| abstract |
A lithium air battery cell having an electrolyte composition comprising LiPO 2 F 2 is described. The electrolyte composition comprises an electrolyte solvent, such as one or more non-fluorinated solvents such as ethylene carbonate, dialkyl carbonate or propylene carbonate, and / or one or more fluorinated organic solvents such as fluoroethylene carbonate, Cis-difluoroethylene carbonate, trans-difluoroethylene carbonate, 4,4-difluoroethylene carbonate, trifluoroethylene carbonate, tetrafluoroethylene carbonate, 4-fluoro-4-methyl-1,3-dioxolan-2-one, 4- Fluoro-4-ethyl-1,3-dioxolan-2-one, 2,2,2-trifluoroethyl-methyl carbonate, and 2,2,2-trifluoroethyl-fluoromethyl carbonate are preferred. The solvent may further contain other additives. Also described is a vehicle battery, in particular an automobile battery, comprising a plurality of lithium-air battery cells of the present invention. A battery can be used to provide electrical energy to a consumer of current, such as an electric motor that drives a vehicle. |