文献类型：期刊文献

英文题名：Titanium dioxide/tungsten trioxide nanoarrays film for high electrochromic performance

作者：Li, Yajun[1];Liu, Zhifeng[1];Zhao, Lei[2];Cui, Ting[1];Wang, Bo[1];Guo, Keying[1];Han, Jianhua[1]

第一作者：Li, Yajun

通讯作者：Liu, ZF[1]

机构：[1]Tianjin Chengjian Univ, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China;[2]Xinxiang Univ, Sch Civil Engn & Achitecture, Xinxiang 453003, Peoples R China

第一机构：Tianjin Chengjian Univ, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China

通讯机构：[1]corresponding author), Tianjin Chengjian Univ, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China.

年份：2015

卷号：173

起止页码：117-123

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20152100878485);Scopus(收录号：2-s2.0-84929619296);WOS:【SCI-EXPANDED(收录号:WOS:000356674900015)】；

基金：The authors gratefully acknowledge financial support from Technology Development Foundation Plan Project of Tianjin Colleges (No. 20140309) and State Key Laboratory of Heavy Oil Processing (No. SKLHOP201505).

语种：英文

外文关键词：electrochromism; tungsten trioxide; titanium dioxide; core/shell structure; nanoarrays

摘要：A novel type of TiO2/WO3 core/shell nanoarrays film as a good electrode material with superior performance has been successfully synthesized by hydrothermal and sol-gel method. The advantage of core/shell structure and the electrochromic behavior of the film have been discussed. The effects of annealing temperature and dipping times on the structure, optical modulation, electrochromic property and cycle stability of the film were also investigated in detail. The results indicate that the TiO2/WO3 core/shell nanoarrays with two dipping times under 250 degrees C have significant optical modulation (vary between 16-73% in 400-700 nm range) and fast Li1+ diffusion rate (with 1.4 x 10 (10)cm(2)/s Li1+ diffusion coefficients). The improved electrochromic properties are mainly attributed to the core/shell structure and the optimization function of TiO2, which have high surface area, good contact with the electrolyte solution and fewer defects, leading to faster Li1+ diffusion rate and better electrochemical cycling stability. The new structure of TiO2/WO3, producing the best possible advantage of WO3 and TiO2, can be regarded as an ideal electrochromic material with high practical value. (C) 2015 Elsevier Ltd. All rights reserved.