Novel self-catalyzed sol-gel synthesis of high-rate cathode Li3V2(PO4)3/C for lithium ion batteries

被引：39

作者：

Yan, Ji ^{[1
]}

Yuan, Wei ^{[1
]}

Xie, Hui ^{[2
]}

Tang, Zhi-yuan ^{[1
]}

Mao, Wen-feng ^{[1
]}

Ma, Li ^{[3
]}

机构：

[1] Tianjin Univ, Dept Appl Chem, Sch Chem & Engn, Tianjin 300072, Peoples R China

[2] Univ Texas Austin, Texas Mat Inst, Austin, TX 78712 USA

[3] McNair Technol Co Ltd, Dongguan 523700, Guangdong, Peoples R China

来源：

MATERIALS LETTERS | 2012年 / 71卷

基金：

美国国家科学基金会;

关键词：

Lithium vanadium phosphate; Coating carbon; Sol-gel preparation; Li-ion battery; COMPOSITE;

D O I：

10.1016/j.matlet.2011.11.099

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel sol-gel method for synthesizing high-rate Li3V2(PO4)(3)/C cathode material has been developed via a self-catalyzed reaction between the raw materials of Li2CO3, V2O5 and NH4H2PO4. X-ray diffraction, scanning electron microscopy and field emission transmission electron microscopy were used to define the crystal structure and morphology of the composite. Electrochemical measurements indicate that the obtained Li3V2(PO4)(3)/C composite presents a specific discharge capacity of 129.97 mAh g(-1) at 1 C rate while maintaining 115.35 mAh g(-1) (88.75%) at 10 C rate, without significant capacity fading after 200 cycles. The results demonstrate that the Li3V2(PO4)(3)/C material prepared via the novel sol-gel method has great potential to be used in high-power lithium ion batteries. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1 / 3

页数：3

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