Affiliation:
1. Fouman Faculty of Engineering, College of Engineering University of Tehran Tehran Iran
2. Protein Research Center Shahid Beheshti University Tehran Iran
3. Nanomaterials Research Lab, Department of Chemistry Missouri University of Science and Technology Rolla Missouri USA
4. Department of Chemical Engineering Missouri University of Science and Technology Rolla Missouri USA
Abstract
AbstractThis research studies the improving effects of graphene porous (GP) on the supercapacitive performance of a polyaniline/graphene porous (PANI/GP) nanocomposite. GP nanosheets were synthesized via chemical vapor deposition, and PANI/GP was electrochemically composited through successive cyclic voltammetry. The samples were characterized by fast Fourier transform infrared (FTIR), x‐ray diffraction (XRD), and scanning electron microscopy (SEM), and energy‐dispersive x‐ray spectrometry (EDS) techniques. Porous GP nanosheets were uniformly dispersed in the composite structure. Furthermore, the electrochemical performances of the synthesized samples were compared using galvanostatic charge/discharge, electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). Incorporating GP into the PANI significantly increased specific capacitance from 276 (in PANI) to 577 F/g (in PANI/GP). The electrochemical stability of electrodes was compared during 1000 successive charge/discharge cycles. After 1000 cycles, PANI/GP kept 90% of its initial capacitance, and only 25% of the charge storage capacitance of bare PANI remained.
Subject
Materials Chemistry,Polymers and Plastics,Surfaces, Coatings and Films,General Chemistry
Cited by
1 articles.
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