高性能三维纳米多孔氧化镍电致变色薄膜材料  

High performance three-dimensional nanoporous NiO as an electrochromic film material

作　　者：宋艳斌 张勇[2] 申碟 SONG Yan-bin;ZHANG Yong;SHEN Die(Henan building materials research and Design Institute Co.,Ltd,Zhengzhou 450000,China;School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]河南建筑材料研究设计院有限责任公司,河南郑州450000 [2]合肥工业大学材料科学与工程学院,安徽数合肥230009

出　　处：《化学研究与应用》2024年第4期721-727,共7页Chemical Research and Application

基　　金：国家自然科学基金面上项目(51372063,51402078)资助。

摘　　要：作为一种很有前景的电致变色材料,传统方法制备的氧化镍薄膜结构致密,对比度、响应速度等性能却并不理想。本研究首次通过结合电沉积与脱合金法制备了三维纳米多孔的氧化镍薄膜,通过对薄膜特征的检测和电致变色性能的测试,薄膜表现出较高的光学对比度(66.4%,550 nm基准)、较快的变色时间(褪色时间3.4 s,着色时间2.6 s)以及较高的着色效率(65 cm^(2)/C)。这些优异的性能可以归因于薄膜材料的三维纳米多孔结构,为离子提供大量的通道与嵌合位点。这些优点对氧化镍在电致变色器件领域的应用有重要意义。As a promising material for electrochromic applications,properties such as optical contrast and response speed are unsatisfactory attributed to the dense structure of Nickel oxide(NiO)film prepared by traditional methods.In this study,for the first time,three-dimensional nanoporous NiO film were fabricated through electrodeposition followed by dealloying.Textural characterization and electrochromic performances of the film were investigated.As-synthesized film exhibits large optical contrast(66.4%at 550 nm)and fast switching times for color changes(3.4 s for bleaching and 2.6 s for coloring)as well as high coloration efficiency(65 cm^(2)/C).These excellent electrochromic properties can be atributed to the obvious three-dimensional nanoporous structure,which provides voluminous amount of channels and insertion sites for ions.These advantages make NiO a potential candidate for electrochromic devices.

关 键 词：氧化镍 电致变色 脱合金 三维 纳米多孔 

分 类 号：O614.8[理学—无机化学]