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US 10,763,547 B1Granted
Electrolyte and a battery with said electrolyte
AssigneeHigh Tech Battery Inc.
InventorKuei Yung Wang
Life of this patent
Estimating the term…
Abstract
An electrolyte for a lithium-ion battery, and a battery incorporating the electrolyte. The electrolyte includes a lithium salt, a non-aqueous organic solvent which includes a carbonate-based solvent, a flame retardant, a film former, and a stabilizing medium. The flame retardant includes PYR1RPF6 (N-Methyl-N-alkylpyrrolidinium Hexafluorophosphate Salt).
Claims27
An electrolyte for a lithium-ion battery comprising:
- a lithium salt, and
- a non-aqueous organic solvent which includes a carbonate-based solvent, a flame retardant, a film former, and a stabilizing medium,
- wherein
- the flame retardant comprises an N-methyl-N-alkylpyrrolidinium hexafluorophosphate salt in an amount of 1 to 15 wt. % of the electrolyte,
- the stabilizing medium comprises a first stabilizer, a second stabilizer, and a third stabilizer, and
- the third stabilizer is selected from the group consisting of hexaphenoxycyclotriphosphazene (HPCP) in an amount between 0.5 to 5 wt. % of the electrolyte and 10-(2,5-dihydroxyphenyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO-HO) in an amount less than or equal to 1.5 wt. % of the electrolyte.
3 more elements
An electrolyte for a lithium-ion battery comprising:
- a lithium salt comprising LiPF6, a non-aqueous organic solvent which includes a carbonate-based organic solvent, a flame retardant, a film former, and a stabilizing medium,
- wherein
- the carbonate-based organic solvent is selected from the group consisting of ethylene carbonate (EC), ethyl methyl carbonate (EMC), diethyl carbonate (DEC), Propylene carbonate (PC), dimethyl carbonate (DMC), and mixtures thereof;
- the flame retardant comprises PYR16PF6;
- the film former is selected from the group consisting of vinylene carbonate (VC) and fluoroethylene carbonate (FEC);
- the stabilizing medium comprises a first stabilizer, a second stabilizer, and a third stabilizer;
- the first stabilizer is selected from the group consisting of bis(oxalateborate) (BOB−), and difluoro(oxalate)borate (ODFB−), and
- the second stabilizer is selected from the group consisting of
- (i) PYR14TFSI at a ratio of PYR16PF6:first stabilizer:PYR14TFSI being 1:0.5:1 wt. % of the electrolyte,
- (ii) PYR13TFSI at a ratio of PYR16PF6:first stabilizer:PYR13TFSI being 1:0.5:1 wt. % of the electrolyte, and
- (iii) PYR13TFSI at a ratio of PYR16PF6:first stabilizer:PYR13TFSI being 10:1:4 wt. % of the electrolyte.
8 more elements
Dependencies are inferred from the claim text.