Improving the wettability of aluminum on carbon nanotubes
- Authors
- So, KP[So, Kang Pyo]; Lee, IH[Lee, Il Ha]; Duong, DL[Duong, Dinh Loc]; Kim, TH[Kim, Tae Hyung]; Lim, SC[Lim, Seong Chu]; An, KH[An, Kay Hyeok]; Lee, YH[Lee, Young Hee]
- Issue Date
- May-2011
- Keywords
- Aluminum; Carbon nanotubes; Electroplating; Interface; Nanocomposite
- Citation
- ACTA MATERIALIA, v.59, no.9, pp.3313 - 3320
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACTA MATERIALIA
- Volume
- 59
- Number
- 9
- Start Page
- 3313
- End Page
- 3320
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/70088
- DOI
- 10.1016/j.actamat.2011.01.061
- ISSN
- 1359-6454
- Abstract
- The wetting of a metal on carbon nanotubes is fundamentally difficult due to the unusually large difference between their surface tensions and is a bottleneck for making metal carbon nanotube (CNT) composites. Here, we report a simple method to enhance the wettability of metal particles on the CNT surface by applying aluminum, which is the material with the largest surface tension. This method involves two steps: (i) Al nanoparticles are decorated on multiwalled carbon nanotubes by electroplating and (ii) Al powder is further spread on Al-electroplated CNTs, followed by high-temperature annealing to accommodate complete wetting of the aluminum. The large surface tension difference is overcome by forming strong Al C covalent bonds initiated by defects of the CNTs. The decrease in the D-band intensity, the G-band shift in the Raman spectroscopy and the formation of Al C covalent bonds, as confirmed by X-ray photoelectron spectroscopy, were in agreement with our structural model of CNT-vacancy-O-Al determined by density functional calculations. Crown Copyright (C) 2011 Published by Elsevier Ltd. on behalf of Acta Materialia Inc. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - Graduate School > Energy Science > 1. Journal Articles
- Science > Department of Physics > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.