Chemical diffusion coefficients of lithium in LiM(y)Mn(2-y)O(4) (M=Co and Cr)

被引：66
作者：
Wakihara, M
Li, GH
Ikuta, H
Uchida, T
机构：
[1] Department of Chemical Engineering, Tokyo Institute of Technology, Tokyo 152, Ookayama, Meguro-ku
来源：
SOLID STATE IONICS | 1996年 / 86-8卷
关键词：
chemical diffusion coefficient of lithium; LiM(y)Mn(2-y)O(4) spinel;
D O I：
10.1016/0167-2738(96)00213-5
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：
Chemical diffusion coefficients of lithium ions for LiMn2O4 and LiM(y)Mn(2-y)O(4) (M = Co and Cr) were measured using the current pulse relaxation technique at room temperature. The (D) over tilde values for LiMn2O4 were between 10(-9) and 10(-10) cm(2) . s(-1), while those for LiM(y)Mn(2-y)O(4) were at least one order of magnitude larger than those of the original LiMn2O4. An order-disorder phase transition near x = 0.5 for Li(x)M(y)Mn(2-y)O(4) seems to accelerate the diffusion of lithium ions in the spinel structure.
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页码：907 / 909
页数：3
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