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Citation: FAN Mao-Song, LEI Xiang-Li, WU Ning-Ning, QI Lu. Electrochemical Performance of LiMn₂O₄ Power Battery[J]. Acta Physico-Chimica Sinica, ;2007, 23(0): 36-39. doi: 10.3866/PKU.WHXB2007Supp09 shu

Electrochemical Performance of LiMn₂O₄ Power Battery

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

Available Online: 4 January 2008

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.
- Lithium-ion battery; LiMn2O4; Abuse; Electrochemical performance
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Electrochemical Performance of LiMn₂O₄ Power Battery