Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Enhanced Electrochromic Performance of Viologen Ion Gel Nanofibers

비올로겐 이온겔 나노섬유의 전기변색 특성 연구

  • Choi, Jin Hui (Department of Organic Material Science and Engineering, School of Chemical Engineering, Pusan National University) ;
  • Eom, Yu Seon (Department of Organic Material Science and Engineering, School of Chemical Engineering, Pusan National University) ;
  • Park, Jong S. (Department of Organic Material Science and Engineering, School of Chemical Engineering, Pusan National University)
  • 최진희 (부산대학교 응용화학공학부 유기소재시스템공학과) ;
  • 엄유선 (부산대학교 응용화학공학부 유기소재시스템공학과) ;
  • 박종승 (부산대학교 응용화학공학부 유기소재시스템공학과)
  • Received : 2021.05.22
  • Accepted : 2021.06.20
  • Published : 2021.06.30
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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.

Keywords

Acknowledgement

이 성과는 한국연구재단의 지원을 받아 수행된 연구임(No. 2019R1A2C108866213).

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