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

H. J. Qiu, Luyang Chen, Y. Ito, J. L. Kang, X. W. Guo, P. Liu, H. Kashani, A. Hirata, T. Fujita, M. W. Chen

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

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

ASJC Scopus subject areas

  • Materials Science(all)

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