Electrochemical characterization of carbon nanotube forests grown on copper foil using transition metal catalysts

G. Atthipalli, Y. Tang, A. Star, Jennifer Lynn Gray

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Growth of vertical, multiwalled carbon nanotubes (CNTs) on bulk copper foil substrates can be achieved by sputtering either Ni or Inconel thin films on Cu substrates followed by thermal chemical vapor deposition using a xylene and ferrocene mixture. During CVD growth, Fe nanoparticles from the ferrocene act as a vapor phase delivered catalyst in addition to the transition metal thin film, which breaks up into islands. Both the thin film and iron are needed for dense and uniform growth of CNTs on the copper substrates. The benefits of this relatively simple and cost effective method of directly integrating CNTs with highly conductive copper substrates are the resulting high density of nanotubes that do not require the use of additional binders and the potential for low contact resistance between the nanotubes and the substrate. This method is therefore of interest for charge storage applications such as double layer capacitors. Inconel thin films in conjunction with Fe from ferrocene appear to work better in comparison to Ni thin films in terms of CNT density and charge storage capability. We report here the power density and specific capacitance values of the double layer capacitors developed from the CNTs grown directly on copper substrates.

Original languageEnglish (US)
Pages (from-to)1651-1655
Number of pages5
JournalThin Solid Films
Volume520
Issue number5
DOIs
StatePublished - Dec 30 2011

Fingerprint

Carbon Nanotubes
Metal foil
Transition metals
Copper
foils
Carbon nanotubes
transition metals
carbon nanotubes
catalysts
copper
Catalysts
Substrates
Thin films
thin films
Inconel (trademark)
electrochemical capacitors
Nanotubes
Chemical vapor deposition
nanotubes
Capacitors

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

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Electrochemical characterization of carbon nanotube forests grown on copper foil using transition metal catalysts. / Atthipalli, G.; Tang, Y.; Star, A.; Gray, Jennifer Lynn.

In: Thin Solid Films, Vol. 520, No. 5, 30.12.2011, p. 1651-1655.

Research output: Contribution to journalArticle

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AU - Atthipalli, G.

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AU - Star, A.

AU - Gray, Jennifer Lynn

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AB - Growth of vertical, multiwalled carbon nanotubes (CNTs) on bulk copper foil substrates can be achieved by sputtering either Ni or Inconel thin films on Cu substrates followed by thermal chemical vapor deposition using a xylene and ferrocene mixture. During CVD growth, Fe nanoparticles from the ferrocene act as a vapor phase delivered catalyst in addition to the transition metal thin film, which breaks up into islands. Both the thin film and iron are needed for dense and uniform growth of CNTs on the copper substrates. The benefits of this relatively simple and cost effective method of directly integrating CNTs with highly conductive copper substrates are the resulting high density of nanotubes that do not require the use of additional binders and the potential for low contact resistance between the nanotubes and the substrate. This method is therefore of interest for charge storage applications such as double layer capacitors. Inconel thin films in conjunction with Fe from ferrocene appear to work better in comparison to Ni thin films in terms of CNT density and charge storage capability. We report here the power density and specific capacitance values of the double layer capacitors developed from the CNTs grown directly on copper substrates.

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