Preparation and Electrochemical Properties of Carbon Cryogel for Supercapacitor

Min Seob Song, Sahn Nahm, Young Jei Oh

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


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).

Original languageEnglish
Pages (from-to)662-666
Number of pages5
JournalJournal of the Korean Ceramic Society
Issue number11
Publication statusPublished - 2008 Nov


  • Carbon cryogel
  • Charge/discharge
  • Freeze drying
  • Galvanostatic
  • Specific capacitance
  • Supercapacitor

ASJC Scopus subject areas

  • Ceramics and Composites


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