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Issue 4, 2019
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Thin and porous polymer membrane-based electrochromic devices

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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.

Graphical abstract: Thin and porous polymer membrane-based electrochromic devices

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Article information


Submitted
12 Oct 2018
Accepted
18 Dec 2018
First published
19 Dec 2018

J. Mater. Chem. C, 2019,7, 1042-1047
Article type
Paper

Thin and porous polymer membrane-based electrochromic devices

T. Han, C. B. Dzakpasu, D. Kim, S. Kim, Y. Jeong, M. Ryou and Y. M. Lee, J. Mater. Chem. C, 2019, 7, 1042
DOI: 10.1039/C8TC05157G

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