Synthesis and structure of olivine-like arsenates LiMAsO4 (M = Mn, Fe, Co and Ni) and their high-pressure spinel-like polymorphs

被引：9

作者：

Alvarez-Vega, Maximo

Gallardo-Amores, Jose Manuel

Garcia-Alvarado, Flaviano

Amador, Ulises

机构：

[1] Univ San Pablo, CEU, Dept Quim, Fac Farm, Madrid 28668, Spain

[2] Univ Complutense Madrid, Lab Altas Presiones, Fac Ciencias Quim, E-28040 Madrid, Spain

来源：

SOLID STATE SCIENCES | 2006年 / 8卷 / 08期

关键词：

arsenate; high-pressure; olivine-spinel transition; olivine; spinel;

D O I：

10.1016/j.solidstatesciences.2006.02.044

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

High pressure has been applied to olivine-like arsenates (LiMAsO4; M = Mn, Fe, Co and Ni), some of them being reported for the first time, to transform them to the corresponding spinel-like polymorph. Below the limit of our experimental set-up (8 GPa, 1273 K) the well known olivine-spinel transformation occurred for all investigated cases but for the manganese one. This transformation is observed for the first time in arsenates and the title compounds are the first examples of arsenic-containing spinel-like oxides. The structure of the olivine and spinel polymorphs are reported. (c) 2006 Elsevier SAS. All rights reserved.

引用

页码：952 / 957

页数：6

共 23 条

[1] Olivine LiCoPO4 as 4.8 V electrode material for lithium batteries [J].