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dc.contributor.authorXu, Haoran
dc.contributor.authorChen, Bin
dc.contributor.authorIrvine, John
dc.contributor.authorNi, Meng
dc.date.accessioned2017-10-22T23:32:08Z
dc.date.available2017-10-22T23:32:08Z
dc.date.issued2016-12-21
dc.identifier.citationXu , H , Chen , B , Irvine , J & Ni , M 2016 , ' Modeling of CH 4 -assisted SOEC for H 2 O/CO 2 co-electrolysis ' , International Journal of Hydrogen Energy , vol. 41 , no. 47 , pp. 21839-21849 . https://doi.org/10.1016/j.ijhydene.2016.10.026en
dc.identifier.issn0360-3199
dc.identifier.otherPURE: 247035540
dc.identifier.otherPURE UUID: 91a1266a-b5b9-400b-9551-8b1c7862621d
dc.identifier.otherRIS: urn:45FE80F6DA03A13101C3CADC2E7C5AD2
dc.identifier.otherScopus: 84997221436
dc.identifier.otherWOS: 000389786500001
dc.identifier.otherORCID: /0000-0002-8394-3359/work/68280871
dc.identifier.urihttps://hdl.handle.net/10023/11902
dc.descriptionThis research was supported by a grant of SFC/RGC Joint Research Scheme (X-PolyU/501/14) from Research Grant Council, University Grants Committee, Hong Kong SAR.en
dc.description.abstractCo-electrolysis of H2O and CO2 in a solid oxide electrolysis cell (SOEC) is promising for simultaneous energy storage and CO2 utilization. Fuel-assisted H2O electrolysis by SOEC (SOFEC) has been demonstrated to be effective in reducing power consumption. In this paper, the effects of fuel (i.e. CH4) assisting on CO2/H2O co-electrolysis are numerically studied using a 2D model. The model is validated with the experimental data for CO2/H2O co-electrolysis. One important finding is that the CH4 assisting is effective in lowering the equilibrium potential of SOEC thus greatly reduces the electrical power consumption for H2O/CO2 co-electrolysis. The performance of CH4-assisted SOFEC increases substantially with increasing temperature, due to increased reaction kinetics of electrochemical reactions and CH4 reforming reaction. The CH4-assisted SOFEC can generate electrical power and syngas simultaneously at a low current density of less than 600 Am−2 and at 1123 K. In addition, different from conventional SOEC whose performance weakly depends on the anode gas flow rate, the CH4-assisted SOFEC performance is sensitive to the anode gas flow rate (i.g. peak current density is achieved at an anode flow rate of 70 SCCM at 1073 K). The model can be used for subsequent design optimization of SOFEC to achieve high performance energy storage.
dc.format.extent11
dc.language.isoeng
dc.relation.ispartofInternational Journal of Hydrogen Energyen
dc.rights© 2016 Hydrogen Energy Publications LLC. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at: https://doi.org/10.1016/j.ijhydene.2016.10.026en
dc.subjectSolid oxide electrolyzer cellen
dc.subjectMathematical modelingen
dc.subjectFuel assistingen
dc.subjectCo-electrolysisen
dc.subjectCogenerationen
dc.subjectSolid oxide fuel cellen
dc.subjectQD Chemistryen
dc.subjectNDASen
dc.subject.lccQDen
dc.titleModeling of CH4-assisted SOEC for H2O/CO2 co-electrolysisen
dc.typeJournal articleen
dc.description.versionPostprinten
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.identifier.doihttps://doi.org/10.1016/j.ijhydene.2016.10.026
dc.description.statusPeer revieweden
dc.date.embargoedUntil2017-10-22


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