Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/20442
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dc.contributor.authorNasani, Narendarpt
dc.contributor.authorRamasamy, Devarajpt
dc.contributor.authorBrandao, Ana D.pt
dc.contributor.authorYaremchenko, Aleksey A.pt
dc.contributor.authorFagg, Duncan P.pt
dc.date.accessioned2017-12-07T19:47:14Z-
dc.date.issued2014pt
dc.identifier.issn0360-3199pt
dc.identifier.urihttp://hdl.handle.net/10773/20442-
dc.description.abstractThe effect of porosity and atmosphere on the polarisation resistance of Ni-BZY cermet anodes for protonic ceramic fuel cells (PCFCs) was investigated using electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). The level of porosity was adjusted by the use of differing amounts of starch porogen. The total polarisation resistance of the cermet anode (Rp) generally showed an increase with increasing porosity. The high frequency polarisation resistance (R2) was shown to have low atmosphere dependence but presented a strong correlation to microstructural variations. In contrast, the low frequency polarisation resistance (R3) was shown to have a low dependence on humidity but demonstrated a strong negative dependence on pH(2) with a value of unity. Subsequent discussion relates the lower frequency response to the dissociative adsorption of H2 on the anode surface. The present study highlights that porogens are not required for peak performance in PCFC anodes under standard operating conditions, a result contrary to that of their oxide-ion conducting cermet counterparts. Copyright (c) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.pt
dc.language.isoengpt
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDpt
dc.relationinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/100412/PTpt
dc.relationinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F80949%2F2011/PTpt
dc.relationinfo:eu-repo/grantAgreement/FCT/COMPETE/132936/PTpt
dc.rightsrestrictedAccesspor
dc.subjectCONDUCTING ELECTROLYTEpt
dc.subjectPORE-FORMERpt
dc.subjectSOFCSpt
dc.subjectMICROSTRUCTUREpt
dc.subjectPERFORMANCEpt
dc.subjectNIpt
dc.subjectOXIDATIONpt
dc.subjectPOWDERSpt
dc.subjectPHASEpt
dc.titleThe impact of porosity, pH(2) and pH(2)O on the polarisation resistance of Ni-BaZr0.85Y0.15P3-delta cermet anodes for Protonic Ceramic Fuel Cells (PCFCs)pt
dc.typearticlept
dc.peerreviewedyespt
ua.distributioninternationalpt
degois.publication.firstPage21231pt
degois.publication.issue36pt
degois.publication.lastPage21241pt
degois.publication.titleINTERNATIONAL JOURNAL OF HYDROGEN ENERGYpt
degois.publication.volume39pt
dc.date.embargo10000-01-01-
dc.relation.publisherversion10.1016/j.ijhydene.2014.10.093pt
dc.identifier.doi10.1016/j.ijhydene.2014.10.093pt
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