Electrochemical double layer capacitor performance of electrospun polymer fiber-electrolyte membrane fabricated by solvent-assisted and thermally induced compression molding processes

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• 作者：Pyoung-Chan Lee^a ; ^b ; Tai-Hoon Han^a ; Taeseon Hwang^a ; Joon-Suk Oh^a ; Se-Joon Kim^c ; Byung-Woo Kim^d ; Youngkwan Lee^d ; Hyouk Ryeol Choi^e ; Sun Kyoung Jeoung^b ; Seung Eul Yoo^b ; Jae-Do Nam^a ; ^{jdnam@skku.edu}
• 关键词：Electric double layer capacitors ; Solid polymer electrolytes ; Electrospinning ; Poly(acrylonitrile) ; Compression molding
• 刊名：Journal of Membrane Science
• 出版年：2012
• 期刊代码：55_03767388
• 类别：ch
• 出版时间：1 August, 2012
• 卷：409-410
• 期：Complete
• 页码：365-370
• 文件大小：877 K

摘要

The electrochemical characteristics of electric double layer capacitors composed of solid polymer electrolytes with different thicknesses were investigated. A solid polymer electrolyte membrane was fabricated using electrospun fibers through solvent-assisted or thermally induced compression molding. Through the solvent-assisted or thermally induced compression molding processes, the poly(acrylonitrile) (PAN) microfibers consolidated together by the interlocking of the fibers under compression. A solid polymer electrolyte membrane clearly exhibited a free-standing shape with a bending capability. The electrospun PAN non-woven fabric and electrolyte salt composites showed higher ionic conductivity (>10^鈭? S cm^鈭? at 298 K) and capacitance compared with the liquid organic electrolyte. The solid polymer electrolytes provided a 10.6%increase in the energy density, seemingly due to the decrease in the IR drop and increase in the capacitance.