Preparation of high-surface-area carbon nanoparticle/graphene composites

A method has been developed for synthesizing high-surface-area carbon nanoparticle/graphene composites. Functionalized carbon nanoparticles were anchored to the graphene planes and function as spacers to prevent the restacking of graphene sheets during drying. The composite has a layered structure i...

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Bibliographic Details
Published in:Carbon (New York) 2012-08, Vol.50 (10), p.3845-3853
Main Authors: Wang, Mei-xian, Liu, Qi, Sun, Hong-fang, Stach, Eric A., Zhang, Hangyu, Stanciu, Lia, Xie, Jian
Format: Article
Language:English
Subjects:
Carbon
Chemistry
Colloidal state and disperse state
Cross-disciplinary physics: materials science
rheology
Drying
Exact sciences and technology
Fullerenes and related materials
diamonds, graphite
General and physical chemistry
Graphene
Liquids
Materials science
Nanocomposites
Nanomaterials
Nanoparticles
Nanostructure
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Physics
Porous materials
Specific materials
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Summary:A method has been developed for synthesizing high-surface-area carbon nanoparticle/graphene composites. Functionalized carbon nanoparticles were anchored to the graphene planes and function as spacers to prevent the restacking of graphene sheets during drying. The composite has a layered structure in which functionalized carbon nanoparticles are sandwiched between graphene stacks. This layering leads to a porous structure with a specific surface area as high as 1256m2/g. Such a structure provides easy access to both sides of the graphene for either gas or liquid species and allows their fast transfer. A specific capacitance as high as 324.6F/g at a current density of 0.3A/g was achieved using the composites in a supercapacitor.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2012.04.026