Synthesis and electrochemical properties of cobalt vanadates vs. lithium

被引：79

作者：

Baudrin, E ^{[1
]}

Laruelle, S ^{[1
]}

Denis, S ^{[1
]}

Touboul, M ^{[1
]}

Tarascon, JM ^{[1
]}

机构：

[1] Univ Picardie, Lab React & Chim Solides, F-80039 Amiens, France

来源：

SOLID STATE IONICS | 1999年 / 123卷 / 1-4期

关键词：

lithium; cobalt-based vanadates; coprecipitation method; electrochemical properties;

D O I：

10.1016/S0167-2738(99)00096-X

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 coprecipitation method has been used to prepare several cobalt-based vanadates. New hydrates such as beta-Co(VO3)(2). 2H(2)O, Co2V2O7. 3.3H(2)O, Co-3(VO4)(2). 12H(2)O and (NH4)(2)Co2V10O28. 16H(2)O have been obtained. During the synthesis, several parameters, namely the pH value, must be finely controlled to prepare pure phases. Thermal treatment of these: hydrated precursors give well-known related anhydrous compounds as well as new ones such as beta-Co(VO3)(2). All these materials were tested for their electrochemical properties vs, lithium. The best results were obtained for the alpha-Co(VO3)(2) phase that can reversibly react with 9.5 lithium ions with only 17% of irreversible capacity leading to a total reversible capacity of 600 mAh/g after the 5th cycle. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：139 / 153

页数：15

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