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Effect of Surface Modification on Electrochemical Performance of La0.6Sr0.4Co0.2Fe0.8O3-σ Cathode Material
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Changkun CAI1, 2, Manyi XIE1, 2, Yuanyuan LIU1, 2, Ke XUE1, 2, Shuting LI1, 2, Shengli AN1, 2
Journal of the Chinese Ceramic Society | 2021, 49(1) : 49 - 55
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Journal of the Chinese Ceramic Society | 2021, 49(1): 49-55
• Special Issue on SOFC •
Effect of Surface Modification on Electrochemical Performance of La0.6Sr0.4Co0.2Fe0.8O3-σ Cathode Material
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Changkun CAI1, 2, Manyi XIE1, 2, Yuanyuan LIU1, 2, Ke XUE1, 2, Shuting LI1, 2, Shengli AN1, 2
Affiliations
  • 1.School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China
  • 2.Inner Mongolia Key Laboratory of Advanced Ceramic Materials and Devices, Baotou 014010, Inner Mongolia, China

    • CAI Changkun (1990-), male, Doctorial candidate. E-mail:

About Author:

CAI Changkun (1990-), male, Doctorial candidate. E-mail:

Published: 2021-01-20 doi: 10.14062/j.issn.0454-5648.20200566
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A solid oxide fuel cell cathode material La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) powder was prepared by a citric acid-EDTA complex method. Sm0.2Ce0.8O1.9 (SDC) was used as an electrolyte to prepare LSCF/SDC/LSCF symmetric electrode cells. The mixed solution of La(NO3)3、Ni(NO3)2 and Fe(NO3)3 was impregnated on both electrodes of LSCF/SDC/LSCF, and the surface-modified cathodes were obtained after sintering at 850℃. The phase structure characteristics, electrochemical AC impedance, electrochemical catalytic activity and single cell output performance of the surface-modified cathode material after impregnation were investigated. The results show that La0.62Sr0.38Ni0.03Co0.19Fe0.78O3-δ solid solution with the similar structure to LSCF is formed by the impregnation method. The nanoparticles generated on the surface enhances the ability of the cathode material to adsorb and dissociate O2, and exhibits a lower polarization resistance. The polarization resistance of LSNCF cathode material is 0.083 Ω·cm2 at 800℃, the polarization impedance of LSNCF cathode material is 0.117 Ω·cm2 at 800℃ after 7 200-min continuous operation. For assemble anode-supported cells with Ni-SDC as an anode, SDC as an electrolyte and LSNCF as a cathode, the maximum power density is 693 mW/cm2 at 750℃.

solid oxide fuel cells  /  cathode  /  perovskite  /  surface modification
蔡长焜, 谢满意, 刘媛媛, 薛柯, 李舒婷, 安胜利. 表面修饰对镧锶钴铁阴极材料电化学性能的影响. 硅酸盐学报, 2021 , 49 (1) : 49 -55 . DOI: 10.14062/j.issn.0454-5648.20200566
Changkun CAI, Manyi XIE, Yuanyuan LIU, Ke XUE, Shuting LI, Shengli AN. Effect of Surface Modification on Electrochemical Performance of La0.6Sr0.4Co0.2Fe0.8O3-σ Cathode Material[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (1) : 49 -55 . DOI: 10.14062/j.issn.0454-5648.20200566
Appendix
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Year 2021 volume 49 Issue 1
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Article Info
doi: 10.14062/j.issn.0454-5648.20200566
  • Receive Date：2020-07-31
  • Online Date：2026-10-30
  • Published：2021-01-20
Article Data
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History
  • Received：2020-07-31
  • Revised：2020-09-21
Funding
Affiliations
    1.School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China
    2.Inner Mongolia Key Laboratory of Advanced Ceramic Materials and Devices, Baotou 014010, Inner Mongolia, China

Corresponding:

An Shengli (1961-), male, Ph. D.,Professor E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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