Patent ID: 8795871

Claim:
An electrode assembly for a battery, the assembly comprising: a first electrode comprising a first electrode active material and a first binder, wherein the first electrode further comprises 0.1 to 30 wt % of the first binder based on the total weight of the first electrode active material; a second electrode comprising a second electrode active material and a second binder, wherein the second electrode further comprises 0.1 to 30 wt % of the second binder based on the total weight of the second electrode active material; and a separator between the first and second electrodes, the separator including a porous layer and a polyolefin resin layer, the porous layer having a ceramic component and a third binder, wherein the porous layer has a thickness of approximately 4 to 6 μm and the polyolefin resin layer has a thickness of approximately 12 to 16 μm, wherein the porous layer is formed on the second electrode, and wherein the second binder and the third binder are either an aqueous binder or an organic binder and when the second binder is an aqueous binder, the third binder is an organic binder, and when the second binder is an organic binder, the third binder is an aqueous binder.