Enhanced Electrochromic Performance of Viologen Ion Gel Nanofibers
Vol. 58, No. 3, pp. 126-131,
Jun. 2021
10.12772/TSE.2021.58.126
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Abstract
Electrochromism represents a reversible spectral or optical change owing to the
redox reaction on applying potential biases. Here, we present the enhanced electrochromic
properties by incorporating nanofiber webs prepared by electrospinning. The electrochromic
devices (ECDs) were fabricated by sandwiching the ion gel nanowebs, made up of
viologen and electrolyte, between two ITO glasses. The morphology of the nanofibers was
examined using a scanning electron microscope. More ionic liquid could be present
between randomly arranged nanofibers, resulting in increased ionic mobility. The fabricated
ECDs exhibited significantly enhanced electrochromic performances with short
switching speeds, high coloration efficiency, and long-term cyclic stability. Current results
demonstrate that electrospinning is a practical approach for high-performance electrochromic
devices.
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