Real-time direct observation of Li in LiCoO2 cathode material

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 visualiz...

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Veröffentlicht in:Applied physics letters 2011-01, Vol.98 (5)
Hauptverfasser: Huang, Rong, Hitosugi, Taro, Findlay, Scott D., Fisher, Craig A. J., Ikuhara, Yumi H., Moriwake, Hiroki, Oki, Hideki, Ikuhara, Yuichi
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container_issue 5
container_start_page
container_title Applied physics letters
container_volume 98
creator Huang, Rong
Hitosugi, Taro
Findlay, Scott D.
Fisher, Craig A. J.
Ikuhara, Yumi H.
Moriwake, Hiroki
Oki, Hideki
Ikuhara, Yuichi
description 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.
doi_str_mv 10.1063/1.3551538
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title Real-time direct observation of Li in LiCoO2 cathode material
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