Electrochemical impedance spectroscopy correlation among graphene oxide/carbon fibers (GO/CF) composites and GO structural parameters produced at different oxidation degrees
Graphene oxide (GO) with different oxidation degrees was systematically studied. This approach took into account GO synthesis with five oxidation degrees using 2.0, 2.5, 3.0, 4.0, and 5.0 g of oxidizing agent for each 1.0 g of graphite. The oxidation degree control provided surface functional group...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-09-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785420315829 |
| _version_ | 1818553389771915264 |
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| author | André F. Sardinha Dalva A.L. Almeida Neidenei G. Ferreira |
| author_facet | André F. Sardinha Dalva A.L. Almeida Neidenei G. Ferreira |
| author_sort | André F. Sardinha |
| collection | DOAJ |
| description | Graphene oxide (GO) with different oxidation degrees was systematically studied. This approach took into account GO synthesis with five oxidation degrees using 2.0, 2.5, 3.0, 4.0, and 5.0 g of oxidizing agent for each 1.0 g of graphite. The oxidation degree control provided surface functional group changes indicating the proper interaction between the carbon fiber (CF) surface and GO deposit. GO samples were structurally and physically evaluated by Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction measurements. Mildly chemically oxidized CF was used to produce five different composites GO/CF analyzed by electrochemical impedance spectroscopy measurements (EIS). GO structural results showed well-corroborated data for the GO4.0 samples. EIS responses also aggregated important information associated with the composite charge transfer resistances as well as to their capacitive behaviors. |
| first_indexed | 2024-12-12T09:25:12Z |
| format | Article |
| id | doaj.art-cdc24f0466c442ceb5715aac92e9d50a |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-12T09:25:12Z |
| publishDate | 2020-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-cdc24f0466c442ceb5715aac92e9d50a2022-12-22T00:29:04ZengElsevierJournal of Materials Research and Technology2238-78542020-09-01951084110853Electrochemical impedance spectroscopy correlation among graphene oxide/carbon fibers (GO/CF) composites and GO structural parameters produced at different oxidation degreesAndré F. Sardinha0Dalva A.L. Almeida1Neidenei G. Ferreira2Corresponding author.; Instituto Nacional de Pesquisas Espaciais—INPE, Av. dos Astronautas, 1758, Jd. Granja, 12227-010 São José dos Campos, SP, BrazilInstituto Nacional de Pesquisas Espaciais—INPE, Av. dos Astronautas, 1758, Jd. Granja, 12227-010 São José dos Campos, SP, BrazilInstituto Nacional de Pesquisas Espaciais—INPE, Av. dos Astronautas, 1758, Jd. Granja, 12227-010 São José dos Campos, SP, BrazilGraphene oxide (GO) with different oxidation degrees was systematically studied. This approach took into account GO synthesis with five oxidation degrees using 2.0, 2.5, 3.0, 4.0, and 5.0 g of oxidizing agent for each 1.0 g of graphite. The oxidation degree control provided surface functional group changes indicating the proper interaction between the carbon fiber (CF) surface and GO deposit. GO samples were structurally and physically evaluated by Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction measurements. Mildly chemically oxidized CF was used to produce five different composites GO/CF analyzed by electrochemical impedance spectroscopy measurements (EIS). GO structural results showed well-corroborated data for the GO4.0 samples. EIS responses also aggregated important information associated with the composite charge transfer resistances as well as to their capacitive behaviors.http://www.sciencedirect.com/science/article/pii/S2238785420315829Graphene oxideCarbon fiberElectrochemical impedance spectroscopyComplex capacitance |
| spellingShingle | André F. Sardinha Dalva A.L. Almeida Neidenei G. Ferreira Electrochemical impedance spectroscopy correlation among graphene oxide/carbon fibers (GO/CF) composites and GO structural parameters produced at different oxidation degrees Journal of Materials Research and Technology Graphene oxide Carbon fiber Electrochemical impedance spectroscopy Complex capacitance |
| title | Electrochemical impedance spectroscopy correlation among graphene oxide/carbon fibers (GO/CF) composites and GO structural parameters produced at different oxidation degrees |
| title_full | Electrochemical impedance spectroscopy correlation among graphene oxide/carbon fibers (GO/CF) composites and GO structural parameters produced at different oxidation degrees |
| title_fullStr | Electrochemical impedance spectroscopy correlation among graphene oxide/carbon fibers (GO/CF) composites and GO structural parameters produced at different oxidation degrees |
| title_full_unstemmed | Electrochemical impedance spectroscopy correlation among graphene oxide/carbon fibers (GO/CF) composites and GO structural parameters produced at different oxidation degrees |
| title_short | Electrochemical impedance spectroscopy correlation among graphene oxide/carbon fibers (GO/CF) composites and GO structural parameters produced at different oxidation degrees |
| title_sort | electrochemical impedance spectroscopy correlation among graphene oxide carbon fibers go cf composites and go structural parameters produced at different oxidation degrees |
| topic | Graphene oxide Carbon fiber Electrochemical impedance spectroscopy Complex capacitance |
| url | http://www.sciencedirect.com/science/article/pii/S2238785420315829 |
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