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Title: Catalyst-free growth of carbon nanotube arrays directly on Inconel (R) substrates for electrochemical carbon-based electrodes
Author: Silva, Ricardo Manuel
Bastos, Alexandre Cunha
Oliveira, Filipe Jose
Conte, Donato Ercole
Fan, Yafei
Pinna, Nicola
Silva, Rui Ferreira
Issue Date: 2015
Abstract: Vertically aligned carbon nanotubes (VACNTs) were grown directly on a pretreated Inconel (R) metallic substrate by thermal chemical vapor deposition without the need of catalyst addition. This experimental approach allows the substrate surface to act as both the catalyst and support for the CNTs growth therefore enhancing the connection between the two. It was found that uniformly dispersed and densely packed nano-sized, intrinsic catalytic particles, generated during the annealing pretreatment, allow the growth of the vertically aligned CNTs. Scanning electron microscopy, transmission electron microscopy and Raman spectroscopy were used to assess the quality and the nature of the formed CNTs. Electrochemical measurements were performed to evaluate the possibility to use the Inconel/VACNTs system as an electrode material. As a proof of concept, the capacitive behavior of the VACNTs arrays coupled to the Inconel substrate as the active electrode material and the current collector, respectively, in supercapacitors is demonstrated.
Peer review: yes
DOI: 10.1039/c5ta03734d
ISSN: 2050-7488
Publisher Version: 10.1039/c5ta03734d
Appears in Collections:CICECO - Artigos

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