Method and system for water soluble weak acidic resins as carbon precursors for silicon-dominant anodes

Patent metadata

Field	Value
Publication number	US-12113200-B2
Application number	US-202117332689-A
Country	US
Kind code	B2
Filing date	May 27, 2021
Priority date	Jun 9, 2020
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

Systems and methods for water soluble weak acidic resins as carbon precursors for silicon-dominant anodes may include an electrode coating layer on a current collector, where the electrode coating layer is formed from silicon and a primary resin carbon precursor; wherein the primary resin carbon precursor comprises a water-soluble acidic polyamide imide functionalized with acidic groups and one or more polymeric stabilizing additives. The electrode coating layer may also include a base and/or a surfactant. The electrode coating layer may be more than 70% silicon.

First claim

The invention claimed is:

1. A method of forming an electrode, the method comprising:
fabricating a battery electrode comprising an electrode coating layer on a current collector, the electrode coating layer formed from silicon and a primary resin carbon precursor; wherein said primary resin carbon precursor comprises a water-soluble acidic polyamide imide functionalized with acidic groups and one or more polymeric stabilizing additives; and wherein the electrode coating layer also comprises one or more bases; and
wherein the one or more polymeric stabilizing additives comprises one or more of polyacrylic acid (PAA); poly (maleic acid, methyl methacrylate/methacrylic acid, butadiene/maleic acid); water soluble PAA: polyimide; ammonium lignosulfonate; kraft lignin; dextran; pullulan (polysaccharide polymer); phenolic resins; formaldehyde based resins; melamine-formaldehyde based resins; silane based resins; polyurethane; acrylic emulsions; chitosan; polymethyl methacrylate; poly(methacrylic acid); poly(vinyl acetate)/poly(vinyl alcohol) complexes: water-based acrylic and stryrene-acrylic emulsion polymers; carboxylated styrene-butadiene binders; acrylic resin; rotaxane; poly(acrylic acid); cellulose; starch; polysacharides; glycogen; carbohydrates; and polymers with backbones comprising sucrose, glucose, sucralose, xylitol, sorbitol, sucralose, glucosidases, galactose, and maltose.

2. The method according to claim 1 , wherein the electrode coating layer further comprises one or more surfactants.

3. The method according to claim 1 , wherein the one or more bases comprises Triethanolamine, Triethylamine, N-Methyldiethanolamine, Butyldiethanolamine, Diethylamine, Ethylamine, Tetrabutylammonium hydroxide, Tetramethylammonium hydroxide, Tetramethylammonium hydroxide, Triisopropanolamine, Trolamine, Amino-2-propanol, Triisobutylamine, N-Isopropyl-N-methyl-tert-butylamine, 2-Amino-2-methyl-1-propanol, 1-Amino-2-butanol, 2-Amino-1-butanol, Diethanolamine, Ethanolamine, 2-Dimethylaminoethanol, N-Phenyldiethanolamine, 2-(Dibutylamino)ethanol, 2-(Butylamino)ethanol, N-tert-Butyldiethanolamine, N-Ethyldiethanolamine, Avridine, and 2-(Diisopropylamino)ethanol.

4. The method according to claim 1 , wherein the current collector comprises a metal foil.

5. The method according to claim 1 , wherein the metal current collector comprises one or more of a copper, tungsten, stainless steel, and nickel foil in electrical contact with the electrode coating layer.

