# US 12,113,186 B2 · Electrode for all solid-state battery including solid electrolyte

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- Number: US 12,113,186 B2
- Document ID: US12113186B2
- Status: Granted
- Kind: B2
- Application number: 16/482,542
- Filed: 2018-09-11
- Published: 2020-01-02
- Granted: 2024-10-08
- Earliest claimed: 2017-09-13
- Assignees: LG Energy Solution, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Jung-Pil Lee; Ji-Young Kim; Hyo-Sik Kim; Eun-Kyung Mok; Seung-He Woo; Hye-Ri Jung
- Web page: https://patentgrep.com/patent/US12113186B2

## CPC

- H01M 10/52: Removing gases inside the secondary cell, e.g. by absorption (vent plugs or other mechanical arrangements for facilitating escape of gases H01M50/30)
- H01M 4/13: Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M 4/366: {as layered products}
- H01M 4/62: Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M 4/625: {Carbon or graphite}
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 10/0562: Solid materials
- H01M 10/0565: Polymeric materials, e.g. gel-type or solid-type
- H01M 2300/0068: inorganic
- H01M 2300/0071: Oxides
- H01M 2300/0082: Organic polymers
- H01M 2300/0085: Immobilising or gelification of electrolyte
- H01M 2300/0091: in the form of mixtures
- Y02E 60/10: Energy storage using batteries
- 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

An electrode for an all solid-state battery including an electrode current collector, and an electrode active material layer formed on at least one surface of the electrode current collector, wherein the electrode active material layer includes electrode active material particles, a solid electrolyte coated on at least part of surface of the electrode active material particles to connect the electrode active material particles to each other, and a linear structure distributed between the electrode active material particles.

## Claims

### Claim 1

An electrode for an all solid-state battery, comprising:
an electrode current collector; and
an electrode active material layer formed on at least one surface of the electrode current collector,
wherein the electrode active material layer comprises
electrode active material particles,
a solid electrolyte coated on at least part of a surface of the electrode active material particles to connect the electrode active material particles to each other, wherein the solid electrolyte consists of a polymer-based solid electrolyte formed by adding polymer resin to a solvated lithium salt, comprising polyethyleneoxide and lithium salt,
a linear structure distributed between the electrode active material particles,
wherein the linear structure comprises halloysite nanotube,
wherein microporous channels are formed between the electrode active material particles and the linear structure,
wherein the microporous channels are in communication with the outside of the electrode to provide a gas flow path, through which gas within the electrode can be discharged out of the electrode,
wherein the linear structure is 3 μm to 100 μm in length;
wherein the linear structure has an aspect ratio of 3 or more, and
wherein the linear structure exhibits a tensile strength in a range of 10 MPa to 100 MPa.

### Claim 2 (depends on 1)

The electrode for an all solid-state battery according to claim 1, wherein the electrode active material layer further comprises a conductive material that is distributed on the surface of the electrode active material particles, and inside of the solid electrolyte or on a surface of the solid electrolyte.

### Claim 3 (depends on 1)

The electrode for an all solid-state battery according to claim 1, wherein the linear structure is 5 μm to 50 μm long.

### Claim 4 (depends on 1)

The electrode for an all solid-state battery according to claim 1, wherein the linear structure has a diameter of 30 nm to 10 μm.

### Claim 5 (depends on 1)

The electrode for an all solid-state battery according to claim 1, wherein the linear structure consists of halloysite nanotube.

### Claim 6 (depends on 1)

The electrode for an all solid-state battery according to claim 1, wherein the polymer-based solid electrolyte is not a gel electrolyte.

### Claim 7 (depends on 1)

The electrode for an all solid-state battery according to claim 1, wherein the linear structure does not deform in an electrode rolling process and maintains the aspect ratio.

### Claim 8 (depends on 1)

An all solid-state battery, comprising: a positive electrode; a negative electrode; and a solid electrolyte layer interposed between the positive electrode and the negative electrode, wherein at least one of the positive electrode and the negative electrode is the electrode according to claim 1.

### Claim 9 (depends on 1)

An all-solid state battery comprising the electrode according to claim 1.