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A validated multi‐scale model of a SOFC stack at elevated pressure

descriptionPublicationkeyboard_double_arrow_right Article , Journal , Other literature type 30 Aug 2013 Germany Publisher:WileyJournal:Fuel Cells, volume 13, pages 773-780 (issn: 1615-6846, eissn: 1615-6854,

Authors: Florian Leucht; Caroline Willich; Moritz Henke; Wolfgang G. Bessler; Josef Kallo; Kaspar Andreas Friedrich; Kaspar Andreas Friedrich; +1 Authors

doi: 10.1002/fuce.201300076

A validated multi‐scale model of a SOFC stack at elevated pressure

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Abstract

AbstractThis paper presents a multi‐scale model of a solid oxide fuel cell (SOFC) stack consisting of five anode‐supported cells. A two‐dimensional isothermal elementary kinetic model is used to calculate the performance of single cells. Several of these models are thermally coupled to form the stack model. Simulations can be carried out at steady‐state as well as dynamic operation. The model is validated over a wide range of operating conditions including variation of temperature, gas composition (both on anode and cathode side), and pressure. Validation is carried out using polarization curves and impedance spectra. The model is then used to explain the pressure‐induced performance increase measured at constant fuel utilization of 40%. Results show that activation and concentration overpotentials are reduced with increasing pressure.

Country

Germany

Related Organizations

Offenburg University
Germany
Università degli studi di Salerno
Italy
Offenburg University of Applied Sciences
Germany
Offenburg University of Applied Sciences
Germany
German Aerospace Center
Germany

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Keywords

EIS, Modeling, Electrochemical Impedance Spectroscopy, Experimental Results, Hochtemperaturbrennstoffzelle, SOFC, Pressurized SOFC, Solid Oxide Fuel Cell

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	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%