Millimeter-tall carbon nanotube arrays grown on aluminum substrates

Shota Miura, Yu Yoshihara, Mayu Asaka, Kei Hasegawa, Hisashi Sugime, Aun Ota, Hisayoshi Oshima, Suguru Noda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Millimeter-tall vertically aligned carbon nanotubes (VA-CNTs) were grown directly on Al substrates. Atmospheric pressure chemical vapor deposition is performed at 600 °C, which is well below the melting point of Al (660 °C), using Fe catalyst and C2H2 as a highly reactive carbon feedstock. The CNT height was sensitive to the C2H2 concentration and 0.06 vol% was optimum for balanced growth rate and catalyst lifetime, yielding 0.06 mm-tall VA-CNTs in 2 h. The CO2 addition at 1.8 vol% to the C2H2/Ar gas significantly enhanced the CNT growth, yielding 1.1 mm-tall VA-CNTs in 12 h. CO2 shows this remarkable effect when added in large excess to C2H2, differently from the well-known method of “small addition of water.” Moreover, the resulting VA-CNTs showed electrical contact with the Al sheets with resistance of ≤0.7 Ω cm−2. The effect of CO2 is systematically studied and discussed.

Original languageEnglish
Pages (from-to)834-842
Number of pages9
JournalCarbon
Volume130
DOIs
Publication statusPublished - 2018 Apr 1

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Carbon Nanotubes
Aluminum
Carbon nanotubes
Substrates
Catalysts
Feedstocks
Atmospheric pressure
Melting point
Chemical vapor deposition
Carbon
Gases
Water

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Millimeter-tall carbon nanotube arrays grown on aluminum substrates. / Miura, Shota; Yoshihara, Yu; Asaka, Mayu; Hasegawa, Kei; Sugime, Hisashi; Ota, Aun; Oshima, Hisayoshi; Noda, Suguru.

In: Carbon, Vol. 130, 01.04.2018, p. 834-842.

Research output: Contribution to journalArticle

Miura, S, Yoshihara, Y, Asaka, M, Hasegawa, K, Sugime, H, Ota, A, Oshima, H & Noda, S 2018, 'Millimeter-tall carbon nanotube arrays grown on aluminum substrates', Carbon, vol. 130, pp. 834-842. https://doi.org/10.1016/j.carbon.2018.01.075
Miura, Shota ; Yoshihara, Yu ; Asaka, Mayu ; Hasegawa, Kei ; Sugime, Hisashi ; Ota, Aun ; Oshima, Hisayoshi ; Noda, Suguru. / Millimeter-tall carbon nanotube arrays grown on aluminum substrates. In: Carbon. 2018 ; Vol. 130. pp. 834-842.
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AU - Sugime, Hisashi

AU - Ota, Aun

AU - Oshima, Hisayoshi

AU - Noda, Suguru

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