Electrochemical properties of Al doped Li(Ni1/3Co1/3Mn1/3)O2

被引：2
|
作者：
Kim, Seon Hye [1 ]
Shim, Kwang Bo [1 ]
Han, Kyoung Ran [2 ]
Kim, Chang-Sam [3 ]
机构：
[1] Hanyang Univ, Dept Ceram Engn, 17 Haengdang Dong, Seoul 133791, South Korea
[2] Korea Adv Inst Sci & Technol, Div Mat Sci & Technol, Seoul 130650, South Korea
[3] Korea Adv Inst Sci & Technol, Battery Res Ctr, Seoul 130650, South Korea
来源：
ADVANCES IN NANOMATERIALS AND PROCESSING, PTS 1 AND 2 | 2007年 / 124-126卷
关键词：
lithium ion battery; lithium nickel cobalt manganese oxide; Al doping; oxidation state; cycle stability;
D O I：
10.4028/www.scientific.net/SSP.124-126.1023
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Al doped Li(Ni1/3Co1/3Mn1/3-xAlx)O-2 (x=0.005, 0.01, 0.05) and Li(Ni1/3-x/2Co1/3Mn1/3-x/2Alx)O-2 (x=0.01, 0.05) cathode materials for lithium ion batteries were synthesized using an ultrasonic spray pyrolysis and heat treatment. The substitution with Al reduced the content of Mn3+, promoted grain growth, and broadened the particle size distribution of synthesized powders. The initial discharge capacity of cells made with 0.5 mol% Al doped Li(Ni1/3Co1/3Mn1/3-0.005Al0.005)O-2 powder was as high as that of the undoped (similar to 180 mAhg(-1), 3.0-4.5 V), and showed an excellent cycle stability. The improvement of the cycle stability was considered to be due to the decrease of Mn3+ in Li(Co1/3Ni1/3Mn1/3-xAlx)O-2 by Al doping.
引用
收藏
页码：1023 / +
页数：2
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