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Co9S8 nanoflakes on Graphene (Co9S8/G) nanocomposites for high
performance Supercapacitors
Rajendran Ramachandrana, Murugan Saranyaa, Chella Santhosha, Venugopal Velmurugana, Bala
P.C.Raghupathyb,*, Soon Kwan Jeongc,* and Andrews Nirmala Gracea,c,*
aCentre for Nanotechnology Research, VIT University, Vellore - 632 014, Tamil Nadu, India.
b Research & Advanced Engineering Division (Materials), Renault Nissan Technology &
Business Center India (P) Ltd., Chennai.
c Climate Change Technology Research Division, Korea Institute of Energy Research, Yuseong-
gu, Daejeon 305-343, South Korea.
* To whom correspondence should be addressed:
E-mail: [email protected]; [email protected]; [email protected].
Tel.: (+91) 416 2202412, (+82) 42 860 3367, Fax: (+91) 416 2243092, (+82) 42-860-3134.
Electronic Supplementary Material (ESI) for RSC Advances.This journal is © The Royal Society of Chemistry 2014
Fig. S1. Thermogravimetric TGA and DTA graph of graphene
Fig.S2. FE-SEM and mapping images of pure Co9S8
Fig.S3. FE-SEM and mapping images of graphene
Fig.S4. FE-SEM and mapping images of Co9S8/G-d
0 50 100 150 200 250 300 350-0.1
0.0
0.1
0.2
0.3
1.6 A g-1
1.8 A g-1
Time (sec)
Pote
ntia
l (V
) vs.
Ag/
AgC
l
Fig. S5.Galvanostatic charge/discharge behavior of Co9S8/G-d composite at different current densities.
Time (sec)
Pote
ntia
l (V
) vs.
Ag/
AgC
l
0 10 20 30 40 50-0.1
0.0
0.1
0.2
0.3
1.6 A g-1
1.8 A g-1
Fig. S6.Galvanostatic charge/discharge behavior of Co9S8/G-d composite at different current densities
