Structural, morphological and electrical properties of graphene oxides obtained by Hummers, Tour and modified methods: a comparative study
| Autor: | B. I. Rachiy, O.R. Bilogubka, A.A. Malakhov, M.A. Hodlevska, Andrii I. Kachmar, I.M. Budzuliak, V. M. Boychuk, Ruslan Zapukhlyak, V.O. Kotsyubynsky |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
xrd Graphene Annealing (metallurgy) Physics QC1-999 Intercalation (chemistry) Atmospheric temperature range Condensed Matter Physics reduced graphene oxide law.invention Dielectric spectroscopy symbols.namesake raman spectroscopy Chemical engineering law Electrical resistivity and conductivity symbols graphene oxide General Materials Science structure Graphite Physical and Theoretical Chemistry Raman spectroscopy |
| Zdroj: | Фізика і хімія твердого тіла, Vol 22, Iss 1, Pp 31-38 (2021) |
| ISSN: | 2309-8589 1729-4428 |
| Popis: | The aim of this paper is the comparison of structural, morphological and electrical properties of thermally extended graphite synthesized by chemical oxidation of graphite with sulfur of nitric acids at all other same conditions. Thermal treatments of graphite intercalation compounds were performed at a temperature of 600°C on the air for 10 min but additional annealing in temperature range of 100-600oC for 1 hour was done. The obtained materials were characterized by XRD, Raman spectroscopy and impedance spectroscopy. The evolution of structural ordering of thermally extended graphite samples at increasing of annealing temperature was traced. It was determined that the additional annealing allows to control the electrical conductivity and structural disordering degree of extended graphite samples that is useful for preparation of efficient current collectors for electrochemical capacitors. |
| Databáze: | OpenAIRE |
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