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Structural Defects Design and Properties Tuning of Double Perovskite Ceramic Anode for Solid Oxide Fuel Cells
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Zhihong DU1, 2, Yuanyuan LI1, Hailei ZHAO1, 2, Yang ZHANG1
Journal of the Chinese Ceramic Society | 2021, 49(1) : 7 - 13
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Journal of the Chinese Ceramic Society | 2021, 49(1): 7-13
• Special Issue on SOFC •
Structural Defects Design and Properties Tuning of Double Perovskite Ceramic Anode for Solid Oxide Fuel Cells
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Zhihong DU1, 2, Yuanyuan LI1, Hailei ZHAO1, 2, Yang ZHANG1
Affiliations
  • 1.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • 2.Beijing Municipal Key Lab for Advanced Energy Materials and Technologies, Beijing 100083, China

    • DU Zhihong (1986-), male, Ph.D., Lecturer. E-mail:

About Author:

DU Zhihong (1986-), male, Ph.D., Lecturer. E-mail:

Published: 2021-01-20 doi: 10.14062/j.issn.0454-5648.20200558
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The crystal defects structure, thermal expansion coefficients, electrical transport property, redox cycling stability, and electrochemical performance of Sr2FeMo0.6Mg0.25Al0.15O6(SFMMA) double perovskite material as a high-performance anode for solid oxide fuel cells (SOFCs) were investigated. The SFMMA has a tetragonal structure of I 4/m at room temperature, but transforms into a cubic structure of at 400℃. The real structure of SFMMA should be in the form of Sr2(Fe0.75Mg0.25)(Mo0.6Fe0.25Al0.15)·O6-δ, generating a plenty amount of anti-site defects FeB' and -FeB-O-FeB'-bonds formed in the crystal lattice, which are beneficial to the formation of oxygen vacancies and migration of oxygen ions. The thermal expansion coefficients of SFMMA anode are 13.0×10-6 K-1 and 17.6×10-6 K-1 at 25-400℃ and 400-900℃, respectively. The electrical conductivity of SFMMA is greater than 35 S/cm in the operating temperature range of 600-900℃. The SFMMA anode shows a fast oxygen surface exchange kinetic and an excellent redox cycling stability. The area specific resistances of SFMMA/La0.4Ce0.6O2(LDC)/La0.8Sr0.2Ga0.8Mg0.2O3(LSGM)/LDC/SFMMA symmetrical half-cell are 0.096, 0.142, 0.239 Ω·cm2 and 0.447 Ω·cm2 at 900, 850, 800℃ and 750℃ in wet H2(3% H2O, 50 mL/min), respectively. The electrolyte supported single cell with the configuration of SFMMA/LDC/LSGM (300 μm)/PrBa0.5Sr0.5Co1.5Fe0.5O5+δ can deliver a maximum power density of 886 mW·cm-2 at 850℃.

solid oxide fuel cells  /  double perovskite  /  anti-site defects  /  electrochemical property  /  redox cycling
杜志鸿, 李媛媛, 赵海雷, 张旸. 固体氧化物燃料电池双钙钛矿陶瓷阳极缺陷结构设计与性能调控. 硅酸盐学报, 2021 , 49 (1) : 7 -13 . DOI: 10.14062/j.issn.0454-5648.20200558
Zhihong DU, Yuanyuan LI, Hailei ZHAO, Yang ZHANG. Structural Defects Design and Properties Tuning of Double Perovskite Ceramic Anode for Solid Oxide Fuel Cells[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (1) : 7 -13 . DOI: 10.14062/j.issn.0454-5648.20200558
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Year 2021 volume 49 Issue 1
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Article Info
doi: 10.14062/j.issn.0454-5648.20200558
  • Receive Date：2020-07-28
  • Online Date：2026-10-30
  • Published：2021-01-20
Article Data
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History
  • Received：2020-07-28
  • Revised：2020-09-21
Funding
Affiliations
    1.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
    2.Beijing Municipal Key Lab for Advanced Energy Materials and Technologies, Beijing 100083, China

Corresponding:

ZHAO Hailei (1966-), Female, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
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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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