Patent ID: 11916238
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 6:
7. A method for manufacturing the electrode as defined in claim 1, comprising:
preparing a slurry for a lower layer comprising the first active material, the first non-rubbery binder, and a first dispersion medium, and free from the rubbery binder, and preparing a slurry for an upper layer comprising the second active material, the second non-rubbery binder, the rubbery binder, and a second dispersion medium;
coating the slurry for the lower layer on one surface of the current collector, and coating the slurry for the upper layer on the slurry for a lower layer, at the same time or after a predetermined time interval; and
drying the coated slurry for the lower layer and the slurry for an upper layer at the same time to form an active material layer,
wherein the rubbery binder is the hydrogenated nitrile butadiene rubber (H-NBR),
each of the first non-rubbery binder and the second non-rubbery binder comprises the polyvinylidene fluoride (PVDF)-based polymer, and
the weight ratio of the second non-rubbery binder to the rubbery binder in the slurry for an upper layer is 1:0.03 to 1:0.07.