Neutron and synchrotron characterisation techniques for hydrogen fuel cell materials

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dc.contributor.authorLamb, Ken_AU
dc.contributor.authorKirby, Nen_AU
dc.contributor.authorBartlett, JRen_AU
dc.contributor.authorPeterson, VKen_AU
dc.contributor.authorAppadoo, Den_AU
dc.contributor.authorJiang, SPen_AU
dc.contributor.authorDe Marco, Ren_AU
dc.date.accessioned2023-12-08T05:44:40Zen_AU
dc.date.available2023-12-08T05:44:40Zen_AU
dc.date.issued2021-11-24en_AU
dc.date.statistics2023-04-24en_AU
dc.description.abstractHydrogen fuel cells and other renewable energy technologies have specific materials and functional needs which can be more fully understood using neutron and synchrotron characterisation techniques. In this presentation, a materials which has applications in proton exchange membranes is studied with a variety to techniques to develop a comprehensive understanding of the functional-structural relationship. The materials used here is phosphotungstic acid (HPWA) stabilised in an ‘inert’ mesoporous silica host material. This aim of this research is to develop an understanding of the interaction between the HPWA and the silica and whether different structures or surface chemistries have advantageous or detrimental effects. Two silica symmetries used were Ia3 ̅d (face centred cubic bi-continuous) and P6mm (2D hexagonal with cylindrical pores) which were vacuum impregnated with solutions of HPWA in a range of concentrations. The resulting powder samples were then analysed using small angle x-ray scattering (SAXS), inductively coupled plasma emissions spectroscopy (ICP-OES), nitrogen gas adsorption/desorption, near edge X-ray absorption fine structure (NEXAFS/X-ray absorption near edge structure/XANES) of the O and Si k-edges, Fourier transform infra-red spectroscopy (FTIR), Raman spectroscopy, and then formed into a disk using polyethylene as the binder for electrical impedance spectroscopy (EIS). The insights gained from this systematic study indicate that the surface chemistry of the silica host has a significant effect on the performance, uptake and interactions with the HPWA anions, where lower concentrations of HPWA result in stronger host:HPWA interactions but lower conductivity. © The Authorsen_AU
dc.identifier.citationLamb, K., Kirby, N., Bartlett, J., Peterson, V., Appadoo, D., Jiang, S. P., & De Marco, R (2021). Neutron and synchrotron characterisation techniques for hydrogen fuel cell materials. Presentation to the ANSTO User Meeting, 24-26 November 2021, Online. Retrieved from: https://events01.synchrotron.org.au/event/146/contributions/4341/contribution.pdfen_AU
dc.identifier.conferenceenddate2021-11-26en_AU
dc.identifier.conferencenameANSTO User Meeting 2021en_AU
dc.identifier.conferenceplaceOnlineen_AU
dc.identifier.conferencestartdate2021-11-24en_AU
dc.identifier.urihttps://events01.synchrotron.org.au/event/146/contributions/4341/contribution.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15279en_AU
dc.language.isoenen_AU
dc.publisherAustralian Nuclear Science and Technology Organisationen_AU
dc.subjectNeutronsen_AU
dc.subjectSynchrotronsen_AU
dc.subjectHydrogenen_AU
dc.subjectFuel cellsen_AU
dc.subjectHydrogen fuel cellsen_AU
dc.subjectMaterialsen_AU
dc.subjectTungstophosphoric aciden_AU
dc.subjectSmall angle scatteringen_AU
dc.subjectSilicaen_AU
dc.titleNeutron and synchrotron characterisation techniques for hydrogen fuel cell materialsen_AU
dc.typeConference Presentationen_AU
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