掺杂无机填料是提高凝胶电解质离子电导率的重要手段。利用SiO₂纳米球掺杂的方法制备了高离子电导率的芳纶基凝胶电解质，通过XRD、SEM、EIS等手段对不同掺杂量下的芳纶基凝胶电解质的光学性能及电化学性能进行了表征，进一步研究了其在电致变色器件中的应用与性能。结果表明，SiO₂纳米球质量分数为9%时，芳纶基凝胶电解质的离子电导率显著提高，由其作为电解质层组装的近红外电致变色器件具有更快的响应速度和更高的着色效率。该研究为纳米改性凝胶电解质在近红外电致变色器件的应用提供了新的思路。

Doping with inorganic filler materials is an important way to improve the ionic conductivity of gel electrolyte.An aramid-based gel electrolyte with high ionic conductivity is prepared by doping with SiO₂ nanospheres.Optical and electrochemical properties of the aramid-based gel electrolyte samples with different doping amounts of SiO₂ nanospheres are examined by XRD,SEM and EIS analysis.The application and performances of these samples in electrochromic devices (ECDs) are further studied.The results show that the ionic conductivity of aramid-based gel electrolyte reaches a maximum value when the concentration of SiO₂ nanospheres in electrolyte samples is 9wt%,and the as-fabricated ECDs are endowed with shortened switching time and improved coloration efficiency.This study provides a new paradigm for the application of nano-modified gel electrolytes in near-infrared ECDs.

杨旭雯(1994-),女,硕士研究生,研究方向为电致变色,xwyang2017@sinano.ac.cn