| The copper（Cu）nanoparticle is one of the most important conductive metal materials applied widely in conductive materials,magnetic materials and shielding materials due to their particular physical properties.Carbon nanotubes with many excellent properties have been received significant attention.The acidulated carbon nanotubes supported with Cu nanoparticles can be prepared to obtain the nano composite materials with outstanding conductivity.PANI（polyaniline）is the main material to make electrode material because of its excellent electrical conductivity.In this research,the objective is to preparation of copper nanoparticles decorated on multi-walled carbon nanotubes（MWNTs）to obtain the Cu/MWNTs nanocomposite which was used to doping PANI by in situ polymerization.This kind of polymer nanocomposites has higher capacitance,and it can be applied to electrode materials of super capacitor.In the study,the liquid phase reduction method was used to prepare the copper nanoparticles with hydrazine hydrate as the reductant.During the reaction N2 was produced by hydrazine which can prevent Cu nanoparticles from oxidation effectively.The size and morphology of Cu nanoparticles were systematically investigated.The MWNTs were supposed to use as surfactant and template to decorate Cu nanoparticles.MWNTs contains a number of active groups and has high dispersion which was acidized by nitration mixure.The Cu/MWNTs nanocomposite was prepared by liquid phase reduction too.The analysises demonstrate that there is chemical action between Cu and MWNTs.This research prepared PANI/MWNTs/Cu composites which were core-shell structure with the Cu/MWNTs nanoparticle was the core and the PANI was the shell by insitu polymerization with ammonium persulfate as oxidant.Compared with the results of cyclic voltammetric of different percentage of Cu/MWNTs in the composite,the highest specific capacitance of PANI/MWNTs/Cu composites can be obtained for the composite with 15 wt%Cu/MWNTs loading. |
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