期刊
NATURE COMMUNICATIONS
卷 8, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms14785
关键词
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资金
- Natural Science Foundation of China [91545123]
- Natural Science Foundation of Fujian Province [2016J01275]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB20000000]
- Hundred Talents Program of the Chinese Academy of Sciences
- EPSRC Platform Grant [EP/K015540/1]
- Royal Society Wolfson Merit Award [WRMA 2012/R2]
- EPSRC [EP/K015540/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K015540/1] Funding Source: researchfish
Sustainable future energy scenarios require significant efficiency improvements in both electricity generation and storage. High-temperature solid oxide cells, and in particular carbon dioxide electrolysers, afford chemical storage of available electricity that can both stabilize and extend the utilization of renewables. Here we present a double doping strategy to facilitate CO2 reduction at perovskite titanate cathode surfaces, promoting adsorption/activation by making use of redox active dopants such as Mn linked to oxygen vacancies and dopants such as Ni that afford metal nanoparticle exsolution. Combined experimental characterization and first-principle calculations reveal that the adsorbed and activated CO2 adopts an intermediate chemical state between a carbon dioxide molecule and a carbonate ion. The dual doping strategy provides optimal performance with no degradation being observed after 100 h of high-temperature operation and 10 redox cycles, suggesting a reliable cathode material for CO2 electrolysis.
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