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Three-dimensional strutted graphene grown by substrate-free sugar blowing for high-power-density supercapacitors
- Source :
- Nature Communications
- Publication Year :
- 2013
- Publisher :
- Springer Science and Business Media LLC, 2013.
-
Abstract
- Three-dimensional graphene architectures in the macroworld can in principle maintain all the extraordinary nanoscale properties of individual graphene flakes. However, current 3D graphene products suffer from poor electrical conductivity, low surface area and insufficient mechanical strength/elasticity; the interconnected self-supported reproducible 3D graphenes remain unavailable. Here we report a sugar-blowing approach based on a polymeric predecessor to synthesize a 3D graphene bubble network. The bubble network consists of mono- or few-layered graphitic membranes that are tightly glued, rigidly fixed and spatially scaffolded by micrometre-scale graphitic struts. Such a topological configuration provides intimate structural interconnectivities, freeway for electron/phonon transports, huge accessible surface area, as well as robust mechanical properties. The graphene network thus overcomes the drawbacks of presently available 3D graphene products and opens up a wide horizon for diverse practical usages, for example, high-power high-energy electrochemical capacitors, as highlighted in this work.<br />Three-dimensional graphene offers an ideal sheet-to-sheet connectivity of assembled graphenes, but often suffers from poor electrochemical performance. Wang et al. present a sugar-blowing technique to prepare a 3D graphene, which overcomes such problems and shows potential in supercapacitor applications.
- Subjects :
- Supercapacitor
Multidisciplinary
Materials science
Graphene
Phonon
Graphene foam
Electric Conductivity
General Physics and Astronomy
Membranes, Artificial
Nanotechnology
General Chemistry
Article
General Biochemistry, Genetics and Molecular Biology
law.invention
Capacitor
X-Ray Diffraction
law
Graphite
Electrodes
Nanoscopic scale
Graphene nanoribbons
Graphene oxide paper
Subjects
Details
- ISSN :
- 20411723
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Nature Communications
- Accession number :
- edsair.doi.dedup.....fcf6a4f47a512ebdb3d868926de9d1f8