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 language | English |
|---|---|
| Pages (from-to) | 834-842 |
| Number of pages | 9 |
| Journal | Carbon |
| Volume | 130 |
| DOIs | |
| Publication status | Published - 2018 Apr 1 |
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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 journal › Article
}
TY - JOUR
T1 - Millimeter-tall carbon nanotube arrays grown on aluminum substrates
AU - Miura, Shota
AU - Yoshihara, Yu
AU - Asaka, Mayu
AU - Hasegawa, Kei
AU - Sugime, Hisashi
AU - Ota, Aun
AU - Oshima, Hisayoshi
AU - Noda, Suguru
PY - 2018/4/1
Y1 - 2018/4/1
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=85041461047&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2018.01.075
DO - 10.1016/j.carbon.2018.01.075
M3 - Article
AN - SCOPUS:85041461047
VL - 130
SP - 834
EP - 842
JO - Carbon
JF - Carbon
SN - 0008-6223
ER -