Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
81030 | Solar Energy Materials and Solar Cells | 2008 | 5 Pages |
Abstract
Transparent CeO2 thin solid films, used as ion storage layer in electrochromic devices were prepared by the sol–gel method using an alkoxide route combined with the dip-coating technique. The precursor sol was prepared from a mixture of cerium (IV) methoxyethoxide in anhydrous 2-butanol. Electrochemical Li+ intercalation/deintercalation was performed by cyclic voltammetry and the results indicate that the CeO2/LiClO4 system is electrochemically reversible. The total inserted/extracted charge of the CeO2 film was determined by chronoamperometric measurements, which showed an ion storage capacity of ∼14 mC/cm2. The solid-state diffusion of lithium ion into the CeO2 thin films was investigated by electrochemical impedance spectroscopy.
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Authors
César O. Avellaneda, Marcos A.C. Berton, Luis O.S. Bulhões,