Method for Producing Non-Aqueous Alkali Metal Electricity Storage Element

2:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 1, wherein the C rate of the constant current charge is 1 to 30 times as large as the electric discharging capacity (Ah) of the non-aqueous alkali metal electricity storage element after the completion step.

3:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 1, wherein the voltage value of the constant voltage charge is 4.40 V or more and 4.80 V or less.

4:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 1, wherein time spent for the constant voltage charge is 0.25 hours or more and 24 hours or less.

(canceled)

6:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 1, wherein the pressurization step is carried out by using a pressurizing jig, and the heating step is carried out by using a thermostatic bath.

(canceled)

8:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 1, wherein the solution injection step is carried out by adjusting an internal pressure of the casing to −5 kPa to −101.32 kPa based on the atmospheric pressure.

9-10. (canceled)

11:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 8, wherein a temperature of the non-aqueous electrolytic solution is 15° C. to 45° C. in the solution injection step.

12:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 8, wherein a pressure of 0.05 kgf/cm2 or more to 500 kgf/cm2 or less is applied to the casing from outside thereof before the solution injection step or in the solution injection step.

13:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 8, comprising after the solution injection step,
• (a1) a re-depressurization step of adjusting an internal pressure of the casing in an opened state to −50 kPa to −100.00 kPa based on the atmospheric pressure, and
• (a2) a restoration step of returning an internal pressure of the casing in an opened state to the atmospheric pressure.

(canceled)

17:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 16, wherein heating the non-aqueous alkali metal electricity storage element precursor to a temperature of 35° C. or higher and 85° C. or lower in the charge/discharge cycle step.

18-22. (canceled)

23:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 16, wherein the non-aqueous alkali metal electricity storage element precursor is preliminarily pressurized from outside at a pressure of 0.1 kgf/cm2 or more to 1,000 kgf/cm2 or less in the charge/discharge cycle step.

24:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 16, wherein when charge and discharge are carried out as one cycle, the number of cycles is 1 or more and 10 or less in the chare/discharge step.

(canceled)

26:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 1, comprising an elevated temperature aging step of heating the non-aqueous alkali metal electricity storage element precursor, wherein the elevated temperature aging step comprises:
• a high voltage storage step of adjusting a voltage of the non-aqueous alkali metal electricity storage element precursor to 4.03 V or more and 5.0 V or less, and then storing the non-aqueous alkali metal electricity storage element precursor at a temperature of 45° C. or higher and 100° C. or lower.

27-30. (canceled)

31:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 26, wherein
• the elevated temperature aging step further comprises
• a low voltage storage step of adjusting a voltage of the non-aqueous alkali metal electricity storage element precursor to 1.5 V or more and 2.8 V or less, and then storing the non-aqueous alkali metal electricity storage element precursor at a temperature of 45° C. or higher and 100° C. or lower.

32-35. (canceled)

36:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 26, wherein the non-aqueous alkali metal electricity storage element precursor is preliminarily pressurized from outside at a pressure of 0.1 kgf/cm2 or more and 1,000 kgf/cm2 or less in the elevated temperature aging step.

38:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 37, wherein
• the drying step is carried out by heating the positive electrode precursor under reduced pressure, a temperature of the heating under reduced pressure is 50° C. or higher and 200° C. or lower, and
• the heating time is 1 hour or longer and 24 hours or shorter.

39:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 37, wherein
• the drying step is carried out by heating the positive electrode precursor under reduced pressure, and an atmospheric pressure in the heating under reduced pressure is 10−5 Pa or higher and 1,000 Pa or lower.

40:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 37, wherein
• the drying step is carried out by infrared heating, a temperature of the infrared heating is 80° C. or higher and 200° C. or lower, and
• the heating time is 1 minute or longer and 5 minutes or shorter.

41:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 37, wherein
• the drying step is carried out by infrared heating, and
• further comprising a winding step of winding up the positive electrode precursor after the infrared heating.

(canceled)

43:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 37, wherein the solvent comprises water, and the drying step is carried out so that an amount of the solvent in the positive electrode active material layer is reduced to 7.0% by weight or less based on a total weight of the positive electrode active material layer.

45:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 44, wherein
• a temperature inside the drying furnace is 100° C. or higher and 300° C. or lower, and
• a time for the heating is 1 minute or longer and 5 minutes or shorter.

46:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 44, wherein the drying furnace has an air flow therein for supplying and exhausting a gas comprising nitrogen as a main component, and a velocity of the air flow is 10 cm3/min or more and 1000 cm3/min or less.

47:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 44, wherein an oxygen concentration in the drying furnace is less than 1,500 ppm.

(canceled)

49:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 44, wherein the solvent comprises an organic solvent, and the drying step is carried out so that an amount of the solvent in the positive electrode active material layer is reduced to 0.1% by weight or more and 10% by weight or less based on a total weight of the positive electrode active material layer.

50:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 1, wherein the non-aqueous electrolytic solution comprises a non-aqueous solvent and an alkali metal salt.

51:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 1, wherein the alkali metal compound is at least one carbonate of an alkali metal selected from the group consisting of lithium carbonate, sodium carbonate and potassium carbonate;
• or a lithium hydroxide or a lithium oxide.

(canceled)

54:

• The method for producing a non-aqueous alkali metal electricity storage element according to claim 1, wherein the positive electrode current collector is a non-porous aluminum foil.

(canceled)