BATTERY ELECTROLYTE AND METHOD FOR PRODUCING SAME, AND BATTERY COMPRISING ELECTROLYTE

An object of the present invention is to provide a liquid electrolyte for batteries, which has excellent ion conductivity, a method for producing the liquid electrolyte and a battery comprising the liquid electrolyte. Disclosed is a liquid electrolyte for batteries, comprising a mesoionic compound represented by the following general formula (1): wherein R 1 and R 2 are each independently an alkyl group having 1 to 3 carbon atoms.