W_(18)O_(49)/ITO复合纳米薄膜的制备及其电致变色性能研究  

Preparation and Electrochromic Properties of ITO/W_(18)O_(49)Composite Nano Films

作　　者：袁聿峥 刘坚强[2] 贺梦冬 YUAN Yuzheng;LIU Jianqiang;He Mengdong(Central South University of Forestry and Technology,Changsha,Hunan 410004;Jiujiang University,Jiujiang,Jiangxi 332005,China)

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004 [2]九江学院理学院,江西九江332005

出　　处：《九江学院学报（自然科学版）》2022年第4期35-40,45,共7页Journal of Jiujiang University：Natural Science Edition

基　　金：企业横向课题-纳米氧化钨的可控合成关键技术研究和九江市留学回国人员成果转化项目-高性能透明隔热材料研发的研究成果之一。

摘　　要：电致变色材料的响应时间、调制幅度和着色率是重要的性能指标,如何进一步提高这些性能对于电致变色器件具有重要意义。文章采用溶剂热法制备单斜的W_(18)O_(49)纳米颗粒结构,通过球磨机械掺杂不同ITO量纳米粒子形成分散液,旋涂制备了具有优异电致变色性能的W_(18)O_(49)/ITO复合薄膜。实验测试表明,通过掺杂24%的ITO纳米颗粒,W_(18)O_(49)/ITO复合膜的着色和褪色时间分别提高到2.6秒和2.2秒。同时ITO纳米颗粒在W_(18)O_(49)复合薄膜中提高了27%的光调制幅度并具有良好的循环稳定性,这主要是它在W_(18)O_(49)复合薄膜中进一步减小了接触电导率,提高了电化学活特性。研究结果对于进一步提高电致变色器件性能具有指导意义。The response time,modulation amplitude and coloration rate were important performance indexes in the field of electrochromic materials.How to improve these properties was of great significance for electrochromic devices.In this paper,monoclinic W_(18)O_(49)nanoparticles were prepared by solvothermal method,and the dispersion solution was formed by mechanically doping ITO nanoparticles with different amounts by ball milling.The electrochromic W_(18)O_(49)/ITO composite films with excellent electrochromic properties were prepared by spin coating.The results showed that the coloring time and fading time of W_(18)O_(49)/ITO composite film were modulated to 2.6s and 2.2s respectively by doping 24%ITO nanoparticles.At the same time,the results also showed that ITO nanoparticles in W_(18)O_(49)composite films effectively improved the modulation amplitude to 36.9%with excellent cyclic stability,which was mainly because ITO nanoparticles further reduced the contact conductivity and electrochemical activity in W_(18)O_(49)composite films.The results of this study might guide for further improving the performance of electrochromic devices.

关 键 词：电致变色薄膜 W_(18)O_(49) 纳米颗粒 ITO 

分 类 号：G642.0[文化科学—高等教育学]