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Preparation and Electrochemical Characteristics of Polypyrrole/Graphene Nanosheet Composites for Supercapacitor Electrodes

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Supercapacitor electrode based on polypyrrole/graphene nanosheets composite (PPy/GNS) is synthesized via in situ chemical polymerization of pyrrole monomer in graphene-dispersed solution. The morphology and structure of the composites are characterized by Fourier transform infrared spectrometer (FTIR) and scanning electron microscopy (SEM). Electrochemical properties were characterized by cyclic voltammetry (CV) and constant current charge–discharge in 1 M NaNO3 electrolyte. PPy/GNS composite exhibited the better electrochemical performances than the pure polypyrrole. The composite is a promising candidate for supercapacitors to have higher specific capacitance and better rate capability than those of pure individual components. The composites exhibited specific capacitance of 354 F g-1 at the charge/discharge current density of 0.5 A g-1.
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Keywords: Capacitor; Electrochemical Analysis; Electrode; Graphene; Polypyrrole

Document Type: Research Article

Affiliations: 1: School of Chemical and Biochemical Engineering, Pusan National University, San 30, Jangjeon-dong, Geumjeong-gu, Pusan 609-735, South Korea 2: Department of Chemical Engineering, Korea University of Technology and Education, Cheonam-si, Chungnam-do, 330-708, South Korea

Publication date: August 1, 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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