Synthesis and Electrochemical Performance Study of Cathode Material Li(CoxNiyMn1-x-y)O2 for High Power Lithium Ion Secondary Battery

Acta Scientiarum Naturalium Universitatis Pekinensis

Synthesis and Electrochemical Performance Study of Cathode Material Li(Co_xNi_yMn_1-x-y)O₂ for High Power Lithium Ion Secondary Battery

Qilu^1,2, JIANG Weijun², WANG Jian², MAO Yongzhi², CHEN Hui², WU Ningning², LEI Xiangli²

1. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871; 2. CITIC Guoan Mengguli New Energy Tech. Co., Beijing 102200;

Received:2009-10-27 Online:2010-11-20 Published:2010-11-20

复合金属氧化物正极材料 Li(Co_xNi_yMn_1-x-y)O₂高功率锂离子动力电池的试制及电化学性能的研究

其鲁^1,2,江卫军²,王剑²,毛永志²,晨晖²,吴宁宁²,雷向丽²

1. 北京大学化学与分子工程学院, 北京 100871; 2. 中信国安盟固利新能源科技公司,北京 102200;

Abstract

Abstract: High capacity and high voltage composite metal oxide Li(Co_xNi_yMn_1-x-y)O₂ used in high power lithiumion secondary batteries was synthesized by chemical method. 8 Ah high power lithium ion batteries with this cathode material were fabricated and studied, and the battery system were tested in Hybrid Electric Vehicle (HEV). The results show that the battery system holds excellent cycle performance and uniformity. Furthermore, the highest temperature increase of individual batteries is just 5℃ which means the battery system holds good thermal stability. Consequently this battery system fits HEV very well.

Key words: high power lithium ion secondary battery, battery system, hybrid electric vehicle (HEV)

摘要： 用化学方法合成用于锂离子动力电池正极的新型高电压高容量复合金属氧化物材料Li(Co_xNi_yMn_1-x-y)O₂试制了具有良好热稳定性的高功率 8 Ah 锂离子动力电池。在研究了该电池的电化学性能后, 研制了用于混合动力电动车辆的电池系统并进行了车载实验。结果表明该电池系统在深度放电条件下不仅显现出十分优越的循环性能和一致性, 经过模拟工况测试后的数据还表明单体电池升温最高仅为 5℃, 即电池系统还具有良好的热稳定性, 因此该电池系统是适合用于混合动力电动汽车的。

关键词: 高功率动力锂离子电池, 电池系统, 混合动力电动汽车

CLC Number:

TM91

Qilu,JIANG Weijun,WANG Jian,MAO Yongzhi,CHEN Hui,WU Ningning,LEI Xiangli. Synthesis and Electrochemical Performance Study of Cathode Material Li(Co_xNi_yMn_1-x-y)O₂ for High Power Lithium Ion Secondary Battery[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

其鲁,江卫军,王剑,毛永志,晨晖,吴宁宁,雷向丽. 复合金属氧化物正极材料 Li(Co_xNi_yMn_1-x-y)O₂高功率锂离子动力电池的试制及电化学性能的研究[J]. 北京大学学报（自然科学版）.

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Synthesis and Electrochemical Performance Study of Cathode Material Li(Co_xNi_yMn_1-x-y)O₂ for High Power Lithium Ion Secondary Battery

复合金属氧化物正极材料 Li(Co_xNi_yMn_1-x-y)O₂高功率锂离子动力电池的试制及电化学性能的研究

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