Rheological phase reaction synthesis and electrochemical performance of Li3V2(PO4)3/carbon cathode for lithium ion batteries

被引：81

作者：

Chang, Caixian ^{[1
]}

Xiang, Jiangfeng ^{[1
]}

Shi, Xixi ^{[1
]}

Han, Xiaoyan ^{[1
]}

Yuan, Liangjie ^{[1
]}

Sun, Jutang ^{[1
]}

机构：

[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2008年 / 53卷 / 05期

基金：

中国国家自然科学基金;

关键词：

lithium vanadium phosphate/carbon; high capacity; fast rate; lithium ion batteries; rheological phase reaction;

D O I：

10.1016/j.electacta.2007.09.038

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Monoclinic lithium vanadium phosphate/carbon (Li3V2(PO4)(3)/C) cathode has been synthesized for applications in lithium ion batteries, via a rheological phase reaction (RPR) method. The sample is characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). This material exhibits high initial discharge capacity of 189 and 177 mAh g(-1) at 0.1 and 0.2 C between 3.0 and 4.8 V, respectively. Moreover, it displays good fast rate performance, which discharge capacities of 140, 133, 129 and 124 mAh g I can be delivered after 100 cycles between 3.0 and 4.8 V vs. Li at a different rate of 0.5, 1, 2 and 5 C, respectively. The electrochemical impedance spectroscopy (EIS) is also investigated. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2232 / 2237

页数：6

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