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Wagner, Norbert und Schiller, Günter und Willich, Caroling und Friedrich, A.K. (2010) Theory and Application of Electrochemical Impedance Spectroscopy for Fuel Cell Characterization. 8th International Symposium on Electrochemical Impedance Spectroscopy, 2010-06-06 - 2010-06-11, Carvoeiro, Porugal.
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Kurzfassung
Separation of different electrochemical and ohmic contributions to the current/voltage U(i) characteristics requires additional experimental techniques like Electrochemical Impedance Spectroscopy (EIS). The application of EIS is an approach to determine parameters which have proved to be indispensable for the characterization and development of fuel cell electrodes and electrolyte electrode assemblies. By varying the operating conditions of the fuel cell and by simulation of the measured EIS with an appropriate equivalent circuit, it is possible to split the cell impedance into electrode impedances and electrolyte resistance. Integration in the current density domain of the individual impedance elements enables the calculation of the individual overpotentials in the fuel cell and the determination of the voltage loss fraction. In the presentation examples of EIS applied to different fuel cell systems and operating conditions will be shown:
| elib-URL des Eintrags: | https://elib.dlr.de/66099/ | ||||||||||||||||||||
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| Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||
| Titel: | Theory and Application of Electrochemical Impedance Spectroscopy for Fuel Cell Characterization | ||||||||||||||||||||
| Autoren: |
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| Datum: | 6 Juni 2010 | ||||||||||||||||||||
| Open Access: | Nein | ||||||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||||||
| Stichwörter: | Impedanzsektroskopie, Brennstoffzellen | ||||||||||||||||||||
| Veranstaltungstitel: | 8th International Symposium on Electrochemical Impedance Spectroscopy | ||||||||||||||||||||
| Veranstaltungsort: | Carvoeiro, Porugal | ||||||||||||||||||||
| Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||
| Veranstaltungsbeginn: | 6 Juni 2010 | ||||||||||||||||||||
| Veranstaltungsende: | 11 Juni 2010 | ||||||||||||||||||||
| HGF - Forschungsbereich: | Energie | ||||||||||||||||||||
| HGF - Programm: | Rationelle Energieumwandlung (alt) | ||||||||||||||||||||
| HGF - Programmthema: | E EV - Energieverfahrenstechnik (alt) | ||||||||||||||||||||
| DLR - Schwerpunkt: | Energie | ||||||||||||||||||||
| DLR - Forschungsgebiet: | E EV - Energieverfahrenstechnik | ||||||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | E - Elektrochemische Prozesse (alt) | ||||||||||||||||||||
| Standort: | Stuttgart | ||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Technische Thermodynamik > Elektrochemische Energietechnik | ||||||||||||||||||||
| Hinterlegt von: | Wagner, Dr.rer.nat. Norbert | ||||||||||||||||||||
| Hinterlegt am: | 30 Nov 2010 16:13 | ||||||||||||||||||||
| Letzte Änderung: | 24 Apr 2024 19:31 |
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