Characterization of an all Sol-Gel Electrochromic Device WO3/Ormolyte/CeO2-TiO2 |
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| Authors: | César O. Avellaneda Karim Dahmouche Luis O.S. Bulhões Agnieszka Pawlicka |
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| Affiliation: | (1) Departamento de Física e Ciência dos Materiais, Instituto de Física de São Carlos, Universidade de São Paulo, C.P. 369, CEP 13560-970 São Carlos-SP, Brazil;(2) LIEC-Departamento de Química, Universidade Federal de São Carlos, C.P. 676, CEP13565-905 São Carlos-SP, Brazil;(3) Instituto de Química, UNESP, Rua. Pr. Francisco Degni S/N, 14800-900 Araraquara-SP, Brazil;(4) Departamento de Físico-Química, Instituto de Química de São Carlos, Universidade de São Paulo, C.P. 780, CEP 13560-970 São Carlos-SP, Brazil |
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| Abstract: | Electrochemical lithium intercalation in thin films of CeO2-TiO2 and WO3, prepared by the sol-gel technique was investigated with cyclic voltammetry and spectroelectrochemical techniques in propylene carbonate solutions. A solid state system having the configuration WO3/Ormolyte/CeO2-TiO2 has been assembled. The solid electrolyte, an organically modified electrolyte (ormolyte), was prepared with different [O]/[Li] ratios. The transmittance variation of this system during a potentiostatic step from –0.7 V to 0.8 V was about 35% at 550 nm. |
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| Keywords: | electrochromic devices WO3 CeO2-TiO2 hybrid materials-ormolyte |
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