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US 10,707,531 B1Granted
All-inorganic solvents for electrolytes
AssigneeNew Dominion Enterprises Inc.
InventorsMason K. Harrup, Jay Fraser
Life of this patent
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Abstract
An all-inorganic electrolyte formulation for use in a lithium ion battery system comprising at least one of each a phosphoranimine, a phosphazene, a monomeric organophosphate and a supporting lithium salt. The electrolyte preferably has a melting point below 0° C., and a vapor pressure of combustible components at 60.6° C. sufficiently low to not produce a combustible mixture in air, e.g., less than 40 mmHg at 30° C. A solid electrolyte interface layer formed by the electrolyte with an electrode is preferably thermally stable ≥80° C.
Claims10
An electrolyte solvent formulation comprising:
- a phosphoranimine;
- a phosphazene present in an amount of between 3 and 30% by volume;
- and
- optionally a monomeric phosphorus compound;
- wherein a portion of the electrolyte solvent formulation is labile at a voltage of 5V and the portion is effective to scavenge free radicals and suppress free radical propagation;
- being a liquid between at least 0° C. and 60.6° C., and having a vapor pressure of combustible components at 60.6° C. sufficiently low to not produce a combustible mixture in air.
3 more elements
Dependencies are inferred from the claim text.