Enhanced cycleability of LiCoO2 coated with vanadium oxides

被引：30

作者：

Lee, Jae-Won ^{[1
]}

Park, Sun-Min ^{[1
]}

Kim, Hae-Jin ^{[2
]}

机构：

[1] KICET, Seoul 153801, South Korea

[2] KBSI, Taejon 305333, South Korea

来源：

JOURNAL OF POWER SOURCES | 2009年 / 188卷 / 02期

关键词：

Vanadium oxide; Lithium-ion battery; Lithium cobalt oxide; Sol-gel process; Cycleability; Melt-quenching method; LITHIUM RECHARGEABLE CELLS; CATHODE MATERIALS; ELECTROCHEMICAL PERFORMANCE; ION BATTERIES; DOPED LICOO2; 4.5; V; CHARGE; MG;

D O I：

10.1016/j.jpowsour.2008.11.124

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：

Vanadium oxide (V2O5/V2O5 hydrates) sol-gel coatings on lithium Cobalt Oxide (LiCoO2) are investigated as a means are prepared to improve the cycleability at a high-charge cut-off voltage. The V2O5 sol was prepared by a melt-quenching method. The crystal Structure and morphology of the samples are examined by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The charge and discharge characteristics, including cycleability, are measured at room temperature, and the electrochemical properties of bare and coated LiCoO2 are compared. Overall, a vanadium oxide coating on LiCoO2 improves the cycleability at a high-charge cut-off voltage. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：583 / 587

页数：5

共 16 条

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