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Effects of Supporting Electrolytes on Spectroelectrochemical and Electrochromic Properties of Polyaniline‐poly(styrene sulfonic acid) and Poly(ethylenedioxythiophene)‐poly(styrene sulfonic acid)‐based Electrochromic Device
Author(s) -
Kuo ChungWen,
Chen BorKuan,
Li WenBin,
Tseng LanYu,
Wu TziYi,
Tseng ChingGuey,
Chen HoRei,
Huang YuChang
Publication year - 2014
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201300479
Subject(s) - electrochromism , electrochromic devices , pedot:pss , sulfonic acid , styrene , electrolyte , polyaniline , conductive polymer , chemistry , electrode , poly(3,4 ethylenedioxythiophene) , supporting electrolyte , polymer chemistry , chemical engineering , polymer , materials science , organic chemistry , copolymer , polymerization , engineering
Abstract Electrochromic devices are fabricated by using polyaniline (PANI) doped with poly(styrene sulfonic acid) (PSS) as coloring electrodes, poly(ethylenedioxythiophene)‐poly(styrene sulfonic acid) (PEDOT‐PSS) as complementary electrodes, and hybrid polymer electrolytes as gel electrolytes. The device based on LiClO 4 ‐based electrolyte (weight ratio of PMMA:PC:LiClO 4 = 0.7:1.1:0.3) shows the highest optical contrast and coloration efficiency (333 cm 2 /C) after 1200 cycles in these devices, and the color changes from pale yellow (−0.5 V) to dark blue (+2.5 V). The spectroelectrochemical and electrochromic switching properties of electrochromic devices are investigated, the maximum optical contrast (Δ T %) of electrochromic device for ITO|PANI‐PSS‖PMMA‐PC‐LiClO 4 ‐SiO 2 ‖PEDOT‐PSS|ITO are 31.5% at 640 nm, and electrochromic device based on LiClO 4 ‐based electrolyte with SiO 2 shows faster response time than that based on LiClO 4 ‐based electrolyte without SiO 2 .