A niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500 °C

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dc.contributor.authorLi, MRen_AU
dc.contributor.authorZhao, MWen_AU
dc.contributor.authorLi, Fen_AU
dc.contributor.authorZhou, Wen_AU
dc.contributor.authorPeterson, VKen_AU
dc.contributor.authorXu, XYen_AU
dc.contributor.authorShao, ZPen_AU
dc.contributor.authorGentle, IRen_AU
dc.contributor.authorZhu, ZHen_AU
dc.date.accessioned2021-08-25T04:15:17Zen_AU
dc.date.available2021-08-25T04:15:17Zen_AU
dc.date.issued2017-01-03en_AU
dc.date.statistics2021-08-24en_AU
dc.descriptionOpen Access. This work is licensed under a Creative Commons Attribution 4.0 International License.en_AU
dc.description.abstractThe slow activity of cathode materials is one of the most significant barriers to realizing the operation of solid oxide fuel cells below 500 °C. Here we report a niobium and tantalum co-substituted perovskite SrCo0.8Nb0.1Ta0.1O3−δ as a cathode, which exhibits high electroactivity. This cathode has an area-specific polarization resistance as low as ∼0.16 and ∼0.68 Ω cm2 in a symmetrical cell and peak power densities of 1.2 and 0.7 W cm−2 in a Gd0.1Ce0.9O1.95-based anode-supported fuel cell at 500 and 450 °C, respectively. The high performance is attributed to an optimal balance of oxygen vacancies, ionic mobility and surface electron transfer as promoted by the synergistic effects of the niobium and tantalum. This work also points to an effective strategy in the design of cathodes for low-temperature solid oxide fuel cells. © 2017 Springer Nature Limited. Open Access. This work is licensed under a Creative Commons Attribution 4.0 International License.en_AU
dc.identifier.citationLi, M., Zhao, M., Li, F., Zhou, W., Peterson, V. K., Xu, X., Shao, Z. P., Gentle, I. R. & Zhu, Z. (2017). A niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500° C. Nature communications, 8, 1-9. doi:10.1038/ncomms13990en_AU
dc.identifier.issn2041-1723en_AU
dc.identifier.journaltitleNature communicationsen_AU
dc.identifier.pagination1-9en_AU
dc.identifier.urihttps://doi.org/10.1038/ncomms13990en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11497en_AU
dc.identifier.volume8en_AU
dc.language.isoenen_AU
dc.publisherSpringer Natureen_AU
dc.subjectCatalysisen_AU
dc.subjectMaterialsen_AU
dc.subjectEnergyen_AU
dc.subjectCathodesen_AU
dc.subjectPerovskiteen_AU
dc.subjectNiobiumen_AU
dc.subjectTantalumen_AU
dc.titleA niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500 °Cen_AU
dc.typeJournal Articleen_AU
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