Lithium air battery

An organic electrolytic solution is used on the negative electrode (metal lithium) side, and an aqueous electrolytic solution is used on the positive electrode (air) side. A solid electrolyte membrane through which only lithium ions pass is disposed between the two electrolytes, separating the two. This prevents electrolyte mixing and promotes battery reaction.

An organic electrolyte containing a lithium salt is used in combination with the electrolyte solution for a negative electrode. Although organic solvents cannot be discarded, they are limited in their use. The aqueous electrolyte solution for the positive electrode is an alkali water-soluble gel, and is combined with a positive electrode formed of a refined carbon and a suboxide catalyst.

In a lithium-air battery, LiOH (lithium hydroxide) which is easily dissolved in an aqueous electrolyte is formed due to a discharge reaction which is not solid Li2O. Lithium oxide does not cause work to stop after the air electrode is deposited. Water, nitrogen, and the like also do not pass through the partition walls of the solid electrolyte, so there is no risk of reaction with the lithium metal of the negative electrode. Moreover, at the time of charging, if a positive electrode for charging is disposed, corrosion and aging of the conductive air electrode can be prevented.