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Issue 43, 2016
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An ultrahigh volumetric capacitance of squeezable three-dimensional bicontinuous nanoporous graphene

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Abstract

Graphene with a large specific surface area and high conductivity has a large specific capacitance. However, its volumetric capacitance is usually very low because the restacking of 2D graphene sheets leads to the loss of the large ion-accessible surface area. Here we report squeezable bicontinuous nanoporous nitrogen-doped graphene, which is extremely flexible and can tolerate large volume contraction by mechanical compression without the face-to-face restacking occurring. The compressed nanoporous N-doped graphene with a large ion accessible surface area and high conductivity shows an ultrahigh volumetric capacitance of ∼300 F cm−3 together with excellent cycling stability and high rate performance.

Graphical abstract: An ultrahigh volumetric capacitance of squeezable three-dimensional bicontinuous nanoporous graphene

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Supplementary files

Article information


Submitted
14 Sep 2016
Accepted
09 Oct 2016
First published
10 Oct 2016

Nanoscale, 2016,8, 18551-18557
Article type
Paper

An ultrahigh volumetric capacitance of squeezable three-dimensional bicontinuous nanoporous graphene

H.-J. Qiu, L. Y. Chen, Y. Ito, J. L. Kang, X. W. Guo, P. Liu, H. Kashani, A. Hirata, T. Fujita and M. W. Chen, Nanoscale, 2016, 8, 18551
DOI: 10.1039/C5NR08852F

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