LiAlxCo1-xO2 as 4 V cathodes for lithium ion batteries

被引：33

作者：

Huang, HT

Rao, GVS

Chowdari, BVR

机构：

[1] Natl Univ Singapore, Inst Mat Res & Engn, Singapore 119260, Singapore

[2] Natl Univ Singapore, Dept Phys, Singapore 119260, Singapore

来源：

JOURNAL OF POWER SOURCES | 1999年 / 81卷

关键词：

lithium ion batteries; cathodes; aluminium; cobalt;

D O I：

10.1016/S0378-7753(99)00249-9

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：

Nominal LiAlxCo1-xO2 with x ranging from 0.1 to 0.3 was prepared by heating mixture of Al(OH)(3), Co3O4 and LiOH at 750 degrees C in air. The effect of substitution of non-transition metal, Al, in LiCoO2 is investigated as a 4 V cathode for Lithium ion. X-ray diffraction (XRD) indicates formation of a single phase (R (3) over bar m) within this range of substitution. When cycled between 4.5 and 2.5 V vs. Li/Li+ ta current density of 1 mA cm(-2), the LiAl0.15Co0.85O2 cathode exhibits reversible capacity of 160 mA h g(-1) initially. XRD of the cathode made at the end of 10 cycles reveals no significant change on host structure. (C) 1999 Elsevier Science S.A. All rights reserved.

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收藏

页码：690 / 695

页数：6

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