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dc.contributor.authorStefan, Elena
dc.contributor.authorConnor, Paul Alexander
dc.contributor.authorIrvine, John Thomas Sirr
dc.identifier.citationStefan , E , Connor , P A & Irvine , J T S 2013 , ' Development and performance of MgFeCrO 4 – based electrodes for solid oxide fuel cells ' , Journal of Materials Chemistry A , vol. 1 , no. 28 , pp. 8262-8269 .
dc.identifier.otherPURE: 56691510
dc.identifier.otherPURE UUID: 34ced40d-5930-4dd9-959b-bff09ad08116
dc.identifier.otherWOS: 000320876000023
dc.identifier.otherScopus: 84879993388
dc.identifier.otherORCID: /0000-0002-1492-7590/work/60427195
dc.identifier.otherORCID: /0000-0002-8394-3359/work/68280652
dc.description.abstractComposite anodes for solid oxide fuel cells (SOFC) developed on yttria stabilised zirconia (YSZ) porous supports by infiltration of electrode materials has been successfully applied for various anode and cathode compositions, resulting in high performance SOFC devices. The focus of this study is the performance of the chromium-rich spinel (MgFeCrO4) as an electrode support material when used alone or impregnated. The composite anodes were prepared by aqueous infiltration of nitrate salts to produce (La0.75Sr0.25)0.97Cr0.5Mn0.5O3−δ, Ce0.9Gd0.1O2−δ, CeO2 or Pd into a MgFeCrO4 scaffold with 45% porosity and studied by electrochemical impedance spectroscopy in symmetrical cell configuration. The performance was evaluated in humidified 5% H2/Ar in order to quantify their stability and performance up to 850 °C with respect to the MgFeCrO4 porous substrate. It was found that all the impregnated phases adhere very well to the spinel and considerably enhance performance and stability to a level required for SOFC applications. MgFeCrO4/LSCM/CGO and MgFeCrO4/LSCM/CGO/Pd showed the most substantial improvement in comparison to the scaffold’s performance, with ASR values of 1.74 Ω cm2 and 0.91 Ω cm2, respectively.
dc.relation.ispartofJournal of Materials Chemistry Aen
dc.rightsCopyright 2013, the authors. Publisher retains licence to publish. The version of record of the article is avialabe at DOI: 10.1039/C3TA11496A.en
dc.subjectsolid oxide fuel cells (SOFC)en
dc.subjectYttria stabilised zirconia (YSZ)en
dc.subjectChromium-rich spinelen
dc.subjectSymmetrical cell configurationen
dc.titleDevelopment and performance of MgFeCrO4 – based electrodes for solid oxide fuel cellsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Chemistryen
dc.contributor.institutionUniversity of St Andrews.St Andrews Sustainability Instituteen
dc.contributor.institutionUniversity of St Andrews.EaSTCHEMen
dc.description.statusPeer revieweden

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