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Fabrication methods for low impedance lithium polymer electrodes

United States Patent

*** EXPIRED ***
December 16, 1997
View the Complete Patent at the US Patent & Trademark Office
A process for fabricating an electrolyte-electrode composite suitable for high energy alkali metal battery that includes mixing composite electrode materials with excess liquid, such as ethylene carbonate or propylene carbonate, to produce an initial formulation, and forming a shaped electrode therefrom. The excess liquid is then removed from the electrode to compact the electrode composite which can be further compacted by compression. The resulting electrode exhibits at least a 75% lower resistance.
Chern; Terry Song-Hsing (Midlothian, VA), MacFadden; Kenneth Orville (Highland, MD), Johnson; Steven Lloyd (Arbutus, MD)
W. R. Grace & Co.-Conn. (New York, NY)
08/ 653,170
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.