Effects of Sn doping on electrochemical characterizations of Li[Ni1/3Co1/3Mn1/3]O2 cathode material

被引：14
|
作者：
Ren, Haibo [1 ,2 ]
Mu, Xiaoming [3 ]
Huang, Yanghui [1 ]
Li, Zhongjing [1 ]
Wang, Yunhong [1 ]
Cai, Ping [1 ]
Peng, Zhenghe [1 ]
Zhou, Yunhong [1 ]
机构：
[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
[2] Henan Univ Urban Construct, Dept Chem & Chem Engn, Pingdingshan 467044, Peoples R China
[3] Luoyang Inst Sci & Technol, Environm & Chem Coll, Luoyang 471023, Henan, Peoples R China
来源：
IONICS | 2010年 / 16卷 / 06期
关键词：
Li-ion batteries; Cathodes; Electrochemical characterizations; Charging/discharging; XRD; PERFORMANCE; OPTIMIZATION; TRANSITION; BEHAVIOR; OXIDE;
D O I：
10.1007/s11581-010-0443-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Li[Ni1/3Co1/3Mn1/3]O-2 and Sn-doped Li[Ni1/3Co1/3Mn1/3]O-2 cathode materials for lithium battery are synthesized by a solid-state method. The samples are characterized by X-ray diffraction, scanning electron microscope, electrochemical impedance spectroscopy (EIS), and charge-discharge test. The results show that the Sn-doped Li[Ni1/3Co1/3Mn1/3]O-2 has a typical hexagonal alpha-NaFeO2 structure and strawberry-like shape with uniform particle size. It has also been found that the Sn-doped Li[Ni1/3Co1/3Mn1/3]O-2 reveals better electrochemical performances than that without Sn doping. The EIS results suggest that Sn presence decreases the total resistance of Li[Ni1/3Co1/3Mn1/3]O-2, which should be related to the improvement on the electrochemical properties.
引用
收藏
页码：497 / 502
页数：6
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