Synthesis and Capacitive Properties of C/MWCNTs Composites

doi:10.7503/cjcu20130105

Abstract

Abstract:

Carbon/multi-wall carbon nanotubes(C/MWCNTs) composites were synthesized by combination of cyclodextrin wrapping and heat treatment techniques. The application of composites as electrode material for supercapacitors was also demonstrated. The morphology and structure of the composites were characterized by scanning electron microscopy(SEM), transmission electron microscopy(TEM), X-ray diffraction(XRD) and Raman spectra. The capacitive behavior of the composites was investigated by cyclic voltammetry and galvanostatic charge-discharge measurements. The experimental results show that the as-prepared composite exhibits better electrochemical performances than corresponding C and MWCNTs samples. The specific capacitance can reach to 145 F/g, and has no obvious decrease after 3000 cycles at 1 A/g. The results indicate that the effective combination of MWCNTs with other materials is useful for designing the advanced electrode material for supercapacitors.

Key words: Supercapacitor, Carbon nanotubes, Carbon, Composite electrode material

CLC Number:

O646
O613.71

TrendMD:

FU Yu, SUN Li, TIAN Chun-Gui, LIN Hai-Bo. Synthesis and Capacitive Properties of C/MWCNTs Composites[J]. Chem. J. Chinese Universities, 2013, 34(10): 2389.

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