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Synthesis of Three Dimensional Carbon Nanostructure Foams for Supercapacitors

Published online by Cambridge University Press:  30 July 2012

Wei Wang
Affiliation:
Materials Science and Engineering, University of California, Riverside, CA 92521, U.S.A. Electrical Engineering, University of California, Riverside, CA 92521, U.S.A.
Shirui Guo
Affiliation:
Chemistry, University of California, Riverside, CA 92521, U.S.A.
Isaac Ruiz
Affiliation:
Electrical Engineering, University of California, Riverside, CA 92521, U.S.A.
Mihrimah Ozkan
Affiliation:
Chemistry, University of California, Riverside, CA 92521, U.S.A. Electrical Engineering, University of California, Riverside, CA 92521, U.S.A.
Cengiz S. Ozkan
Affiliation:
Materials Science and Engineering, University of California, Riverside, CA 92521, U.S.A. Mechanical Engineering, University of California, Riverside, CA92521, U.S.A.
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Abstract

In this work, we demonstrated the growth of three dimensional graphene/carbon nanotubes hybrid carbon nanostructures on metal foam through a one-step chemical vapor deposition (CVD). The as-grown three dimensional carbon nanostructure foams can be potentially used as the electrodes of energy storage devices such as supercapacitors and batteries. During the CVD process, the carbon nanostructures are grown on highly porous nickel foam to form a high surface area 3-D carbon nanostructure by introducing a mixture precursor gases (H2, C2H2). The surface morphology was investigated by scanning electron microscopy (SEM) and the results demonstrated relatively homogeneous and densely packed 3-D carbon nanostructure. The quality was characterized by Raman spectroscopy. To further increase the capacitive capability the supercapacitors were fabricated based on the electrodes of carbon nanostructure foam and cyclic voltammetry, charge-discharge, and electrochemical impedance spectroscopy (EIS) were conducted to determine their performance.

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Copyright
Copyright © Materials Research Society 2012

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