TITLE:
Synergistic Effect of Fullerene-Capped Gold Nanoparticles on Graphene Electrochemical Supercapacitors
AUTHORS:
Virginia Yong, H. Thomas Hahn
KEYWORDS:
Fullerenes; Gold Nanoparticles; Graphene; Supercapacitors; Energy Storage; Electrochemistry; Self-Assembly; Nanocomposites
JOURNAL NAME:
Advances in Nanoparticles,
Vol.2 No.1,
February
19,
2013
ABSTRACT:
We report the synthesis of graphene/fullerene-capped gold nanoparticle nanocomposite film which was used to construct supercapacitor electrodes. The fullerene-based self-assembled monolayers on gold nanoparticles (AuNPs) were attained via the fullerene(C60)-gold interaction. The fullerene-capped AuNPs effectively separated the graphene sheets preventing aggregation. A synergistic effect was observed—the specific capacitance of graphene/fullerene-capped AuNP electrode is197 F/g, which is higher than that of graphene electrode (31 F/g), graphene/AuNP electrode (126 F/g), and graphene/fullerene electrode (118 F/g). The results render a novel route of synthesis and modification of graphene-based materials for the construction of electrochemical energy storage devices.