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Fabrication and Characterization of Porous Carbon Electrode for Electrosorption  

Park, Nam-Soo (Department of Chemical Engineering, Kongju National University)
Choi, Jae-Hwan (Department of Chemical Engineering, Kongju National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.30, no.4, 2008 , pp. 409-414 More about this Journal
Abstract
Porous carbon electrode for electrosorption was prepared by a wet phase inversion method. Carbon slurry that was a mixture of activated carbon powder(ACP) and PVdF solution was cast directly upon a graphite sheet by means of a casting knife. Porous carbon electrodes were fabricated by immersing the cast film in pure water as a non solvent. Physical and electrochemical properties of carbon electrodes prepared with various ACP contents(50.0, 75.0, 83.3, 87.5, 90.0 wt %). From the SEM images we can verify that the electrode was porous. The average pore sizes determined for the electrodes fabricated with various ACP contents ranged from 72.7 to 86.4 nm and the size decreased as the ACP content increased. The electrochemical properties were characterized by cyclic voltammetry(CV) method. All of the voltammograms showed typical behavior of an electric double layer charging/discharging on the carbon surface. The capacitance increased with the ACP content and the values ranged from 2.18 F/cm$^2$ for 50 wt% ACP to 4.77 F/cm$^2$ for 90 wt% ACP.
Keywords
Desalination; Electrosorption; Phase Inversion Method; Porous Carbon Electrode; Capacitance;
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Times Cited By KSCI : 2  (Citation Analysis)
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