A new interpretation of the LixV2O5 electrochemical behaviour for 1<x<3

被引：51

作者：

Rozier, P ^{[1
]}

Savariault, JM ^{[1
]}

Galy, J ^{[1
]}

机构：

[1] CNRS,CTR ELABORAT MAT & ETUD STRUCT,F-31055 TOULOUSE 4,FRANCE

来源：

SOLID STATE IONICS | 1997年 / 98卷 / 3-4期

关键词：

vanadium pentoxide; intercalation; lithium vanadate; X-ray diffraction; soft chemistry;

D O I：

10.1016/S0167-2738(97)00112-4

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：

Combined Soft and solid state chemistry followed by precite XRD investigations allow us to determine the Li-V-O phase diagram for 1 < x < 3 and to propose a new interpretation of the electrochemistry curve. The xi- and omega-LixV2O5 phases as well as gamma-LixV2O5 for x > 1 values prepared via electrochemistry are not confirmed: for x > 1 several phases successively appear after gamma-LixV2O5, i.e. vanadates LiVO3 and Li3VO4 and mixed valence vanadium oxides like V6O11 and finally V2O3, coming from the classical disproportionnation 2V(4+) --> V3+ + V5+; the cubic 'omega-LixV2O5' phase (x = 3) corresponds to a mixture of the well known (LiVO2)-V-x phase in its cubic form and Li3VO4.

引用

页码：133 / 144

页数：12

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