期刊
NANO ENERGY
卷 71, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2020.104598
关键词
Carbon dioxide electrolysis; Solid oxide electrolysis cell; Perovskite; Single site catalysis; Palladium
类别
资金
- National Key R&D Program of China [2017YFA0700102]
- National Natural Science Foundation of China [21573222, 91545202]
- Dalian National Laboratory for Clean Energy [DNL180404]
- Dalian Institute of Chemical Physics [DICP DMTO201702]
- Dalian Outstanding Young Scientist Foundation [2017RJ03]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB17020200]
- CAS Youth Innovation Promotion [2015145]
- 14th Six Talents Peak Project of Jiangsu Province [XNYQC-016]
- State Key Laboratory of Catalysis [N-18-09]
Pd single site-anchored La0.5Sr0.5FeO3-delta-Ce0.8Sm0.2O2-x (Pd-LSF(SDC)) cathode is constructed for CO2 electrolysis in solid oxide electrolysis cells. The decoration of Pd species on LSF greatly improves CO2 electrolysis performance with 65.7% enhancement in current density at 1.6 V compared with the LSF counterpart. Electrochemical and density functional theory calculation results suggest that the Pd species are atomically anchored on the LSF phase. The coordinatively unsaturated Pd with oxygen vacancies facilitates the CO2 dissociative adsorption, electron transfer and mass transport, thus greatly decreases the polarization resistance of the cathode and promotes the CO2 electrolysis performance. This work provides an effective strategy to design the supported single site catalyst for high-temperature CO2 electrolysis.
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