三氧化钨/聚(3,4-乙烯二氧噻吩)核壳纳米线阵列薄膜的制备与电致变色性能  

Synthesis and electrochromic performance of Tungsten Trioxide/Poly(3,4-ethylenedioxythiophene)core-shell nanowire array films

作　　者：陈传胜[1] 李熙瑞 张青[3] CHEN Chuan-sheng;LI Xi-rui;ZHANG Qing(Department of Architectural Engineering,Anhui Vocational and Technical College,Hefei 230011,China;Anhui Jincheng Composite Materials Co.Ltd,Hefei 231131,China;Department of Intelligent Manufacturing,Anhui Vocational and Technical College,Hefei 230011,China)

机构地区：[1]安徽职业技术学院建筑工程学院,安徽合肥230011 [2]安徽金诚复合材料有限公司,安徽合肥231131 [3]安徽职业技术学院智能制造学院,安徽合肥230011

出　　处：《化学研究与应用》2025年第2期401-409,共9页Chemical Research and Application

基　　金：安徽省高等学校科学研究项目(2022AH040282)资助。

摘　　要：本文采用溶剂热和电沉积相结合的方法制备了三氧化钨/聚(3,4-乙烯二氧噻吩)(WO_(3)/PEDOT)核壳纳米线阵列薄膜,对实验样品进行表面结构表征、电化学性能测试和电致变色性能测试。测试显示WO_(3)/PEDOT纳米线阵列直径约为15-55 nm。透射电子显微镜表征结果证实WO_(3)/PEDOT纳米线阵列薄膜为核壳结构,X射线衍射花样和拉曼光谱证明核壳结构为六方相的WO_(3)核与非晶PEDOT薄壳层所组成。循环伏安曲线显示WO_(3)/PEDOT纳米线的电化学反应为扩散控制过程。WO_(3)/PEDOT纳米线在波长为633 nm处获得了对比度为78.2%、着色时间为4.6 s、褪色时间为2.0 s以及着色效率为78.6 cm^(2)/C的优异特性,由于核与壳层结构之间的协同作用,使得复合结构的变色响应速度和循环稳定性获得了显著的提升,在智能显示、节能窗等领域具有潜在的应用前景。In this paper,tungsten trioxide(W03)subcrystalline layers were synthesized by magnetron sputtering,W03 nanowire films were prepared by solvothermal method and tungsten trioxide/poly(3,4-ethylenedioxythiophene)(WO_(3)/PEDOT)core-shell nanowire array films were prepared by electrochemical deposition.The surface structure,electrochemical properties and electrochromic properties were investigated.Results reveal that the diameter of WO_(3)/PEDOT nanowire array is about 15-55 nm.The core-shell structure of WO_(3)/PEDOT nanowire array films is proved by transmission electron microscope.X-ray diffraction and Raman spectra show that WO_(3)is hexagonal phase and PEDOT layer is amorphous.The cyclic voltammetry curves show that the electrochemical reaction of WO3/PEDOT nanowires is a diffusion-controlled process.At a wavelength of 633 nm,the WO_(3)/PEDOT nanowires exhibit a contrast ratio of 78.2%,with a coloring time of 4.6 s,a fading time of 2.0 s,and a coloring efficiency of 78.6 cm^(2)/C,which is significantly shorter than the response time of WO_(3)nanowires array.

关 键 词：三氧化钨 聚(3 4-乙烯二氧噻吩) 核壳纳米结构 溶剂热 电致变色 

分 类 号：O614.6[理学—无机化学]