Method for producing composition for forming positive electrode material mixture layer and method for producing lithium ion secondary battery
AssigneeHitachi, Ltd.
InventorHiroyuki MITSUHASHI
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Abstract
A method for producing a composition for forming a positive electrode material mixture layer of the present invention either includes the steps of; (1) mixing a positive electrode active material and phosphoric acid or a phosphate compound to form a mixture; and mixing the mixture and the binder to form a composition, or includes the steps of: (2) forming a mixture containing a positive electrode active material and a binder, and mixing the mixture and phosphoric acid or a phosphate compound to form a composition, wherein the formed composition for forming a positive electrode material mixture layer contains the solvent and has a viscosity adjusted to 15000 mPa·s or less.
Claims8
A method for producing a composition for forming a positive electrode material mixture layer that contains at least a positive electrode active material, a binder, and a solvent, the method comprising the steps of:
- mixing the positive electrode active material including a lithium-containing composite oxide and phosphoric acid or a phosphate compound to form a mixture;
- and
- mixing the mixture and the binder to form a composition,
- wherein the formed composition contains the solvent and has a viscosity adjusted to 15000 mPa·s or less.
A method for producing a composition for forming a positive electrode material mixture layer that contains at least a positive electrode active material, a binder, and a solvent, the method comprising the steps of:
- forming a mixture containing the positive electrode active material including a lithium-containing composite oxide and the binder;
- and
- mixing the mixture and phosphoric acid or a phosphate compound to form a composition,
- wherein the formed composition contains the solvent and has a viscosity adjusted to 15000 mPa·s or less.
Dependencies are inferred from the claim text.