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US 2010/0075226 A1Published application
Electrodes including novel binders and methods of making and using the same
Assignee3M Innovative Properties Company
InventorsPhat T. Pham, Dinh B. Le
Life of this patent
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Abstract
Provided are electrode compositions for lithium-ion electrochemical cells that include novel binders. The novel binders include lithium polysalts of carboxylic and sulfonic acids, lithium salts of copolymers of acids, lithium polysulfonate fluoropolymers, a cured phenolic resin, cured glucose, and combinations thereof.
Claims17
1-16. (canceled)
An electrode composition for a negative electrode comprising:
- a powdered material capable of undergoing lithiation and delithiation, wherein the powdered material is selected from tin, a tin alloy, carbon, and a combination thereof;
- and
- a nonelastic binder comprising a lithium polyacrylate.
An electrode composition for a negative electrode comprising:
- a powdered material capable of undergoing lithiation and delithiation, wherein the powdered material is selected from tin, a tin alloy, silicon, silicon alloy carbon, and a combination thereof;
- and
- a nonelastic binder comprising a lithium polyacrylate,
- wherein more than 100% to about 107% of the carboxylic acid groups have been neutralized.
1 more element
An electrode composition comprising
- a powdered material capable of undergoing lithiation and delithiation, wherein the powdered material is selected from tin, a tin alloy, silicon, a silicon alloy, carbon, and a combination thereof;
- and
- a binder selected from a lithium polystyrenesulfonate, a lithium polysulfonate fluoropolymer, a lithium salt of a copolymer that includes maleic acid or a sulfonic acid, a polyacrylonitrile polymer, a cured phenolic resin, cured glucose, and combinations thereof.
An electrode composition for a positive electrode comprising:
- a powdered material capable of undergoing lithiation and delithiation, wherein the powdered material is selected from LiCoO2;
- a lithium metal oxide comprising cobalt, manganese, and nickel;
- Fe2O3;
- Li4/3Ti5/3O4;
- LiV3O8;
- LiV2O5;
- LiCO0.2Ni0.8O2;
- LiNiO2;
- LiFePO4;
- LiMnPO4;
- LiCoPO4;
- LiMn2O4;
- and a combination thereof;
- and
- a binder selected from a lithium polystyrenesulfonate, a lithium polysulfonate fluoropolymer, a lithium salt of a copolymer that includes maleic acid or a sulfonic acid, a polyacrylonitrile polymer, a cured phenolic resin, cured glucose, and combinations thereof.
12 more elements
A method of making an electrode comprising:
- providing a current collector;
- providing a powdered material capable of undergoing lithiation and delithiation, wherein the powdered material is selected from tin;
- a tin alloy;
- carbon;
- LiCoO2;
- a lithium metal oxide comprising cobalt, manganese, and nickel;
- Fe2O3;
- Li4/3Ti5/3O4;
- LiV3O8;
- LiV2O5;
- LiCO0.2Ni0.8O2;
- LiNiO2;
- LiFePO4;
- LiMnPO4;
- LiCoPO4;
- LiMn2O4;
- and a combination thereof;
- and
- applying to the current collector a coating that comprises the powdered material and a nonelastic binder comprising a lithium polyacrylate.
16 more elements
Dependencies are inferred from the claim text.