Song, M.-S. Nahm, S. Oh, Y.J. 2024-01-20T22:34:26Z 2024-01-20T22:34:26Z 2021-09-02 2008-10 1229-7801 https://pubs.kist.re.kr/handle/201004/133129 Electrochemical properties of carbon cryogel electrode for the application of composite electrode materials mixed with metal oxide in supercapacitor have been studied. Carbon cryogels were synthesized by sol-gel polycondensation of resorcinol with formaldehyde, followed by a freeze drying, and then pyrolysis in an inert atmosphere. Physical properties of carbon cryogel were characterized by BET, X-ray diffraction (XRD) and scanning electron microscopy (SEM). It is found that carbon cryogel is amorphous material. The electrochemical properties of carbon cryogel were measured by cyclic voltammetry as a function of concentration of liquid electrolyte, galvanostatic charge-discharge with different scan rates and electrochemical impedance measurements. The result of cyclic voltammetry indicated that the specific capacitance value of a carbon cryogel electrode was approximately 150.2 F/g (at 5 mV/s in 6 M KOH electrolyte). English Charge/discharge Freeze drying Galvanostatic Specific capacitance Supercapacitor Amorphous carbon Capacitance Capacitors Cyclic voltammetry Dewatering Electric discharges Electrochemical properties Electrolytes Electrolytic capacitors Gelation Metallic compounds Phenols Polycondensation Scanning electron microscopy X ray diffraction Electrochemical electrodes Preparation and Electrochemical Properties of Carbon Cryogel for Supercapacitor Article 10.4191/KCERS.2008.45.1.662 1 Journal of the Korean Ceramic Society, v.45, no.11, pp.662 - 666 Journal of the Korean Ceramic Society 45 11 662 666 scopus kci ART001292696 2-s2.0-67649974554 Article Charge/discharge Freeze drying Galvanostatic Specific capacitance Supercapacitor Amorphous carbon Capacitance Capacitors Cyclic voltammetry Dewatering Electric discharges Electrochemical properties Electrolytes Electrolytic capacitors Gelation Metallic compounds Phenols Polycondensation Scanning electron microscopy X ray diffraction Electrochemical electrodes Carbon cryogel Charge/discharge Freeze drying Galvanostatic Specific capacitance Supercapacitor