A High-Strength Solid Oxide Fuel Cell Supported by an Ordered Porous Cathode Membrane

The phase inversion tape casting has been widely used to fabricate open straight porous supports for solid oxide fuel cells (SOFCs), which can offer better gas transmission and minimize the concentration polarization. However, the overall weak strength of the macro-porous structure still limits the...

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Bibliographic Details
Published in:Membranes (Basel) 2024-02, Vol.14 (2), p.44
Main Authors: Chen, Ting, Zhang, Huilin, Zheng, Guozhu, Xue, Qiang, Huang, Zuzhi, Zhou, Yucun, Wang, Shaorong
Format: Article
Language:English
Subjects:
Catalysts
Cathodes
Dip coatings
DRT analysis
Electrode polarization
Electrolytes
Electrons
Flexural strength
Fuel cell industry
Fuel cells
Fuel technology
Gas transmission
high strength
Immersion coating
Liu, Timothy
Membranes
Nitrates
ordered cathode membrane
Phase inversion
Phase shift
Sintering
Sintering (powder metallurgy)
solid oxide fuel cell
Solid oxide fuel cells
Spectrum analysis
Tape casting
Temperature
Yttria-stabilized zirconia
Yttrium oxide
Zirconia
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Summary:The phase inversion tape casting has been widely used to fabricate open straight porous supports for solid oxide fuel cells (SOFCs), which can offer better gas transmission and minimize the concentration polarization. However, the overall weak strength of the macro-porous structure still limits the applications of these SOFCs. In this work, a novel SOFC supported by an ordered porous cathode membrane with a four-layer configuration containing a finger-like porous 3 mol% yttria- stabilized zirconia (3YSZ)-La Sr Co Fe O (LSCF) catalyst, porous 8 mol% yttria-stabilized zirconia (8YSZ)-LSCF catalyst, and dense 8YSZ porous 8YSZ-NiO catalyst is successfully prepared by the phase inversion tape casting, dip-coating, co-sintering, and impregnation process. The flexural strength of the open straight porous 3YSZ membrane is as high as 131.95 MPa, which meets the requirement for SOFCs. The cathode-supported single cell shows a peak power density of 540 mW cm at 850 °C using H as the fuel. The degradation mechanism of the SOFC is investigated by the combination of microstructure characterization and distribution of relaxation times (DRT) analysis.
ISSN:2077-0375
2077-0375
DOI:10.3390/membranes14020044