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Open AccessArticle

New Three-Dimensional Porous Electrode Concept: Vertically-Aligned Carbon Nanotubes Directly Grown on Embroidered Copper Structures

1
Research Institute of Textile Chemistry and Textile Physics, University of Innsbruck, Hoechsterstrasse 73, 6850 Dornbirn, Austria
2
FEMAN Group, Departament de Física Aplicada, Universitat de Barcelona, c/Martí i Franquès 1, 08028 Barcelona, Catalonia, Spain
3
Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, c/Martí i Franquès 1, 08028 Barcelona, Catalonia, Spain
*
Author to whom correspondence should be addressed.
Nanomaterials 2017, 7(12), 438; https://doi.org/10.3390/nano7120438
Received: 9 November 2017 / Revised: 30 November 2017 / Accepted: 5 December 2017 / Published: 11 December 2017
(This article belongs to the Special Issue Carbon nanostructure for energy storage and conversion)
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 concepts. View Full-Text
Keywords: 3D porous electrodes; carbon nanotubes; embroidered current collectors; anode; plasma 3D porous electrodes; carbon nanotubes; embroidered current collectors; anode; plasma
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MDPI and ACS Style

Aguiló-Aguayo, N.; Amade, R.; Hussain, S.; Bertran, E.; Bechtold, T. New Three-Dimensional Porous Electrode Concept: Vertically-Aligned Carbon Nanotubes Directly Grown on Embroidered Copper Structures. Nanomaterials 2017, 7, 438.

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