Patent ID: 6268087
Filing Date: 2001-07-31
Classification: H01M,Y02E,Y02P

Abstract:
A method for preparing a lithium ion polymer battery comprising:a) providing an activated composite anode byforming an anode film by casting a composite anode slurry comprising an anode active material, a conducting material, a binder, a plasticizer and a solvent;laminating said anode film on both sides of a copper grid or a copper extended metal to prepare a composite anode;extracting plasticizer from the composite anode by immersing in a solvent; andactivating the composite anode by immersing in an electrolyte solution to prepare an activated composite anode;(b) providing a polymer electrolyte film bycasting a polymer electrolyte slurry comprising a polymer matrix, a liquid electrolyte solution of a lithium salt and an aprotic solvent, a filler and a solvent, andremoving the solvent;(c) providing an activated composite cathode byforming a cathode film by casting a composite cathode slurry comprising a cathode active material, a conducting material, a binder, a plasticizer and a solvent;laminating said cathode film on both sides of an aluminum grid or an aluminum extended metal to prepare a composite site cathode;extracting plasticizer from the composite cathode by immersing in a solvent; andactivating the composite cathode by immersing in an electrolyte solution to prepare an activated composite cathode; and(d) laminating said activated composite anode, polymer electrolyte and activated composite cathode.