Pre-coating of LSCM perovskite with metal catalyst for scalable high performance anodes

Handle URI:
http://hdl.handle.net/10754/562842
Title:
Pre-coating of LSCM perovskite with metal catalyst for scalable high performance anodes
Authors:
Boulfrad, Samir; Cassidy, Mark; Djurado, Elisabeth; Irvine, John Ts S; Jabbour, Ghassan E.
Abstract:
In this work, a highly scalable technique is proposed as an alternative to the lab-scale impregnation method. LSCM-CGO powders were pre-coated with 5 wt% of Ni from nitrates. After appropriate mixing and adequate heat treatment, coated powders were then dispersed into organic based vehicles to form a screen-printable ink which was deposited and fired to form SOFC anode layers. Electrochemical tests show a considerable enhancement of the pre-coated anode performances under 50 ml/min wet H2 flow with polarization resistance decreased from about 0.60cm2 to 0.38 cm2 at 900 C and from 6.70 cm2 to 1.37 cm2 at 700 C. This is most likely due to the pre-coating process resulting in nano-scaled Ni particles with two typical sizes; from 50 to 200 nm and from 10 to 40 nm. Converging indications suggest that the latter type of particle comes from solid state solution of Ni in LSCM phase under oxidizing conditions and exsolution as nanoparticles under reducing atmospheres. Copyright © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
KAUST Department:
KAUST Solar Center (KSC); Physical Sciences and Engineering (PSE) Division
Publisher:
Elsevier BV
Journal:
International Journal of Hydrogen Energy
Issue Date:
Jul-2013
DOI:
10.1016/j.ijhydene.2012.12.001
Type:
Article
ISSN:
03603199
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; KAUST Solar Center (KSC)

Full metadata record

DC FieldValue Language
dc.contributor.authorBoulfrad, Samiren
dc.contributor.authorCassidy, Marken
dc.contributor.authorDjurado, Elisabethen
dc.contributor.authorIrvine, John Ts Sen
dc.contributor.authorJabbour, Ghassan E.en
dc.date.accessioned2015-08-03T11:12:21Zen
dc.date.available2015-08-03T11:12:21Zen
dc.date.issued2013-07en
dc.identifier.issn03603199en
dc.identifier.doi10.1016/j.ijhydene.2012.12.001en
dc.identifier.urihttp://hdl.handle.net/10754/562842en
dc.description.abstractIn this work, a highly scalable technique is proposed as an alternative to the lab-scale impregnation method. LSCM-CGO powders were pre-coated with 5 wt% of Ni from nitrates. After appropriate mixing and adequate heat treatment, coated powders were then dispersed into organic based vehicles to form a screen-printable ink which was deposited and fired to form SOFC anode layers. Electrochemical tests show a considerable enhancement of the pre-coated anode performances under 50 ml/min wet H2 flow with polarization resistance decreased from about 0.60cm2 to 0.38 cm2 at 900 C and from 6.70 cm2 to 1.37 cm2 at 700 C. This is most likely due to the pre-coating process resulting in nano-scaled Ni particles with two typical sizes; from 50 to 200 nm and from 10 to 40 nm. Converging indications suggest that the latter type of particle comes from solid state solution of Ni in LSCM phase under oxidizing conditions and exsolution as nanoparticles under reducing atmospheres. Copyright © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.en
dc.publisherElsevier BVen
dc.subjectElectrodeen
dc.subjectImpregnationen
dc.subjectNano-catalysten
dc.subjectPre-coatingen
dc.subjectSOECen
dc.subjectSOFCen
dc.titlePre-coating of LSCM perovskite with metal catalyst for scalable high performance anodesen
dc.typeArticleen
dc.contributor.departmentKAUST Solar Center (KSC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalInternational Journal of Hydrogen Energyen
dc.contributor.institutionSchool of Chemistry, University of St-Andrews, Fife, United Kingdomen
dc.contributor.institutionLEPMI, UMR 5279, Université de Savoie UJF, Grenoble, Franceen
kaust.authorBoulfrad, Samiren
kaust.authorJabbour, Ghassan E.en
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