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dc.contributor.authorYe, L.
dc.contributor.authorHu, X.
dc.contributor.authorWang, X.
dc.contributor.authorChen, F.
dc.contributor.authorTang, D.
dc.contributor.authorDong, Dehua
dc.contributor.authorXie, K.
dc.identifier.citationYe, L. and Hu, X. and Wang, X. and Chen, F. and Tang, D. and Dong, D. and Xie, K. 2019. Enhanced CO2 electrolysis with a SrTiO3 cathode through a dual doping strategy. Journal of Materials Chemistry A. 7 (6): pp. 2764-2772.

The significant role of perovskite defect chemistry through A-site doping of strontium titanate with lanthanum for CO2 electrolysis properties is demonstrated. Here we present a dual strategy of A-site deficiency and promoting adsorption/activation by making use of redox active dopants such as Mn/Cr linked to oxygen vacancies to facilitate CO2 reduction at perovskite titanate cathode surfaces. Solid oxide electrolysers based on oxygen-excess La0.2Sr0.8Ti0.9Mn(Cr)0.1O3+d, A-site deficient (La0.2Sr0.8)0.9Ti0.9Mn(Cr)0.1O3-d and undoped La0.2Sr0.8Ti1.0O3+d cathodes are evaluated. In situ infrared spectroscopy reveals that the adsorbed and activated CO2 adopts an intermediate chemical state between a carbon dioxide molecule and a carbonate ion. The double strategy leads to optimal performance being observed after 100 h of high-temperature operation and 3 redox cycles, suggesting a promising cathode material for CO2 electrolysis.

dc.publisherR S C Publications
dc.titleEnhanced CO2 electrolysis with a SrTiO3 cathode through a dual doping strategy
dc.typeJournal Article
dcterms.source.titleJournal of Materials Chemistry A
curtin.departmentSchool of Electrical Engineering, Computing and Mathematical Science (EECMS)
curtin.accessStatusFulltext not available

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