Electrolyte sheet and manufacturing method of secondary battery
An aspect of the present invention provides a manufacturing method for an electrolyte sheet, the manufacturing method including a step of molding a composition containing a polymer, Li[TFSI], oxide particles, and a dispersion medium into a sheet shape and volatilizing the dispersion medium at 100° C. or higher.
1 . A manufacturing method for an electrolyte sheet, the manufacturing method comprising:
a step of molding a composition containing a polymer, Li [TFSI], oxide particles, and a dispersion medium into a sheet shape and then volatilizing the dispersion medium at a temperature greater than 105° C. and less than 150° C.
2 . The manufacturing method according to claim 1 , wherein the composition further contains at least one solvent selected from the group consisting of an ionic liquid and a glyme represented by the following Formula (1):
R 1 O—(CH 2 CH 2 O) k —R 2 (1)
wherein in Formula (1), R 1 and R 2 each independently represent an alkyl group having 1 to 4 carbon atoms; and k represents an integer of 3 to 6.
3 . A manufacturing method for a secondary battery, the manufacturing method comprising:
a step of forming a positive electrode mixture layer on a positive electrode current collector to obtain a positive electrode;
a step of forming a negative electrode mixture layer on a negative electrode current collector to obtain a negative electrode; and
a step of disposing an electrolyte sheet obtainable by the manufacturing method according to claim 1 , between the positive electrode and the negative electrode.
4 . A manufacturing method for a secondary battery, the manufacturing method comprising:
a step of forming a positive electrode mixture layer on a positive electrode current collector to obtain a positive electrode;
a step of forming a negative electrode mixture layer on a negative electrode current collector to obtain a negative electrode; and
a step of disposing an electrolyte sheet obtainable by the manufacturing method according to claim 2 , between the positive electrode and the negative electrode.