物理化学学报 >> 2008, Vol. 24 >> Issue (03): 527-532.doi: 10.3866/PKU.WHXB20080331

研究简报 上一篇    下一篇

储氢合金电极中添加碳纳米管对SC型高功率电池性能的影响

陈雨婷; 张海燕; 张国庆; 陈易明; 朱清峰   

  1. 广东工业大学材料与能源学院, 广州 510006
  • 收稿日期:2007-08-15 修回日期:2007-11-27 发布日期:2008-03-10
  • 通讯作者: 张海燕 E-mail:hyzhang@gdut.edu.cn

Influence of Addition of Carbon Nanotubes in the Hydrogen Storage Alloy Electrode on the Performance of SC High Power Batteries

CHEN Yu-Ting; ZHANG Hai-Yan; ZHANG Guo-Qing; CHEN Yi-Ming; ZHU Qing-Feng   

  1. Faculty of Material and Energy, Guangdong University of Technology, Guanzhou 510006, P. R. China
  • Received:2007-08-15 Revised:2007-11-27 Published:2008-03-10
  • Contact: ZHANG Hai-Yan E-mail:hyzhang@gdut.edu.cn

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摘要： 在SC型高功率镍氢电池的负极中添加不同含量的碳纳米管制备SC型高功率镍氢电池, 并对其容量、大电流放电性能和循环寿命进行研究. 结果发现, 碳纳米管的加入有利于提高电池的综合性能, 尤其是大电流放电性能和循环寿命; 加入碳纳米管的含量为0.8%(w)时电池的综合性能最好, 其最高容量达到3369 mAh, 2C(6000 mA)循环600次后容量仍然保持在3280 mAh(97% DOD(放电深度))以上, 5C(15000 mA)循环180 次容量仍然有2850 mAh(89.1% DOD)以上.

关键词: SC型高功率镍氢电池, 碳纳米管, 容量, 循环寿命, 大电流放电性能

Abstract: The carbon nanotubes were added to the cathode to prepare SC high-power Ni/MH batteries. The capacity, large-current discharging performance and cycle life were investigated. It was found that adding carbon nanotubes was greatly advantageous to enhance the batteries’ overall performance, especially the large-rate discharge performance and cycle life. When the weight ratio of the MWNTs in the compound electrode was 0.8%(w), the overall performance of the battery was the best, which showed a highest capacity of 3369 mAh in the condition of 3000 mA charge current and 6000 mA discharge current (2C-rate discharge), and the cycle life surpassed 600 times, the capacities passed 3280 mAh (97% DOD (depth of discharge)). Especially in the condition of 5C-rate large-current discharge (3000 mAh charge current and 15000 mA discharge current), its cycle life surpassed 180 times (89.1% DOD).

Key words: SC high-power Ni/MH batteries, CNTs, Capacity, Cycle life, Large-current discharging performance

MSC2000: 

  • O646