摘要
针对传统电致变色薄膜制备工艺复杂、成本高及规模化制备困难的问题,本研究采用液相法合成氧化钨(WO_(3))纳米颗粒,通过刮涂、旋涂以及喷涂工艺制备大面积电致变色薄膜,并通过X射线衍射(XRD)分析、扫描电镜(SEM)及电化学测试(循环伏安法、交流阻抗谱法等)探究不同工艺对电致变色薄膜结构和性能的影响。结果表明,基于异丙醇溶剂的喷涂工艺制备的WO_(3)薄膜呈现均匀的多孔纳米结构(晶粒尺寸50~100 nm),具有较低的电荷转移电阻,透光率调制范围达24%以上,在200次循环后电流响应保持率达85%。该研究通过优化溶剂体系与湿化学工艺,实现了低成本、高性能电致变色薄膜的可控制备,为智能窗的规模化应用提供了理论基础。
To address the issues of complex preparation processes,high cost,and difficulty in large-scale fabrication of traditional electrochromic films,this study synthesized tungsten oxide(WO_(3))nanoparticles using a liquid-phase method.Large-area electrochromic films were prepared via doctor-blading,spin-coating,and spray coating.The effects of different processes on the structure and performance of the electrochromic films were investigated through X-ray diffraction(XRD)analysis,scanning electron microscopy(SEM),and electrochemical testing(cyclic voltammetry,electrochemical impedance spectroscopy,etc.).The results indicate that WO_(3) films prepared by the spray coating process using isopropanol solvent exhibit a uniform porous nanostructure(grain size 50-100 nm),low charge transfer resistance,a transmittance modulation range exceeding 24%,and a current response retention rate of 85%after 200 cycles.By optimizing the solvent system and wet chemical processes,this study achieved the controllable preparation of low-cost,high-performance electrochromic films,providing a theoretical basis for the large-scale application of smart windows.
作者
季远祺
胡奥迪
徐兵
周国龙
郭子奇
陈经纬
JI Yuanqi;HU Aodi;XU Bing;ZHOU Guolong;GUO Ziqi;CHEN Jingwei(School of Materials Science and Engineering,Ocean University of China,Qingdao 266404,Shandong,China)
出处
《中国钨业》
2025年第3期87-93,I0001,共8页
China Tungsten Industry
基金
国家自然科学基金(52202320)。
关键词
电致变色
氧化钨
液相法
喷涂
智能窗
electrochromism
tungsten oxide
liquid-phase method
spray coating
smart window
