Effect of lithium boron oxide glass coating on the electrochemical performance of LiNi1/3Co1/3Mn1/3O2

被引：34
作者：
Dou, Junqing [1 ,2 ,3 ]
Kang, Xueya [1 ,3 ]
Wumaier, Tuerdi [1 ,3 ]
Yu, Hongwei [1 ]
Hua, Ning [1 ,3 ]
Han, Ying [1 ,3 ]
Xu, Guoqing [1 ,3 ]
机构：
[1] Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Xinjiang, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
[3] Xinjiang Key Labs Elect Informat Mat & Devices, Urumqi 830011, Xinjiang, Peoples R China
来源：
JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2012年 / 16卷 / 04期
关键词：
Lithium boron oxide glass; Coating; Cathode material; Lithium-ion batteries; CATHODE MATERIAL; LI(NI1/3CO1/3MN1/3)O-2; CONDUCTIVITY;
D O I：
10.1007/s10008-011-1550-1
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The effect of the lithium boron oxide glass coating on the electrochemical performance of LiNi1/3Co1/3Mn1/3O2 has been investigated via solution method. The morphology, structure, and electrochemical properties of the bare and coated LiNi1/3Co1/3Mn1/3O2 are characterized by scanning electron microscopy, X-ray diffraction, electrochemical impedance spectroscopy, and charge-discharge tests. The results showed that the lattice structure of LiNi1/3Co1/3Mn1/3O2 is not changed after coating. The coating sample shows good high-rate discharge performance (148 mAh g(-1) at 5.0 C rate) and cycling stability even at high temperature (with the capacities retention about 99% and 87% at room and elevated temperature after 50 cycles). The Li+ diffusion coefficient is also largely improved, while the charge transfer resistance, side reactions within cell, and the erosion of Hydrofluoric Acid all reduced. Consequently, the good electrochemical performances are obtained.
引用
收藏
页码：1481 / 1486
页数：6
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