Process to produce lithium-polymer batteries

Patent · Thu Jan 01 04:00:00 EST 1998

OSTI ID:871662

MacFadden, Kenneth Orville ^[1]

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1. Highland, MD

A polymer bonded sheet product suitable for use as an electrode in a non-aqueous battery system. A porous electrode sheet is impregnated with a solid polymer electrolyte, so as to diffuse into the pores of the electrode. The composite is allowed to cool, and the electrolyte is entrapped in the porous electrode. The sheet products composed have the solid polymer electrolyte composition diffused into the active electrode material by melt-application of the solid polymer electrolyte composition into the porous electrode material sheet. The solid polymer electrolyte is maintained at a temperature that allows for rapid diffusion into the pores of the electrode. The composite electrolyte-electrode sheets are formed on current collectors and can be coated with solid polymer electrolyte prior to battery assembly. The interface between the solid polymer electrolyte composite electrodes and the solid polymer electrolyte coating has low resistance.

• 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 5772934
• OSTI ID: 871662
• Country of Publication: United States
• Language: English

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active
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allowed
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assembly
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bonded
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coated
coating
collectors
composed
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composite electrode
composite electrodes
composite electrolyte
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composition
cool
current
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diffuse
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entrapped
formed
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lithium-polymer
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maintained
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non-aqueous
non-aqueous battery
polymer
polymer electrolyte
pores
porous
porous electrode
prior
process
produce
produce lithium-polymer
product
products
rapid
resistance
sheet
sheet product
sheets
solid
solid polymer
suitable
temperature