Real-time direct observation of Li in LiCoO2 cathode material

被引：56

作者：

Huang, Rong ^{[1
,3
]}

Hitosugi, Taro ^{[2
]}

Findlay, Scott D. ^{[4
]}

Fisher, Craig A. J. ^{[1
]}

Ikuhara, Yumi H. ^{[1
]}

Moriwake, Hiroki ^{[1
]}

Oki, Hideki ^{[5
]}

Ikuhara, Yuichi ^{[1
,4
]}

机构：

[1] Japan Fine Ceram Ctr, Nanostruct Res Lab, Atsuta Ku, Nagoya, Aichi 4568587, Japan

[2] Tohoku Univ, WPI Adv Inst Mat Res WPI AIMR, Sendai, Miyagi 9808577, Japan

[3] E China Normal Univ, Minist Educ, Key Lab Polar Mat & Devices, Shanghai 200062, Peoples R China

[4] Univ Tokyo, Inst Engn Innovat, Bunkyo Ku, Tokyo 1138656, Japan

[5] Toyota Motor Co Ltd, Shizuoka 4101193, Japan

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 05期

基金：

日本学术振兴会;

关键词：

TRANSMISSION ELECTRON-MICROSCOPY; ATOMIC-RESOLUTION; CRYSTALS; BATTERIES; ENERGY; OXIDE;

D O I：

10.1063/1.3551538

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The direct observation of light elements such as Li is a challenge even for state-of-the-art electron microscopy techniques because such elements scatter electrons only weakly. Using the annular bright field scanning transmission electron microscopy imaging technique, we have simultaneously visualized columns of Li, O, and Co ions in the lithium-ion battery cathode material LiCoO2, which is one of the most important cathode materials for industrial applications. The annular bright field image exhibits a good signal-to-noise ratio and the image contrast is not reversed as the specimen thickness changes. The direct visualization of light elements in real time with this method represents an important breakthrough in characterizing the active materials in solid-state electrochemical devices. (C) 2011 American Institute of Physics. [doi:10.1063/1.3551538]

引用

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