Patent ID: 7670724

Claim:
A moisture-resistant lithium metal-air battery, comprising: a housing having an aperture to permit the passage of air; a pair of electrodes extending from the said housing; an air cathode interconnected with a one of said pair of electrodes; a metal foil anode being interconnected with another one of said pair of electrodes; a separator interposed between said air cathode and said metal foil anode; and a polymeric barrier layer surrounds said metal foil anode; a first wire-mesh layer is disposed adjacent said air cathode; a second wire-mesh layer is interposed between said metal foil anode and said polymeric barrier layer; said polymeric barrier layer, being composed of a mixture of alkali-hydroxide modified polyvinylidene fluoride, polyethylene oxide, and lithium hexafluorophosphate, allows a passage of lithium ions and oxygen ions therethrough to said metal foil anode; said alkali-hydroxide modified polyvinylidene fluoride being in a range of between about 75 percent by weight and about 85 percent by weight; said polyethylene oxide being in a range of between about 5 percent by weight and about 10 percent by weight; said lithium hexafluorophosphate being in a range of between about 10 percent by weight and about 15 percent by weight; and said passage of lithium ions and oxygen ions through said polymeric barrier layer to said metal foil anode causes a multitude of oxidation reactions and reduction reactions while substantially reducing unwanted contact between external moisture and said metal foil anode to generate electrical energy at an increased level of stability.