NDLI: Mathematical modeling and steady-state analysis of a co-ionic-conducting solid oxide fuel cell

Content Provider	IEEE Xplore Digital Library
Author	Bavarian, M. Soroush, M. Kevrekidis, I.G. Benziger, J.B.
Copyright Year	2012
Description	Author affiliation: Dept. of Chem. & Biol. Eng., Princeton Univ., Princeton, NJ, USA (Kevrekidis, I.G.; Benziger, J.B.) \|\| Dept. of Chem. & Biol. Eng., Drexel Univ., Philadelphia, PA, USA (Bavarian, M.; Soroush, M.)
Abstract	A mathematical model of a solid oxide fuel cell (SOFC) with a $BaCe_{1-x}Sm_{x}O_{3-α}$ type electrolyte is developed. This class of electrolytes exhibits both proton and oxygen-anion conductivity. To develop the model, heat transfer, mass transfer and electrochemical processes are taken into account. The existence of steady-state multiplicity in this class of fuel cells is investigated under three operation modes: constant ohmic load, potentiostatic and galvanostatic. The cell has up to three steady states under the constant ohmic load and potentiostatic modes, and a unique steady state under the galvanostatic mode. This same steady state behavior has been observed in oxygen-anion conducting and proton conducting SOFCs. Interestingly, this study shows that in this class of SOFCs, thermal and concentration multiplicities can coexist; ignition in the solid temperature is accompanied by extinction in the fuel and oxygen concentrations, and ignition and extinction in concentrations of water in the anode and cathode sides, respectively.
Sponsorship	IEEE Control Syst. Soc.
Starting Page	4269
Ending Page	4274
File Size	506854
Page Count	6
File Format	PDF
ISBN	9781457710957
ISSN	07431619
e-ISBN	9781457710964
e-ISBN	9781467321020
DOI	10.1109/ACC.2012.6314973
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-27
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Mathematical model Cathodes Anodes Protons Steady-state Conductivity Equations
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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