It is used in spaceships to absorb carbon dioxide. It reacts with carbon dioxide to make lithium carbonate. This prevents people from suffocating in a spaceship. Lithium hydroxide is used to make lithium greases. They are resistant to water and can be used in high or low temperatures. It is used to transfer heat. It can be used in electrolytes. It is also used to prevent corrosion in some nuclear reactors. It can be used to glaze ceramics and make cement.