title: A Novel High-Performance Supercapacitor based on Chitosan/Graphene Oxide-MWCNT/Polyaniline.
abstract: Chitosan/Graphene Oxide-MWCNT/polyaniline (CS/GM/PANI) ternary nanocomposite has been synthesized via in situ polymerization of aniline in the presence of CS/GM. The Morphology of nanocomposites was studied by Field emission scanning electron microscopy (FE-SEM), Fourier transform infrared (FT-IR) spectroscopy, as well as X-ray photoelectron spectroscopy (XPS). Furthermore, the supercapacitive behavior of the CS-based samples was investigated using cyclic voltammetry (CV), galvanostatic charge-discharge (CD) and electrochemical impedance spectroscopy (EIS) techniques in 0.5M Na2SO4. It is found that the CS/GM/PANI nanocomposite displays much higher specific capacitance along with better cycle stability than those of CS and CS/GM. The specific capacitance of 609.2Fg-1(48.5mFcm-2) was obtained for the CS/GM/PANI at a scan rate of 10mVs-1. In addition, the synthesized nanocomposite retained 96% of the initial capacitance after 500 cycles of charge-discharge at a current density of 5Ag-1. The improvement in the supercapacitive behavior of CS/GM/PANI may be attributed to the porous structure and pseudocapacitive mechanism of charge-storage.
authors.affiliation: Department of Physical Chemistry, Electrochemistry Research Laboratory, University of Tabriz, Tabriz, Iran; Engineering Faculty, Department of Materials Science and Nanotechnology, Near East University, 99138 Nicosia, North Cyprus, Mersin 10, Turkey. Electronic address: mg-hosseini@tabrizu.ac.ir.
authors.forename: Mir
authors.initials: M
authors.lastname: Ghasem Hosseini
authors.affiliation: Department of Physical Chemistry, Electrochemistry Research Laboratory, University of Tabriz, Tabriz, Iran.
authors.forename: Elham
authors.initials: E
authors.lastname: Shahryari
keywords: Chitosan; Graphene oxide; High-performance supercapacitor; MWCNT; Polyaniline