Synthesis of Chemically Bonded Graphene/Carbon Nanotube Composites and their Application in Large Volumetric Capacitance Supercapacitors

Chemically bonded graphene/carbon nanotube composites as flexible supercapacitor electrode materials are synthesized by amide bonding. Carbon nanotubes attached along the edges and onto the surface of graphene act as spacers to increase the electrolyte‐accessible surface area. Our lamellar structure...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2013-12, Vol.25 (47), p.6854-6858
Main Authors: Jung, Naeyoung, Kwon, Soongeun, Lee, Dongwook, Yoon, Dong-Myung, Park, Young Min, Benayad, Anass, Choi, Jae-Young, Park, Jong Se
Format: Article
Language:English
Subjects:
Bonding
chemically bonded
Electric Capacitance
electrical double-layer capacitors (EDLC)
Electrochemical Techniques
Electrodes
graphene
Graphite - chemistry
Nanotubes, Carbon - chemistry
Oxides - chemistry
supercapacitors
volumetric capacitance
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Summary:Chemically bonded graphene/carbon nanotube composites as flexible supercapacitor electrode materials are synthesized by amide bonding. Carbon nanotubes attached along the edges and onto the surface of graphene act as spacers to increase the electrolyte‐accessible surface area. Our lamellar structure electrodes demonstrate the largest volumetric capacitance (165 F cm‐3) ever shown by carbon‐based electrodes.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201302788