Electrochromic properties of lithium doped WO3 films prepared by the sol-gel process

被引：38
|
作者：
Avellaneda, CO [1 ]
Bueno, PR [1 ]
Faria, RC [1 ]
Bulhoes, LOS [1 ]
机构：
[1] Univ Fed Sao Carlos, Dept Quim, LIEC, BR-13565905 Sao Carlos, SP, Brazil
来源：
ELECTROCHIMICA ACTA | 2001年 / 46卷 / 13-14期
基金：
巴西圣保罗研究基金会;
关键词：
electrochromism; tungsten oxide; microbalance;
D O I：
10.1016/S0013-4686(01)00372-3
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The electrochemical responses of amorphous thin films of lithium doped tungsten trioxide (LixWO3) prepared by the sol-gel method were studied. The electrode mass change in the oxide films during cyclic voltammetry and chronoamperometry measurements was evaluated with electrochemical quartz crystal microbalance (EQCM). The electrode mass change and electrochemical performances depend on the lithium doping level. Higher lithium doping levels lead to better electrochemical performances and to higher electrode mass changes in the insertion- deinsertion process. The electrochromic properties of the films investigated in situ using a spectroelectrochemical method are in agreement with EQCM measurements. The bleaching process in the lithium doped film was complete whereas in pure WO3 films a residual coloration was observed. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1977 / 1981
页数：5
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