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

Claim 0:
1. An electrode comprising:
a current collector; and
an electrode active material layer disposed on at least one surface of the current collector,
wherein the electrode active material layer comprises:
a lower layer region facing the current collector, and
an upper layer region facing the lower layer region and extended to a surface of the electrode active material layer,

the lower layer region comprises a first active material and a first non-rubbery binder, and is free from a rubbery binder,
the upper layer region comprises a second active material, a second non-rubbery binder, and the rubbery binder,
the rubbery binder is a hydrogenated nitrile butadiene rubber (H-NBR),
each of the first non-rubbery binder and the second non-rubbery binder comprises a polyvinylidene fluoride (PVDF)-based polymer, and
a weight ratio of the second non-rubbery binder to the rubbery binder in the upper layer region is 1:0.03 to 1:0.07.