# US 12,113,166 B2 · Battery

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- Number: US 12,113,166 B2
- Document ID: US12113166B2
- Status: Granted
- Kind: B2
- Application number: 17/546,134
- Filed: 2021-12-09
- Published: 2022-03-31
- Granted: 2024-10-08
- Earliest claimed: 2019-07-04
- Assignees: Panasonic Intellectual Property Management Co., Ltd.
- Applicants: Panasonic Intellectual Property Management Co., Ltd.
- Inventors: Yoshiaki Tanaka; Izuru Sasaki; Tetsuya Asano; Akihiro Sakai
- Web page: https://patentgrep.com/patent/US12113166B2

## CPC

- H01M 10/0562: Solid materials
- H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
- H01M 4/134: Electrodes based on metals, Si or alloys
- H01M 4/621: {Binders}
- H01M 10/052: Li-accumulators
- H01M 2300/0065: Solid electrolytes
- H01M 2300/0068: inorganic
- H01M 2300/0071: Oxides
- H01M 2300/008: Halides
- 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

A battery is equipped with a positive electrode, a first electrolyte layer, a second electrolyte layer, and a negative electrode arranged in this order, in which the first electrolyte layer contains a first solid electrolyte material, the second electrolyte layer contains a second solid electrolyte material different from the first solid electrolyte material, the first solid electrolyte material is represented by chemical formula (1): LiαMβOγVδ where α, β, γ, and δ are all greater than 0, M is at least one element selected from the group consisting of metal elements other than Li, and metalloids, X is at least one element selected from the group consisting of Cl, Br, and I, and a reduction potential of the second solid electrolyte material is lower than a reduction potential of the first solid electrolyte material.

## Claims

### Claim 1

A battery comprising:
a positive electrode, a first electrolyte layer, a second electrolyte layer, and a negative electrode arranged in this order,
wherein:
the first electrolyte layer contains a first solid electrolyte material,
the second electrolyte layer contains a second solid electrolyte material different from the first solid electrolyte material,
the first solid electrolyte material is represented by chemical formula (1) below:
LiαMβOγXδ (1)
where α, β, γ, and δ are all greater than 0,
M is at least one element selected from the group consisting of metal elements other than Li, and metalloids,
X is at least one element selected from the group consisting of Cl, Br, and I, and
a reduction potential of the second solid electrolyte material is lower than a reduction potential of the first solid electrolyte material.

### Claim 2 (depends on 1)

The battery according to claim 1, wherein:
M contains at least one element selected from the group consisting of Nb and Ta.

### Claim 3 (depends on 1)

The battery according to claim 1, wherein:
in chemical formula (1) described above,
0.9≤α≤1.2,
β=1.0,
1.0≤γ≤1.3, and
3.6≤δ≤4.0 are satisfied.

### Claim 4 (depends on 1)

The battery according to claim 1, wherein:
a discharge cut-off voltage is greater than or equal to 2.9 V relative to lithium.

### Claim 5 (depends on 1)

The battery according to claim 1, wherein:
the second solid electrolyte material is represented by chemical formula (2) below:
LipM′qX′r (2)
where p, q, and r are all greater than 0,
M′ is at least one element selected from the group consisting of metal elements other than Li, and metalloids, and
X′ is at least one element selected from the group consisting of Cl, Br, and I.

### Claim 6 (depends on 5)

The battery according to claim 5, wherein:
M′ contains yttrium.

### Claim 7 (depends on 5)

The battery according to claim 5, wherein:
M′ is yttrium, and
p=3, q=1, and r=6 are satisfied.

### Claim 8 (depends on 1)

The battery according to claim 1, wherein:
the second solid electrolyte material is a sulfide solid electrolyte.

### Claim 9 (depends on 8)

The battery according to claim 8, wherein:
the sulfide solid electrolyte contains lithium sulfide and phosphorus sulfide.

### Claim 10 (depends on 8)

The battery according to claim 8, wherein:
the sulfide solid electrolyte is Li2S—P2S5.

### Claim 11 (depends on 1)

The battery according to claim 1, wherein:
the positive electrode contains the first solid electrolyte material.