# US 12,763,359 B2 · All solid-state battery

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- Number: US 12,763,359 B2
- Document ID: US12763359B2
- Status: Granted
- Kind: B2
- Application number: 18/013,307
- Filed: 2021-06-16
- Published: 2023-08-31
- Granted: 2026-10-13
- Earliest claimed: 2020-10-26
- Assignees: Samsung SDI Co., Ltd.
- Applicants: Samsung SDI Co., Ltd.
- Inventors: Jinhoon Yang; Byeonggyu Cho; Jinkyu Kim; Yunchae Jung; Sangil Han
- Web page: https://patentgrep.com/patent/US12763359B2

## CPC

- H01M 10/0562: Solid materials
- H01M 4/133: Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M 4/366: {as layered products}
- H01M 4/621: {Binders}
- H01M 2004/027: {Negative electrodes}
- H01M 2004/028: {Positive electrodes}
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

## Abstract

The present invention relates an all solid-state battery, the all solid-state battery comprising: a current collecting body; a negative electrode comprising a negative electrode layer disposed on one surface of the current collecting body; a positive electrode; and a solid electrolyte layer located between the negative electrode and positive electrode, wherein the negative electrode layer thickness (a) and solid electrolyte layer thickness (b) have the relationship expressed in formula 1. 1.0≤b/a≤6.0 [formula 1].

## Claims

### Claim 1

An all solid-state battery, comprising:
a negative electrode comprising a current collector and a negative electrode layer disposed on one surface of the current collector;
a positive electrode; and
a solid electrolyte located between the negative electrode and the positive electrode,
wherein the negative electrode layer has a thickness of 5 μm to 15 μm,
wherein the solid electrolyte layer has a thickness of 5 μm to 90 μm,
wherein the negative electrode layer includes a negative active material and the negative active material includes a carbon-based material and metal particles,
wherein the solid electrolyte is a sulfide-based solid electrolyte, and
wherein the negative electrode layer thickness (a) and the solid electrolyte layer thickness (b) have the relationship expressed in Equation 1:
2.0≤b/a≤5.0 (Equation 1)

### Claim 2 (depends on 1)

The all solid-state battery of claim 1, wherein the negative active material includes a binder in an amount of 1 wt % to 40 wt % of the negative active material.

### Claim 3 (depends on 2)

The all solid-state battery of claim 2, wherein the binder includes a butadiene-based rubber and a cellulose-based compound.

### Claim 4 (depends on 1)

The all solid-state battery of claim 1, wherein the negative active material includes amorphous carbon.

### Claim 5 (depends on 1)

The all solid-state battery of claim 1, wherein the metal particle is selected from Ag, Zn, Al, Sn, Mg, Ge, Cu, In, Ni, Bi, Au, Si, Pt, Pd, or a combination thereof.

### Claim 6 (depends on 1)

The all solid-state battery of claim 1, wherein the metal particle has a size of 5 nm to 800 nm.

### Claim 7 (depends on 1)

The all solid-state battery of claim 1, wherein the solid electrolyte is LiaMbPcSdAe (where a, b, c, d, and e are all 0 or more and 12 or less, M is Ge, Sn, Si, or a combination thereof, and A is one of F, Cl, Br, or I).

### Claim 8 (depends on 1)

The all solid-state battery of claim 1, wherein the negative electrode further includes a lithium deposition layer between the current collector and the negative electrode layer, after charging.

### Claim 9 (depends on 8)

The all solid-state battery of claim 8, wherein the lithium deposition layer has a thickness of 10 μm to 50 μm.

### Claim 10 (depends on 1)

The all solid-state battery of claim 1, wherein the negative electrode layer has the thickness of 10 μm to less than 15 μm.

### Claim 11 (depends on 10)

The all solid-state battery of claim 10, wherein the solid electrolyte layer has a thickness of 5 μm to 30 μm.