# US 2019/0245197 A1 · Electrodes for batteries and methods for making same

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- Number: US 2019/0245197 A1
- Document ID: US20190245197A1
- Status: Published application
- Kind: A1
- Application number: 16/225,667
- Filed: 2018-12-19
- Published: 2019-08-08
- Earliest claimed: 2018-02-06
- Assignees: Pacesetter, Inc.
- Applicants: Pacesetter, Inc.
- Inventors: Xiaofei Jiang
- Web page: https://patentgrep.com/patent/US20190245197A1

## CPC

- H01M 4/08: Processes of manufacture
- H01M 4/043: {involving compressing or compaction}
- H01M 4/0471: {involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis}
- H01M 4/06: Electrodes for primary cells
- H01M 4/364: {as mixtures}
- H01M 4/382: {Lithium (H01M4/405 takes precedence)}
- H01M 4/485: of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence)
- H01M 4/54: of silver
- H01M 4/5835: {Comprising fluorine or fluoride salts}
- H01M 4/587: for inserting or intercalating light metals
- H01M 4/623: {fluorinated polymers}
- H01M 4/625: {Carbon or graphite}
- H01M 4/663: {containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres}
- H01M 4/667: {in the form of layers, e.g. coatings}
- H01M 6/16: with organic electrolyte (H01M6/18 takes precedence)
- H01M 2004/028: {Positive electrodes}
- H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

## Abstract

A method of fabricating a battery electrode includes forming a mixture including an electrode material and a binder; forming an electrode blank from the mixture; heating the electrode blank at a predetermined temperature for a predetermined time to form an annealed electrode blank; and laminating the annealed electrode blank to a current collector. The current collector may include a conductive carbon coating. In such event, the method may further include heating the current collector at a selected temperature for a selected time prior to laminating the annealed electrode blank to the current collector.

## Claims

### Claim 1

A method for fabricating a battery electrode, the method comprising:
forming a mixture including an electrode material and a binder;
forming an electrode blank from the mixture;
heating the electrode blank at a predetermined temperature for a predetermined time to form an annealed electrode blank; and
laminating the annealed electrode blank to a current collector.

### Claim 2 (depends on 1)

The method as claimed in claim 1, wherein the electrode material includes a cathode active material.

### Claim 3 (depends on 2)

The method as claimed in claim 2, wherein the cathode active material includes sub-fluorinated carbon fluoride (CFx).

### Claim 4 (depends on 3)

The method as claimed in claim 3, wherein the cathode active material includes silver vanadium oxide (SVO).

### Claim 5 (depends on 1)

The method as claimed in claim 1, wherein the mixture includes a conductivity enhancer selected from the group consisting of carbon nanotubes, graphene, carbon black, metal nanoparticles, and combinations thereof.

### Claim 6 (depends on 1)

The method as claimed in claim 1, wherein the binder is selected from the group consisting of polyvinylidene, polytetrafluoroethylene, and combinations thereof.

### Claim 7 (depends on 1)

The method as claimed in claim 1, wherein the laminating step includes bonding a first electrode blank to a first side of the current collector and bonding a second electrode blank to a second side of the current collector.

### Claim 8 (depends on 1)

The method as claimed in claim 1, further comprising:
cooling the annealed electrode blank to about room temperature prior to the laminating step.

### Claim 9 (depends on 1)

The method as claimed in claim 1, wherein the predetermined temperature is between about 200° C. and about 300° C.

### Claim 10 (depends on 19)

The method as claimed in claim 19, wherein the predetermined temperature is about 280° C.

### Claim 11 (depends on 9)

The method as claimed in claim 9, wherein the predetermined time is between about 10 minutes and about 1 hour.

### Claim 12 (depends on 1)

The method as claimed in claim 1, wherein the current collector includes a conductive carbon coating.

### Claim 13 (depends on 1)

The method as claimed in claim 1, further comprising:
heating the current collector at a selected temperature for a selected time prior to the laminating step.

### Claim 14 (depends on 13)

The method as claimed in claim 13, wherein the selected temperature is between about 120° C. and about 300° C.

### Claim 15 (depends on 14)

The method as claimed in claim 14, wherein the selected time is between about 5 minutes and about 120 minutes.

### Claim 16

A method for fabricating a battery electrode, the method comprising:
forming a mixture including an electrode material and a binder;
forming an electrode blank from the mixture;
heating a current collector having a conductive coating at a selected temperature for a selected time to form an annealed current collector; and
laminating the annealed current collector to the electrode blank.

### Claim 17 (depends on 16)

The method as claimed in claim 16, wherein the selected temperature is between about 120° C. and about 300° C.

### Claim 18 (depends on 17)

The method as claimed in claim 17, wherein the selected temperature is about 280° C.

### Claim 19 (depends on 17)

The method as claimed in claim 17, wherein the selected time is between about 5 minutes and about 120 minutes.

### Claim 20

A battery electrode, comprising:
a current collector; and
an electrode blank laminated to the current collector, the electrode blank including an electrode material and a binder, and having been annealed at a predetermined temperature for a predetermined time.
