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Application of Electrochemical Impedance Spectroscopy for Fuel Cell Characterization: Polymer Electrolyte Fuel Cell (PEFC) and Oxygen Reduction Reaction in Alkaline Solution

Wagner, Norbert (2012) Application of Electrochemical Impedance Spectroscopy for Fuel Cell Characterization: Polymer Electrolyte Fuel Cell (PEFC) and Oxygen Reduction Reaction in Alkaline Solution. Bulgarian Chemical Communications, 44 (4), Seiten 371-382. Chemicals Institutes of the Bulgarian Academy of Sciences and of the Union of Chemists in Bulgaria. ISSN 0324-1130.

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Offizielle URL: http://www.bcc.bas.bg/

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. � Polymer Electrolyte Fuel Cells (PEFC) with symmetrical gas supply, with hydrogen and oxygen at different cell potentials � Solid Oxide Fuel Cells (SOFC) supplied with hydrogen with different water partial pressures and operated at different temperatures � Oxygen reduction at the cathode of an Alkaline Fuel Cell (AFC)

elib-URL des Eintrags:https://elib.dlr.de/81396/
Dokumentart:Zeitschriftenbeitrag
Titel:Application of Electrochemical Impedance Spectroscopy for Fuel Cell Characterization: Polymer Electrolyte Fuel Cell (PEFC) and Oxygen Reduction Reaction in Alkaline Solution
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Wagner, Norbertnorbert.wagner (at) dlr.dehttps://orcid.org/0000-0002-2596-8689NICHT SPEZIFIZIERT
Datum:Dezember 2012
Erschienen in:Bulgarian Chemical Communications
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Band:44
Seitenbereich:Seiten 371-382
Verlag:Chemicals Institutes of the Bulgarian Academy of Sciences and of the Union of Chemists in Bulgaria
ISSN:0324-1130
Status:veröffentlicht
Stichwörter:Impedanzspektroskopie Sauerstoffreduktion Brennstoffzellen
HGF - Forschungsbereich:Energie
HGF - Programm:Rationelle Energieumwandlung und Nutzung (alt)
HGF - Programmthema:Brennstoffzelle (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:14 Mär 2013 12:50
Letzte Änderung:20 Jun 2024 09:19

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