Deposition of nanostructured LSM perovskite thin film on dense YSZ substrate by airbrushed solution combustion (ASC) for application in SOFC cathodes

Tarragó, Diego Pereira; Moreno, B.; Chinarro, E.; Malfatti, Célia de Fraga; Sousa, Vânia Caldas de

doi:10.1016/j.ijhydene.2020.02.031

Cited by 11 publications

(3 citation statements)

References 52 publications

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“…The stoichiometric oxygen content values are 66 atom% and 60 atom%, very similar to those obtained by EDX, in spite of the semi-quantitative character of this tool. In the YSZ layer, Zr concentration is much higher than that of Y, as expected, and both concentrations fall at a very short distance, below 0.5 µm in the coating, demonstrating that the diffusion of the substrate elements is negligible [37] and even lower than that reported for similar materials using the same approach [38]. Nevertheless, in contact with the YSZ, Mn and La of LSM diffuse into the substrate and a cubic zirconia solid solution with divalent manganese and trivalent lanthanum ions is formed, as proposed elsewhere [39].…”

Section: Shaping Of Lsm Coatings Onto Ysz Tapessupporting

confidence: 77%

“…Nevertheless, in contact with the YSZ, Mn and La of LSM diffuse into the substrate and a cubic zirconia solid solution with divalent manganese and trivalent lanthanum ions is formed, as proposed elsewhere [39]. The thin transition layer has a total depth of by 1 µm, where the increasing concentrations of La and Mn represent a region with more intense electrochemical activity, as suggested elsewhere [38].…”

Section: Shaping Of Lsm Coatings Onto Ysz Tapesmentioning

confidence: 60%

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Colloidal Processing of Y0.08Zr0.92O2/La0.80Sr0.20MnO3 Semi-Cells Using a Sr-Doped Lanthanum Manganite Synthesized by a Citrate Route

2021

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In this paper, the interface between yttria stabilized zirconia (Y0.08Zr0.92O2, YSZ) electrolyte and Sr-doped lanthanum manganite (La0.80Sr0.20MnO3, LSM) cathode for solid oxide fuel cells (SOFCs) is studied. For such a purpose, the combination of a suitable synthesis route for obtaining fine powders and simple aqueous colloidal shaping routes is proposed. The synthesis of nanosized particles of La0.80Sr0.20MnO3 by a citrate route and their full characterization, including the colloidal stability and the densification and phase development determined by X-ray diffraction and electron microscopy at different temperatures, is reported. In a second step, YSZ tapes were obtained by aqueous tape casting and used as substrates for the preparation of LSM coatings by dip-coating using aqueous slurries. YSZ tapes were used either in the green state or after a pre-sintering treatment. Co-sintering at 1350 °C led to a sharp interface with excellent adhesion, also achieved when coating pre-sintered tapes. In both cases, the substrates are dense and the coatings are porous, with thicknesses of 85 and 60 μm for green and pre-sintered tapes, respectively. No diffusion of Zr and Y occurs at the LSM layer, but some diffusion of La and Mn towards the YSZ layer takes place.

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Section: Shaping Of Lsm Coatings Onto Ysz Tapessupporting

confidence: 77%

Section: Shaping Of Lsm Coatings Onto Ysz Tapesmentioning

confidence: 60%

Colloidal Processing of Y0.08Zr0.92O2/La0.80Sr0.20MnO3 Semi-Cells Using a Sr-Doped Lanthanum Manganite Synthesized by a Citrate Route

2021

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“…Environmental energy conversion devices with high performance are vital for the sustainable development of energy systems. Solid oxide fuel cells (SOFCs) now play an essential part in new energy resources due to the potential for high efficiency and relatively low levels of emissions. − Meanwhile, intermediate-temperature solid oxide fuel cells (IT-SOFCs) are attracting increasing attention with their exceptional stability, excellent compatibility, and low energy input to the operating temperature. However, the decreasing operation temperature results in unsatisfactory cell performance due to large polarization resistance of cathode at the intermediate temperature (500–700 °C).…”

Section: Introductionmentioning

confidence: 99%

Electrospun Core–Shell Fibers for High-Efficient Composite Cathode-Based Solid Oxide Fuel Cells

Yang

Wang

et al. 2021

Energy Fuels

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Fibrous perovskite oxide has been the most promising cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs) due to its efficient mass and charge transfer. Herein, a core−shell fiber-structured YCo 0.5 Fe 0.5 O 3 (YCF)− Gd 0.1 Ce 0.9 O 1.95 (GDC) cathode is synthesized via the modified electrospinning technique. These unique YCF−GDC fibers exhibit a uniform diameter of 300 nm, and the GDC particles are attached to the YCF fiber cores. The electrochemical performance demonstrates a relatively low area-specific resistance of 0.66 Ω•cm 2 at 550 °C in air, which is much lower than 1.56 Ω•cm 2 of pure YCF fiber cathode. Moreover, the distribution of relaxation times (DRT) analysis results indicate that the introduction of GDC nanoparticles and the core−shell structure greatly facilitate oxygen-ion conduction and charge transfer processes, and the oxygen incorporation process plays a major role in the total polarization resistance. The NiO−GDC|GDC|fibrous YCF−GDC fuel cell shows a maximum power density of 426.5 mW•cm −2 at 550 °C. These results display that the core−shell fiber-structured YCF− GDC composite oxide is a promising candidate of highly active cathode for IT-SOFCs.

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Advances in Advanced In Situ Assembled Composite Electrode Materials for Enhanced Solid Oxide Cell Performance

Song,

Wang

et al. 2024

Adv Funct Materials

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Solid oxide cells (SOCs) hold considerable promise as devices for efficient, reversible conversion between chemical and electrical energy, facilitating a global shift toward renewable energy. Electrode performance is critical for SOC efficiency and durability and composite materials are key to developing high‐performance electrode catalysts. However, conventional mechanical mixing and infiltration methods often lead to large particle sizes, uneven distribution, and weak interfacial interactions, thus limiting electrochemical activity and longevity. Recent advancements have produced powerful new strategies for creating composite materials. These include metal exsolution and oxide segregation for fuel electrodes and one‐pot synthesis, segregation, phase reaction, and dynamic cation exchange for air electrodes. These techniques yield highly active, uniform nano‐catalysts and robust multi–phase interfacial contacts, significantly improving electrochemical activity and durability. This work reviews these advanced strategies and their applications in SOCs. It provides valuable insights for designing and optimizing SOC catalyst materials, accelerating the development of this vital energy conversion technology.

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Deposition of nanostructured LSM perovskite thin film on dense YSZ substrate by airbrushed solution combustion (ASC) for application in SOFC cathodes

Cited by 11 publications

References 52 publications

Colloidal Processing of Y0.08Zr0.92O2/La0.80Sr0.20MnO3 Semi-Cells Using a Sr-Doped Lanthanum Manganite Synthesized by a Citrate Route

Colloidal Processing of Y0.08Zr0.92O2/La0.80Sr0.20MnO3 Semi-Cells Using a Sr-Doped Lanthanum Manganite Synthesized by a Citrate Route

Electrospun Core–Shell Fibers for High-Efficient Composite Cathode-Based Solid Oxide Fuel Cells

Advances in Advanced In Situ Assembled Composite Electrode Materials for Enhanced Solid Oxide Cell Performance

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