title: In situ chemical synthesis of ruthenium oxide/reduced graphene oxide nanocomposites for electrochemical capacitor applications.
abstract: An in situ chemical synthesis approach has been developed to prepare ruthenium oxide/reduced graphene oxide (RGO) nanocomposites. It is found that as the C/O ratio increases, the number density of RuO2 nanoparticles decreases, because the chemical interaction between the Ru ions and the oxygen-containing functional groups provides anchoring sites where the nucleation of particles takes place. For electrochemical capacitor applications, the microwave-hydrothermal process was carried out to improve the conductivity of RGO in RuO2/RGO nanocomposites. The significant improvement in capacitance and high rate capability might result from the RuO2 nanoparticles used as spacers that make the interior layers of the reduced graphene oxide electrode available for electrolyte access.
authors.affiliation: Department of Material Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-ku, Seoul, Korea 120-749.
authors.forename: Ji-Young
authors.initials: JY
authors.lastname: Kim
authors.forename: Kwang-Heon
authors.initials: KH
authors.lastname: Kim
authors.forename: Seung-Beom
authors.initials: SB
authors.lastname: Yoon
authors.forename: Hyun-Kyung
authors.initials: HK
authors.lastname: Kim
authors.forename: Sang-Hoon
authors.initials: SH
authors.lastname: Park
authors.forename: Kwang-Bum
authors.initials: KB
authors.lastname: Kim