Fabrication and Characterization of Strong and High Electrically Conductive Carbon Nanostructured Papers

López Ávila, Iván (2016). Fabrication and Characterization of Strong and High Electrically Conductive Carbon Nanostructured Papers. Thesis (Master thesis), E.T.S.I. Industriales (UPM).

Description

Title: Fabrication and Characterization of Strong and High Electrically Conductive Carbon Nanostructured Papers
Author/s:
  • López Ávila, Iván
Contributor/s:
  • Riesgo Alcaide, Teresa
Item Type: Thesis (Master thesis)
Date: 2016
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Carbon nanostructures (CNS) such as carbon nanotubes (CNTs) or graphene have been widely studied due to their mechanical, thermal and electrical properties, which make them very promising for a wide range of applications. However, CNS-based macrostructures, such as thin CNS films, papers, and bulk structures that maintain the observed properties of CNS at the nanoscale, have still not been successfully accomplished. Furthermore, CNS-based macrostructures with attractive electrical and mechanical properties for industrial applications are not cost-efficient enough, so far, to be scalable. In this work, paper-like CNS-based macrostructures (CNS papers) are presented as a potentially scalable alternative. The CNS used to develop CNS papers were provided by Applied NanoStructured Solutions, LLC, which is part of Lockheed Martin Corporation. These CNS are highly aligned, cross-linked, grouped together in flakes and free of a growth substrate multiwall CNTs. CNS papers are obtained through vacuum filtration of a solution made out of dispersed CNS. Similar structures made out of individual CNTs (CNTs buckypaper or sheets) have been reported in the literature. However, the high cost of individual CNTs, as well as the challenges in the dispersion of CNTs during the fabrication process need to be overcome in order to reach scalable solutions. CNS used in this work are more affordable than other commercially available CNS and they have shown advantages in the dispersion process. In this work, studies of the dispersion of CNS in aqueous solutions are presented. Thus, the effect of surfactant concentration and sonication time on mechanical properties and electrical conductivity is analyzed through statistical and experimental methods. Additionally, mechanical densification is also studied as a post-filtration inexpensive method to enhance mechanical and electrical properties of CNS

More information

Item ID: 44254
DC Identifier: http://oa.upm.es/44254/
OAI Identifier: oai:oa.upm.es:44254
Deposited by: Biblioteca ETSI Industriales
Deposited on: 23 Dec 2016 08:26
Last Modified: 23 Dec 2016 08:44
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