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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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)