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Title: New three-dimensional porous electrode concept: vertically-aligned carbon nanotubes directly grown on embroidered copper structures
Author: Aguiló Aguayo, Noemí
Amade Rovira, Roger
Hussain, Shahzad
Bertrán Serra, Enric
Bechtold, Thomas
Keywords: Nanotubs
Plasma (Gasos ionitzats)
Plasma (Ionized gases)
Issue Date: 11-Dec-2017
Publisher: MDPI
Abstract: New three-dimensional (3D) porous electrode concepts are required to overcome limitations in Li-ion batteries in terms of morphology (e.g., shapes, dimensions), mechanical stability (e.g., flexibility, high electroactive mass loadings), and electrochemical performance (e.g., low volumetric energy densities and rate capabilities). Here a new electrode concept is introduced based on the direct growth of vertically-aligned carbon nanotubes (VA-CNTs) on embroidered Cu current collectors. The direct growth of VA-CNTs was achieved by plasma-enhanced chemical vapor deposition (PECVD), and there was no application of any post-treatment or cleaning procedure. The electrochemical behavior of the as-grown VA-CNTs was analyzed by charge/discharge cycles at different specific currents and with electrochemical impedance spectroscopy (EIS) measurements. The results were compared with values found in the literature. The as-grown VA-CNTs exhibit higher specific capacities than graphite and pristine VA-CNTs found in the literature. This together with the possibilities that the Cu embroidered structures offer in terms of specific surface area, total surface area, and designs provide a breakthrough in new 3D electrode concept
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It is part of: Nanomaterials, 2017, vol. 7, num. 12, p. 438
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ISSN: 2079-4991
Appears in Collections:Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB))
Articles publicats en revistes (Física Aplicada)

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