UsageLithium hydroxide can be used as developing agent and lubricating oil for spectral analysis. The additive of alkaline battery electrolyte can increase the electric capacity by 12% to 15% and increase the service life by 2 to 3 times.It can be used as an absorbent for carbon dioxide and can purify the air in submarines.The chemical equation is: 2LiOH(s)+CO2(g)=Li2CO3(s)+H2O(l).It is used to make lithium salt and lithium-based grease, electrolyte of alkaline battery, absorption liquid of lithium bromide refrigerator, etc.; used in petroleum, chemical industry, light industry, nuclear industry, etc. When used in alkaline batteries, the aluminum content is not more than 0.06%, and the lead content is not more than 0.01%. It is used as an analytical reagent, a photographic developer, and also in the manufacture of lithium; it is used as a raw material for the preparation of lithium compounds. It can also be used in metallurgy, petroleum, glass, ceramics and other industries.