Patent ID: 7066971
Filing Date: 2006-06-27
Classification: H01M,Y02E,Y10T

Abstract:
1. A method of preparing a cathode/separator assembly of an electrochemical cell, wherein said cathode/separator assembly comprises a cathode active layer and as microporous separator layer, said method comprising the steps of: (a) coating a first protective coating layer on a temporary carrier substrate, wherein said first protective coating layer has a first surface in contact with said temporary carrier substrate and has a second surface on the side opposite from said temporary carrier substrate; (b) coating a microporous separator layer on said second surface of said first protective coating layer, wherein said separator layer has a first surface in contact with said second surface of first protective coating layer and has a second surface on the side opposite from said first protective coating layer; (c) coating a cathode active layer in a desired pattern on said second surface of said separator layer, wherein said cathode active layer has a first surface in contact with said second surface of said separator layer and has a second surface on the side opposite from said separator layer; and (d) removing said temporary carrier substrate from said first surface of said first protective coating layer to form said cathode/separator assembly.