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Effect of Electrode Thickness on Electrochemical Performance of Carbon
Based Supercapacitor
Umar Farouq bin Wisam
Supervisor: Dr. Khadijah Hilmun Binti Kamarudin
Co-Supervisor: Assoc. Prof. Dr. Mohd Ikmar Nizam Mohamad Isa
Bachelor of Applied Science (Electronics and Instrumentation Physics)
School of Ocean Engineering
Supercapacitor is as an alternative to power sources in which energy is stored via
charge separation across the blocking or polarizable electrode/electrolyte interfaces.
In this study supercapacitor based carboxymethyl cellulose-ammonium nitrate solid
polymer electrolyte (SPE) was fabricated and the effect of different electrode thickness
on their electrochemical performance was investigated. The structure properties and
electrochemical performance of supercapacitor were studied using scanning electron
microscope (SEM) and galvanostatic charge-discharge (GCD). Impedance analysis
showed the ionic conductivity of SPE was ~10 -3 S/cm. SEM revealed that no changes
of the grain size and porosity were found for different electrode thickness. However,
GCD analysis showed that the highest and stable specific capacitance was observed
for supercapacitor with 200um electrode thickness because it shows supercapacitor
characteristics and the charge/discharge profiles of the samples exhibit almost the
isosceles triangle curves, which indicate the simulative capacitor with the performance
of electrochemical stability and reversibility.
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