锂离子电池正极材料LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2在LiNO_3溶液中的电化学性能研究

doi:10.61558/2993-074X.3337

电化学（中英文） ›› 2010, Vol. 16 ›› Issue (2): 151-155. doi: 10.61558/2993-074X.3337

锂离子电池正极材料LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2在LiNO_3溶液中的电化学性能研究

郑隽;贾鑫;王翀;郑明森;董全峰;

厦门大学固体表面物理化学国家重点实验室,化学化工学院化学系;

收稿日期:2010-05-28 修回日期:2010-05-28 出版日期:2010-05-28 发布日期:2010-05-28

Research on Electrochemical Performance of Lithium-Ion Battery Cathode Material LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 in Aqueous LiNO_3 Solution

ZHENG Jun,JIA Xin,WANG Chong,ZHENG Ming-sen,DONG Quan-feng

( State Key Lab of Physical Chemistry of Solid Surfaces,Department of Chemistry, College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China

Received:2010-05-28 Revised:2010-05-28 Published:2010-05-28 Online:2010-05-28

摘要/Abstract

摘要： 由溶胶凝胶法合成的锂离子电池正极材料LiNi1/3Co1/3Mn1/3O2在水溶液体系中具有优异的高倍率充放电性能,放电时能够输出极高功率密度.XRD表征证明合成的LiNi1/3Co1/3Mn1/3O2材料具有层状α-NaFeO2结构,SEM形貌显示材料的粒径约为500nm,恒电流充放电测试表明LiNi1/3Co1/3Mn1/3O2材料在pH12的2mol·L-1LiNO3溶液中,以2C(0.36A/g)倍率充放时,比容量达到了147mAh/g.如以80C(14.4A/g)、150C(27A/g)和220C(39.6A/g)的倍率充放,材料的比容量仍可达到64mAh/g、33mAh/g和16mAh/g,而全电池的功率密度分别达到2574W/kg、3925W/kg、4967W/kg.其中80C倍率充放,经1000周循环后,容量保持率为90.9%.

关键词: 水溶液锂离子电池, LiNi1/3Co1/3Mn1/3O2, 正极材料, 溶胶凝胶法

Abstract: The cathode material of LiNi1/3Co1/3Mn1/3O2 synthesized by sol-gel method shows excellent high rate performance,and high output power density during discharge process. A well-ordered layered α-NaFeO2 structure was confirmed by XRD and a primary particle size of about 500 nm was indicated by SEM. Galvanostatic charge-discharge test indicates that LiNi1/3Co1/3Mn1/3O2 in 2 mol·L-1 LiNO3 aqueous solution with pH 12 reached a ca-pacity of 147 mAh/g while charged and discharged at 2C. The capacities were 64、33、16 mAh/g with 80C ( 14. 4 A/g) 、150C( 27 A/g) and 220C ( 39. 6 A/g) charge/discharge rates,while the power densities of the battery were 2574 W/kg、3925 W/kg、4967 W/kg,respectively. It retained 90. 9% of the initial capacity after 1000 cycles at 80 C.

Key words: aqueous lithium-ion battery, LiNi1/3Co1/3Mn1/3O2, cathode material, sol-gel method

中图分类号:

TM912

郑隽, 贾鑫, 王翀, 郑明森, 董全峰, . 锂离子电池正极材料LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2在LiNO_3溶液中的电化学性能研究[J]. 电化学（中英文）, 2010, 16(2): 151-155.

ZHENG Jun, JIA Xin, WANG Chong, ZHENG Ming-sen, DONG Quan-feng . Research on Electrochemical Performance of Lithium-Ion Battery Cathode Material LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 in Aqueous LiNO_3 Solution[J]. Journal of Electrochemistry, 2010, 16(2): 151-155.

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https://electrochem.xmu.edu.cn/CN/Y2010/V16/I2/151

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锂离子电池正极材料LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2在LiNO_3溶液中的电化学性能研究

Research on Electrochemical Performance of Lithium-Ion Battery Cathode Material LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 in Aqueous LiNO_3 Solution

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