This product is developed for solid oxide fuel cell (SOFC) applications, where it serves as a high-performance solid electrolyte material. The 3 mol% yttria-stabilized zirconia (3YSZ) combines excellent ionic conductivity with robust mechanical and thermal stability, making it suitable for operation at elevated temperatures typical of SOFC environments. It exhibits a fine-grained microstructure that supports dense, crack-free electrolyte layers when sintered, contributing to reliable cell performance and long-term durability. Commonly used in the fabrication of anode-supported or electrolyte-supported fuel cells, this material is also relevant for oxygen sensors and other electrochemical devices requiring oxygen ion conduction. The powder is offered in three laboratory-scale quantities (100 g, 500 g, and 1000 g) to accommodate research and small-scale development needs.