Electrochemical Na-Deintercalation from NaVO2

被引：209

作者：

Didier, C. ^{[1
]}

Guignard, M. ^{[1
]}

Denage, C. ^{[1
]}

Szajwaj, O. ^{[1
]}

Ito, S. ^{[1
]}

Saadoune, I. ^{[1
]}

Darriet, J. ^{[1
]}

Delmas, C. ^{[1
]}

机构：

[1] Univ Bordeaux, CNRS, F-33608 Pessac, France

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2011年 / 14卷 / 05期

关键词：

INTERCALATION; SYSTEMS; NAXCRO2; NAXCOO2; COO2;

D O I：

10.1149/1.3555102

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This paper describes the preparation of NaxVO2 phases by means of electrochemical deintercalation. The curves V = f( x) show that the process is reversible up to x = 0.5 and they indicate the presence of multiple single phase domains in the range 1 < x < 0.5. Two single phases have been successfully isolated for Na1/2VO2 and Na2/3VO2 compositions; we report here the first X-ray powder diffraction measurements of these phases. They present a O'3-type monoclinic distortion of the O3 rhombohedral phase observed for Na1VO2. The evolution of cell parameters with sodium deintercalation is comparable with other A(x)MO(2) layered oxides. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3555102] All rights reserved.

引用

页码：A75 / A78

页数：4

共 29 条

[1] CoO2, the end member of the LixCoO2 solid solution [J].