Research on pseudocapacitance mechanism and performance improvement for magnetite supercapacitor(1/3)
Date Issued
2004-05-24
Date
2004-05-24
Author(s)
DOI
922214E002024
Abstract
The specific capacitance of thin film
magnetite possess 130 F/g in 1 M Na2SO3(aq) which is
due to higher conductivity and dispersion by
electroplating process. In order to explore the
pseudocapacitive mechanism of magnetite in
Na2SO3(aq), combined use of CV and EQCM offers
a route to obtain the reversible oxidation and
reduction reaction. We found that SO3 2- ions adsorbed
on Fe3O4 surface and transformed into adsorbed S 2-
upon reduction. During the oxidation process,
S2-ions returned to SO32-
ion on Fe3O4.
Subjects
Supercapacitor
iron oxide
Pseudo-capacitance
Publisher
臺北市：國立臺灣大學化學工程學系暨研究所
Type
report
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