BZY (BaZr0.8Y0.2O3-δ) Powder as Proton-Conducting Electrolyte for Low Temperature SOFC/SOEC, 50 g/bottle, CLTSOFECPCEBZY
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In the evolving landscape of Solid Oxide Fuel Cells (SOFC) and Electrolysis Cells (SOEC), BZY (Barium Zirconate Yttrate, also called Yttria-doped Barium Zirconate)—typically formulated as BaZr0.8Y0.2O(3-x), is the "chemical fortress" of proton-conducting electrolytes. While BZCY (which contains Cerium) is more conductive, BZY is often preferred for industrial applications because of its unparalleled chemical and mechanical stability, especially in environments containing high levels of CO2 or steam.
The primary reason to choose BZY over other proton conductors is its stability. (1) CO2 Resistance: Unlike Barium Cerate-based materials, BZY does not react with Carbon Dioxide to form Barium Carbonate (BaCO3). This makes it the only viable proton-conducting electrolyte for cells running on hydrocarbons (like methane) or in SOEC mode where CO2 co-electrolysis is performed. (2) Mechanical Integrity: BZY possesses superior mechanical strength and fracture toughness compared to Ceria-based electrolytes, which is critical for long-term stack durability.
BZY operates via the transport of protons (H+) through the oxygen vacancies created by Yttrium doping. (1) Protonic SOFC (PC-SOFC): Protons travel from the anode to the cathode and water forms at the cathode. This is a massive benefit because the fuel (hydrogen) remains pure and undiluted, leading to higher efficiency and easier fuel recycling. (2) Protonic SOEC (PC-SOEC): Steam is fed to the anode, where it is split into O2 and H+. Protons travel through the BZY to the cathode to form dry, pure H2 gas. This eliminates the need for expensive hydrogen drying stages required in traditional SOEC systems.
| Part Number |
CLTSOFECPCEBZY (C-LTSOFEC-PCE-BZY) |
| Purity |
≥99.5% |
| Chemical Formula |
BaZr0.8Y0.2O3-δ |
| Surface Area |
15-30 m2/g |
| Package Grade |
50 g/bottle (other grades, such as 100 g, and 500 g or larger can be supplied upon request) |
References:
- Y. Huang, et al., Performance study of proton conducting electrolytes based on BaZr1−xYxO3-δ for solid oxide electrolysis cell, I. J. Electrochem. Soc., 2023, 18, 100033.
- Y. Xing, et al., Designing High Interfacial Conduction beyond Bulk via Engineering the Semiconductor–Ionic Heterostructure CeO2−δ/BaZr0.8Y0.2O3 for Superior Proton Conductive Fuel Cell and Water Electrolysis Applications, ACS Appl. Energy Mater. 2022, 5, 12, 15373–15384.