Supercapacitive electrochemical performance of graphene-containing carbon aerogel prepared using polyethyleneimine-modified graphene oxide

• DOI: 10.1016/j.cap.2013.02.005
• Publication Date: 2013-02-19T03:33:47Z
• Authors: Yoon Jae Lee; Hai Woong Park; Gil-Pyo Kim; Jongheop Yi; In Kyu Song
• Keywords: Resorcinol; Carbon fibers

Graphene-containing carbon aerogel was prepared by a solegel polymerization of resorcinol- formaldehyde (RF) method using polyethyleneimine (PEI)-modified chemically exfoliated grapheme oxide, and its electrochemical performance as an electrode for supercapacitor was examined. The effect of PEI in the preparation of RFGO (resorcinol-formaldehyde and graphene oxide) solution on the physicochemical and electrochemical properties of graphene-containing carbon aerogel (CAPG) was investigated. For comparison, graphene-containing carbon aerogel was prepared using PEI-free graphene oxide (CAG). Graphene-free carbon aerogel (CA) was also prepared. CAPG showed the highest BET surface area (792 m 2 /g) and the largest pore volume (1.64 cm 3 /g) with well-developed porous structure. Various