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Title: Synthesis of polyaniline/SnO{sub 2} nanocomposite and its improved electrochemical performance

Highlights: • Supercapacitors based on PANI/SnO{sub 2} nanocomposite were reported. • Supercapacitors using this material gave a specific capacitance of 501 F g{sup −1}. • Capacitance retention was 85.8% over 2000 charge–discharge cycles. - Abstract: SnO{sub 2} was prepared by the hydrothermal route. Aniline monomer was polymerized in the suspension of SnO{sub 2} to form inorganic–organic nanocomposite materials, in which SnO{sub 2} particles were embedded within polyaniline (PANI). Morphological and structural characterizations of the prepared samples were carried out using scanning electron microscope; transmission electron microscope; power X-ray diffraction and Fourier transform infrared spectroscopy. Their electrochemical properties were also investigated using cyclic voltammetry, galvanostatic charge–discharge and electrochemical impedance spectroscopy. The as-prepared nanocomposites had excellent properties in the capacitance, and its specific capacitance was up to 501 F g{sup −1} with a specific energy density of 66.8 W h kg{sup −1} at a power density of 960.6 W kg{sup −1}. The device fulfilled the requirement of long durability necessary for an energy storage system, since after 2000 galvanostatic charge–discharge cycles, retention of 85.8% in capacitance was observed. These results indicated that the PANI/SnO{sub 2} had a synergistic effect of the complementary properties of both components.
Authors:
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Publication Date:
OSTI Identifier:
22420657
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 60; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANILINE; CAPACITANCE; CAPACITIVE ENERGY STORAGE EQUIPMENT; ELECTROCHEMISTRY; ENERGY STORAGE SYSTEMS; HARDNESS; IMPEDANCE; MONOMERS; NANOCOMPOSITES; PERFORMANCE; RETENTION; SCANNING ELECTRON MICROSCOPY; SERVICE LIFE; SUSPENSIONS; SYNTHESIS; TIN OXIDES; TRANSMISSION ELECTRON MICROSCOPY; VOLTAMETRY; WEAR RESISTANCE; X-RAY DIFFRACTION