聚多巴胺对氧化钨膜电致变色性能的影响探究  

Effect of polydopamine on electrochromic performance of WO_(3) films

作　　者：张旭 岳惠娟 卢迎习 杜芳林[1] ZHANG Xu;YUE Huijuan;LU Yingxi;DU Fanglin(College of Materials Science and Engineering, Qingdao University of Science and Technology,Qingdao 266042, China;State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University,Changchun 130012, China)

机构地区：[1]青岛科技大学材料科学与工程学院,山东青岛266042 [2]吉林大学化学学院,无机合成与制备化学国家重点实验室,长春130012

出　　处：《功能材料》2021年第6期6090-6096,共7页Journal of Functional Materials

基　　金：山东省软科学研究计划项目基金资助项目(J18KA011);国家自然科学基金青年科学基金资助项目(21704051);吉林大学无机合成与制备化学国家重点实验室开放课题资助项目(2019-19)。

摘　　要：通过恒定电压电化学沉积的方法在氧化铟锡(ITO)玻璃表面制备了氧化钨(WO3)与聚多巴胺(PDA)复合膜材料,研究了电解液中加入不同体积PDA对复合膜材料电致变色性能的影响。采用红外光谱仪(FT-IR),原子力显微镜(AFM),X射线光电子能谱(XPS),循环伏安(CV)等测试手段对复合膜材料的结构和性能进行了表征;将电化学工作站和紫外-可见吸收光谱联用,在-1.0~+0.8 V的电压范围内,对不同PDA添加量的复合膜材料的电致变色性能进行研究。研究结果表明,25 mL过钨酸电解液中含1.17μg/mL PDA时所制备的复合膜材料性能较为理想,透过率变化为77%,着色时间为7.0 s,褪色时间为5.5 s,运行1200周期后透过率变化为第1周期的80%,循环稳定性好,实现了从无色到蓝色,再恢复为无色的可逆颜色变化,可以作为将自修复性能引入WO_(3)电致变色复合膜的途径进行下一步研究。In order to study the effects of the addition of different volume PDA in electrolyte on the electrochromic properties of composite films,composite films constructed by tungsten oxide(WO3)and(PDA)are prepared by constant voltage electrochemical deposition on Indium tin oxide(ITO)substrate.The structure and properties of the composite films are characterized by infrared spectrometer(FT-TR),atomic force microscope(AFM),X-ray photoelectron spectroscopy(XPS)and cyclic voltammetry(CV).Electrochemical workstation and UV-visible absorption spectroscopy are used to investigate the electrochromic properties of composite films added different volume PDA in the voltage range of-1.0—+0.8 V.The results show that the as-prepared composite film in 25 mL pertungstic acid(PTA)electrolyte with 1.17μg/mL PDA has outstanding performance,for which the optical contrast is 77%,response time for coloring and bleaching are 7.0 and 5.5 s,respectively.After 1200 cycles,the optical contrast reaches 80%of the first cycle,implying its excellent cycle stability.This work may play a guidance role for introducing self-healing properties into WO_(3) electrochromic composite film.

关 键 词：氧化钨 聚多巴胺 电致变色 电化学沉积 

分 类 号：O614[理学—无机化学]