Oluwaseun John Dada

Electronic and Dielectric Properties of Graphene and Graphene Oxide

Superior Electronic and Dielectric Properties of Corrugated Electrochemically Reduced Graphene over Graphene Oxide Paper

• Broschiertes Buch

Produktbeschreibung

This work establishes that the frequency and temperature-dependent electronic and dielectric properties of electrochemically reduced graphene (ERGO) are higher than graphene oxide (GO) papers by 2 orders of magnitude. There is stronger polarization as a result of increased concentration of reduced clusters and thinning of graphene sheets in ERGO papers, first ever electrochemically reduced paper from GO. In GO, there is a greater dependence on frequency due to a higher percentage of interlayer O-H bonds. Dielectric permittivity increases with decreasing frequency due to stronger polarization and reduced conduction losses. At very high frequencies, greater conduction losses are responsible for lower values of dielectric permittivity of ERGO papers compared to GO papers. The profile of temperature dependent conductivity was due to thermally activated transport, residence time and ionic scattering of charge carriers. The recovery of conducting and dielectric properties at higher temperatures were due to the transition from graphene-ion-cloud to a graphene-air dielectric multi-nano-capacitor system.

Produktdetails

• Verlag: GlobeEdit
• Seitenzahl: 84
• Erscheinungstermin: 29. Juni 2020
• Englisch
• Abmessung: 220mm x 150mm x 6mm
• Gewicht: 143g
• ISBN-13: 9786200610805
• ISBN-10: 6200610800
• Artikelnr.: 59878474

Autorenporträt

* Il Prof. Dr. Oluwaseun John Dada è Professorial Chair of Signature EcoSystems Technologies. Ha lavorato negli ultimi 8 anni sui materiali NanoScale, sulla produzione di materiali avanzati e sulle applicazioni, e per oltre 10 anni nella metallurgia e nella produzione di alluminio.