Preparation and optimization of RuO2-impregnated SnO2 xerogel supercapacitor
Resource
Journal of Power Sources 104(2002), 62-65
Journal
Journal of Power Sources
Pages
62-65
Date Issued
2002
Date
2002
Author(s)
DOI
246246/2006111501233290
Abstract
A Sb (6mol%)-doped SnO2 xerogel impregnated with RuO2 nanocrystallites is prepared via an incipient-wetness method and is optimized for its electrochemical capacitance in aqueous 1M KOH electrolyte by adjusting the calcination temperature and the RuO2 loading. The electrode capacitance does not increase monotonically with increasing RuO2 loading. A maximum electrode capacitance of 15Fg-1, which represents a three-fold increase compared with the blank xerogel and a specific RuO2 capacitance of 710Fg-1 RuO2, is obtained with a RuO2 loading of 1.4wt.% and by calcination at 200°C. Higher loadings presumably result in a homogeneous nucleation upon drying, which causes severe reduction in the total surface area of the RuO2 crystallites. © 2002 Elsevier Science B.V. All rights reserved.
Subjects
Capacitance
calcinations
nanocrystallites
ruthenium oxide
super capacitor
xergel
SDGs
Publisher
Taipei:National Taiwan University Dept Chem Engn
Type
journal article
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