Lithium nitrate is widely used in the production of lithium-based batteries, particularly in molten carbonate fuel cells where it acts as an electrolyte component. It serves as a source of lithium ions in electrochemical applications due to its high ionic conductivity when dissolved or melted. The compound is also employed in heat transfer systems and as a corrosion inhibitor in cooling towers. In ceramics and glass manufacturing, it helps reduce firing temperatures and improve thermal shock resistance. Additionally, lithium nitrate is used in some concrete admixtures to accelerate setting times and enhance durability. Its ability to absorb moisture makes it useful in air treatment systems for humidity control.