Synthesis of (1-2x)LiNi1/2Mn1/2O2•xLi[Li1/3Mn2/3]O2•xLiCoO2 (0 ≤ x ≤ 0.5) electrode materials and comparative study on cooling rate

被引：44

作者：

Zhang, LQ ^{[1
]}

Takada, K ^{[1
]}

Ohta, N ^{[1
]}

Fukuda, K ^{[1
]}

Sasaki, T ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF POWER SOURCES | 2005年 / 146卷 / 1-2期

关键词：

lithium ion battery; layered cathode; lithium cobalt nickel manganese oxides; solid-state reaction; cooling rate;

D O I：

10.1016/j.jpowsour.2005.03.122

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：

Layered cathode materials with the nominal compositions of (1 - 2x)LiNi(1/2)Mn(1/2)O(2)(.)xLi[Li1/3Mn2/3]O(2)(.)xLiCoO(2) (0 <= x <= 0.5) were synthesized by a simple solid-state reaction on the basis of good structural compatibility between the three layered compounds, LiNi1/2Mn1/2O2, Li[Li1/3Mn2/3]O-2, and LiCoO2. Increasing contents of Li[Li1/3Mn2/3]O-2 and LiCoO2 in the materials decreased the occupancy of transitional metal ions in Li layers and thus remarkably improved electrochemical performances; but it also brought about an irreversible initial charge plateau when x reached 0.3. The comparative studies on cooling rates showed that different cooling rates in the material preparation hardly gave different electrode performances. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：598 / 601

页数：4

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