Composite Materials with MWCNTs and Conducting Polymer Nanorods and their Application as Supercapacitors |
Lichun Liua, Sang-Hoon Yoo, Sung-Ho Park |
Department of Chemistry, Sungkyunkwan University;Department of Energy Science, Sungkyunkwan University;SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University; |
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Abstract |
This study demonstrated the synthesis of high-surface-area metal-free carbonaceous electrodes (CE) from anodic aluminum oxide (AAO) templates, and their application as supercapacitors. Multi-walled Carbon nanotubes (MWCNTs) were interwoven into a porous network sheet that was attached to one side of AAO template through a vacuum filtration of the homogeneously dispersed MWCNT toluene solution. Subsequently, the conducting polymer was electrochemically grown into the porous MWCNT network and nanochannels of AAO, leading to the formation of a carbonaceous metal-free film electrode with a high surface area in the given geometrical surface area. Typical conducting polymers such as polypyrrole (PPY) and poly(3,4-ethylenedioxythiophene) (PEDOT) were examined as model systems, and the resulting electrodes were investigated as supercapacitors (SCs). These SCs exhibited stable, high capacitances, with values as high as 554 F/g, 1.08 F/$cm^2$ for PPY and 237 F/g, 0.98 F/$cm^2$ for PEDOT, that were normalized by both the mass and geometric area. |
Key Words:
AAO, MWCNT, Polypyrrole, PEDOT, Conducting polymer, Nanorods, Supercapacitor |
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