Synthesis and rate performance of lithium vanadium phosphate as cathode material for Li-ion batteries

被引：43

作者：

Huang, Bing ^{[1
]}

Fan, Xiaoping ^{[2
]}

Zheng, Xiaodong ^{[1
]}

Lu, Mi ^{[1
]}

机构：

[1] Binzhou Univ, Dept Chem & Chem Engn, Lab Clean Energy, Binzhou 256603, Shandong, Peoples R China

[2] ChangHong Grp, Mil Representat Off, Mianyang 621000, Sichuan, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 14期

关键词：

Lithium-ion batteries; Electrode materials; Lithium vanadium phosphate; Rate performance; Solid state reaction; ELECTROCHEMICAL PERFORMANCE; DOPED LI3V2(PO4)(3); COMPOSITE;

D O I：

10.1016/j.jallcom.2011.01.151

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 sphere-like carbon-coated Li3V2(PO4)(3) composite was synthesized by carbothermal reduction method with two sessions of ball milling followed by spray-drying with the dispersant of polyethylene glycol added. The structure, particle size, and surface morphology of the cathode material were investigated via X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscopy. Results indicate that the Li3V2(PO4)(3)/C composite has a sphere-like morphology composed of a large number of carbon-coated ultrafine particles linked together with a monoclinic structure. In the voltage range of 3.0-4.3 V, it exhibits the discharge capacities of 130mAh g(-1) and 100mAh g(-1) at 0.2 C and 20 C rates, respectively. This behavior indicates that the obtained Li3V2(PO4)(3)/C material has excellent rate capability. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：4765 / 4768

页数：4

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