Patent ID: 6582545
Filing Date: 2003-06-24
Classification: H01M,Y02E,Y10T

Abstract:
A method for preparing an electrode, comprising the steps of:a) providing an electrode active material; b) mixing the electrode active material with a fluoro-polymeric material in a solvent to form an electrode admixture paste; c) briquetting the electrode admixture paste into pellet-shaped structures; d) calendering the pellet-shaped structures into a first sheet structure having a first thickness by subjecting them to at least one first calendering mill; e) calendering the first sheet structure into an electrode active structure having a second thickness less than the first thickness by contacting the first sheet structure in a second direction with at least one second calendering mill to thereby fibrillate the fluoro-polymeric material in other than a first direction used to form the first sheet structure from the pellet-shaped structures by the first calendering mill; and f) contacting the electrode active structure to at least one of a first and second major surfaces of a conductive substrate.