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Enhancing electrochemical performance and membrane stability evaluation of carrageenan/polyvinyl alcohol-graphene oxide membrane in passive DEFCs

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dc.citedby0
dc.contributor.authorZakaria Z.en_US
dc.contributor.authorKamarudin S.K.en_US
dc.contributor.authorOsman S.H.en_US
dc.contributor.authorMohamad A.A.en_US
dc.contributor.authorSalehmin M.N.I.en_US
dc.contributor.authorid56167779200en_US
dc.contributor.authorid6506009910en_US
dc.contributor.authorid57221497713en_US
dc.contributor.authorid35605414700en_US
dc.contributor.authorid55628787200en_US
dc.date.accessioned2024-10-14T03:18:06Z
dc.date.available2024-10-14T03:18:06Z
dc.date.issued2023
dc.description.abstractA good electrochemical performance of polymer electrolyte membranes (PEMs) is achieving high membrane selectivity, which is a result of low ethanol permeability and high proton conductivity. Reducing the thickness of PEMs is beneficial for high proton conductivity due to the short distance of proton diffusion. Unfortunately, it results in high ethanol permeability. Thus, achieving high membrane selectivity for good electrochemical performance by balancing the requirements of ethanol permeability and proton conductivity is a critical parameter of PEMs. In this paper, the thickness of the carrageenan/polyvinyl alcohol-graphene oxide membrane was varied from 15 ?m � 30 ?m to identify the optimum thickness for good electrochemical performance. With a 25 ?m membrane thickness, the highest membrane selectivity was performed at 1.609 � 104 S s cm?3, and maximum power density in passive direct ethanol fuel cells was achieved at 14.5 mW cm?2, using 2.0 mg cm?2 anode catalyst loading and 2 M ethanol concentration at 70 �C, respectively. Furthermore, this membrane has sustained electrochemical performance for 1000 h at 70 �C without degrading the membrane stability. � 2023 Elsevier B.V.en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo134613
dc.identifier.doi10.1016/j.matlet.2023.134613
dc.identifier.scopus2-s2.0-85160802493
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85160802493&doi=10.1016%2fj.matlet.2023.134613&partnerID=40&md5=fb4506138e1213d972557098cfd928db
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/34136
dc.identifier.volume347
dc.publisherElsevier B.V.en_US
dc.sourceScopus
dc.sourcetitleMaterials Letters
dc.subjectBiomaterials
dc.subjectCar/PVA-GO membrane
dc.subjectElectrochemical performance
dc.subjectMembrane stability
dc.subjectPolymers
dc.subjectCatalyst selectivity
dc.subjectEthanol
dc.subjectGraphene
dc.subjectMembranes
dc.subjectPolyelectrolytes
dc.subjectProton exchange membrane fuel cells (PEMFC)
dc.subjectCar/PVA-GO membrane
dc.subjectCarrageenans
dc.subjectElectrochemical membranes
dc.subjectElectrochemical performance
dc.subjectGraphene oxides
dc.subjectMembrane selectivity
dc.subjectMembrane stability
dc.subjectOxide membrane
dc.subjectPerformance stability
dc.subjectPolymer electrolyte membranes
dc.subjectProton conductivity
dc.titleEnhancing electrochemical performance and membrane stability evaluation of carrageenan/polyvinyl alcohol-graphene oxide membrane in passive DEFCsen_US
dc.typeArticleen_US
dspace.entity.typePublication
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