Description

Key Properties & Advantages
LSC821’s performance is tailored to its unique particle characteristics and perovskite chemistry:

Controlled Particle Size (20–45 μm): Enables dense packing in thick films and structural components, reducing porosity and enhancing mechanical strength—critical for load-bearing or high-current applications.
Moderate Specific Surface Area (0.2–0.6 m²/g): Balances active surface area with structural stability, preventing excessive sintering while maintaining sufficient sites for oxygen reduction reactions (ORR).
Low Moisture Content (<1 wt.%): Ensures storage stability and prevents agglomeration, facilitating uniform dispersion in slurries or pastes during processing. Perovskite Structural Stability: Retains its ABO₃ crystal structure under high-temperature oxidizing conditions (up to 850°C), ensuring long-term durability in SOFC operational environments. High Electronic Conductivity: Strontium doping (La₀.₈Sr₀.₂) enhances electron transport, making it suitable for current-collecting layers in cathode assemblies. Core Applications Solid Oxide Fuel Cells (SOFCs) LSC821 is engineered for thick-film and structural roles in SOFC systems: Thick-Film Cathodes: Ideal for applications requiring robust, low-porosity cathode layers (e.g., in large-scale SOFC stacks), where mechanical integrity and current distribution are prioritized. Cathode Current Collectors: Facilitates efficient electron transport across the cathode, reducing series resistance in SOFC assemblies. Composite Electrodes: Blends with finer LSC or LSCF powders to optimize porosity and conductivity in multi-layer cathode designs. Oxygen Separation & Catalysis Oxygen Membrane Supports: Serves as a structural support for thin-film oxygen separation membranes, providing mechanical strength while enabling oxygen transport. Catalytic Supports: Acts as a stable support for noble metal catalysts in high-temperature oxidation reactions (e.g., methane conversion), leveraging its chemical inertness and thermal stability. Technical Specifications Parameter Details Chemical Composition La₀.₈Sr₀.₂CoO₃₋δ (perovskite structure) Particle Size (D50) 20–45 μm (laser diffraction) Specific Surface Area 0.2–0.6 m²/g (BET method) Moisture Content <1 wt.% (Karl Fischer titration) Crystal Structure Cubic perovskite Color Dark gray to black crystalline powder Quality Assurance Each batch of LSC821 undergoes rigorous testing to ensure reliability: X-ray diffraction (XRD) to confirm perovskite phase purity. Particle size analysis (laser diffraction) to verify 20–45 μm distribution. BET surface area measurement to validate 0.2–0.6 m²/g range. Moisture content testing to ensure compliance with <1 wt.% specification. A certificate of analysis (CoA) is provided with each order, documenting batch-specific properties.