物理化学学报 >> 2007, Vol. 23 >> Issue (Supp): 36-39.doi: 10.3866/PKU.WHXB2007Supp09

研究论文 上一篇    下一篇

LiMn2O4基锂离子动力电池的应用研究

范茂松; 雷向利; 吴宁宁; 其鲁   

  1. 中信国安盟固利新能源科技有限公司, 北京 102200; 北京大学化学与分子工程学院应用化学系, 新能源材料与技术实验室, 北京 100871
  • 收稿日期:1900-01-01 修回日期:1900-01-01 发布日期:2008-01-04
  • 通讯作者: 范茂松 E-mail:felik@sina.com

Electrochemical Performance of LiMn2O4 Power Battery

FAN Mao-Song; LEI Xiang-Li; WU Ning-Ning; QI Lu   

  1. CITIC Guoan Mengguli New Engery Technology Co. Ltd., Beijing 102200, P. R. China; New Energy Materials and Technology Laboratory, Department of Applied Chemistry, College of Chemical and Molecular Engineering, Peking University, Beijing 100871, P. R. China
  • Received:1900-01-01 Revised:1900-01-01 Published:2008-01-04
  • Contact: FAN Mao-Song E-mail:felik@sina.com

摘要: 对锰酸锂动力电池的最佳电压使用范围进行了研究,同时研究了在过充电(高于5.0 V)、过放电(低于2.0 V)等滥用条件对电池电化学性能的影响. 结果表明: LiMn2O4动力电池在3.0-4.2 V之间循环稳定性最好, 使用寿命最长; LiMn2O4动力电池过充电至5.0 V后, 电池仍可以正常充放电, 只是对电池的循环性能稍有影响, 电池过充电至5.5 V后无法正常充放电, 电池报废; 电池间断性过放电到1.5 V 和连续过放电到2.0 V后, 电池循环性能影响很小;而过放电到1.0 V后电池无法正常工作.

关键词: 锂离子电池, LiMn2O4, 滥用, 电化学性能

Abstract: The physical character of LiMn2O4 sample was investigated through XRD and SEM, then the best voltage scale of spinel LiMn2O4 power batteries was investigated, and the effect of abuse condition, such as overcharge (above 5.0 V) and overdischarge (below 1.5 V), on the electrochemical performance of lithium-ion batteries was researched. The results show that when it charge/discharge at 3.0-4.2 V, the cyclic performance of lithium-ion batteries based on spinel LiMn2O4 is better, and the life is longer. When it was overcharged to 5.0 V, the battery still can charge and discharge normally, but the cyclic performance becomes weak. When it was overcharged to 5.5 V, it can not been charged normally, the battery was useless. When it was discontinuously overdischarge to 1.5 V and continuously overdischarge to 2.0 V, the effect on cyclic performance of battery is slight, but when it was overdischarged to 1.0 V, the battery doesn’t work normally.

Key words: Lithium-ion battery, LiMn2O4, Abuse, Electrochemical performance

MSC2000: 

  • O646