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Optical Engineering

High-performance electrochromic device based on nanocellulose/polyaniline and nanocellulose/poly(3,4-ethylenedioxythiophene) composite thin films
Author(s): Sihang Zhang; Runfang Fu; Zoufei Du; Mengjin Jiang; Mi Zhou; Yingchun Gu; Sheng Chen
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Paper Abstract

With the development of nanotechnology, nanocomposite materials based on renewable resources are the focus of this research. Nanocellulose was prepared using sulfuric acid to swell cotton pulp, following with extensive ultrasonication. Nanocellulose/polyaniline (NC/PANI) and nanocellulose/poly(3,4-ethylenedioxythiophene) (NC/PEDOT) nanocomposites with core/shell structure were manufactured by in situ polymerization. The film-forming properties and electrochromic properties of PANI and PEDOT were significantly improved using the nanocellulose as matrix. NC/PANI and NC/PEDOT composite films were studied in single and dual electrochromic devices (ECDs). A viscous gel electrolyte (GE) was used in ECDs. The architectural design of single and dual device was ITO/NC-PANI/GE/ITO or ITO/NC-PEDOT/GE/ITO and ITO/NC-PANI/GE/NC-PEDOT/ITO, respectively. The dual ECD based on NC/PANI and NC/PEDOT composite films exhibited a higher color contrast (30.3%), shortest response time (1.5 s for bleaching and 1.9 s for coloring), largest coloration efficiency (241.6  C/cm2[/sup]), and best cycling stability (over 150 cycles) compared with the single devices.

Paper Details

Date Published: 6 July 2017
PDF: 8 pages
Opt. Eng. 56(7) 077101 doi: 10.1117/1.OE.56.7.077101
Published in: Optical Engineering Volume 56, Issue 7
Show Author Affiliations
Sihang Zhang, Sichuan Univ. (China)
Runfang Fu, Sichuan Univ. (China)
Zoufei Du, Sichuan Univ. (China)
Mengjin Jiang, Sichuan Univ. (China)
Mi Zhou, Sichuan Univ. (China)
Yingchun Gu, Sichuan Univ. (China)
Sheng Chen, Sichuan Univ. (China)

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