Patent ID: 8518577

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 that includes a porous layer having a ceramic component, a third binder, and a polyolefin resin layer, the ceramic component and the polyolefin resin layer are interposed between the first and second electrodes and 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 coated on the second electrode, and wherein the second binder and the third binder is 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.