Comprehensive Quantification of LSCrRu-GDC Anode Microstructures by Three-dimensional Reconstruction Using X-ray Nano Computerised Tomography

Abstract

We selected a cell with superior electrochemical performance to characterization microstructure characterization. Here, we employed high-resolution SEM and X-ray nano-CT to investigate a porous LSCrRu-GDC composite anode. These experimental results are utilized for characterize and quantify the key structural parameters, such as the volume ratio of the three phases (LSCrRu, GDC, and pore), connected porosity, tortuosity, surface area of each phase, interface of LSCrRu/GDC, and three-phase boundary length (TPB where the LSCrRu, GDC and fuel gas phases come together) of the anode.

Keywords

solid oxide fuel cell / LSCrRu-GDC anode / nano-CT / three-phase boundary density

References

[1] Zhong CR. Study on the Application of Micro-nano Fabrication and Characterization of FIB-SEM Dual Beam System. 2021, Shanghai, East China Normal University[D]

[2] Shearing PR, Gelb J, Brandon NP, et al. . X-ray Nano Computerised Tomography of SOFC Electrodes using a Focused Ion Beam Sample-preparation Technique. Journal of the European Ceramic Society. 2010, 30(8): 1 809-1 814 J]

[3] Wargo EA, Kotaka T, Tabuchi Y, et al. . Comparison of Focused Ion Beam Versus Nano-scale X-ray Computed Tomography for Resolving 3-D Microstructures of Porous Fuel Cell Materials. Journal of Power Sources. 2013, 241: 608-618 J]

[4] Lu XK, Oluwadamilola OT, Antonio B, et al. . Multi-length Scale Tomography for the Determination and Optimization of the Effective Microstructural Properties in Novel Hierarchical Solid Oxide Fuel Cell Anodes. Journal of Power Sources. 2017, 367: 177-186 J]

[5] Lu XK, Heenan TMM, Bailey JJ, et al. . Correlation between Triple Phase Boundary and the Microstructure of Solid Oxide Fuel Cell Anodes: The Role of Composition, Porosity and Ni Densification. Journal of Power Sources. 2017, 365: 210-219 J]

[6] Heenan TMM, Finegan DP, Tjaden B, et al. . 4D Nano-tomography of Electrochemical Energy Devices using Lab-based X-ray Imaging. Nano Energy. 2018, 47: 556-565 J]

[7] He S, Saunders M, Chen KF, et al. . A FIB-STEM Study of Strontium Segregation and Interface Formation of Directly Assembled La_0.6Sr_0.4 Co_0.2Fe_0.8O_3−δ Cathode on Y₂O₃-ZrO₂ Electrolyte of Solid Oxide Fuel Cells. Journal of The Electrochemical Society. 2018, 165(7): F417 J]

[8] Fan D, Liu F, Li J, et al. . A Microchannel Reactor-integrated Ceramic Fuel Cell with Dual-coupling Effect for Efficient Power and Syngas Cogeneration from Methane. Applied Catalysis B: Environmental. 2021, 297: 926-3 J]

[9] Li Q, Chai D, Wang L, et al. . Fine Three-dimensional Simulation of the Heterogeneous Anode of a Solid Oxide Fuel Cell with Direct Internal Reforming. Chemical Engineering Science. 2021, 5(242): 1-16[J]

[10] Yang Y, Liu F, Han X, et al. . Highly Efficient and Stable Fuel-catalyzed Dendritic Microchannels for Dilute Ethanol-fueled Solid Oxide Fuel Cells. Applied Energy. 2022, 9(307): 1-10[J]

[11] Kobsiriphat W, Madsen BD, Wang Y, et al. . La_0.8Sr_0.2Cr_1−xRu_xO_3−δ-Gd_0.1Ce_0.9O_1.95 Solid Oxide Fuel Cell Anodes: Ru Precipitation and Electrochemical Performance. Solid State Ionics. 2009, 180: 257-264 J]

[12] Bierschenk DM, Barnett SA. Electrochemical Characteristics of La_0.8Sr_0.2Cr_0.82Ru_0.18O_3−δ-Gd_0.1Ce_0.9O₂ Solid Oxide Fuel Cell Anodes in H₂-H₂O-CO-CO₂ Fuel Mixtures. Journal of Power Sources. 2012, 201: 95-102 J]

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Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature