High contrast ratio and fast switching polymeric electrochromic films based on water-dispersible polyaniline-poly(4-styrenesulfonate) nanoparticles

Title
High contrast ratio and fast switching polymeric electrochromic films based on water-dispersible polyaniline-poly(4-styrenesulfonate) nanoparticles
Authors
유성종조준혁임주완박선하장정식성영은
Keywords
Electrochromic; Polyaniline; Polymer nanoparticle; Conjugated polymer; Diffusion coefficient; Response time
Issue Date
2010-01
Publisher
Electrochemistry communications
Citation
VOL 12, 164-167
Abstract
We prepared polyaniline-poly(4-styrenesulfonate) nanoparticles (PANI/PSS-NPs) by chemical oxidation polymerization in aqueous solution. We investigated the potential of the PANI/PSS-NPs to be used as an anode electrode for electrochromic devices and the effect of Li+ insertion (or deinsertion) kinetics and diffusion of Li+. A uniform electrochromic layer of PANI/PSS-NPs with a size of ca. 28 nm could be obtained by a solution process, specifically spin coating. The PANI/PSS-NPs film has a high Li+ diffusion coefficient (~7.7 x 10-9 ㎠ s-1) and low charge transfer resistance (~99 Ω), which result in its having a fast electrochromic response time (coloring time <1.7 s, bleaching time <2.4 s), and high coloration efficiency (>108 ㎠ C-1).
URI
http://pubs.kist.re.kr/handle/201004/40944
ISSN
1388-2481
Appears in Collections:
KIST Publication > Article
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