无机复合纳米材料电致变色薄膜研究进展

Progress in Inorganic Composite Nanomaterial Electrochromic Film

开发循环稳定性好,着/褪色响应快,变色效率高的薄膜是电致变色材料的研究重点。与有机材料相比,无机材料的稳定性更强,实用性更好。通过构筑高孔隙率、低电阻率、大比表面积和多活性位点的微纳结构活性薄膜,能有效提高电致变色性能。本文阐述了电致变色器件的变色原理,详细介绍了介孔结构、纳米阵列结构及核壳结构等特殊微纳结构无机电致变色薄膜的性能优势和发展现状,进而探讨了微纳结构薄膜存在的瓶颈问题和发展趋势,有利于精准拓展研究思路,对推动无机电致变材料的发展与应用具有指导作用。

The development of films with good cycle stability,fast coloring/fading response and high coloring efficiency is research focus of electrochromic materials.Compared with the organic materials,inorganic materials have stronger stability and better practicability.The electrochromic properties can be effectively improved by constructing micro-nano structural active films with high porosity,low resistivity,large specific surface area and multiple active sites.In this paper,the principle of electrochromic devices is described.The performance advantages and development status of inorganic electrochromic thin films with special micro-nano structures such as mesoporous structure,nano-array structure and core-shell structure are introduced in detail.Furthermore,the bottleneck problems and future research and development trends of micro-nanostructure thin films are discussed.It is helpful to expand the research ideas accurately and play a guiding role in promoting the development and application of inorganic electrochromic materials.