Abstract: A rechargeable lithium air battery comprises a non-aqueous electrolyte disposed between a spaced-apart pair of a lithium anode and an air cathode. The electrolyte includes including a lithium salt and an additive containing an alkylene group or a lithium salt and an organosilicon compound. The alkylene additive may be alkylene carbonate, alkylene siloxane, or a combination of alkylene carbonate and alkylene siloxane. The alkylene carbonate may be vinylene carbonate, butylene carbonate, or a combination of vinylene carbonate and butylene carbonate. The alkylene siloxane may be a polymerizable silane such as triacetoxyvinylsilane. In preferred embodiments, the organosilicon compound is a silane containing polyethyleneoxide side chain(s).

Abstract: An air lithium battery is provided having two equal halves (60, 69) that are joined together along a centerline. Each half includes a porous substrate (64), an oxygen cathode (67) having a non-volatile lithium ion conductive electrolyte cathode, a non-volatile electrolyte (66), and an anode (65). The electrolyte may include alternating layers of ion conductive glass or ceramic layer and ion conductive polymer layer.