title: CO2 Activated Carbon Aerogel with Enhanced Electrochemical Performance as a Supercapacitor Electrode Material.
abstract: Carbon aerogel (CA) was prepared by a sol-gel polymerization of resorcinol and formaldehyde in ambient conditions. A series of activated carbon aerogels (ACA-X, X = 1, 2, 3, 4, 5, and 6 h) were then prepared by CO2 activation of CA with a variation of activation time (X) for use as an electrode material for supercapacitor. Specific capacitances of CA and ACA-X electrodes were measured by cyclic voltammetry and galvanostatic charge/discharge methods in 6 M KOH electrolyte. Among the samples, ACA-5 h showed the highest BET surface area (2574 m2/g) and the highest specific capacitance (100 F/g). It was found that CO2 activation was a very efficient method for enhancing physicochemical property and supercapacitive electrochemical performance of activated carbon aerogel.
authors.forename: Eo Jin
authors.initials: EJ
authors.lastname: Lee
authors.forename: Yoon Jae
authors.initials: YJ
authors.lastname: Lee
authors.forename: Jeong Kwon
authors.initials: JK
authors.lastname: Kim
authors.forename: Ung Gi
authors.initials: UG
authors.lastname: Hong
authors.forename: Jongheop
authors.initials: J
authors.lastname: Yi
authors.forename: Jung Rag
authors.initials: JR
authors.lastname: Yoon
authors.forename: In Kyu
authors.initials: IK
authors.lastname: Song