# US 9,520,591 B2 · Methods of coating an electrically conductive substrate and related electrodepositable compositions

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- Number: US 9,520,591 B2
- Document ID: US9520591B2
- Status: Granted
- Kind: B2
- Application number: 14/867,307
- Filed: 2015-09-28
- Published: 2016-01-21
- Granted: 2016-12-13
- Earliest claimed: 2012-11-27
- Assignees: PPG Industries Ohio, Inc.
- Applicants: PPG Industries Ohio, Inc.
- Inventors: Randy E. Daughenbaugh; Stuart D. Hellring; Robin M. Peffer
- Web page: https://patentgrep.com/patent/US9520591B2

## CPC

- C09D 7/61: inorganic
- C09D 5/448: {characterised by the additives used (C09D5/4403 - C09D5/4476, C09D5/4492 take precedence)}
- C25D 13/16: Wires; Strips; Foils
- C25D 15/02: Combined electrolytic and electrophoretic processes {with charged materials}
- H01M 4/0452: {from solutions}
- H01M 4/0457: {from dispersions or suspensions; Electrophoresis}
- H01M 4/136: Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
- H01M 4/1397: of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
- H01M 4/505: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
- H01M 4/525: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
- H01M 4/5825: {Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines}
- H01M 4/622: {being polymers}
- H01M 4/625: {Carbon or graphite}
- H01M 4/661: {Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence)}
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- Y02E 60/10: Energy storage using batteries
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

Methods are disclosed in which an electrically conductive substrate is immersed into an electrodepositable composition, the substrate serving as an electrode in an electrical circuit comprising the electrode and a counter-electrode immersed in the composition, a coating being applied onto or over at least a portion of the substrate as electric current is passed between the electrodes. The electrodepositable composition comprises: (a) an aqueous medium; (b) an ionic resin; and (c) solid particles.

## Claims

### Claim 1

A method of producing an electrode for a lithium on battery comprising:
immersing an electrically conductive substrate into an electrodepositable composition, the substrate serving as the electrode in an electrical circuit comprising the electrode and a counter-electrode immersed in the composition, a coating being applied onto or over at least a portion of the substrate as electric current is passed between the electrodes,
the electrodepositable composition comprising:
(a) an aqueous medium;
(b) an ionic resin; and
(c) solid particles comprising:
(i) lithium-containing particles, and
(ii) electrically conductive particles;
wherein the composition has a weight ratio of solid particles to ionic resin of at least 17:1 and the weight ratio of lithium-containing particles to electrically conductive particles being at least 3:1.

### Claim 2 (depends on 1)

The method of claim 1, wherein the substrate is a foil comprising aluminum, iron, copper, manganese, nickel, a combination thereof, and/or an alloy thereof.

### Claim 3 (depends on 1)

The method of claim 1, wherein the ionic resin is anionic.

### Claim 4 (depends on 3)

The method of claim 3, wherein the anionic resin comprises a base-neutralized carboxylic acid group-containing resin.

### Claim 5 (depends on 1)

The method of claim 1, wherein the lithium-containing particles comprise LiCoO2, LiNiO2, LiFePO4, LiCoPO4, LiMnO2, LiMn2O4, Li(NiMnCo)O2, and/or Li(NiCoAl)O2.

### Claim 6 (depends on 1)

The method of claim 1, wherein the lithium-containing particles are present in en amount of at least 50 percent by weight, based on the total weight of the solids in the composition.

### Claim 7 (depends on 1)

The method of claim 1, wherein the electrically conductive particles comprise electrically conductive carbon particles.

### Claim 8 (depends on 7)

The method of claim 7, wherein the electrically conductive carbon particles comprise carbon black.

### Claim 9 (depends on 1)

The method of claim 1, wherein the composition has a total solids content of 1 to 5 percent by weight, based on the total weight of the composition.