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Issue 28, 2015
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Synthesis of tungsten carbide and tungsten disulfide on vertically aligned multi-walled carbon nanotube forests and their application as non-Pt electrocatalysts for the hydrogen evolution reaction

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Abstract

Direct growth of tungsten carbide and sulfide on vertically aligned carbon nanotubes (CNTs) is demonstrated for a facile construction of three-dimensional electrocatalyst nanostructures. A thin layer of tungsten was first deposited on free-standing CNT forests followed by annealing in an inert atmosphere or in the vapor of sulfur for obtaining tungsten carbide or disulfide, respectively. Besides structural characterization of the composites by means of scanning and transmission electron microscopy, Raman spectroscopy and X-ray diffraction, the produced CNT–catalyst composites are also evaluated in the hydrogen evolution reaction and compared to Pt as well as to the original and W coated CNT forests. The results indicate that the template growth of catalyst nanostructures on vertically aligned CNT forests is a suitable approach for catalytic electrode fabrication, which for example may find use in the hydrogen evolution reaction.

Graphical abstract: Synthesis of tungsten carbide and tungsten disulfide on vertically aligned multi-walled carbon nanotube forests and their application as non-Pt electrocatalysts for the hydrogen evolution reaction

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Publication details

The article was received on 21 Apr 2015, accepted on 20 May 2015 and first published on 21 May 2015


Article type: Paper
DOI: 10.1039/C5TA02908B
Citation: J. Mater. Chem. A, 2015,3, 14609-14616
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    Synthesis of tungsten carbide and tungsten disulfide on vertically aligned multi-walled carbon nanotube forests and their application as non-Pt electrocatalysts for the hydrogen evolution reaction

    J. Lin, O. Pitkänen, J. Mäklin, R. Puskas, A. Kukovecz, A. Dombovari, G. Toth and K. Kordas, J. Mater. Chem. A, 2015, 3, 14609
    DOI: 10.1039/C5TA02908B

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