Experimental Investigation of Electrochemical Reactions along SOFCs for Internal and External Reformed Methane

M. Höber, B. Königshofer, G. Pongratz, P. Boškoski, G. Nusev, C. Hochenauer, V. Subotic

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandBegutachtung

Abstract

Modern societies require a reliable and sustainable energy supply, which can be achieved by solid oxide fuel cells (SOFCs). SOFCs run with a variety of fuels such as methane containing reformates. It is possible to utilize methane directly in SOFCs, but it can cause degradation of the fuel cells anode. However, irreversible degradation can be prevented, when identifying degradation mechanisms at an early stage by online monitoring tools. We used electrochemical impedance spectroscopy and its advanced tool distribution of relaxation times (DRT) method. The operating conditions were varied in order to determine the relevant system behavior as a response to the corresponding methane utilization processes. The tested electrolyte supported cells have an active area of 81cm2 and are tested under different reforming conditions. The holistic approach of this work combines thermal, electrical, electrochemical measurement methods and gas analysis to show the influence of methane utilization on the DRT spectra.

Originalspracheenglisch
Titel17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
Herausgeber (Verlag)IOP Publishing Ltd.
Seiten2017-2031
Seitenumfang15
Auflage1
ISBN (elektronisch)9781607685395
DOIs
PublikationsstatusVeröffentlicht - 2021
Veranstaltung17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021 - Stockholm, Schweden
Dauer: 18 Juli 202123 Juli 2021

Publikationsreihe

NameECS Transactions
Nummer1
Band103
ISSN (Print)1938-6737
ISSN (elektronisch)1938-5862

Konferenz

Konferenz17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
Land/GebietSchweden
OrtStockholm
Zeitraum18/07/2123/07/21

ASJC Scopus subject areas

  • Ingenieurwesen (insg.)

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