Preparation of PPy/CNT Composite Applications for Supercapacitor Electrode Material

B. Du; Qi Jiang; X.F. Zhao; B. Huang; Y. Zhao

doi:10.4028/www.scientific.net/MSF.610-613.502

Paper Titles

Optimizing on the Negative Electrode of Ni/MH Power Battery by Orthogonal Design
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CNT-CoO Complex Conductive Agent for the Positive Electrodes of MH/Ni Batteries
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Preparation for the Hollow Nickel Fibres of the Positive Current Collector by Electroless Plating Technique
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Effects of Mg²⁺ Doping on the Properties of LiFePO₄ Synthesized via Hydrothermal Route
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Preparation of PPy/CNT Composite Applications for Supercapacitor Electrode Material
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Investigation on Lithiation Mechanism of Interphase Ni₃Sn₄ Alloy Used as Anode Material for Lithium-Ion Batteries
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PVDF-PAn Co-Polymer with High Permittivity Fabricated by Emulsion Polymerization
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Study on 1/f ^γ Noise Characterization of Metallic Interconnection Electromigration
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Thermodynamics of Oxidation on Pb-Free Solders at Elevated Temperature
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Preparation of PPy/CNT Composite Applications for Supercapacitor Electrode Material

Abstract:

In this paper, the CNT was used as the reinforcing material to overcome the PPy swelling and shrinkage during the doping-undoping process. The electrochemical capacitance is about 25 F/g in organic electrolyte. The PPy/CNT composite (2:1, m/m) was prepared by depositing the polypyrrole onto functionalized multi-walled CNT in aqueous-methanol solution via chemical polymerization. The obtained composite material was characterized by scanning electron microscopy and infrared spectrum. And the electrochemical performance of the composite material was tested by cyclic voltammetry and galvanostatic charging–discharging cycling. The results showed that the obtained polymer was the PPy and sheet; moreover, the PPy was coated on surface of the CNT. The electrochemical capacitance was about 154.5 F/g (organic electrolyte), which was about 6 times that of pure PPy (about 25 F/g).