Synthesis of C₆₀/Graphene Composite as Electrode in Supercapacitors

Abstract

In this paper, fullerenes (C₆₀)/graphene composite was synthesized to report. The C₆₀/graphene composite was constructed first with graphene oxide and Li-functionalized C₆₀ particles by a facile solution method. The synthesized samples were characterized by Raman spectroscopy, X-ray diffraction, transmission electron microscopy, Fourier transform infrared measurements, and X-ray photoelectron spectroscopy analysis. It was revealed that the C₆₀ particles attached onto the surface of graphene. The prepared C₆₀/graphene composite was employed as electrode in supercapacitors. It was found that the specific capacitance of C₆₀/graphene composite reached 135.36 F g⁻¹ at the current density of 1 A g⁻¹ compared to pure graphene as electrode (101.88 F g⁻¹). This composite material was also exhibited a remarkable retention rate of 92.35% after 1000 charge/discharge cycles. This result showed that the composite was a promising material for supercapacitor electrode.

Keywords::

• graphene
• carbon materials
• fullerenes
• nanocomposites
• supercapacitors

Additional information

Funding

The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (20603024) and the Open Project of Key Lab Adv. Energy Mat. Chem. (Nankai University) (KLAEMC-OP201201).