6. The method according to claim 1 , wherein the electrode coating layer comprises more than 70% silicon.

7. The method according to claim 1 , wherein the battery electrode is in a lithium ion battery.

8. A battery electrode, the electrode comprising:
an electrode coating layer on a current collector, the electrode coating layer formed from silicon and a primary resin carbon precursor; wherein said primary resin carbon precursor comprises a water-soluble acidic polyamide imide functionalized with acidic groups and one or more polymeric stabilizing additives; and wherein the electrode coating layer also comprises one or more bases; and
wherein the one or more polymeric stabilizing additives comprises one or more of polyacrylic acid (PAA); poly (maleic acid, methyl methacrylate/methacrylic acid, butadiene/maleic acid); water soluble PAA; polyimide; ammonium lignosulfonate; kraft lignin; dextran; pullulan (polysaccharide polymer); phenolic resins; formaldehyde based resins; melamine-formaldehyde based resins: silane based resins: polyurethane; acrylic emulsions; chitosan; polymethyl methacrylate; poly(methacrylic acid); poly(vinyl acetate)/poly(vinyl alcohol) complexes; water-based acrylic and stryrene-acrylic emulsion polymers; carboxylated styrene-butadiene binders; acrylic resin; rotaxane; poly(acrylic acid): cellulose; starch; polysacharides; glycogen; carbohydrates; and polymers with backbones comprising sucrose, glucose, sucralose, xylitol, sorbitol, sucralose, glucosidases, galactose, and maltose.

9. The electrode according to claim 8 , wherein the electrode coating layer further comprises one or more surfactants.

10. The electrode according to claim 8 , wherein the one or more bases comprises Triethanolamine, Triethylamine, N-Methyldiethanolamine, Butyldiethanolamine, Diethylamine, Ethylamine, Tetrabutylammonium hydroxide, Tetramethylammonium hydroxide, Tetramethylammonium hydroxide, Triisopropanolamine, Trolamine, Amino-2-propanol, Triisobutylamine, N-Isopropyl-N-methyl-tert-butylamine, 2-Amino-2-methyl-1-propanol, 1-Amino-2-butanol, 2-Amino-1-butanol, Diethanolamine, Ethanolamine, 2-Dimethylaminoethanol, N-Phenyldiethanolamine, 2-(Dibutylamino)ethanol, 2-(Butylamino)ethanol, N-tert-Butyldiethanolamine, N-Ethyldiethanolamine, Avridine, and 2-(Diisopropylamino)ethanol.

11. The electrode according to claim 8 , wherein the current collector comprises a metal foil.

12. The electrode according to claim 8 , wherein the metal current collector comprises one or more of a copper, tungsten, stainless steel, and nickel foil in electrical contact with the electrode coating layer.

13. The electrode according to claim 8 , wherein the electrode coating layer comprises more than 70% silicon.

14. The electrode according to claim 8 , wherein the electrode is in electrical and physical contact with an electrolyte.

15. The electrode according to claim 8 , wherein the battery electrode is in a lithium ion battery.

16. A battery, the battery comprising:
a cathode, a separator, an electrolyte, and an anode, the anode comprising. an electrode coating layer on a current collector, the electrode coating layer formed from silicon and a primary resin carbon precursor; wherein said primary resin carbon precursor comprises a water-soluble acidic polyamide imide functionalized with acidic groups and one or more polymeric stabilizing additives; and wherein the electrode coating layer also comprises one or more bases; and
wherein the one or more polymeric stabilizing additives comprises one or more of polyacrylic acid (PAA); poly (maleic acid, methyl methacrylate/methacrylic acid, butadiene/maleic acid); water soluble PAA; polyimide; ammonium lignosulfonate; kraft lignin; dextran; pullulan (polysaccharide polymer); phenolic resins; formaldehyde based resins; melamine-formaldehyde based resins; silane based resins; polyurethane; acrylic emulsions; chitosan; polymethyl methacrylate; poly(methacrylic acid); poly(vinyl acetate)/poly(vinyl alcohol) complexes; water-based acrylic and stryrene-acrylic emulsion polymers; carboxylated styrene-butadiene binders; acrylic resin; rotaxane; poly(acrylic acid); cellulose; starch; polysacharides; glycogen; carbohydrates; and polymers with backbones comprising sucrose, glucose, sucralose, xylitol, sorbitol, sucralose, glucosidases, galactose, and maltose.

Assignees

• Enevate Corp

Inventors

• Ansari Younes
• Ji Liwen
• Park Benjamin

Classifications

• H01M4/134 Primary

  Electrodes based on metals, Si or alloys · CPC title

• H01M4/0404

  by coating on electrode collectors · CPC title

• H01M4/0471

  involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis · CPC title

• H01M2004/027

  Negative electrodes · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title