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Issue 4, 2017
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Bipolar nitrogen-doped graphene frameworks as high-performance cathodes for lithium ion batteries

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Abstract

Hierarchically porous nitrogen-doped graphene frameworks (N-GFs) are fabricated through the ice-templating of GO with polyethylenimine and the thermal treatment of the resultant hybrids. As cathode materials in lithium ion batteries (LIBs), the obtained N-GFs exhibit an outstanding specific capacity of 379 mA h g−1 at 0.5 A g−1 for 2500 cycles. Even at an ultrahigh current density of 5 A g−1, the N-GFs maintain a capacity of 94 mA h g−1, superior to that of most reported LIB cathode materials. The experimental results and quantum mechanics calculations suggest that pyridinic-like N and pyridinic N-oxide in graphene are responsible for the excellent cathodic performance of the bipolar N-GFs by providing fast surface faradaic reactions with both p- and n-doped states.

Graphical abstract: Bipolar nitrogen-doped graphene frameworks as high-performance cathodes for lithium ion batteries

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Publication details

The article was received on 22 Oct 2016, accepted on 30 Nov 2016 and first published on 01 Dec 2016


Article type: Paper
DOI: 10.1039/C6TA09161J
Citation: J. Mater. Chem. A, 2017,5, 1588-1594
  • Open access: Creative Commons BY-NC license
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    Bipolar nitrogen-doped graphene frameworks as high-performance cathodes for lithium ion batteries

    Y. Huang, D. Wu, A. Dianat, M. Bobeth, T. Huang, Y. Mai, F. Zhang, G. Cuniberti and X. Feng, J. Mater. Chem. A, 2017, 5, 1588
    DOI: 10.1039/C6TA09161J

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