Electrochromic fibers enhanced by silica-reinforced composite electrolytes
Electrochromic(EC)fibers hold significant potential in applications such as smart clothing and adaptive camouflage.However,EC fibers still encounter challenges in practical applications,such as poor electrochemical stability and slow switching speed.The EC electrolyte was modified by SiO2 nanoparticles to address these issues.The optical and electrochemical properties of EC fibers fabricated with the modified electrolyte were investigated and discussed,and the influence of SiO2 nanoparticles on the stability of the color-changing material was analyzed.The results show that the coloration efficiency of SiO2-modified EC fibers reach 53.1 cm2/C,accompanied by a rapid switching speed(22.9/12.6 s).Even after 300 electrochemical cycles,the device maintained excellent coloration stability(optical reflective contrast maintains 58.3%of the initial value).Undoped SiO2-modified EC fibers show lower coloring efficiency(20.2 cm2/C)and slower switching speed(34.7/38.4 s).Additionally,the mechanical properties of EC fiber devices are excellent,demonstrating potential application value in wearable devices.
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