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Block Copolymer Assisted Fabrication of Graphene/Carbon Nanotube Hybrid Architectures and Their Application in Supercapacitors

Published online by Cambridge University Press:  20 July 2012

Aaron S. George ,
Maziar Ghazinejad ,
Wei Wang ,
Isaac Ruiz ,
Mihrimah Ozkan  and
Cengiz S. Ozkan
Aaron S. George
Affiliation:
Materials Science and Engineering Program, University of California Riverside, CA 92521, USA
Maziar Ghazinejad
Affiliation:
Department of Mechanical Engineering, University of California Riverside, CA 92521, USA Department of Electrical Engineering, University of California Riverside, CA 92521, USA
Wei Wang
Affiliation:
Materials Science and Engineering Program, University of California Riverside, CA 92521, USA Department of Electrical Engineering, University of California Riverside, CA 92521, USA
Isaac Ruiz
Affiliation:
Department of Electrical Engineering, University of California Riverside, CA 92521, USA
Mihrimah Ozkan
Affiliation:
Materials Science and Engineering Program, University of California Riverside, CA 92521, USA Department of Electrical Engineering, University of California Riverside, CA 92521, USA
Cengiz S. Ozkan
Affiliation:
Materials Science and Engineering Program, University of California Riverside, CA 92521, USA Department of Mechanical Engineering, University of California Riverside, CA 92521, USA
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Abstract

Sustainable energy is currently limited by the ability of materials to store energy and deliver it on demand. Allotropes of carbon are attractive for their potential for use in energy storage due to low weight, high chemical stability and low production cost. Carbon nanotubes and graphene can be combined to provide an effective three-dimensional material with high conductivity and high surface area. We demonstrate the use of block copolymers to obtain patterned arrays of iron nanoparticles which give rise to ordered carbon nanotubes with good size distribution. A one-step chemical vapor deposition process for large-area fabrication of the graphene and carbon nanotube hybrid structure is described. Following chemical vapor deposition the hybrid material is demonstrated in a supercapacitor device. The fabricated supercapacitor exhibits high electrical conductivity, and has potential for extremely high energy storage capability.

Keywords

chemical vapor deposition (CVD) (deposition)energy storagenanostructure
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1440: Symposium O – Next-Generation Energy Storage Materials and Systems , 2012 , mrss12-1440-o09-18
Copyright
Copyright © Materials Research Society 2012

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