摘要
电致变色技术因其可控的光学调制特性,在智能窗和柔性电子器件等领域展现出重要应用前景。然而,单一材料体系的电致变色器件因有机材料稳定性不足和无机组分柔性差等问题,难以兼顾宽光谱调控、良好柔韧性和长循环寿命等性能要求。本研究提出了一种无机-有机复合策略,采用喷涂工艺构建多孔氧化钨钼电致变色层,通过钼元素掺杂调控WO_(3)晶格结构以提升材料电化学性能。试验结果表明,其独特结构有效促进离子传输与电荷转移,并且与柔性衬底具有良好的适配性。基于氧化钨钼电致变色层和聚苯胺对电极层组装的器件,在720 nm处实现46.1%的最大光学调制幅度,着色效率高达168.9 cm^(2)/C,并经过4000次循环后保持87.7%的初始光学调制性能。本研究获得的性能优异的无机-有机复合电致变色器件,为开发高性能柔性电致变色器件提供了新思路。
Electrochromic technology exhibits significant application prospects in fields such as smart windows and flexible electronic devices due to its controllable optical modulation characteristics.However,electrochromic devices based on single material systems struggle to simultaneously meet performance requirements such as broad-spectrum regulation,good flexibility,and long cycle life due to issues like insufficient stability of organic materials and poor flexibility of inorganic components.This study proposes an inorganic-organic composite strategy,constructing a porous tungsten molybdenum oxide electrochromic layer via a spraying process.Molybdenum element doping was employed to regulate the WO_(3)lattice structure,thereby enhancing the material's electrochemical performance.Experimental results indicate that its unique structure effectively promotes ion transport and charge transfer while demonstrating good compatibility with flexible substrates.The device assembled using the tungsten molybdenum oxide electrochromic layer and a polyaniline counter electrode layer achieved a maximum optical modulation amplitude of 46.1%at 720 nm,a high coloration efficiency of 168.9 cm²/C,and retained 87.7%of its initial optical modulation performance after 4000 cycles.The high-performance inorganic-organic composite electrochromic device obtained in this research provides a new approach for developing high-performance flexible electrochromic devices.
作者
丁秉强
李耀刚
李克睿
DING Bingqiang;LI Yaogang;LI Kerui(College of Materials Science and Engineering,Donghua University,Shanghai,China)
出处
《中国钨业》
2025年第3期80-86,I0001,共8页
China Tungsten Industry
基金
国家重点研发计划(2022YFB3902700)。
关键词
氧化钨钼
柔性电致变色器件
固态聚合物电解质
深共晶溶剂
tungsten molybdenum oxide
flexible electrochromic device
solid polymer electrolyte
deep eutectic solvent
