Porous WO3/reduced graphene oxide composite film with enhanced electrochromic properties

被引：46
作者：
Zhao, BoWen [1 ]
Lu, ShuJuan [1 ]
Zhang, Xin [1 ]
Wang, Hao [1 ]
Liu, JingBing [1 ]
Yan, Hui [1 ]
机构：
[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
来源：
IONICS | 2016年 / 22卷 / 02期
关键词：
Tungsten oxide; Graphene; Composite film; Electrochromic; THIN-FILMS; ITO FILMS; WO3; PERFORMANCE; STABILITY; PROGRESS;
D O I：
10.1007/s11581-015-1547-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The porous WO3/reduced graphene oxide (rGO) composite films are prepared on indium-tin oxide (ITO) glass by sol-gel method. The mixture sol combines peroxotungstic acid solution with rGO dispersion reduced by ethylene glycol (EG). The excessive EG and other organic additives are subsequently removed by annealing, which leads to the formation of porous structure. Compared with pure WO3 film, WO3/rGO composite film shows improved electrochromic performance because of enhanced double insertion/extraction of ions and electrons. It realizes a large optical modulation (64.2 % at 633 nm), fast switching speed (9.5 s for coloration and 4.5 s for bleaching), good cycling stability as well as reversibility.
引用
收藏
页码：261 / 267
页数：7
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