Li conductivity in LixMPO4 (M = Mn, Fe, Co, Ni) olivine materials

被引：1049

作者：

Morgan, D ^{[1
]}

Van der Ven, A

Ceder, G

机构：

[1] Computat Modeling Consultants, Wellesley, MA 02482 USA

[2] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 02期

关键词：

D O I：

10.1149/1.1633511

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Materials with the olivine LixMPO4 structure form an important class of rechargeable battery cathodes. Using first-principles methods, activation barriers to Li ion motion are calculated and an estimate for Li diffusion constants, in the absence of electrical conductivity constraints, is made. Materials with M=Mn, Fe, Co, Ni are considered. Li diffuses through one-dimensional channels with high energy barriers to cross between the channels. Without electrical conductivity limitations the intrinsic Li diffusivity is high. (C) 2003 The Electrochemical Society.

引用

页码：A30 / A32

页数：3

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