High Power Li-ion Secondary Batteries Based on New Cathode Materials

Acta Scientiarum Naturalium Universitatis Pekinensis

High Power Li-ion Secondary Batteries Based on New Cathode Materials

Received:2006-09-18 Online:2006-12-30 Published:2006-12-30

基于新型正极材料的高功率锂离子电池

王剑¹⁾, 李林香¹⁾, 其鲁^2),3), 安平¹⁾
(¹⁾中信国安盟固利新能源科技有限公司, 北京, 102200; ²⁾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; ³⁾通讯作者, E-mail: qilu@pku.edu.cn)

Abstract

Abstract: The 18650 lithium-ion secondary battery is prepared with spinel LiMn₂O₄ cathode material, and major factors affecting lithium-ion secondary battery's discharge performance under big currents are analyzed, including tab, electrode and electrolyte. Another 18650 high power lithium-ion secondary battery is prepared with innovative cathode material LiMn_xNi_yCo_zO₂, which presents superior performance. The battery endures continuous discharge under 10C and quick charge under 8C and presents excellent cycling and storage performance. The development of 18650 high power lithium-ion secondary battery provides the experimental references for high power lithium-ion secondary battery for hybrid electric vehicle (HEV).

Key words: lithium-ion secondary battery, high power, electrochemical performance

摘要： 采用尖晶石LiMn₂O₄材料制作了18650型锂离子电池, 分析了影响锂离子电池大电流放电性能的主要因素如极耳、极片、电解质溶液等。又采用新型正极材料LiMn_xNi_yCo_zO₂开发出性能更优越的18650型高功率锂离子电池, 该电池可10C连续放电和8C快速充电, 并具有优秀的循环性能和搁置性能。18650型高功率锂离子电池的开发, 为研制混合电动车(HEV)用高功率锂离子电池提供了实验依据。

关键词: 锂离子二次电池, 高功率, 18650型, 电化学性能

CLC Number:

O646
TM91

WANG Jian¹⁾, LI Linxiang¹⁾, Qilu^{2, 3)}, AN Ping¹⁾
(¹⁾CITIC Guoan Mengguli New Energy Technology Co., Ltd., Beijing,102200; ²⁾ New Energy Materials and Technology Laboratory, Department . High Power Li-ion Secondary Batteries Based on New Cathode Materials[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

王剑¹⁾, 李林香¹⁾, 其鲁^2),3), 安平¹⁾
(¹⁾中信国安盟固利新能源科技有限公司, 北京, 102200; ²⁾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; ³⁾通讯作者, E-mail: qilu@pku.edu.cn). 基于新型正极材料的高功率锂离子电池[J]. 北京大学学报（自然科学版）.

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URL: https://xbna.pku.edu.cn/EN/

https://xbna.pku.edu.cn/EN/Y2006/V42/I7/58

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