Preparation and characterization of LiV3O8 cathode material for lithium secondary batteries through an EDTA-sol-gel method

被引：42

作者：

Zhou, Yuan ^{[1
]}

Yue, Hong-Fei ^{[1
,2
]}

Zhang, Xin-Yue ^{[1
,2
]}

Deng, Xiao-Yu ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

SOLID STATE IONICS | 2008年 / 179卷 / 27-32期

关键词：

lithium ion battery; LiV3O8; sol-gel; EDTA;

D O I：

10.1016/j.ssi.2008.03.025

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：

LiV3O8 is a very promising cathode material for lithium secondary batteries. An EDTA-sol-gel method was proposed for the first time to obtain LiV3O8 at low temperature. LiAc center dot 2H(2)O, NH4VO3 and EDTA were used as raw materials to prepare the precursor, and then the precursor was sintered to obtain the layered structure of LiV3O8. The effect of sintering temperature and duration on the quality of LiV3O8 was investigated. We also tested the electrochemical performances of LiV3O8 obtained through the method. The sample heated at 550 degrees C for 15 h has a single-phase layered structure and it has a first cycle discharge capacity of 251.7 mA h g(-1) at the range of 1.8-3.6 V at 0.1 mA and an average capacity decay rate of 0.43% per cycle after 30 cycles. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1763 / 1767

页数：5

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