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http://dx.doi.org/10.9713/kcer.2011.49.1.010

The Electrochemical Characteristics of Mesopore Active Carbon Fiber for EDLC Electrode  

Kang, Chae-Yoen (Department of Chemical Engineering, Research Institute of Industrial Sci. & Tech., Chungbuk National Univ.)
Shin, Yun-Sung (Department of Chemical Engineering, Research Institute of Industrial Sci. & Tech., Chungbuk National Univ.)
Lee, Jong-Dae (Department of Chemical Engineering, Research Institute of Industrial Sci. & Tech., Chungbuk National Univ.)
Publication Information
Korean Chemical Engineering Research / v.49, no.1, 2011 , pp. 10-14 More about this Journal
Abstract
The electrode material performances of electric double layer capacitor(EDLC) were investigated using mesopous active carbon fiber(ACF), which was prepared by the iron exchange method. The mesoporous ACF had pore characteristics of specific surface area around 1249, 664 $m^2$/g, mesoporous fraction around 70.6-81.3% and meanpore size around 2.78-4.14 nm. The results showed that as HNO3 treatment time decreased, the specific surface area increased and mesoporous fraction decreased. To investigate electrochemical performance of EDLC, unit cell was manufactured using mesoporus ACF, conducting material and binder; organic elctrolyte was used on this experiment. The specific capacitance of ACF treated with HNO3 for 2 hours turned out to be 0.47 $F/cm^2$and the results of the cyclic charge-discharge tests were stable. Thus, the electrochemical performance of EDLC was mainly dependent on specific surface area of ACF electrode and the diffusion resistance of charge decreased as the mesopore increased.
Keywords
Active Acrbon Fiber; Mesopore; EDLC; Ion Exchange; Organic Electrolyte;
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Times Cited By KSCI : 1  (Citation Analysis)
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