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US 8,076,026 B2Granted
Rechargeable battery using an aqueous binder
AssigneeInternational Battery, Inc.
InventorsMilburn Ebenezer Jacob Muthu, Jacob Benjamin Behler
Life of this patent
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Abstract
A battery having an electrode mix comprising water, a conductive additive and poly (acrylonitrile-co-acrylamide) co-polymer as a binder. The use of poly (acrylonitrile-co-acrylamide) co-polymer eliminates the need for a separate thickener.
Claims13
A battery comprising:
- a positive electrode mix comprising:
- a positive active material comprising a lithium transition metal oxide;
- a water soluble binder comprising a poly (acrylonitrile-co-acrylamide) polymer and water;
- and
- a conductive additive selected from the group consisting of carbon black, acetylene black, carbon fibers, coke, high surface area carbon and graphite and combination thereof;
- a negative electrode mix comprising:
- a negative active material selected from the group consisting of graphite, hard carbon, silicon, tin and lithium titanate;
- an organic solvent-stable, water soluble binder in the absence of a thickening agent and a wetting agent, the binder comprising a poly (acrylonitrile-co-acrylamide) polymer and water;
- and
- the conductive additive;
- and
- an electrolyte comprised of lithium salt in cyclic and linear carbonates.
9 more elements
A battery comprising:
- a positive electrode mix comprising:
- a positive electrode active material;
- a water soluble binder comprising a poly (acrylonitrile-co-acrylamide) polymer and water;
- and
- a conductive additive;
- a negative electrode mix comprising:
- a negative electrode active material;
- a water soluble binder comprising a poly (acrylonitrile-co-acrylamide) polymer and water;
- and
- a conductive additive;
- and
- an electrolyte, and wherein the water soluble binder is provided in the absence of a thickening agent and a wetting agent.
9 more elements
Dependencies are inferred from the claim text.