Enhanced CO2 electrolysis with a SrTiO3 cathode through a dual doping strategy
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...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Published: |
R S C Publications
2019
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| Online Access: | http://hdl.handle.net/20.500.11937/73876 |
| _version_ | 1848763121571725312 |
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| author | Ye, L. Hu, X. Wang, X. Chen, F. Tang, D. Dong, Dehua Xie, K. |
| author_facet | Ye, L. Hu, X. Wang, X. Chen, F. Tang, D. Dong, Dehua Xie, K. |
| author_sort | Ye, L. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T10:58:26Z |
| format | Journal Article |
| id | curtin-20.500.11937-73876 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:58:26Z |
| publishDate | 2019 |
| publisher | R S C Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-738762019-08-12T07:39:05Z Enhanced CO2 electrolysis with a SrTiO3 cathode through a dual doping strategy Ye, L. Hu, X. Wang, X. Chen, F. Tang, D. Dong, Dehua Xie, K. 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. 2019 Journal Article http://hdl.handle.net/20.500.11937/73876 10.1039/c8ta10188d R S C Publications restricted |
| spellingShingle | Ye, L. Hu, X. Wang, X. Chen, F. Tang, D. Dong, Dehua Xie, K. Enhanced CO2 electrolysis with a SrTiO3 cathode through a dual doping strategy |
| title | Enhanced CO2 electrolysis with a SrTiO3 cathode through a dual doping strategy |
| title_full | Enhanced CO2 electrolysis with a SrTiO3 cathode through a dual doping strategy |
| title_fullStr | Enhanced CO2 electrolysis with a SrTiO3 cathode through a dual doping strategy |
| title_full_unstemmed | Enhanced CO2 electrolysis with a SrTiO3 cathode through a dual doping strategy |
| title_short | Enhanced CO2 electrolysis with a SrTiO3 cathode through a dual doping strategy |
| title_sort | enhanced co2 electrolysis with a srtio3 cathode through a dual doping strategy |
| url | http://hdl.handle.net/20.500.11937/73876 |