Changes in the Electronic Structure of Chemically Deintercalated LiCoO[sub 2]

1 January 1999

journal article
Published by The Electrochemical Society in Electrochemical and Solid-State Letters

Vol. 3 (9) , 410-412
https://doi.org/10.1149/1.1391162

Abstract

We studied the changes in the electronic structure of induced by deintercalation using and X‐ray absorption spectroscopy. The mean probing depth of this technique is . The results were analyzed using atomic multiplet and band structure calculations. The spectrum shows that the ions in are in a trivalent low‐spin state. The spectra of deintercalated show only minor changes as a function of concentration. The absence of changes indicates that the ions remain mostly unaffected by deintercalation. In particular, the ions in deintercalated are not oxidized to a tetravalent state as normally assumed. The spectra of deintercalated show an increase in the absorption intensity below threshold; this absorption increase indicates that the ions in are reduced upon deintercalation. ©2000 The Electrochemical Society

Keywords

ELECTRONIC STRUCTURE

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