Synthesis of a grafted cellulose gel electrolyte in an ionic liquid ([Bmim]I) for dye-sensitized solar cells

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• 作者：Pinjiang Li ; ^a ; ^{lipinjiang@126.com"" rel=""nofollow} ; Yange Zhang^a ; Wenjun Fa^a ; Yidong Zhang^a ; Baojun Huang^a
• 关键词：Grafted cellulose ; Dye-sensitized solar cell ; Electrolyte ; Quasi-solid state ; Ionic liquid
• 刊名：Carbohydrate Polymers
• 出版年：2011
• 出版时间：30 August 2011
• 年：2011
• 卷：86
• 期：3
• 页码：1216-1220
• 全文大小：254 K

文摘

The cellulose was grafted homogeneously with acrylic acid by in situ polymerization in an ionic liquid 1-butyl-3-methylimidazolium iodide ([Bmim]I) as reaction medium. This polymer is suitable for quasi-solidification of electrolytes in DSSCs by in situ synthesis because the polymerization reaction proceeds in the ionic liquid containing iodide ion. Using the matrix as polymer host, KI and I₂ as ionic conductors, an ionic conductivity of the gel polymer electrolyte was achieved 7.33 mS cm⁻¹. Based on the optimized gel electrolyte, the best result of the quasi-solid state dye-sensitized solar cell (QS-DSSC) was the light-to-electricity conversion efficiency of 5.51 % under a light intensity of 100 mW cm⁻² (AM 1.5).