Cyclic phosphonamides as an electrolyte component for lithium-ion batteries
AssigneeWacker Chemie AG
InventorsDaniel BRAEUNLING, Frank DEUBEL
Life of this patent
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Abstract
An electrolyte suitable for use in lithium ion batteries contains 100 parts by weight of aprotic solvent, 1 to 50 parts by weight of lithium-containing conducting salt, 4 to 50 parts by weight of vinylene carbonate, and cyclic phosphonamide of the general formula 1 in which R1, R2, R3 are each hydrocarbyl which is unsubstituted or substituted by fluoro, chloro or silyl groups and which has 1-20 carbon atoms, where two or three of the radicals R1, R2, R3 may be joined to one another, and n has a value of 0, 1, 2, 3, 4 or 5. The electrolyte is used in a lithium-ion battery which comprises a cathode, an anode, a separator, and the electrolyte.
Claims14
-10. (canceled)
An electrolyte, comprising:
- 100 parts by weight of at least one aprotic solvent,
- 1 to 50 parts by weight of at least one lithium-containing conducting salt,
- 4 to 50 parts by weight of vinylene carbonate, and
- at least one cyclic phosphonamide of the formula 1
- in which
- R1, R2, R3 are each independently hydrocarbyl radicals which are unsubstituted or substituted by fluoro, chloro or silyl groups and which have 1-20 carbon atoms, where two or three of the radicals R1, R2, R3 may be joined to one another, and
- n has a value of 0, 1, 2, 3, 4 or 5.
Dependencies are inferred from the claim text.