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Thin and porous polymer membrane-based electrochromic devices

Title
Thin and porous polymer membrane-based electrochromic devices
Authors
Han, TaeyeongDzakpasu, Cyril BubuKim, DohwhanKim, SeokwooJeong, Yong-CheolRyou, Myung-HyunLee, Yong Min
DGIST Authors
Lee, Yong Min
Issue Date
2019-01
Citation
Journal of Materials Chemistry C, 7(4), 1042-1047
Type
Article
Article Type
Article
Keywords
Cyclic voltammetryElectrochromic devicesElectrochromismElectrolytesFluorine compoundsLithium compoundsNickel compoundsPolymersPore structureTungsten compoundsColor changingDibutyl phthalatesElectrochromicsLiquid electrolytesPoly(vinylidene fluoride-co-hexafluoropropylene)Porous polymersPropylene carbonateSmart windowsMembranesChlorine compounds
ISSN
2050-7526
Abstract
An electrochromic (EC) device based on a thin and porous polymer membrane was newly fabricated for large-area applications such as smart windows. The pore structure of the poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP) membrane was generated by extracting the pore generation material, dibutyl phthalate (DBP), from the cast film consisting of PVdF-HFP and DBP. The thickness of the porous polymer membrane was controlled to be very thin (approximately 30 μm), and the membrane was used to assemble WO3/W-NiO EC devices with 1 M LiClO4 in propylene carbonate as liquid electrolyte. Since the porous polymer membrane has a higher ionic conductivity than the non-porous one, the EC device with the porous polymer membrane showed a much higher current density in cyclic voltammetry even at a high scanning rate, faster color changing speed, and better stability after 500 cycles. © 2019 The Royal Society of Chemistry.
URI
http://hdl.handle.net/20.500.11750/9609
DOI
10.1039/c8tc05157g
Publisher
Royal Society of Chemistry
Related Researcher
  • Author Lee, Yong Min Battery Materials & Systems LAB
  • Research Interests Battery; Electrode; Electrolyte; Separator; Simulation
Files:
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Collection:
Department of Energy Science and EngineeringBattery Materials & Systems LAB1. Journal Articles


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