One-step synthesis of Li3V2(PO4)3/C positive material with high performance for lithium-ion batteries

被引：39

作者：

Zhou, Xuechou ^{[1
]}

Liu, Yongmei ^{[1
]}

Guo, Yonglang ^{[1
]}

机构：

[1] Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350002, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2008年 / 146卷 / 5-6期

关键词：

lithium-ion batteries; lithium vanadium phosphate; solid-state reaction;

D O I：

10.1016/j.ssc.2008.02.015

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Li3V2(PO4)(3)/C positive material was synthesized via a one-step solid-state reaction route using humic acid as both reduction agent and carbon source. The SEM image shows that the particles merge with each other to form a porous structure. This microstructure helps the electrolyte to penetrate the positive materials and promotes good electronic contact among Li3V2(PO4)(3) Particles. Electrochemical tests display that the Li3V2(PO4)(3)/C positive material reaches an initial discharge capacity of 131.2 mA h g(-1) at 0.2 C and exhibits a good cyclic performance at 3 C charge/discharge rates in the range of 3.0-4.3 V. The results indicate that the one-step solid-state reaction is a promising method suitable for mass production of Li3V2(PO4)(3)/C material with high electrochemical performance. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：261 / 264

页数：4

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