A facile method of improving the high rate cycling performance of LiNi1/3Co1/3Mn1/3O2 cathode material

被引：29

作者：

Wang, Qin ^{[1
]}

Tian, Na ^{[1
]}

Xu, Ke ^{[1
]}

Han, Liyuan ^{[1
]}

Zhang, Jing ^{[1
]}

Zhang, Weihua ^{[1
]}

Guo, Shaohua ^{[1
]}

You, Caiyin ^{[1
]}

机构：

[1] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 686卷

关键词：

Li ion battery; Cycling performance; Current shunting; ELECTROCHEMICAL PROPERTIES; RATE CAPABILITY; LI; LICO1/3NI1/3MN1/3O2; ELECTROLYTES; COMPOSITE; DIFFUSION;

D O I：

10.1016/j.jallcom.2016.06.017

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：

A facile method of physically mixing LiNi1/3Co1/3Mn1/3O2 (NMC) with a certain amount of LiFe0.4Mn0.6PO4 (LFMP) is found to be very effective for improving the high rate cycling performance of NMC. At a high current rate of 2C, the capacity remnants of the composite cathode with 10 wt% LFMP is about 115 mAh g(-1), much higher than 54 mAh g(-1) of the single NMC. Electrochemical impedance spectroscopy (EIS) analyses show that the composite cathode with 10 wt% LFMP presents the lower charge transfer resistance and two magnitude higher diffusion coefficient of Li+ in comparison to the single NMC, which contributes to the improved cycling performance. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：267 / 272

页数：6

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