7Ah, 150次循环其容量逐渐下降,300次循环,其放电容量约为1.7Ah(保持率约63%).5C无过充电,300次循环其容量保持率约100%,1000次循环,其容量仍保持率约76%.无过充电,极板孔径及小电流活化均可改善电极循环性能.

关键词: 空间氢镍电池, 镍电极, 电化学浸渍, 循环寿命

Abstract: In this paper, the effects of overcharge, charge-discharge C rate and pore size on cycle lifetime of 4.5’ electrochemical impregnated nickel electrode were investigated. In the case of the electrode was overcharged to 170% of nominal capacity, the initial capacity of the electrode could be maintained 2.7 Ah up to 150 cycles without deterioration and a discharge capacity of 1.7 Ah (remaining 63% of 2.7 Ah ) could be delivered after 300 cycles. Without overcharge, more than 300 charge-discharge cycles could be realized without loss of capacity and a discharge capacity of electrode could be maintained about 76% of initial capacity even after 1000 cycles. The experimental results also showed that without overcharge the increase in pore size and activation with small current could improve the electrode cycle capability.

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