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US 11,081,730 B2Granted
Non-aqueous electrolyte solution
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsNaoki Matsuoka, Hirokazu Kamine, Masaki Takahashi, Kazuyuki Fujiwara
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Abstract
To provide a non-aqueous electrolyte solution, a non-aqueous secondary battery, a cell pack, and a hybrid power system, capable of improving desired battery performance in an acetonitrile electrolyte solution, the non-aqueous electrolyte solution contains a non-aqueous solvent, PO2F2 anions, and cyclic acid anhydride.
Claims5
A non-aqueous electrolyte solution comprising a non-aqueous solvent, imide salt, Li ions and PF6 anions,
- wherein the non-aqueous solvent includes acetonitrile,
- wherein the PF6 anions are obtained by dissociating LiPF6,
- wherein a molar mixing ratio of PF6 anions relative to the acetonitrile is 0.01 or higher and lower than 0.08,
- wherein the imide salt is contained in a molarity relationship of LiPF6≤imide salt, and
- wherein an activation energy of the non-aqueous electrolyte solution in ion conduction is 15 kJ/mol or lower at a temperature of −20 to 0° C.
2 more elements
Dependencies are inferred from the claim text.