FIELD: physics.
SUBSTANCE: invention relates to a liquid electrolyte, a method of producing a liquid electrolyte, lithium-ion batteries containing such an electrolyte. According to the invention, the liquid electrolyte for lithium-ion accumulator batteries contains a lithium salt of sulphonimide and water, wherein the liquid electrolyte contains at least one kind of an anion selected from a group consisting of an orthophosphoric ion, a pyrophosphate ion, an anion obtained from dissociation of phosphorous acid or a salt thereof and an anion obtained by dissociating phosphinic acid or a salt thereof.
EFFECT: technical result is higher potential of side of oxidation in window of potentials.
10 cl, 3 dwg, 30 ex, 2 tbl
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