Supercapacitive properties of a nanowire-structured MnO(2) electrode in the gel electrolyte containing silica

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Nanowire-structured MnO2 active materials were prepared by a chemical precipitation method and their supercapacitive properties for use in the electrodes of supercapacitors were investigated by means of cyclic voltammetry in an aqueous gel electrolytes consisting of 1 M Na2SO4 and fumed silica (SiO2). The MnO2 electrode showed a maximum specific capacitance of 151 F g(-1) after 1000 cycles at 100 mV s(-1) when using the gel electrolyte containing 3 wt.% of SiO2, which is higher than 121 F g(-1) obtained when using the 1 M Na2SO4 liquid electrolyte alone. (C) 2010 Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2010-10
Language
English
Article Type
Article; Proceedings Paper
Keywords

HYDROUS RUTHENIUM OXIDE; ELECTROCHEMICAL CAPACITORS; CARBON ELECTRODES; COMPOSITE; PERFORMANCE; POLYANILINE; STORAGE; ENERGY

Citation

ELECTROCHIMICA ACTA, v.55, no.25, pp.7443 - 7446

ISSN
0013-4686
DOI
10.1016/j.electacta.2010.02.027
URI
http://hdl.handle.net/10203/103448
Appears in Collection
CBE-Journal Papers(저널논문)
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