高功率超高電容器之研發(1/2)
Other Title
Development of high power electrochemical capacitors
Date Issued
2002
Date
2002
Author(s)
DOI
902214E002009
Abstract
In the first year, we prepared highly crystallized
antimony doped Tin oxide (ATO) sol, by using
sol-gel process followed by hydrothermal process.
The highly crystallized sol was used to prepare
electrochemical capacitor electrode without adding
any binder, which insist to characterize the properties
of these electrodes in different conditions, and we
have also used the ATO thin film electrodes as
current-collector to increase the capacitance in
various methods.The performance of ATO thin film
electrodes exhibited not only typical double-layer
capacitance, but also semiconducting nature. It was
found that the performance of capacitance was
strongly affected by space charge, crystallization,
specific surface area and the pore microstructure. It
was also found the optimum heat-treated temperature
was 500 o C,and at this temperature, the oxide thin film
was fully crystallized. The capacitance in vacuum at
the optimum heat-treat temperature was observed
double to the capacitance in air at the same
temperature. We finally used the fully crystallized
ATO thin film electrode as current-collector, and
formed RuO2 on the electrodes via two methods:
1.Thermal pyrolysis 2.Cyclic voltammetry. It’s
behavior changed from typical EDLC to pseudocapacitance.
Subjects
Supercapacitor
tin oxide ruthenium oxide
thin-film electrode
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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