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

  • A new approach to produce carbide-derived carbon nanospheres of 20-200 nm in diameter based on a novel soft-templating technique is presented. Platinum catalysis 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, resulting particles offer ideal spherical shape, very high specific surface area (up to 2347 m 2 /g), and large micro/mesopore volume (up to 1.67 cm 3 /g). The internal pore structure of the nanospheres is controllable by the composition of the oil phase within the miniemulsions. The materials are highly suitable for electrochemical double-layer capacitors with high specific capacitances in aqueous 1 M Na 2 SO 4 solution (110 F/g) and organic 1 M tetraethylammonium tetrafluoroborate in acetonitrile (130 F/g).

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Document Type:Article
Author:Martin OschatzORCiD, Marco ZeigerORCiD, Nicolas JäckelORCiD, Patrick Strubel, Lars BorchardtORCiD, Romy Reinhold, Winfried Nickel, Jürgen Eckert, Volker PresserORCiD, Stefan Kaskel
Parent Title (English):Journal of Materials Chemistry A
First Page:17983
Last Page:17990
Year of first Publication:2015
Date of final exam:2015/06/25
Release Date:2022/11/18
Impact:08.262 (2015)
Funding Information:German Research Foundation (DFG), project “Adsorption kinetics in hierarchical carbide-derived porous carbon materials” (KA 1698/18-1). German Academic Exchange Service (DAAD). German Federal Ministry for Research and Education (BMBF), nanoEES3D project: award number 03EK3013.
Open Access:Open Access
Signature:INM 2015/73
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International