Phase diagram of an intercalation compound in the presence of elastic interactions: a mean-field approach

被引：3

作者：

Kalikmanov, VI ^{[1
]}

de Leeuw, SW ^{[1
]}

机构：

[1] Delft Univ Technol, Dept Appl Phys, Compuatat Phys Sect, NL-2628 CJ Delft, Netherlands

来源：

SOLID STATE IONICS | 2002年 / 154卷

关键词：

phase transitions; tricritical line; intercalation compounds; open circuit voltage;

D O I：

10.1016/S0167-2738(02)00428-9

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：

A self-consistent mean-field lattice gas theory of intercalation compounds is proposed in which effective interactions between interstitials are described by short-range screened Coulomb repulsions and long-range attractions due to elasticity of the host matrix. Depending on the relative strength of elastic interactions, the phase diagram contains domains of the first- and second-order transitions of the order-disorder type, separated by a tricritical line, and the domain of a "gas-liquid" transition separated from the homogeneous state by a critical line. These features give rise to different types of behavior of the open circuit voltage (OCV) of a rechargeable battery in which an intercalation compound is used as an electrode material. Theoretical predictions are compared with experiment. (C) 2002 Published by Elsevier Science B.V.

引用

页码：195 / 201

页数：7

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