Eyovge Cavit, Deenen Cristian S, Ruiz-Zepeda Francisco, Bartling Stephan, Smirnov Yury, Morales-Masis Monica, Susarrey-Arce Arturo, Gardeniers Han
Mesoscale Chemical Systems, MESA+ Institute, University of Twente, Drienerlolaan 5, 7522 NB Enschede, the Netherlands.
Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia.
ACS Appl Nano Mater. 2021 Aug 27;4(8):8600-8610. doi: 10.1021/acsanm.1c02231. Epub 2021 Aug 16.
Co-axial electrospinning was applied for the structuring of non-woven webs of TiO nanofibers loaded with Ag, Au, and CuO nanoparticles. The composite layers were tested in an electrochromic half-cell assembly. A clear correlation between the nanoparticle composition and electrochromic effect in the nanofibrous composite is observed: TiO loaded with Ag reveals a black-brown color, Au shows a dark-blue color, and CuO shows a dark-green color. For electrochromic applications, the Au/TiO layer is the most promising choice, with a color modulation time of 6 s, transmittance modulation of 40%, coloration efficiency of 20 cm/C, areal capacitance of 300 F/cm, and cyclic stability of over 1000 cycles in an 18 h period. In this study, an unexplored path for the rational design of TiO-based electrochromic device is offered with unique color-switching and optical efficiency gained by the fibrous layer. It is also foreseen that co-axial electrospinning can be an alternative nanofabrication technique for smart colored windows.
采用同轴静电纺丝法制备了负载银、金和氧化铜纳米颗粒的二氧化钛纳米纤维非织造网。在电致变色半电池组件中对复合层进行了测试。观察到纳米颗粒组成与纳米纤维复合材料中的电致变色效应之间存在明显的相关性：负载银的二氧化钛呈现黑褐色，金呈现深蓝色，氧化铜呈现深绿色。对于电致变色应用，金/二氧化钛层是最有前景的选择，其颜色调制时间为6秒，透过率调制为40%，着色效率为20 cm/C，面积电容为300 F/cm，在18小时内循环稳定性超过1000次循环。在本研究中，通过纤维层获得独特的颜色切换和光学效率，为基于二氧化钛的电致变色器件的合理设计提供了一条未探索的途径。还可以预见，同轴静电纺丝可以成为智能彩色窗户的一种替代纳米制造技术。
