Non-Aqueous Electrolyte Solution, Non-Aqueous Secondary Battery, Cell Pack, and Hybrid Power System
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsNaoki Matsuoka, Hirokazu Kamine, Masaki Takahashi, Kazuyuki Fujiwara
Life of this patent
Estimating the term…
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.
Claims47
A non-aqueous electrolyte solution comprising a non-aqueous solvent, PO2F2 anions, and cyclic acid anhydride.
A non-aqueous electrolyte solution comprising a non-aqueous solvent and lithium salt, wherein activation energy in ion conduction is 15 kJ/mol or lower at a temperature of −20 to 0° C.
A non-aqueous secondary battery comprising:
- a positive electrode having a positive-electrode active material layer formed on one surface or both surfaces of a current collector;
- a negative electrode having a negative-electrode active material layer formed on one surface or both surfaces of a current collector;
- and
- a non-aqueous electrolyte solution,
- wherein the non-aqueous electrolyte solution contains acetonitrile and LiPO2F2, and
- a value obtained by dividing a bulk resistance at a temperature of −30° C. by an internal resistance value in measurement of electrochemical impedance spectroscopy for the non-aqueous secondary battery is 0.05 to 0.7.
A non-aqueous secondary battery, comprising:
- a positive electrode having a positive-electrode active material layer formed on one surface or both surfaces of a current collector;
- a negative electrode having a negative-electrode active material layer formed on one surface or both surfaces of a current collector;
- and
- a non-aqueous electrolyte solution,
- wherein the negative-electrode active material layer contains at least one compound selected from a group consisting of imide salt and (SO4)2−,
- the imide salt is at least one selected from a group consisting of lithium salt and onium salt, and
- a bulk resistance at a temperature of 25° C. in measurement of electrochemical impedance spectroscopy for the non-aqueous secondary battery is 0.025 ohm or smaller.
A non-aqueous secondary battery comprising:
- a positive electrode having a positive-electrode active material layer formed on one surface or both surfaces of a current collector;
- a negative electrode having a negative-electrode active material layer formed on one surface or both surfaces of a current collector;
- and
- a non-aqueous electrolyte solution,
- wherein the negative-electrode active material layer contains at least one compound selected from a group consisting of imide salt and (SO4)2−,
- the imide salt is at least one selected from a group consisting of lithium salt and onium salt, and
- a bulk resistance at a temperature of −30° C. in measurement of electrochemical impedance spectroscopy for the non-aqueous secondary battery is 0.07 ohm or smaller.
Dependencies are inferred from the claim text.