Patent ID: 6653015
Filing Date: 2003-11-25
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
A lithium ion secondary battery, prepared by a method comprising:mixing a positive electrode active material powder with a particulate polymer soluble in a nonaqueous electrolytic solution, thereby forming a positive electrode active material mixture; mixing a negative electrode active material powder with a particulate polymer soluble in a nonaqueous electrolytic solution, thereby forming a negative electrode active material mixture; coating the positive electrode active material mixture onto a metal substrate, thereby forming a positive electrode comprising the positive electrode active material powder and the particulate polymer soluble in a nonaqueous electrolytic solution; coating the negative electrode active material mixture onto a metal substrate, thereby forming a negative electrode comprising the negative electrode active material powder and the particulate polymer soluble in a nonaqueous electrolytic solution; assembling the positive electrode and the negative electrode into an electrode laminate; and injecting the electrolytic solution into the electrode laminate.