Carbon nanotube and conducting polymer composites for supercapacitors |
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Authors: | Chuang Peng Shengwen Zhang Daniel Jewell George Z Chen |
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Institution: | School of Chemical and Environmental and Mining Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK |
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Abstract: | Composites of carbon nanotubes and conducting polymers can be prepared via chemical synthesis, electrochemical deposition on pre-formed carbon nanotube electrodes, or by electrochemical co-deposition. The composites combine the large pseudocapacitance of the conducting polymers with the fast charging/discharging double-layer capacitance and excellent mechanical properties of the carbon nanotubes. The electrochemically co-deposited composites are the most homogeneous and show an unusual interaction between thepolymer and nanotubes, giving rise to a strengthened electron delocalisation and conjugation along the polymer chains. As a result they exhibit excellent electrochemical charge storage properties and fast charge/discharge switching, making them promising electrode mate-rials for high power supercapacitors. |
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Keywords: | Supercapacitor Carbon nanotube Conducting polymer |
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