Electrolyte solution for lithium air batteries, and lithium air battery

A purpose of the present invention is to provide an electrolyte solution for lithium air batteries, which has excellent chemical stability and high withstand voltage and is in a stable liquid state without undergoing coagulation or deposition of a salt over a wide temperature range. Another purpose of the present invention is to provide a lithium air battery which is produced using the electrolyte solution for lithium air batteries and has excellent long-term reliability and good charge/discharge cycle characteristics. The present invention is an electrolyte solution for lithium air batteries, which is characterized by containing a lithium salt and an organic solvent that contains a chain alkyl sulfone compound represented by formula (1). In formula (1), each of R1 and R2 independently represents a linear or branched chain alkyl group having 1-4 carbon atoms, and R1 and R2 may be the same as or different from each other.