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 , 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.
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31 January 2011
Research Article|
February 01 2011
Real-time direct observation of Li in cathode material
Rong Huang;
Rong Huang
1Nanostructures Research Laboratory,
Japan Fine Ceramics Center
, Atsuta, Nagoya 456-8587, Japan
3Key Laboratory of Polar Materials and Devices, Ministry of Education,
East China Normal University
, Shanghai 200062, People's Republic of China
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Taro Hitosugi;
Taro Hitosugi
2WPI Advanced Institute for Materials Research (WPI-AIMR),
Tohoku University
, Sendai 980-8577, Japan
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Scott D. Findlay;
Scott D. Findlay
4Institute of Engineering Innovation,
The University of Tokyo
, Bunkyo, Tokyo 113-8656, Japan
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Craig A. J. Fisher;
Craig A. J. Fisher
1Nanostructures Research Laboratory,
Japan Fine Ceramics Center
, Atsuta, Nagoya 456-8587, Japan
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Yumi H. Ikuhara;
Yumi H. Ikuhara
1Nanostructures Research Laboratory,
Japan Fine Ceramics Center
, Atsuta, Nagoya 456-8587, Japan
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Hiroki Moriwake;
Hiroki Moriwake
1Nanostructures Research Laboratory,
Japan Fine Ceramics Center
, Atsuta, Nagoya 456-8587, Japan
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Hideki Oki;
Hideki Oki
5
Toyota Motor Corporation
, Susono, Shizuoka 410-1193, Japan
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Yuichi Ikuhara
Yuichi Ikuhara
a)
1Nanostructures Research Laboratory,
Japan Fine Ceramics Center
, Atsuta, Nagoya 456-8587, Japan
4Institute of Engineering Innovation,
The University of Tokyo
, Bunkyo, Tokyo 113-8656, Japan
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a)
Electronic mail: [email protected].
Appl. Phys. Lett. 98, 051913 (2011)
Article history
Received:
October 27 2010
Accepted:
January 11 2011
Citation
Rong Huang, Taro Hitosugi, Scott D. Findlay, Craig A. J. Fisher, Yumi H. Ikuhara, Hiroki Moriwake, Hideki Oki, Yuichi Ikuhara; Real-time direct observation of Li in cathode material. Appl. Phys. Lett. 31 January 2011; 98 (5): 051913. https://doi.org/10.1063/1.3551538
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