W18O49/PET-ITO柔性电致变色薄膜制备及其变色性能

doi:10.12034/j.issn.1009-606X.218218

过程工程学报 ›› 2019, Vol. 19 ›› Issue (2): 400-406.DOI: 10.12034/j.issn.1009-606X.218218

W18O49/PET-ITO柔性电致变色薄膜制备及其变色性能

孙江波^1,2，张杰²，王迪²，陆江银^1*，崔彦斌^2*

1. 新疆大学化学化工学院，石油天然气精细化工教育部重点实验室，新疆乌鲁木齐 830046 2. 中国科学院过程工程研究所多相复杂系统国家重点实验室，北京 100190

收稿日期:2018-05-30 修回日期:2018-07-03 出版日期:2019-04-22 发布日期:2019-04-18
通讯作者: 陆江银 jiangyinlu6410@163.com
基金资助:
中国科学院过程工程研究所介尺度科学中心创新基金;多相复杂系统国家重点实验室自主研究课题

Preparation of W18O49/PET-ITO flexible electrochromic film and its performance

Jiangbo SUN^1,2, Jie ZHANG², Di WANG², Jiangyin LU^1*, Yanbin CUI^2*

1. Key Laboratory of Oil & Gas Fine Chemicals, Ministry of Education, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China 2. State Key Laboratory of Multi-phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

Received:2018-05-30 Revised:2018-07-03 Online:2019-04-22 Published:2019-04-18

摘要/Abstract

摘要： 采用溶剂热法制备W18O49纳米线电致变色材料，喷涂在聚对苯二甲酸乙二醇酯?氧化铟锡(PET?ITO)(方阻35 Ω)柔性透明导电基底上得到柔性电致变色薄膜。采用X射线衍射仪、扫描电子显微镜、高分辨场透射电子显微镜和X射线光电子能谱对W18O49的微观结构和价态等进行表征，用电化学工作站与紫外?可见光分光光度计对W18O49/PET?ITO柔性电致变色薄膜的光学调制范围、响应时间和循环稳定性等进行了表征和分析。结果表明，光谱扫描波长?=633 nm时，W18O49/PET?ITO柔性电致变色薄膜的光学调制范围ΔT=23%。薄膜透光率变化90%时，着色和褪色时间分别为12.8和10.6 s。W18O49/PET?ITO柔性电致变色薄膜具有优异的循环稳定性，连续着色褪色循环3000 s薄膜透光率仍达80.9%。

关键词: W18O49纳米线, PET-ITO, 溶剂热, 电致变色, 柔性薄膜, 循环稳定性

Abstract: Due to the limited energy resource on earth, energy saving is critical for the sustainable development. Therefore, ways to reduce energy consumption and energy-saving materials are highly desirable. The optical properties (coloring/bleaching) of electrochromic (EC) materials can be changed by a reversible electrochemical process. EC materials are suited to energy saving because the amount of light and heat entering building or automobile can be controlled by changing the transmittance of light. EC materials have shown widespread applications, such as smart windows for energy-saving buildings, low-power displays, self-dimming rear mirrors, electrochromic e-skins, etc. So far, many inorganic and organic materials have been used as EC materials, such as transition metal oxides, Prussian blue, viologens, conducting polymers, and so on. Among these materials, tungsten oxide has attracted considerable attention due to its multiple oxidation states. In this work, W18O49 nanowire was prepared by solvothermal method and sprayed on a PET?ITO (35 Ω square) flexible transparent conductive substrate to obtain W18O49/PET?ITO flexible EC film. The microstructures and valence states of W18O49 nanowire were characterized by XRD, SEM, high-resolution transmission electron microscopy and XPS. The optical modulation range, response time and cycle stability of W18O49/PET?ITO flexible EC film were characterized and analyzed by electrochemical workstation and UV?visible spectrophotometer. The experimental results indicated that the optical modulation range (ΔT) of W18O49/PET?ITO flexible EC film was 23% when the EC film was scanned at the wavelength of 633 nm. The time for colored and bleached switching of W18O49/PET?ITO flexible EC film were 12.8 and 10.6 s when the optical transmittance change of EC film was 90%. Moreover, the W18O49/PET?ITO flexible EC film had excellent cycle stability. The optical transmittance changes of W18O49/PET?ITO flexible EC film was still high (80.9%) when the film was continuous switched between colored and bleached state for 3000 s.

Key words: W18O49 nanowires, PET-ITO, solvothermal, electrochromic, flexible film, cycle stability

孙江波张杰王迪陆江银崔彦斌. W18O49/PET-ITO柔性电致变色薄膜制备及其变色性能[J]. 过程工程学报, 2019, 19(2): 400-406.

Jiangbo SUN Jie ZHANG Di WANG Jiangyin LU Yanbin CUI. Preparation of W18O49/PET-ITO flexible electrochromic film and its performance[J]. Chin. J. Process Eng., 2019, 19(2): 400-406.

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W18O49/PET-ITO柔性电致变色薄膜制备及其变色性能

Preparation of W18O49/PET-ITO flexible electrochromic film and its performance

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