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All Solid-state Electrochromic Window Based On Poly(aniline N-butylsulfonate)s
Published 1997 · Materials Science
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Abstract All solid electrochromic windows were assembled by using an anodically coloring poly(aniline N-butylsulfonate) ion conducting polymer electrolyte, and a cathodically coloring tungsten trioxide. Ion conducting polymers were prepared via photo cross-linking reactions of poly(ethylene glycol)-modified methacrylates with tri(propylene glycol) diacrylate in the presence of a photo initiator and LiClO 4 . Cyclic life and the color contrast of the all solid state window were enhanced by the introduction of styrene and butylmethacrylate, and H + -conducting Nafion into the electrolyte. Lifetime tests show that the electrochromic window could support more than 2 × 10 3 cycles, of 60 sec duration.