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http://dx.doi.org/10.5229/JKES.2003.6.2.153

A Hybrid Electrochemical Capacitor Using Aqueous Electrolyte  

Kim, Jong-Huy (Energy Storage Research Center, Korea Institute of Energy Research)
Jin, Chang-Soo (Energy Storage Research Center, Korea Institute of Energy Research)
Shin, Kyoung-Hee (Energy Storage Research Center, Korea Institute of Energy Research)
Lee, Mi-Jung (Energy Storage Research Center, Korea Institute of Energy Research)
Publication Information
Journal of the Korean Electrochemical Society / v.6, no.2, 2003 , pp. 153-157 More about this Journal
Abstract
A hybrid electrochemical capacitor having both characteristics of electric double layer capacitance and pseudo-capacitance was studied throughout cell tests. Asymmetric electrodes with $Ni(OH)_2/activated$ carbon based positive electrode and activated carbon based negative electrode were used in preparing test cells of $5\times5cm^2$. Cyclic voltammetry measurements and impedance measurements were conducted to understand electrochemical behavior of each electrode. To find an optimal mass ratio of negative to positive electrode, charge-discharge cycle tests were also performed.
Keywords
Hybrid capacitor; Asymmetric electrode; Aqueous electrolyte.;
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  • Reference
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[ J. H. Kim;K. H. Shin;C. S. Jin ] / Electrochemistry
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[ J. H. Park;O. O. Park;K. H. Shin;C. S. Jin;J. H. Kim ] / Electrochem. Soilid State Lett