title: Supramolecule-Inspired Fabrication of Carbon Nanoparticles In Situ Anchored Graphene Nanosheets Material for High-Performance Supercapacitors.
abstract: The remarkable electrochemical performance of graphene-based materials has drawn a tremendous amount of attention for their application in supercapacitors. Inspired by supramolecular chemistry, the supramolecular hydrogel is prepared by linking β-cyclodextrin to graphene oxide (GO). The carbon nanoparticles-anchored graphene nanosheets are then assembled after the hydrothermal reduction and carbonization of the supramolecular hydrogels; here, the β-cyclodextrin is carbonized to carbon nanoparticles that are uniformly anchored on the graphene nanosheets. Transmission electron microscopy reveals that carbon nanoparticles with several nanometers are uniformly anchored on both sides of graphene nanosheets, and X-ray diffraction spectra demonstrate that the interlayer spacing of graphene is enlarged due to the anchored nanoparticles among the graphene nanosheets. The as-prepared carbon nanoparticles-anchored graphene nanosheets material (C/r-GO-1:3) possesses a high specific capacitance (310.8 F g-1, 0.5 A g-1), superior rate capability (242.5 F g-1, 10 A g-1), and excellent cycle stability (almost 100% after 10 000 cycles, at the scan rate of 50 mV s-1). The outstanding electrochemical performance of the resulting C/r-GO-1:3 is mainly attributed to (i) the presence of the carbon nanoparticles, (ii) the enlarged interlayer spacing of the graphene sheets, and (iii) the accelerated ion transport rates toward the interior of the electrode material. The supramolecule-inspired approach for the synthesis of high-performance carbon nanoparticles-modified graphene sheets material is promising for future application in graphene-based energy storage devices.
authors.affiliation: School of Chemistry and Environment, ‡Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, and §Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), South China Normal University , Guangzhou 510006, P.R. China.
authors.forename: Yulan
authors.initials: Y
authors.lastname: Huang
authors.affiliation: School of Chemistry and Environment, ‡Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, and §Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), South China Normal University , Guangzhou 510006, P.R. China.
authors.forename: Aimei
authors.initials: A
authors.lastname: Gao
authors.affiliation: School of Chemistry and Environment, ‡Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, and §Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), South China Normal University , Guangzhou 510006, P.R. China.
authors.forename: Xiaona
authors.initials: X
authors.lastname: Song
authors.affiliation: School of Chemistry and Environment, ‡Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, and §Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), South China Normal University , Guangzhou 510006, P.R. China.
authors.forename: Dong
authors.initials: D
authors.lastname: Shu
authors.affiliation: School of Chemistry and Environment, ‡Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, and §Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), South China Normal University , Guangzhou 510006, P.R. China.
authors.forename: Fenyun
authors.initials: F
authors.lastname: Yi
authors.affiliation: School of Chemistry and Environment, ‡Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, and §Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), South China Normal University , Guangzhou 510006, P.R. China.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhong
authors.affiliation: School of Chemistry and Environment, ‡Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, and §Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), South China Normal University , Guangzhou 510006, P.R. China.
authors.forename: Ronghua
authors.initials: R
authors.lastname: Zeng
authors.affiliation: School of Chemistry and Environment, ‡Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, and §Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), South China Normal University , Guangzhou 510006, P.R. China.
authors.forename: Shixu
authors.initials: S
authors.lastname: Zhao
authors.affiliation: School of Chemistry and Environment, ‡Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, and §Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), South China Normal University , Guangzhou 510006, P.R. China.
authors.forename: Tao
authors.initials: T
authors.lastname: Meng
keywords: electrochemical behavior; graphene; supercapacitors; supramolecular; β-cyclodextrin