Skip to Content
Find More Like This
Return to Search

Extrusion of electrode material by liquid injection into extruder barrel

United States Patent

5,725,822
March 10, 1998
View the Complete Patent at the US Patent & Trademark Office
An electrode sheet product is formed using an extruder having a feed throat and a downstream section by separately mixing an active electrode material and a solid polymer electrolyte composition that contains lithium salt. The active electrode material is fed into the feed throat of the extruder, while a portion of at least one fluid component of the solid polymer electrolyte composition is introduced to the downstream section. The active electrode material and the solid polymer electrolyte composition are compounded in a downstream end of the extruder. The extruded sheets, adhered to current collectors, can be formed into battery cells.
Keller; David Gerard (Baltimore, MD), Giovannoni; Richard Thomas (Reisterstown, MD), MacFadden; Kenneth Orville (Highland, MD)
W. R. Grace & Co.-Conn. (New York, NY)
08/ 653,174
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.