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Acta Physico-Chimica Sinica  2007, Vol. 23 Issue (Supp): 36-39    DOI: 10.3866/PKU.WHXB2007Supp09
Article     
Electrochemical Performance of LiMn2O4 Power Battery
FAN Mao-Song; LEI Xiang-Li; WU Ning-Ning; QI Lu
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
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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 wordsLithium-ion battery      LiMn2O4      Abuse      Electrochemical performance     
Received: 01 January 1900      Published: 04 January 2008
MSC2000:  O646  
  TM912.9  
Corresponding Authors: FAN Mao-Song     E-mail: felik@sina.com
Cite this article:

FAN Mao-Song; LEI Xiang-Li; WU Ning-Ning; QI Lu. Electrochemical Performance of LiMn2O4 Power Battery. Acta Physico-Chimica Sinica, 2007, 23(Supp): 36-39.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB2007Supp09     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2007/V23/ISupp/36

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