Extrusion of electrode material by liquid injection into extruder barrel

Patent · Wed Dec 31 23:00:00 EST 1997

OSTI ID:871408

Keller, David Gerard ^[1]; Giovannoni, Richard Thomas ^[2]; MacFadden, Kenneth Orville ^[3]

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1. Baltimore, MD
2. Reisterstown, MD
3. Highland, MD

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.

• Research Organization: United States Advanced Battery Consortium, Dearborn, MI (US)
• DOE Contract Number: FC02-91CE50336
• Assignee: W. R. Grace & Co.-Conn. (New York, NY)
• Patent Number(s): US 5725822
• OSTI ID: 871408
• Country of Publication: United States
• Language: English

Related Subjects

/264/
active
active electrode
adhered
barrel
battery
battery cell
battery cells
cells
collectors
component
composition
compounded
contains
current
current collector
current collectors
downstream
downstream section
electrode
electrode material
electrode sheet
electrolyte
electrolyte composition
extruded
extruder
extrusion
fed
feed
fluid
fluid component
formed
injection
introduced
liquid
liquid injection
lithium
lithium salt
material
mixing
polymer
polymer electrolyte
portion
product
salt
section
separately
sheet
sheet product
sheets
solid
solid polymer
throat