DocumentCode :
2761116
Title :
Hydrothermal Synthesis of RuO2??xH2O/Graphene Hybrid Nanocomposite for Supercapacitor Application
Author :
Jaidev, Jaidev ; Jafri, R. Imran ; Ramaprabhu, S.
Author_Institution :
Dept. of Phys., Indian Inst. of Technol. Madras (IITM), Chennai, India
fYear :
2011
fDate :
8-10 Dec. 2011
Firstpage :
1
Lastpage :
5
Abstract :
Herein we report a facile approach for synthesis of well dispersed hydrated ruthenium oxide nanoparticles onto the surface of hydrogen exfoliated graphene (HEG) sheets via hydrothermal synthesis route. The as prepared hybrid nanocomposite (RuO2·xH2O/HEG) was characterized by X-ray diffraction analysis (XRD), field emission scanning electron microscopy (FESEM) and high resolution transmission electron microscopy (HRTEM). A symmetrical supercapacitor was fabricated and the electrochemical performance of this model supercapacitor cell was investigated by cyclic voltammetry (CV), chronopotentiometry (CP) and impedance spectroscopy (EIS) in 1.0 M H2SO4 solution. The hybrid nanocomposite shows a maximum specific capacitance of 154 F/g and energy density of about llWh/kg at a specific discharge current of 1 A/g (20 wt% Ru loading). The composite also shows a maximum power density of 5 kW/kg and coulombic efficiency of 97% for a specific discharge current of 10 A/g.
Keywords :
graphene; nanocomposites; nanoparticles; supercapacitors; X-ray diffraction analysis; chronopotentiometry; coulombic efficiency; cyclic voltammetry; electrochemical performance; energy density; field emission scanning electron microscopy; graphene hybrid nanocomposite; high resolution transmission electron microscopy; hydrogen exfoliated graphene sheets; hydrothermal synthesis route; impedance spectroscopy; power density; supercapacitor application; supercapacitor cell; well dispersed hydrated ruthenium oxide nanoparticles; Capacitance; Carbon; Electrodes; Materials; Nanoparticles; Supercapacitors; X-ray diffraction;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nanoscience, Technology and Societal Implications (NSTSI), 2011 International Conference on
Conference_Location :
Bhubaneswar
Print_ISBN :
978-1-4577-2035-2
Type :
conf
DOI :
10.1109/NSTSI.2011.6111794
Filename :
6111794
Link To Document :
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