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 LiClO4. 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 × 103 cycles, of 60 sec duration.
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Acknowledgment This research was supported by Science and Technology of Korea.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry