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Issue 35, 2015
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Emulsion soft templating of carbide-derived carbon nanospheres with controllable porosity for capacitive electrochemical energy storage

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Abstract

A new approach to produce highly porous carbide-derived carbon nanospheres of 20–200 nm diameter based on a novel soft-templating technique is presented. A platinum catalyst is used for the cross-linking of liquid (allylhydrido)polycarbosilane polymer chains with para-divinylbenzene within oil-in-water miniemulsions. Quantitative implementation of the pre-ceramic polymer can be achieved allowing precise control over the resulting materials. After pyrolysis and high-temperature chlorine treatment, the resulting particles offer a spherical shape, very high specific surface area (up to 2347 m2 g−1), and large micro/mesopore volume (up to 1.67 cm3 g−1). The internal pore structure of the nanospheres is controllable by the composition of the oil phase within the miniemulsions. The materials are highly suitable to be used as supercapacitor electrodes with high specific capacitances in aqueous 1 M Na2SO4 solution (110 F g−1) and organic 1 M tetraethylammonium tetrafluoroborate in acetonitrile (130 F g−1).

Graphical abstract: Emulsion soft templating of carbide-derived carbon nanospheres with controllable porosity for capacitive electrochemical energy storage

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Publication details

The article was received on 22 May 2015, accepted on 25 Jun 2015 and first published on 25 Jun 2015


Article type: Paper
DOI: 10.1039/C5TA03730A
Citation: J. Mater. Chem. A, 2015,3, 17983-17990
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    Emulsion soft templating of carbide-derived carbon nanospheres with controllable porosity for capacitive electrochemical energy storage

    M. Oschatz, M. Zeiger, N. Jäckel, P. Strubel, L. Borchardt, R. Reinhold, W. Nickel, J. Eckert, V. Presser and S. Kaskel, J. Mater. Chem. A, 2015, 3, 17983
    DOI: 10.1039/C5TA03730A

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