Building architecture of TiO2 nanocrystals embedded in amorphous WO3 films with improved electrochromic properties

被引：34

作者：

Hua, Chenzheng ^{[1
]}

Yuan, Guangzhong ^{[1
]}

Cheng, Ziqiang ^{[1
]}

Jiang, Hong ^{[2
,3
]}

Xu, Gang ^{[1
]}

Liu, Yong ^{[1
]}

Han, Gaorong ^{[1
]}

机构：

[1] Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

[2] State Key Lab Special Glass, Cheng Mai 571924, Peoples R China

[3] Hainan Univ, Haikou 570228, Hainan, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2019年 / 309卷

基金：

中国国家自然科学基金;

关键词：

Electrochromic property; Nanocrystalline TiO2-doped amorphous; WO3 thin films; One step solution synthesis; Interface effect; Faradaic charge; METAL-OXIDE NANOCRYSTALS; TUNGSTEN-OXIDE; THIN-FILMS; SMART WINDOWS; ANATASE TIO2; PERFORMANCE; COLORATION; NANOCOMPOSITE; ENHANCEMENT; DURABILITY;

D O I：

10.1016/j.electacta.2019.04.063

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

TiO2 nanocrystals embedded amorphous WO3 electrochromic films have been successfully fabricated with a facile one-step solution process. The structure and electrochromic properties of composite films were studied by transmission electron microscope, scanning electron microscope, X-ray diffraction, Raman spectroscopy, and electrochemical methods. The results show that anatase TiO2 nanocrystals with a size of about 5-10 nm were homogeneously embedded in the amorphous WO3 matrix (TiO2@WO3). Compared with pure WO3 film, the electrochromic performances of TiO2@WO3 are evidently enhanced. The further electrochemical analysis indicates that the enhancement may be mainly ascribed to the reconstruction of amorphous WO3 matrix with the emerging interfaces between nanocrystals and amorphous matrix. And the extremely high value of the coloration/bleaching reversibility is associated with the suppressing effect of TiO2 nanocrystals upon the Li+ trapping in WO3 matrix. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：354 / 361

页数：8

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