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, Akihiko Hirata, T. Fujita, M. W. Chen

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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.

Original languageEnglish
Pages (from-to)18551-18557
Number of pages7
JournalNanoscale
Volume8
Issue number43
DOIs
Publication statusPublished - 2016 Nov 21
Externally publishedYes

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ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Qiu, H. J., Chen, L. Y., Ito, Y., Kang, J. L., Guo, X. W., Liu, P., Kashani, H., Hirata, A., Fujita, T., & Chen, M. W. (2016). An ultrahigh volumetric capacitance of squeezable three-dimensional bicontinuous nanoporous graphene. Nanoscale, 8(43), 18551-18557. https://doi.org/10.1039/c5nr08852f