Three-dimensional strutted graphene grown by substrate-free sugar blowing for high-power-density supercapacitors

Xuebin Wang (), Yuanjian Zhang, Chunyi Zhi, Xi Wang, Daiming Tang, Yibin Xu, Qunhong Weng, Xiangfen Jiang, Masanori Mitome, Dmitri Golberg and Yoshio Bando ()
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Xuebin Wang: World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS)
Yuanjian Zhang: School of Chemistry and Chemical Engineering, Southeast University
Chunyi Zhi: City University of Hong Kong
Xi Wang: World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS)
Daiming Tang: World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS)
Yibin Xu: NIMS
Qunhong Weng: World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS)
Xiangfen Jiang: World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS)
Masanori Mitome: World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS)
Dmitri Golberg: World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS)
Yoshio Bando: World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS)

Nature Communications, 2013, vol. 4, issue 1, 1-8

Abstract: 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.

Date: 2013
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DOI: 10.1038/ncomms3905

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