Topotactic insertion of lithium in the layered structure Li4VO(PO4)2:: The tunnel structure Li5VO(PO4)2

被引：11

作者：

Kishore, M. Satya ^{[1
]}

Pralong, V. ^{[1
]}

CaIgnaert, V. ^{[1
]}

Malo, S. ^{[1
]}

Hebert, S. ^{[1
]}

Varadaraju, U. V. ^{[2
]}

Raveau, B. ^{[1
]}

机构：

[1] Univ Caen, CNRS, ENSICAEN, Lab Cristallog & Sci Mat, F-14050 Caen 4, France

[2] Indian Inst Technol Madras, Math Sci Res Ctr, Madras 6000036, Tamil Nadu, India

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2008年 / 181卷 / 04期

关键词：

Li5VO(PO4)(2); intercalation; Li-ion battery; TEM; vanadium phosphate;

D O I：

10.1016/j.jssc.2008.01.044

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new V(III) lithium phosphate Li5VO(PO4)(2) has been synthesized by electrochemical insertion of lithium into Li4VO(PO4)(2). This phase, which crystallizes in the space group I4/mcm, exhibits a tunnel structure closely related to the layered structure of Li4VO(PO4)(2) and to the tunnel structure of VO(H2PO4)(2). The topotactic reactions that take place during lithium exchange and intercalation, starting from VO(H2PO4)(2) and going to the final phase Li5VO(PO4)(2) are explained on the basis of the flexible coordinations of V4+ and V3+ species. The electrochemical and magnetic properties of this new phase are also presented and explained on the basis of the structure dimensionality. (c) 2008 Published by Elsevier Inc.

引用

页码：976 / 982

页数：7

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