Nanoscale Observation of the Electronic and Local Structures of LiCoO2 Thin Film Electrode by Depth-Resolved X-ray Absorption Spectroscopy
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...
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| Veröffentlicht in: | The journal of physical chemistry letters 2011-10, Vol.2 (20), p.2511-2514 |
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| container_title | The journal of physical chemistry letters |
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| creator | 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 |
| description | 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 Li1–x CoO2 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–x CoO2 surface after charging, and the distortions extended to the bulk of Li1–x CoO2. Such unprecedented local distortions might be attributable to the marked deterioration of the electrodes. |
| doi_str_mv | 10.1021/jz2011226 |
| format | Article |
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Phys. Chem. Lett</addtitle><date>2011-10-20</date><risdate>2011</risdate><volume>2</volume><issue>20</issue><spage>2511</spage><epage>2514</epage><pages>2511-2514</pages><issn>1948-7185</issn><eissn>1948-7185</eissn><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 Li1–x CoO2 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–x CoO2 surface after charging, and the distortions extended to the bulk of Li1–x CoO2. Such unprecedented local distortions might be attributable to the marked deterioration of the electrodes.</abstract><pub>American Chemical Society</pub><doi>10.1021/jz2011226</doi><tpages>4</tpages></addata></record> |
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| source | American Chemical Society Journals |
| subjects | Energy Conversion and Storage |
| title | Nanoscale Observation of the Electronic and Local Structures of LiCoO2 Thin Film Electrode by Depth-Resolved X-ray Absorption Spectroscopy |
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