Titel
Development and Up-Scaling of Electrochemical Production and Mild Thermal Reduction of Graphene Oxide
Autor*in
Markus Ostermann
Centre for Electrochemical Surface Technology, CEST GmbH
Autor*in
Peter Velicsanyi
Centre for Electrochemical Surface Technology, CEST GmbH
Autor*in
Pierluigi Bilotto
Centre for Electrochemical Surface Technology, CEST GmbH
... show all
Abstract
To reduce the global emissions of CO2, the aviation industry largely relies on new light weight materials, which require multifunctional coatings. Graphene and its derivatives are particularly promising for combining light weight applications with functional coatings. Although they have proven to have outstanding properties, graphene and its precursor graphene oxide (GO) remain far from application at the industrial scale since a comprehensive protocol for mass production is still lacking. In this work, we develop and systematically describe a sustainable up-scaling process for the production of GO based on a three-step electrochemical exfoliation method. Surface characterization techniques (XRD, XPS and Raman) allow the understanding of the fast exfoliation rates obtained, and of high conductivities that are up to four orders of magnitude higher compared to GO produced via the commonly used modified Hummers method. Furthermore, we show that a newly developed mild thermal reduction at 250 °C is sufficient to increase conductivity by another order of magnitude, while limiting energy requirements. The proposed GO powder protocol suggests an up-scaling linear relation between the amount of educt surface and volume of electrolyte. This may support the mass production of GO-based coatings for the aviation industry, and address challenges such as low weight, fire, de-icing and lightning strike protection.
Stichwort
graphene oxidereduced graphene oxideup-scalingthermal reductionaeronautical applicationpolymer filler
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
Materials
Band
15
Ausgabe
13
ISSN
1996-1944
Erscheinungsdatum
2022
Publication
MDPI AG
Projekt
Kod / Identifikator
886376
Erscheinungsdatum
2022
Zugänglichkeit
Rechteangabe
© 2022 by the authors

Herunterladen

Universität Wien | Universitätsring 1 | 1010 Wien | T +43-1-4277-0