Sulfone containing organic electrolyte for lithium-air battery having good energy efficiency and oxygen efficiency and lithium-air battery using the same

摘要

The present invention relates to an electrolyte for a lithium-air battery containing a sulfone solvent having desirable energy efficiency and desirable oxygen efficiency, and a lithium-air battery using the same. Provided is the electrolyte for a lithium-air battery, the electrolyte comprising: a sulfone solvent which is a solid at room temperature because the melting point thereof is higher than 25C; lithium nitrate (LiNO_3); and an organic mixed solvent which is an amide solvent, a sulfoxide solvent, a sulfone solvent, an ether solvent, a nitrile solvent, or a combination thereof. The lithium-air battery according to the present invention has desirable energy efficiency and desirable oxygen efficiency due to the desirable oxidation stability and low volatility of the sulfone solvent and the lithium nitrate and the organic mixed solvent, thereby providing advantages in which the performance of the lithium-air battery is desirable and a cycle life is prolonged.