Li-storage via heterogeneous reaction in selected binary metal fluorides and oxides

被引：553

作者：

Li, H ^{[1
]}

Balaya, P ^{[1
]}

Maier, J ^{[1
]}

机构：

[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2004年 / 151卷 / 11期

关键词：

D O I：

10.1149/1.1801451

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We report on electrochemical reactions of a variety of metal fluorides (TiF3, VF3, MnF2, FeF2, CoF2, NiF2, CuF2, CaF2, BaF2), metal oxides (TiO, TiO2, VO2, V2O3, V2O5, NbO, NbO2, Cr2O3, RuO2, MoO3), TiS2, and TiN with lithium in nonaqueous lithium cells over a wide voltage range (0.02-4.3 V) at room temperature. In most cases, deep Li uptake occurs via heterogeneous reaction resulting in transformation of MXm (M = transition metal; X = F or O or S or N) into a nanocrystalline or amorphous LiXm/n/M composite from which Li can be extracted under restoration of the MXm phase. Thermodynamic and kinetic aspects, especially overpotential and its possible origins for both Li uptake and Li extraction processes, are discussed. (C) 2004 The Electrochemical Society.

引用

页码：A1878 / A1885

页数：8

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