Mn离子掺杂Pr0.5Ba0.5Fe0.9Mn0.1O3-δ钙钛矿SOEC阴极电解CO2性能研究

doi:10.11896/cldb.23040185

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Abstract Cathode is the site where the CO₂ reduction reaction occurs in solid oxide electrolysis cell (SOEC) for CO₂ electrolysis, and it is also the key component for SOEC to achieve high performance. The electrochemical performance of Pr_0.5Ba_0.5Fe_0.9Mn_0.1O_3-δ (PBFM) perovskite as SOEC cathode catalyst to convert CO₂ to CO was studied. The result shows that the cell based on PBFM cathode shows a higher current density of 1.7 A·cm^-2 at applied 1.8 V voltage and 850 ℃. There is an approximately 30% performance improvement compared to the SOEC based on PBF cathode. Meanwhile, the polarization impedance has also decreased by about 60%. The increased current density originates from the improved oxygen vacancy. Furthermore, the cell with this active catalyst exhibits a stable CO₂ electrolysis performance for 70 h operation at a stable voltage of 1.3 V at 800 ℃, and no carbon deposition is detected after the long-term test. The research suggests that PBFM can be a talented candidate as SOEC cathode for CO₂ electrolysis.

Key words： solid oxide electrolysis cells CO₂ electrolysis perovskite material cathode catalyst metal ion doping

Published: 25 April 2024 Online: 2024-04-28

CLC number:

TQ151

Fund:National Key Research and Development Program of China (2020YFB1506304).

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	TANG Jiangcheng
	ZHAO Xianxing
	CAI Runtian
	YANG Chenghao
	CHI Bo

Cite this article:

TANG Jiangcheng,ZHAO Xianxing,CAI Runtian, et al. Performance Research of CO₂ Electrolysis of Mn Doped Pr_0.5Ba_0.5Fe_0.9Mn_0.1O_3-δ Perovskite as SOEC Cathode[J]. Materials Reports, 2024, 38(8): 23040185-6.

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https://www.mater-rep.com/EN/10.11896/cldb.23040185 OR https://www.mater-rep.com/EN/Y2024/V38/I8/23040185

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