Improvement of the Performance of Graphite Felt Electrodes for Vanadium-Redox-Flow-Batteries by Plasma Treatment
In the frame of the present contribution oxidizing plasma pretreatment is used for the improvement of the electrocatalytic activity of graphite felt electrodes for Vanadium-Redox-Flow-Batteries (VRB). The influence of the working gas media on the catalytic activity and the surface morphology is demo...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Diponegoro University
2014-02-01
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| Series: | International Journal of Renewable Energy Development |
| Subjects: | |
| Online Access: | https://ijred.cbiore.id/index.php/ijred/article/view/6184 |
| _version_ | 1797425049571950592 |
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| author | Eva-Maria Hammer Benedikt Berger Lidiya Komsiyska |
| author_facet | Eva-Maria Hammer Benedikt Berger Lidiya Komsiyska |
| author_sort | Eva-Maria Hammer |
| collection | DOAJ |
| description | In the frame of the present contribution oxidizing plasma pretreatment is used for the improvement of the electrocatalytic activity of graphite felt electrodes for Vanadium-Redox-Flow-Batteries (VRB). The influence of the working gas media on the catalytic activity and the surface morphology is demonstrated. The electrocatalytical properties of the graphite felt electrodes were examined by cyclic voltammetry and electrochemical impedance spectroscopy. The obtained results show that a significant improvement of the redox reaction kinetics can be achieved for all plasma modified samples using different working gasses (Ar, N2 and compressed air) in an oxidizing environment. Nitrogen plasma treatment leads to the highest catalytical activities at the same operational conditions. Through a variation of the nitrogen plasma treatment duration a maximum performance at about 14 min cm-2was observed, which is also represented by a minimum of 90 Ω in the charge transfer resistance obtained by EIS measurements. The morphology changes of the graphitized surface were followed using SEM. |
| first_indexed | 2024-03-09T08:10:25Z |
| format | Article |
| id | doaj.art-4cb5cb76d70b49668898caf099dbc4c0 |
| institution | Directory Open Access Journal |
| issn | 2252-4940 |
| language | English |
| last_indexed | 2024-03-09T08:10:25Z |
| publishDate | 2014-02-01 |
| publisher | Diponegoro University |
| record_format | Article |
| series | International Journal of Renewable Energy Development |
| spelling | doaj.art-4cb5cb76d70b49668898caf099dbc4c02023-12-02T23:27:27ZengDiponegoro UniversityInternational Journal of Renewable Energy Development2252-49402014-02-013171210.14710/ijred.3.1.7-125421Improvement of the Performance of Graphite Felt Electrodes for Vanadium-Redox-Flow-Batteries by Plasma TreatmentEva-Maria Hammer0Benedikt Berger1Lidiya Komsiyska2NEXT ENERGY • EWE Research Centre for Energy Technology at Carl von Ossietzky University, Carl-von-Ossietzky-Str. 15, 26129 Oldenburg, GermanyNEXT ENERGY • EWE Research Centre for Energy Technology at Carl von Ossietzky University, Carl-von-Ossietzky-Str. 15, 26129 Oldenburg, GermanyNEXT ENERGY • EWE Research Centre for Energy Technology at Carl von Ossietzky University, Carl-von-Ossietzky-Str. 15, 26129 Oldenburg, GermanyIn the frame of the present contribution oxidizing plasma pretreatment is used for the improvement of the electrocatalytic activity of graphite felt electrodes for Vanadium-Redox-Flow-Batteries (VRB). The influence of the working gas media on the catalytic activity and the surface morphology is demonstrated. The electrocatalytical properties of the graphite felt electrodes were examined by cyclic voltammetry and electrochemical impedance spectroscopy. The obtained results show that a significant improvement of the redox reaction kinetics can be achieved for all plasma modified samples using different working gasses (Ar, N2 and compressed air) in an oxidizing environment. Nitrogen plasma treatment leads to the highest catalytical activities at the same operational conditions. Through a variation of the nitrogen plasma treatment duration a maximum performance at about 14 min cm-2was observed, which is also represented by a minimum of 90 Ω in the charge transfer resistance obtained by EIS measurements. The morphology changes of the graphitized surface were followed using SEM.https://ijred.cbiore.id/index.php/ijred/article/view/6184air plasma, carbon felt electrode, graphite surface modification, vanadium-redox-flow battery |
| spellingShingle | Eva-Maria Hammer Benedikt Berger Lidiya Komsiyska Improvement of the Performance of Graphite Felt Electrodes for Vanadium-Redox-Flow-Batteries by Plasma Treatment International Journal of Renewable Energy Development air plasma, carbon felt electrode, graphite surface modification, vanadium-redox-flow battery |
| title | Improvement of the Performance of Graphite Felt Electrodes for Vanadium-Redox-Flow-Batteries by Plasma Treatment |
| title_full | Improvement of the Performance of Graphite Felt Electrodes for Vanadium-Redox-Flow-Batteries by Plasma Treatment |
| title_fullStr | Improvement of the Performance of Graphite Felt Electrodes for Vanadium-Redox-Flow-Batteries by Plasma Treatment |
| title_full_unstemmed | Improvement of the Performance of Graphite Felt Electrodes for Vanadium-Redox-Flow-Batteries by Plasma Treatment |
| title_short | Improvement of the Performance of Graphite Felt Electrodes for Vanadium-Redox-Flow-Batteries by Plasma Treatment |
| title_sort | improvement of the performance of graphite felt electrodes for vanadium redox flow batteries by plasma treatment |
| topic | air plasma, carbon felt electrode, graphite surface modification, vanadium-redox-flow battery |
| url | https://ijred.cbiore.id/index.php/ijred/article/view/6184 |
| work_keys_str_mv | AT evamariahammer improvementoftheperformanceofgraphitefeltelectrodesforvanadiumredoxflowbatteriesbyplasmatreatment AT benediktberger improvementoftheperformanceofgraphitefeltelectrodesforvanadiumredoxflowbatteriesbyplasmatreatment AT lidiyakomsiyska improvementoftheperformanceofgraphitefeltelectrodesforvanadiumredoxflowbatteriesbyplasmatreatment |