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Issue 86, 2015
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Preparation of hierarchically porous carbon nanofoams for electrode materials of supercapacitors

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Abstract

Hierarchically porous carbon nanofoams (CNFs) with uniform cavity and highly porous skeleton have been prepared via the formation of core–shell organosilica nanoparticles in one-pot reaction and subsequent Friedel–Crafts chemistry. The porosity of the CNFs, which have macroporous cavity (∼50 nm), mesoporous windows (∼12 nm) between adjacent cavities and mesoporous skeleton (∼3 nm), were facially tuned by varying the amount of phenyltriethoxysilane (PTES) used in the first step. CNFs with high surface area (>1100 m2 g−1), large pore volume (∼2 cm3 g−1) and partially graphitized skeleton exhibited good performances as supercapacitor electrode materials. The specific capacitance of the porous CNFs reached 170 F g−1 at a current density of 0.5 A g−1 in an aqueous electrolyte.

Graphical abstract: Preparation of hierarchically porous carbon nanofoams for electrode materials of supercapacitors

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Publication details

The article was received on 07 Jul 2015, accepted on 07 Aug 2015 and first published on 07 Aug 2015


Article type: Paper
DOI: 10.1039/C5RA13235E
Citation: RSC Adv., 2015,5, 70297-70301
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    Preparation of hierarchically porous carbon nanofoams for electrode materials of supercapacitors

    Y. Zhang, Y. Wang and A. Hu, RSC Adv., 2015, 5, 70297
    DOI: 10.1039/C5RA13235E

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