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  Theoretical Investigations of Steady State Multiplicities in Solid Oxide Fuel Cells

Mangold, M., Krasnyk, M., & Sundmacher, K. (2006). Theoretical Investigations of Steady State Multiplicities in Solid Oxide Fuel Cells. Journal of Applied Electrochemistry, 36(3), 265-275. doi:10.1007/s10800-005-9080-0.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-9A8A-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-FCBD-E
Genre: Journal Article

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 Creators:
Mangold, M.1, Author              
Krasnyk, M.1, Author              
Sundmacher, Kai2, 3, Author              
Affiliations:
1Process Synthesis and Process Dynamics, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society, ou_1738153              
2Process Systems Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society, ou_1738151              
3Otto-von-Guericke-Universität Magdeburg, External Organizations, ou_1738156              

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Free keywords: bifurcation analysis; fuel cells; modelling; nonlinear dynamics; SOFC
 Abstract: The nonlinear steady state behaviour of solid oxide fuel cells (SOFCs) is investigated. It is found that the temperature dependence of the electrolyte's conductivity has a very strong influence on the occurrence of multiple steady states, instabilities and the formation of hot spots. Two correlations from literature for the electrolyte's conductivity are studied in a lumped model and in a 1D spatially distributed model of a SOFC. The cases of galvanostatic operation, potentiostatic operation, and operation under a constant ohmic load are considered. The lumped model possesses a unique steady state under galvanostatic operation and up to three steady states under potentiostatic operation or under constant load. In the distributed model, three steady states may coexist under galvanostatic operation and up to five under potentiostatic operation. © Springer 2005. [accessed 2014 January 9th]

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Language(s): eng - English
 Dates: 2006
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 238096
Other: 4/06
DOI: 10.1007/s10800-005-9080-0
 Degree: -

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Title: Journal of Applied Electrochemistry
Source Genre: Journal
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Publ. Info: London : Chapman and Hall.
Pages: - Volume / Issue: 36 (3) Sequence Number: - Start / End Page: 265 - 275 Identifier: ISSN: 0021-891X
CoNE: /journals/resource/954925410814