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| Azam, Siraj |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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Hannula, Pyry-Mikko
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Topics
Publications (9/9 displayed)
- 2024Graphite recovery from waste Li-ion battery black mass for direct re-usecitations
- 2022Electrochemical Growth of Ag/Zn Alloys from Zinc Process Solutions and Their Dealloying Behaviorcitations
- 2021Copper recovery from industrial wastewater - Synergistic electrodeposition onto nanocarbon materialscitations
- 2020A sustainable two-layer lignin-anodized composite coating for the corrosion protection of high-strength low-alloy steelcitations
- 2020Transformation of industrial wastewater into copper–nickel nanowire composites : straightforward recycling of heavy metals to obtain products of high added valuecitations
- 2019Processing and properties of carbon nanotube-copper composites ; Hiilinanoputki-kuparikomposiittien valmistus ja ominaisuudetcitations
- 2018Corrosion behaviour of cast and deformed copper-carbon nanotube composite wires in chloride mediacitations
- 2018Carbon Nanotube Fiber Pretreatments for Electrodeposition of Coppercitations
- 2016Carbon nanotube-copper composites by electrodeposition on carbon nanotube fiberscitations
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article
Carbon nanotube-copper composites by electrodeposition on carbon nanotube fibers
Abstract
<p>Electrochemical deposition of copper on a carbon nanotube (CNT) fiber from a copper sulfate - sulfuric acid bath was studied in order to produce a carbon nanotube-copper composite wire. The high resistivity of the aerogel-spun fiber causes a non-uniform current distribution during deposition, which results in a drastic drop in the copper nuclei population density as sufficient overpotential is not available beyond a certain distance from the current feed point. Copper was found to fill the pores between CNT bundles from Focused Ion Beam (FIB) cut cross-sections confirming that aqueous based electrolytes can fill micropores between as-spun CNTs in a fiber network. The speed at which copper grows on the fiber surface was identified at ca. 0.08 mm/s with 1 mA applied current. The copper cladding showed columnar growth with a grain size an order of magnitude higher than the CNT-Cu region. The resulting composite was found to have specific conductivity similar to that of pure copper i.e. 98% of copper with 0.2 w-% of CNT, exhibiting a ninefold increase from the pure CNT fiber. Self-annealing was shown to decrease the resistance of the composite.</p>