Ultrasmall SnO2 nanoparticle-intercalated graphene@polyaniline composites as an active electrode material for supercapacitors in different electrolytes

Title
Ultrasmall SnO2 nanoparticle-intercalated graphene@polyaniline composites as an active electrode material for supercapacitors in different electrolytes
Author(s)
심재진웬방호아
Keywords
HIGH-PERFORMANCE SUPERCAPACITORS; PHOTOCATALYTIC ACTIVITY; IONIC LIQUID; NICKEL FOAM; ARRAYS
Issue Date
201509
Publisher
ELSEVIER SCIENCE SA
Citation
SYNTHETIC METALS, v.207, pp.110 - 115
Abstract
A ternary composite of graphene, SnO2 nanoparticles and polyaniline (PANI) was prepared by a two-step method using an ionic liquid and water as the solvents. First, reduced graphene oxide/SnO2 (RGO/SnO2) nanocomposites were synthesized within 10 min using a microwave-assisted method in an ionic liquid without a reducing reagent. Second, the resulting RGO/SnO2 hybrids were coated with polyaniline (PANI) by the in situ polymerization of aniline in an aqueous medium. Transmission electron microscopy and scanning electron microscopy revealed ultrasmall SnO2 nanoparticles, ca. 5 nm in size, intercalated with graphene layers and polyaniline (PANI). The composite modified electrodes exhibited a high rate capacity, such as 1012 F g(-1) of C-S in 1 M Na2SO4 at 4 Ag-1. Furthermore, the proposed strategy provides a novel method for the fabrication of other ternary graphene-based composites with metal oxide and conducting polymers as electrode materials for supercapacitors. (C) 2015 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/30972http://dx.doi.org/10.1016/j.synthmet.2015.06.010
ISSN
0379-6779
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공과대학 > 화학공학부 > Articles
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