# US 12,191,470 B2 · Battery utilizing printable lithium

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- Number: US 12,191,470 B2
- Document ID: US12191470B2
- Status: Granted
- Kind: B2
- Application number: 18/388,369
- Filed: 2023-11-09
- Published: 2024-04-25
- Granted: 2025-01-07
- Earliest claimed: 2018-03-22
- Assignees: Livent USA Corp.
- Applicants: Livent USA Corp.
- Inventors: Marina Yakovleva; Kenneth Brian Fitch; Jian Xia; William Arthur Greeter, Jr.
- Web page: https://patentgrep.com/patent/US12191470B2

## CPC

- H01M 4/0404: {by coating on electrode collectors}
- H01M 4/134: Electrodes based on metals, Si or alloys
- H01M 4/366: {as layered products}
- H01M 4/382: {Lithium (H01M4/405 takes precedence)}
- H01M 4/62: Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M 4/622: {being polymers}
- H01M 4/628: {Inhibitors, e.g. gassing inhibitors, corrosion inhibitors}
- H01M 10/052: Li-accumulators
- H01M 10/0585: of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
- H01M 4/38: of elements or alloys
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- 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
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A battery comprising a lithium metal anode; a solid electrolyte; a cathode; and at least one interface layer between a surface of the cathode and a surface of the solid electrolyte, the interface layer formed of a printable lithium composition comprised of lithium metal powder, a polymer binder compatible with the lithium metal powder, a rheology modifier compatible with the lithium metal powder, and a solvent compatible with the lithium metal powder and with the polymer binder, wherein the interface layer improves the uniformity of the surface of the solid electrolyte thereby optimizing contact between the surface of the cathode and the surface of the solid electrolyte for better battery performance.

## Claims

### Claim 1

A battery comprising:
a lithium metal anode;
a solid electrolyte;
a cathode; and
at least one interface layer between a surface of the cathode and a surface of the solid electrolyte, the interface layer formed of a printable lithium composition comprised of lithium metal powder, a polymer binder compatible with the lithium metal powder, a rheology modifier compatible with the lithium metal powder, and a solvent compatible with the lithium metal powder and with the polymer binder,
wherein the interface layer improves the uniformity of the surface of the solid electrolyte thereby optimizing contact between the surface of the cathode and the surface of the solid electrolyte for better battery performance.

### Claim 2 (depends on 1)

The battery of claim 1, wherein the lithium metal anode or cathode is formed from the printable lithium composition of the at least one interface layer.

### Claim 3 (depends on 2)

The battery of claim 2, wherein the printable lithium composition forming the at least one interface layer, lithium metal anode or cathode comprises between about 5% to about 50% by weight of the lithium metal powder, between about 0.1% to about 20% by weight of the polymer binder, between about 0.1% to about 30% by weight of the rheology modifier, and between about 50% to about 95% by weight of the solvent.

### Claim 4 (depends on 3)

The battery of claim 3, wherein the interface layer is applied to the lithium metal anode or cathode by deposition.

### Claim 5 (depends on 1)

The battery of claim 1, wherein the cathode is a composite cathode.

### Claim 6 (depends on 5)

The battery of claim 5, wherein the composite cathode comprises sulfur.

### Claim 7 (depends on 1)

The battery of claim 1, wherein the interface layer comprises a foil or film formed from the printable lithium composition of the at least one interface layer.