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Issue 73, 2017, Issue in Progress
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Cellulose-derived carbon nanofibers/graphene composite electrodes for powerful compact supercapacitors

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Abstract

Herein, we demonstrate a unique supercapacitor composite electrode material that is originated from a sustainable cellulosic precursor via simultaneous one-step carbonization/reduction of cellulose/graphene oxide mats at 800 °C. The resulting freestanding material consists of mechanically stable carbon nanofibrous (CNF, fiber diameter 50–500 nm) scaffolds tightly intertwined with highly conductive reduced graphene oxide (rGO) sheets with a thickness of 1–3 nm. The material is mesoporous and has electrical conductivity of 49 S cm−1, attributed to the well-interconnected graphene layers. The electrochemical evaluation of the CNF/graphene composite electrodes in a supercapacitor device shows very promising volumetric values of capacitance, energy and power density (up to 46 F cm−3, 1.46 W h L−1 and 1.09 kW L−1, respectively). Moreover, the composite electrodes retain an impressive 97% of the initial capacitance over 4000 cycles. With these superior properties, the produced composite electrodes should be the “looked-for” components in compact supercapacitors used for increasingly popular portable electronics and hybrid vehicles.

Graphical abstract: Cellulose-derived carbon nanofibers/graphene composite electrodes for powerful compact supercapacitors

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Publication details

The article was received on 08 Jul 2017, accepted on 02 Sep 2017 and first published on 28 Sep 2017


Article type: Paper
DOI: 10.1039/C7RA07533B
Citation: RSC Adv., 2017,7, 45968-45977
  • Open access: Creative Commons BY-NC license
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    Cellulose-derived carbon nanofibers/graphene composite electrodes for powerful compact supercapacitors

    V. Kuzmenko, N. Wang, M. Haque, O. Naboka, M. Flygare, K. Svensson, P. Gatenholm, J. Liu and P. Enoksson, RSC Adv., 2017, 7, 45968
    DOI: 10.1039/C7RA07533B

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