Patent ID: 6322599
Filing Date: 2001-11-27
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
A method of fabricating a lithium ion secondary battery, comprising the steps of:preparing a positive electrode by forming a positive electrode active material layer on a positive electrode collector;preparing a negative electrode by forming a negative electrode active material layer on a negative electrode collector;preparing an adhesive resin solution, by dispersing a fluoride resin or a mixture containing a fluoride resin as the main component in N-methylpyrrolidone;coating said adhesive resin solution to at least one of a surface of the positive electrode active material layer and a respective facing surface of a separator and to at least one of a surface of the negative electrode active material layer and a respective facing surface of the separator;fitting the positive electrode active material layer and the negative electrode active material layer upon respective surfaces of said separator;evaporating said N-methylpyrrolidone from said adhesive resin solution to form porous adhesive resin layers to produce through holes that communicate said positive electrode material layer with said separator and that communicate the said negative electrode material layer with the said separator, and so as to bond the positive electrode active material layer and the negative electrode active material layer upon respective surfaces of said separator to form a laminated body; andsupplying a lithium ion-containing electrolytic solution to said laminated body.