Changes in electronic structure by Li ion deintercalation in LiCoO2 from cobalt L-edge and oxygen K-edge XANES.
Cobalt L-edge and oxygen K-edge X-ray Absorption Near Edge Structure (XANES) investigated change in electronic structure by electrochemical lithium ion de-intercalation in LiCoO2. The Co L-edge XANES of Li(1-x)CoO2 did not show any chemical shift even at high x value. The oxygen K-edge XANES of Li(1-x)CoO2 indicated that the holes compensating the lithium ion deintercalation are located primarily in the oxygen 2p states rather than in the Co 3d states.
Uchimoto
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Y
Department of Fundamental Energy Science, Graduate School of Energy Science, Kyoto University, Japan. yuchimot@o.cc.titech.ac.jp
Sawada
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H
Yao
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T