Nanoscale observation of the electronic and local structures of LiCoO 2 thin film electrode by depth-resolved X-ray absorption spectroscopy

Daiko Takamatsu; Takayuki Nakatsutsumi; Shinichiro Mori; Yuki Orikasa; Masato Mogi; Hisao Yamashige; Kenji Sato; Takahiro Fujimoto; Yu Takanashi; Haruno Murayama; Masatsugu Oishi; Hajime Tanida; Tomoya Uruga; Hajime Arai; Yoshiharu Uchimoto; Zempachi Ogumi

doi:10.1021/jz2011226

Nanoscale observation of the electronic and local structures of LiCoO ₂ thin film electrode by depth-resolved X-ray absorption spectroscopy

Daiko Takamatsu, Takayuki Nakatsutsumi, Shinichiro Mori, Yuki Orikasa, Masato Mogi, Hisao Yamashige, Kenji Sato, Takahiro Fujimoto, Yu Takanashi, Haruno Murayama, Masatsugu Oishi, Hajime Tanida, Tomoya Uruga, Hajime Arai, Yoshiharu Uchimoto, Zempachi Ogumi

Research output: Contribution to journal › Article

32 Citations (Scopus)

Abstract

The electronic and local structural changes during electrochemical delithiation processes occurring at the electrode/electrolyte interface of LiCoO₂ thin film electrode prepared by pulsed laser deposition were clarified by using depth-resolved X-ray absorption spectroscopy technique. We successfully obtained detailed microstructural information around the Li _1-xCoO₂ electrode surface with a depth resolution of ca. 3 nm using a spectro-electrochemical cell. Our results revealed a remarkable increase in the local distortions at the Li_1-xCoO₂ surface after charging, and the distortions extended to the bulk of Li _1-xCoO₂. Such unprecedented local distortions might be attributable to the marked deterioration of the electrodes.

Original language	English
Pages (from-to)	2511-2514
Number of pages	4
Journal	Journal of Physical Chemistry Letters
Volume	2
Issue number	20
DOIs	https://doi.org/10.1021/jz2011226
Publication status	Published - Oct 20 2011
Externally published	Yes

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All Science Journal Classification (ASJC) codes

Materials Science(all)
Physical and Theoretical Chemistry

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Takamatsu, D., Nakatsutsumi, T., Mori, S., Orikasa, Y., Mogi, M., Yamashige, H., ... Ogumi, Z. (2011). Nanoscale observation of the electronic and local structures of LiCoO ₂ thin film electrode by depth-resolved X-ray absorption spectroscopy. Journal of Physical Chemistry Letters, 2(20), 2511-2514. https://doi.org/10.1021/jz2011226

Nanoscale observation of the electronic and local structures of LiCoO ₂ thin film electrode by depth-resolved X-ray absorption spectroscopy. / Takamatsu, Daiko; Nakatsutsumi, Takayuki; Mori, Shinichiro; Orikasa, Yuki; Mogi, Masato; Yamashige, Hisao; Sato, Kenji; Fujimoto, Takahiro; Takanashi, Yu; Murayama, Haruno; Oishi, Masatsugu; Tanida, Hajime; Uruga, Tomoya; Arai, Hajime; Uchimoto, Yoshiharu; Ogumi, Zempachi.

In: Journal of Physical Chemistry Letters, Vol. 2, No. 20, 20.10.2011, p. 2511-2514.

Research output: Contribution to journal › Article

Takamatsu, D, Nakatsutsumi, T, Mori, S, Orikasa, Y, Mogi, M, Yamashige, H, Sato, K, Fujimoto, T, Takanashi, Y, Murayama, H, Oishi, M, Tanida, H, Uruga, T, Arai, H, Uchimoto, Y & Ogumi, Z 2011, 'Nanoscale observation of the electronic and local structures of LiCoO ₂ thin film electrode by depth-resolved X-ray absorption spectroscopy', Journal of Physical Chemistry Letters, vol. 2, no. 20, pp. 2511-2514. https://doi.org/10.1021/jz2011226

Takamatsu, Daiko ; Nakatsutsumi, Takayuki ; Mori, Shinichiro ; Orikasa, Yuki ; Mogi, Masato ; Yamashige, Hisao ; Sato, Kenji ; Fujimoto, Takahiro ; Takanashi, Yu ; Murayama, Haruno ; Oishi, Masatsugu ; Tanida, Hajime ; Uruga, Tomoya ; Arai, Hajime ; Uchimoto, Yoshiharu ; Ogumi, Zempachi. / Nanoscale observation of the electronic and local structures of LiCoO ₂ thin film electrode by depth-resolved X-ray absorption spectroscopy. In: Journal of Physical Chemistry Letters. 2011 ; Vol. 2, No. 20. pp. 2511-2514.

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abstract = "The electronic and local structural changes during electrochemical delithiation processes occurring at the electrode/electrolyte interface of LiCoO2 thin film electrode prepared by pulsed laser deposition were clarified by using depth-resolved X-ray absorption spectroscopy technique. We successfully obtained detailed microstructural information around the Li 1-xCoO2 electrode surface with a depth resolution of ca. 3 nm using a spectro-electrochemical cell. Our results revealed a remarkable increase in the local distortions at the Li1-xCoO2 surface after charging, and the distortions extended to the bulk of Li 1-xCoO2. Such unprecedented local distortions might be attributable to the marked deterioration of the electrodes.",

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AU - Mogi, Masato

AU - Yamashige, Hisao

AU - Sato, Kenji

AU - Fujimoto, Takahiro

AU - Takanashi, Yu

AU - Murayama, Haruno

AU - Oishi, Masatsugu

AU - Tanida, Hajime

AU - Uruga, Tomoya

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AB - The electronic and local structural changes during electrochemical delithiation processes occurring at the electrode/electrolyte interface of LiCoO2 thin film electrode prepared by pulsed laser deposition were clarified by using depth-resolved X-ray absorption spectroscopy technique. We successfully obtained detailed microstructural information around the Li 1-xCoO2 electrode surface with a depth resolution of ca. 3 nm using a spectro-electrochemical cell. Our results revealed a remarkable increase in the local distortions at the Li1-xCoO2 surface after charging, and the distortions extended to the bulk of Li 1-xCoO2. Such unprecedented local distortions might be attributable to the marked deterioration of the electrodes.

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