Structural in-situ study of Li intercalation in Li1+αMn2-αO4 spinel-type oxides

被引：17

作者：

Le Cras, F

Anne, M

Bloch, D

Strobel, P

机构：

[1] CNRS, Lab Cristallog, F-38042 Grenoble 9, France

[2] CEA, LSE, SPCM, DEM, F-38054 Grenoble, France

来源：

SOLID STATE IONICS | 1998年 / 106卷 / 1-2期

关键词：

lithium intercalation; spinels; manganese oxide; X-ray diffraction;

D O I：

10.1016/S0167-2738(97)00490-6

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：

Spinel oxides with compositions LiMn2O4 and Li1.23Mn1.77O4 were studied using an air-tight electrochemical lithium cell mounted on an X-ray powder diffractometer. The combination of electrochemical and X-ray data unambiguously shows the appearance of a tetragonal phase as soon as lithium intercalation in the host oxide begins. The lithium intercalation reaction is found to be two-phase for both oxide hosts, in spite of the high initial manganese oxidation state in Li1.23Mn1.77O4 (+ 3.82), which lies well above the expected Jahn-Teller distortion limit(+ 3.5). The tetragonal distortion is much stronger in lithiated Li2Mn2O4 than in Li1.23+xMn1.77O4.

引用

页码：1 / 10

页数：10

共 13 条

[1] An electrochemical investigation into the lithium insertion properties of LixNiO2 (0<=x<=1)
Barker, J
Koksbang, R
Saidi, MY
[J]. SOLID STATE IONICS, 1996, 89 (1-2) : 25 - 35
[2] STRUCTURE REFINEMENT OF THE SPINEL-RELATED PHASES LI2MN2O4 AND LI0.2MN2O4
DAVID, WIF
THACKERAY, MM
DEPICCIOTTO, LA
GOODENOUGH, JB
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 1987, 67 (02) : 316 - 323
[3] DEFECT SPINELS IN THE SYSTEM LI2O.YMNO2 (Y-GREATER-THAN-2.5) - A NEUTRON-DIFFRACTION STUDY AND ELECTROCHEMICAL CHARACTERIZATION OF LI2MN4O9
DEKOCK, A
ROSSOUW, MH
DEPICCIOTTO, LA
THACKERAY, MM
DAVID, WIF
IBBERSON, RM
[J]. MATERIALS RESEARCH BULLETIN, 1990, 25 (05) : 657 - 664
[4] DENIARD P, 1989, THESIS U NANTES FRAN
[5] THE CARBON LI1+XMN2O4 SYSTEM
GUYOMARD, D
TARASCON, JM
[J]. SOLID STATE IONICS, 1994, 69 (3-4) : 222 - 237
[6] Low-temperature lithium-manganese oxide cathode materials for polymer batteries
Le Cras, F
Bloch, D
Strobel, P
[J]. JOURNAL OF POWER SOURCES, 1996, 63 (01) : 71 - 77
[7] Lithium intercalation in Li-Mg-Mn-O and Li-Al-Mn-O spinels
Le Cras, F
Bloch, D
Anne, M
Strobel, P
[J]. SOLID STATE IONICS, 1996, 89 (3-4) : 203 - 213
[8] LE CRAS F, 1995, MATER RES SOC SYMP P, V369, P39
[9] LONCHAMPT G, 1992, Patent No. 6129
[10] MOUGET Y, LICENSED BIOLOGIC

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