Description

Key Properties & Advantages
BCZYYb’s performance is defined by its proton-conducting perovskite structure and optimized doping strategy:

Controlled Particle Size (0.2–0.6 μm): Enables dense sintering at moderate temperatures (1350–1500°C), forming gas-tight electrolyte layers with uniform microstructure—essential for minimizing hydrogen crossover in PCFCs and separation membranes.
High Specific Surface Area (10–15 m²/g): Enhances sinterability and promotes strong adhesion to electrode layers (e.g., Ni-based anodes, LSCF cathodes), while providing abundant sites for proton conduction at the electrolyte-electrode interface.
Low Moisture Content (<1 wt.%): Prevents agglomeration during storage and processing, ensuring uniform dispersion in slurries, tapes, or green bodies—critical for consistent proton conductivity in thin films. High Proton Conductivity: Y³⁺ and Yb³⁺ doping on Ce⁴⁺/Zr⁴⁺ sites creates oxygen vacancies, which incorporate H₂O to form mobile protons (OH⁻), enabling conductivity (10⁻¹–10⁰ S/cm at 500°C) in humid environments—outperforming oxide-ion conductors in low-temperature hydrogen systems. Chemical Stability: Zr⁴⁺ doping improves resistance to CO₂ and H₂O (common in fuel cell environments), reducing carbonate formation and extending device lifetime compared to ceria-based proton conductors. Perovskite Structural Stability: Retains its ABO₃ structure in both reducing (anode) and oxidizing (cathode) atmospheres, ensuring long-term durability in PCFC operation. Core Applications Protonic Ceramic Fuel Cells (PCFCs) BCZYYb is a premier electrolyte for PCFCs, where low-temperature hydrogen oxidation drives efficiency: PCFC Electrolytes: Conducts protons from anode to cathode, enabling electrochemical energy conversion at 400–600°C—lower than SOFCs, reducing material costs and improving stack durability. Hydrogen-Fueled Systems: Ideal for hydrogen or syngas-fueled PCFCs, leveraging its high proton conductivity in humid hydrogen environments to generate clean electricity with high efficiency. Hydrogen Separation & Purification Hydrogen Membranes: Enables selective proton transport through dense membranes, purifying hydrogen from mixed gases (e.g., syngas, industrial exhausts) at moderate temperatures—critical for hydrogen economy infrastructure. Electrochemical Pumps: Facilitates hydrogen compression or concentration via electrochemical proton transport, supporting high-purity hydrogen storage and delivery. Electrochemical Sensors Hydrogen Sensors: Used in high-precision H₂ sensors for industrial safety and fuel cell monitoring, leveraging its sensitivity to hydrogen partial pressure and proton conductivity. Technical Specifications: Chemical Composition is BaCe₀.₇Zr₀.₁Y₀.₁Yb₀.₁O₃₋δ (perovskite proton conductor); Particle Size (D50) is 0.2–0.6 μm (laser diffraction); Specific Surface Area is 10–15 m²/g (BET method); Moisture Content is <1 wt.% (Karl Fischer titration); Crystal Structure is Cubic/tetragonal perovskite; Color is White to off-white crystalline powder. Quality Assurance Each batch of BCZYYb undergoes rigorous testing to ensure reliability: X-ray diffraction (XRD) to confirm perovskite phase purity and crystal structure. Particle size analysis (laser diffraction) to verify 0.2–0.6 μm distribution. BET surface area measurement to validate 10–15 m²/g range. Moisture content testing to ensure compliance with <1 wt.% specification. Proton conductivity testing (optional) under humid conditions to confirm performance at 400–600°C.