Praseodymium-based cathode powders are a type of material that can be used for solid oxide fuel cells (SOFCs) and oxygen storage, which are devices that convert chemical energy into electrical energy. Praseodymium-based cathode powders have some advantages over other cathode materials, such as high oxygen storage capacity, mixed ionic electronic conductivity, and compatibility with different electrolytes.

Lanthanum cathode powders are materials that can be used in various electrochemical applications, such as solid oxide fuel cells (SOFCs), solid oxide electrolysis cells (SOECs), oxygen separation membranes, mixed conducting membranes, and gas sensors.