A facile nanoarchitectonics of electrochromic devices with poly(3, 4-ethylenedioxythiophene) and bioplastic composite

Kangyun Lee, Minsu Han, Goomin Kwon, Youngho Jeon, Jeonghun Kim, Jungmok You

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Recently, electrochromic devices (ECDs) have been exploited extensively for various applications, including energy-saving and display. However, it is still critical to develop lightweight, low-power, inexpensive, and eco-friendly ECDs. In this study, a novel ECD based on poly(3,4-ethylene dioxythiophene)(PEDOT)/2,2,6,6-tetramethylpiperidine-1-oxy-oxidized cellulose nanofiber (TEMPO-CNF)/epoxy composites was developed through a simple solution-casting polymerization (SCP). The PEDOT layer coated on TEMPO-CNF/epoxy substrates (PEDOT/TEMPO-CNF/epoxy) functions as a conductive electrode that is simultaneously capable of undergoing reversible color change. The optimized PEDOT layer showed a high electrical conductivity of 1276.5 S/cm and a large transmittance contrast (ΔT) = 32.3 %. Novel bioplastic-based ECD with PEDOT/TEMPO-CNF/epoxy composites was constructed in this study by leveraging the advantages of the simple SCP process, high electrical conductivity, and large color contrast of the PEDOT layers. The fabricated ECD exhibited a reversible color transition from light blue (semi-transparent state) and dark blue (colored state) depending on the redox potential and showed a high coloration efficiency (CE) value of 223.3 cm2/C. This suggests that our approach could enhance our ability to create bioplastic-based ECDs with various conductive and electrochromic materials.

Original languageEnglish
Article number155955
JournalApplied Surface Science
Publication statusPublished - 2023 Mar 15

Bibliographical note

Funding Information:
This study was supported by the Bio & Medical Technology Development Program of the National Research Foundation (NRF) funded by the Korean government (MSIP) (No. 2021M3A9I5021437) and by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) ( No. 2022R1A4A1020543 ). This study also was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No.20213030010430).

Publisher Copyright:
© 2022 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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