Yurkiv, Vitaliy und Starukhin, Dzmitry und Volpp, Hans-Robert und Bessler, Wolfgang (2011) Elementary Reaction Kinetics of the CO/CO2/Ni/YSZ Electrode. Journal of The Electrochemical Society, 158 (1), B5-B10. Electrochemical Society, Inc.. doi: 10.1149/1.3505296.
![]() |
PDF
- Nur DLR-intern zugänglich
420kB |
Offizielle URL: http://dx.doi.org/10.1149/1.3505296
Kurzfassung
Results of combined experimental and theoretical investigations of elementary chemical reaction processes of CO�CO2 gas mixtures at nickel/yttria-stabilized zirconia (Ni/YSZ) solid oxide fuel cell (SOFC) model anode systems are presented. Temperature-programmed desorption and reaction measurements were performed in order to determine adsorption/desorption kinetic data as well as thermodynamic parameters for the CO/CO2/Ni and CO/CO2/yttria-stabilized zirconia (YSZ) heterogeneous reaction systems. From these data, an elementary kinetic reaction mechanism of the electrochemical CO oxidation at Ni/YSZ anodes was developed. Numerical simulations were performed for three different spillover mechanisms. Steady-state polarization curves and electrochemical impedance spectra were calculated, allowing for a direct comparison with experiments performed by Lauvstad et al. [J. Electrochem. Soc., 149, E506 (2002)]. Best agreement with the experimental data was obtained when assuming two consecutive charge-transfer steps from YSZ�O2� via YSZ�O� to Ni�O, the second step being accompanied by oxygen spillover over the three-phase boundary.
elib-URL des Eintrags: | https://elib.dlr.de/71557/ | ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||
Titel: | Elementary Reaction Kinetics of the CO/CO2/Ni/YSZ Electrode | ||||||||||||||||||||
Autoren: |
| ||||||||||||||||||||
Datum: | Januar 2011 | ||||||||||||||||||||
Erschienen in: | Journal of The Electrochemical Society | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||
Band: | 158 | ||||||||||||||||||||
DOI: | 10.1149/1.3505296 | ||||||||||||||||||||
Seitenbereich: | B5-B10 | ||||||||||||||||||||
Verlag: | Electrochemical Society, Inc. | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | adsorption, carbon compounds, chemical reactions, electrochemical electrodes, electrochemical impedance spectroscopy, gas mixtures, nickel, numerical analysis, oxidation, polarisation, solid oxide fuel cells, thermally stimulated desorption, thermodynamic properties, yttrium compounds, zirconium compounds | ||||||||||||||||||||
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: | Yurkiv, Vitaliy | ||||||||||||||||||||
Hinterlegt am: | 08 Nov 2011 11:25 | ||||||||||||||||||||
Letzte Änderung: | 08 Mär 2018 18:45 |
Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags