A REINVESTIGATION OF THE STRUCTURES OF LITHIUM-COBALT-OXIDES WITH NEUTRON-DIFFRACTION DATA

被引：117

作者：

GUMMOW, RJ ^{[1
]}

LILES, DC ^{[1
]}

THACKERAY, MM ^{[1
]}

DAVID, WIF ^{[1
]}

机构：

[1] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

来源：

MATERIALS RESEARCH BULLETIN | 1993年 / 28卷 / 11期

关键词：

LITHIUM; COBALT; OXIDES; SPINELS;

D O I：

10.1016/0025-5408(93)90098-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structures of LT-LiCoO2 (synthesised by reaction of Li2CO3 and CoCO3 at 400-degrees-C) and its delithiated product LT-Li0.4CoO2 have been reinvestigated by neutron powder diffraction. Despite an unusually close similarity between diffraction profiles that makes it difficult to determine whether the structures are layered or spinel-like, the data confirm that the preferred structure of the LT-LiCoO2 sample made for this study is one that has a cobalt distribution which is intermediate between an ideal layered and an ideal lithiated spinel structure. On the other hand, refinement of the data of LT-Li0.4CoO2 prepared by reacting LT-LiCoO2 with acid shows, unequivocally, that a spinel-type structure is formed. These structures are discussed in relation to previously reported electrochemical data obtained from Li/LT-LiCoO2 cells.

引用

页码：1177 / 1184

页数：8

共 15 条

[1]

DAVID WIF, 1984, RAL84064 SERC RUTH A

[2] LITHIUM COBALT NICKEL-OXIDE CATHODE MATERIALS PREPARED AT 400-DEGREES-C FOR RECHARGEABLE LITHIUM BATTERIES [J].