Preparation and performance characterization of carbon nanotubes/polyaniline composite electrodes
In this paper,a flexible carbon cloth was used as the fluid collector of the composite electrode,and the high-conductivity carbon nanotubes(CNTs)were embedded into the polyvinylidiene fluoride(PVDF)bind-er by electrostatic flocking to obtain a composite structure with a larger electrochemically active surface area.Then,polyaniline(PANI)with pseudocapacitance characteristics was plated on the surface of CNTs by electro-chemical deposition,and a binary composite electrode with carbon nanotubes/polyaniline(CNTs/PANI)was obtained.The structure of the electrode material was characterized by scanning electron microscopy(SEM).The flexible solid-state supercapacitor(SSC)with symmetrical structure was assembled with polyvinyl alcohol(PVA)hydrogel electrolyte containing sulfuric acid,and its electrical performance was tested by electrochemi-cal workstation.The results show that the SSC has a specific capacity of 517 mF/cm2 at a current of 1 mA/cm2.After 2500 cycles,it has a capacity retention rate of 79.8％and a Coulomb efficiency of more than 97％.The study shows that electrostatic flocking technology can be used as an effective way to prepare high performance electrode materials.
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维普
