Patent ID: 9178201
Filing Date: 2015-11-03
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A jelly-roll type electrode assembly comprising: an anode, a cathode, and separators interposed between the anode and the cathode and having a greater length than width, wherein each of the separators is longer than the anode and the cathode and has a porous substrate and porous coating layers formed on both surfaces of the porous substrate and comprising a mixture of inorganic particles and a binder polymer, wherein a width of the porous coating layers is greater than widths of the anode and cathode, wherein the separator has uncoated portions where the porous substrate is not coated with the porous coating layer, wherein the uncoated portions are on an outermost surface of the electrode assembly where tape is to be adhered and on a part contacting a mandrel, and wherein the porous coating layers are formed only in areas where the separators are in contact with the anode and the cathode.