Local Structure of Layered Oxide Electrode Materials for Lithium-Ion Batteries

被引：157

作者：

Bareno, J. ^{[1
,2
]}

Lei, C. H. ^{[1
]}

Wen, J. G. ^{[1
]}

Kang, S-H ^{[2
]}

Petrov, I. ^{[1
]}

Abraham, D. P. ^{[2
]}

机构：

[1] Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA

[2] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA

来源：

ADVANCED MATERIALS | 2010年 / 22卷 / 10期

关键词：

CELLS; LI2MNO3; DIFFRACTION; MICROSCOPY; ELECTROCHEMISTRY; PARTICLES; MN; NI; CO;

D O I：

10.1002/adma.200904247

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Li-ion batteries are promising candidates for electrical energy storage in applications ranging from portable electronics to hybrid and electric vehicles. In this context, layered compounds in the Li1+delta(TMxMn1-x)(1-delta)O-2 family (TM=transition metal) have received much attention due to their high capacity and stability. In this Research News article we describe recent advances on structural characterization of Li-ion electrode materials using state-of-the-art electron microscopy. Direct evidence of the monoclinic nature of Li2MnO3 has been provided. It has been demonstrated that differences in Z-contrast imaging between Li2MnO3 and LiTMO2 may be used to screen samples for phase separation in the 10-100 nm scale.

引用

页码：1122 / 1127

页数：6

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