Preparation and electrochemical characterization of porous SWNT–PPy nanocomposite sheets for supercapacitor applications

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• 作者：Jiyoung Oh ; Mikhail E. Kozlov ; Bog Gi Kim ; Hyung-Kook Kim ; Ray H. Baughman ; Yoon Hwae Hwang
• 关键词：SWNT– ; PPy ; Cyclic voltammetry ; Polymer
• 刊名：Synthetic Metals
• 出版年：2008
• 出版时间：September 2008
• 年：2008
• 卷：158
• 期：15
• 页码：638-641
• 全文大小：843 K

文摘

Highly porous sheets comprised of single walled carbon nanotubes and doped polypyrrole (SWNT–PPy) were prepared by vacuum filtration of SWNT–PPy methanol dispersions. The employed preparation procedure is an extension of conventional bucky-paper fabrication technique for the multi-component system. A number of nanocomposites with nominal SWNT:PPy compositions ranging from 1:0 to 1:1 were obtained and tested. Electrochemical properties of the nanocomposites were investigated by cyclic voltammetry and galvanostatic spectroscopy technique in aqueous 1 M NaCl electrolyte. The highest specific capacitance of 131 F/g was obtained for nanocomposite with 1:1 SWNT:PPy ratio. Prospective applications of prepared materials range from supercapacitors to electrodes for batteries and electromechanical actuators.