高等学校化学学报 ›› 2021, Vol. 42 ›› Issue (9): 2996.doi: 10.7503/cjcu20210131

• 材料化学 • 上一篇    

WO3/PANI核壳结构反蛋白石薄膜的电致变色性能

江莉琪1, 危科1, 王浪1, 肖厚地2, 杨九香1, 胡执一1, 刘婧1, 李昱1(), 吕明云2(), 苏宝连1   

  1. 1.武汉理工大学材料复合新技术国家重点实验室, 武汉 430070
    2.北京航空航天大学航空科学与工程学院, 北京 100191
  • 收稿日期:2021-03-01 出版日期:2021-09-10 发布日期:2021-09-08
  • 通讯作者: 李昱,吕明云 E-mail:yu.li@whut.edu.cn;lv503@buaa.edu.cn
  • 基金资助:
    国家重点研发计划项目(2016YFA0202602);国家自然科学基金(U1663225)

Electrochromic Property of the WO3/PANI Core-Shell Inverse Opal Structure Film

JIANG Liqi1, WEI Ke1, WANG Lang1, XIAO Houdi2, YANG Jiuxiang1, HU Zhiyi1, LIU Jing1, LI Yu1(), LYU Mingyun2(), SU Baolian1   

  1. 1.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China
    2.School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China
  • Received:2021-03-01 Online:2021-09-10 Published:2021-09-08
  • Contact: LI Yu,LYU Mingyun E-mail:yu.li@whut.edu.cn;lv503@buaa.edu.cn
  • Supported by:
    the National Key Research and Development Program of China(2016YFA0202602);the National Natural Science Foundation of China(UI663225)

摘要:

采用连续离子层吸附法在反蛋白石结构三氧化钨(IO-WO3)薄膜表面引入导电聚合物聚苯胺(PANI)层, 制备了独特的WO3/PANI核壳结构反蛋白石薄膜(IO-WO3/PANI). 探究了IO-WO3/PANI薄膜的形貌、 组成和电化学行为. 结果表明, 当电位扫描范围为-0.6~1.0 V时, IO-WO3/PANI复合膜在不同电压状态下会呈现出4种不同的颜色, 分别为蓝色(1.0 V)、 绿色(0.2 V)、 浅绿色(0 V)和蓝紫色(-0.6 V). 与IO-WO3薄膜相比, IO-WO3/PANI复合膜的电致变色性能显著提高, 其着色与退色响应时间分别为3.8和6.14 s, 变色效率(CE)值为201.1 cm2/C. 电致变色性能的改善主要归因于WO3与PANI形成给体-受体体系和核壳反蛋白石等级孔结构, 使得离子快速扩散, 并为电荷转移反应提供更大的表面积. 研究结果表明, IO-WO3/PANI核壳结构反蛋白石薄膜是一种潜在的多色电致变色材料, 具有广阔的应用前景.

关键词: 氧化钨, 多色电致变色, 反蛋白石结构, 有机/无机杂化材料

Abstract:

A conductive polymer polyaniline(PANI) layer was introduced on the surface of the inverse opal structure tungsten trioxide(IO-WO3) film by the successive ionic layer adsorption and reaction, then a unique core-shell inverse opal structure WO3/PANI(IO-WO3/PANI) film was fabricated. The morphology, composition, and electrochemical behavior of the IO-WO3/PANI film were studied and compared with the IO-WO3 film. When the potential scan ranged from -0.6 V to 1.0 V, the IO-WO3/PANI composite film showed different colors under different voltage states, namely blue(1.0 V), green(0.2 V), light green(0 V) and blue-violet (-0.6 V). Compared with the IO-WO3 film, the electrochromic performance of the IO-WO3/PANI film is signi-ficantly improved. The coloring and fading response times are 3.8 and 6.14 s, respectively, and the color change efficiency(CE) value is 201.1 cm2/C. The improvement of electrochromic performance is mainly attri- buted to the formation of the donor-acceptor system and the hierarchically porous structure in the core-shell inverse opal, which enable rapid ion diffusion and provide a larger surface area for charge transfer reactions. The results show that the IO-WO3/PANI core-shell inverse opal film is a potential multicolor electrochromic material and has broad application prospects in the future.

Key words: WO3, Multicolor electrochromic, Inverse opal structure, Organic/inorganic hybrid material

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