Issue 35, 2015

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

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

Supplementary files

Article information

Article type
Paper
Submitted
22 May 2015
Accepted
25 Jun 2015
First published
25 Jun 2015
This article is Open Access
Creative Commons BY license

J. Mater. Chem. A, 2015,3, 17983-17990

Author version available

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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