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Continuous process to produce lithium-polymer batteries

United States Patent

*** EXPIRED ***
May 12, 1998
View the Complete Patent at the US Patent & Trademark Office
Solid polymer electrolytes are extruded with active electrode material in a continuous, one-step process to form composite electrolyte-electrodes ready for assembly into battery cells. The composite electrolyte-electrode sheets are extruded onto current collectors to form electrodes. The composite electrodes, as extruded, are electronically and ionically conductive. The composite electrodes can be overcoated with a solid polymer electrolyte, which acts as a separator upon battery assembly. The interface between the solid polymer electrolyte composite electrodes and the solid polymer electrolyte separator has low resistance.
Chern; Terry Song-Hsing (Midlothian, VA), Keller; David Gerard (Baltimore, MD), MacFadden; Kenneth Orville (Highland, MD)
W. R. Grace & Co. -Conn. (New York, NY)
08/ 653,172
May 24, 1996
This invention was made with Government support under Contract DE-FC02-91CE50336 awarded by the United States Department of Energy. The Government has certain rights in this invention.