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 WO 3 /W-NiO EC devices with 1 M LiClO 4 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.
Original language | English |
---|---|
Pages (from-to) | 1042-1047 |
Number of pages | 6 |
Journal | Journal of Materials Chemistry C |
Volume | 7 |
Issue number | 4 |
DOIs | |
State | Published - 2019 |
Bibliographical note
Publisher Copyright:© 2019 The Royal Society of Chemistry.