Lithium zirconate is primarily used as a carbon dioxide absorbent in closed environments such as spacecraft, submarines, and rebreathers. It effectively captures CO₂ from air at elevated temperatures, making it suitable for regenerative life support systems. The material can be regenerated after use by heating, allowing repeated cycles of absorption and release, which enhances its efficiency and cost-effectiveness in long-duration applications. It is also explored in solid oxide fuel cells and oxygen separation membranes due to its stability and ionic conductivity at high temperatures. Additionally, lithium zirconate serves as a precursor in the synthesis of advanced ceramic materials and is investigated for use in lithium-ion battery components.