Due to the necessity of using of clean and renewable energy sources, energy harvesting and storage devices have been developed in recent years. Electrochemical capacitors (supercapacitor) and Lithium-ion batteries are devices that consist of two electrodes, one separator and electrolyte. High weigh and low flexibility are challenges in development of energy storage devices, so development of fiber-shaped, flexible and low weight seem a proper approach. In this study, polyamide 6 nanofibers were coated by polyaniline and graphene using of Insitu polymerization of aniline and the properties of the nanofibers were investigated by Field Emittion Scanning Electron Microscope (FESEM), Fourier transform infrared spectroscopy (FTIR), X Ray Diffraction (XRD), Thermo gravimetric analysis (TGA), tensile strength measurments, electrical conductivity and Cyclic Voltommetry measurments (CV). FESEM images showed bead-free polyamide 6 nanofibers that confirmed optimum condition of electrospinning. FTIR results showed presence of the polyaniline on the surface of nanofibers and confirmed successful Insitu polymerization of aniline on the surface of polyamid6 nanofibers. XRD patterns showed no changes in crystalline structure of polyamid6 nanofibers after coating. TGA results showed improvement in thermal stability of polyamide 6 nanofibers after coating. Tensile strength and Young’s modulus of the nanofibers increased and strain of them decreased after coating. Electrical conductivity showed increase by increasing aniline concentration. CV and charge/decharge results also confirmed improvement in electrochemical properties of coated nanofibers.
