Publication:
Numerical investigation on surface coverage of weakly-adsorbed molecular SO 2 contaminant in a PEM fuel cell cathode

Simple item page
dc.citedby1
dc.contributor.authorHasmady S.en_US
dc.contributor.authorFushinobu K.en_US
dc.contributor.authorid7201618347en_US
dc.contributor.authorid7004131266en_US
dc.date.accessioned2023-05-29T06:54:49Z
dc.date.available2023-05-29T06:54:49Z
dc.date.issued2018
dc.description.abstractThis paper describes attempt to numerically predict surface coverage of SO 2 contaminant in a PEMFC cathode, as a step towards assessing its impact towards cell performance. Three-dimensional macro-homogeneous conservation equations of two-phase fluid flow is coupled with micro-scale cathode ORR kinetics to solve for surface coverage distribution of O-ad and SO 2 -ad at the surface of the catalyst layer for bulk SO 2 concentrations of 2.5 and 5.0 ppm. At 2.5 ppm, SO 2 -ad is predicted to block ca. 20% of the active sites at cell current density of 0.2 A/cm 2 . The effect of SO 2 -ad blockage is then correlated with loss in cell performance. The numerical results are compared with experimental data from literature, which confirms that though the model successfully predicted higher potential loss with higher bulk SO 2 concentration in the reactant feed, inclusion of only weakly-adsorbed SO 2 will under-predict the exact potential loss experienced by the cell. This means strongly adsorbed sulfur containing species must be adopted into the model in order to better predict the severity of degradation of the cell due to SO 2 contamination. � 2018 Authors.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.14419/ijet.v7i4.35.23110
dc.identifier.epage802
dc.identifier.issue4
dc.identifier.scopus2-s2.0-85059235200
dc.identifier.spage796
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85059235200&doi=10.14419%2fijet.v7i4.35.23110&partnerID=40&md5=cd02d2564a40e9f5a266094b94ae226a
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/24050
dc.identifier.volume7
dc.publisherScience Publishing Corporation Incen_US
dc.sourceScopus
dc.sourcetitleInternational Journal of Engineering and Technology(UAE)
dc.titleNumerical investigation on surface coverage of weakly-adsorbed molecular SO 2 contaminant in a PEM fuel cell cathodeen_US
dc.typeArticleen_US
dspace.entity.typePublication
Files
Collections
SCOPUS