Gel electrolyte-based flexible electrochromic devices showing subtractive primary colors

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• 作者：Norihisa Kobayashi ; Shohei Miura ; Mami Nishimura ; Yutaka Goh
• 关键词：Electrochromism ; Gel electrolyte ; Flexible EC device ; Subtractive primary colors
• 刊名：Electrochimica Acta
• 出版年：2007
• 期刊代码：30_00134686
• 类别：ch
• 出版时间：31 December 2007
• 卷：53
• 期：4
• 页码：1643-1647
• 文件大小：323 K

摘要

We studied flexible electrochromic devices containing phthalate derivative which showed reversible color change between water transparent and subtractive primary color by electrochemical reaction. Poly(vinyl butyral) (PVB)-based gel electrolyte was prepared to apply the flexible electrochromic device. The ionic conductivity of the gel electrolyte depended on the polymer content, and was higher than 10⁻⁴ S/cm at 25 °C at the PVB content of 33 wt%. Redox reaction of phthalate derivatives was successfully achieved in the gel electrolyte. It is revealed that PVB-based gel electrolyte works well as the material for flexible electrochromic devices showing subtractive primary colors.