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Open AccessArticle

Single-Step Synthesis of Vertically Aligned Carbon Nanotube Forest on Aluminium Foils

1
NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France
2
NAWA Technologies, Chez STMicroelectronics, 190 avenue Célestin Coq, Cedex 13106 Rousset, France
3
Laboratoire de Physicochimie des Polymères et des Interfaces (LPPI, EA 2528), Université de Cergy-Pontoise, Cedex 95031 Neuville-sur-Oise, France
4
LSI, CEA/DRF/IRAMIS, École Polytechnique, CNRS, Institut Polytechnique de Paris, 91128 Palaiseau, France
*
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(11), 1590; https://doi.org/10.3390/nano9111590 (registering DOI)
Received: 17 October 2019 / Revised: 3 November 2019 / Accepted: 4 November 2019 / Published: 9 November 2019
Vertically aligned carbon nanotube (VACNT) forests are promising for supercapacitor electrodes, but their industrialisation requires a large-scale cost-effective synthesis process suitable to commercial aluminium (Al) foils, namely by operating at a low temperature (<660 °C). We show that Aerosol-Assisted Catalytic Chemical Vapour Deposition (CCVD), a single-step roll-to-roll compatible process, can be optimised to meet this industrial requirement. With ferrocene as a catalyst precursor, acetylene as a carbon source and Ar/H2 as a carrier gas, clean and dense forests of VACNTs of about 10 nm in diameter are obtained at 615 °C with a growth rate up to 5 µm/min. Such novel potentiality of this one-step CCVD process is at the state-of-the-art of the multi-step assisted CCVD processes. To produce thick samples, long synthesis durations are required, but growth saturation occurs that is not associated with a diffusion phenomenon of iron in aluminium substrate. Sequential syntheses show that the saturation trend fits a model of catalytic nanoparticle deactivation that can be limited by decreasing acetylene flow, thus obtaining sample thickness up to 200 µm. Cyclic voltammetry measurements on binder-free VACNT/Al electrodes show that the CNT surface is fully accessible to the ionic liquid electrolyte, even in these dense VACNT forests. View Full-Text
Keywords: vertically aligned carbon nanotubes; aerosol-assisted catalytic chemical vapour deposition; Al foils; energy dispersive X-ray spectrometry; supercapacitors vertically aligned carbon nanotubes; aerosol-assisted catalytic chemical vapour deposition; Al foils; energy dispersive X-ray spectrometry; supercapacitors
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MDPI and ACS Style

Nassoy, F.; Pinault, M.; Descarpentries, J.; Vignal, T.; Banet, P.; Coulon, P.-E.; Goislard de Monsabert, T.; Hauf, H.; Aubert, P.-H.; Reynaud, C.; Mayne-L’Hermite, M. Single-Step Synthesis of Vertically Aligned Carbon Nanotube Forest on Aluminium Foils. Nanomaterials 2019, 9, 1590.

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