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.
Original language | English |
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Pages (from-to) | 2511-2514 |
Number of pages | 4 |
Journal | Journal of Physical Chemistry Letters |
Volume | 2 |
Issue number | 20 |
DOIs | |
Publication status | Published - Oct 20 2011 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Physical and Theoretical Chemistry