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Constrained and non-constrained sintering of plasma-sprayed zirconia based electrolytes for SOFCs

Christenn, Claudia und Ansar, Asif (2010) Constrained and non-constrained sintering of plasma-sprayed zirconia based electrolytes for SOFCs. 12th International Ceramics Congress, 2010-06-06 - 2010-06-11, Montecatini Terme, Pistoia, Italy.

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Kurzfassung

The current development in SOFCs is focused on reducing the operating temperature below 800°C. The reduced operating temperature promotes durability of cells and decreases stringent demands on peripheral components. However, with lower temperature the ionic conductivity of electrolytes decreases. Thickness reduction of the conventionally used yttria-stabilized zirconia electrolyte by using nanostructured particles as feedstock is a possibility to avoid this problem. Another possibility is the use of an electrolyte with improved ionic conductivity for intermediate temperature SOFCs, e.g. scandia-stabilized zirconia. Within this work zirconia based electrolyte layers were deposited on metal substrates using plasma spraying. As all thermal sprayed coatings contain some porosity, which influences the cell performance, the sprayed electrolyte layers were sintered in a second step. Plasma-sprayed coatings were under compressive stresses. In order to achieve a better understanding of differences in the sintering behaviour, plasma sprayed layers were sintered under constrained and non-constrained conditions in the temperature range of 800 to 1520 °C and characterised. Sintering properties, microstructure, and conductivity of sprayed and sintered electrolyte layers were investigated.

elib-URL des Eintrags:https://elib.dlr.de/65838/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Constrained and non-constrained sintering of plasma-sprayed zirconia based electrolytes for SOFCs
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Christenn, ClaudiaDLR TTNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Ansar, AsifDLR TTNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:Juni 2010
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:YSZ, Electrolyte, SOFC, Sintering, Plasma spraying
Veranstaltungstitel:12th International Ceramics Congress
Veranstaltungsort:Montecatini Terme, Pistoia, Italy
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:6 Juni 2010
Veranstaltungsende:11 Juni 2010
Veranstalter :CIMTEC
HGF - Forschungsbereich:Energie
HGF - Programm:Rationelle Energieumwandlung (alt)
HGF - Programmthema:E BZ - Brennstoffzellen (alt)
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E BZ - Brennstoffzellen
DLR - Teilgebiet (Projekt, Vorhaben):E - Hochtemperatur-Brennstoffzellen (alt)
Standort: Stuttgart
Institute & Einrichtungen:Institut für Technische Thermodynamik > Elektrochemische Energietechnik
Hinterlegt von: Christenn, Claudia
Hinterlegt am:23 Nov 2010 13:05
Letzte Änderung:24 Apr 2024 19:31

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