# US 2020/0403274 A1 · All solid battery

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2020/0403274 A1
- Document ID: US20200403274A1
- Status: Published application
- Kind: A1
- Application number: 16/899,539
- Filed: 2020-06-11
- Published: 2020-12-24
- Earliest claimed: 2019-06-21
- Assignees: Taiyo Yuden Co., Ltd.
- Applicants: Taiyo Yuden Co., Ltd.
- Inventors: Sachie TOMIZAWA; Daigo ITO; Chie KAWAMURA; Kotaro MIZUNO
- Web page: https://patentgrep.com/patent/US20200403274A1

## CPC

- H01M 10/0585: of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
- H01M 4/625: {Carbon or graphite}
- H01M 10/0562: Solid materials
- H01M 4/0404: {by coating on electrode collectors}
- H01M 4/0471: {involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis}
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 2300/0068: inorganic
- H01M 2300/0071: Oxides
- 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

An all solid battery includes: a solid electrolyte layer of which a main component is oxide-based solid electrolyte; a first electrode layer that is provided on a first main face of the solid electrolyte layer and includes an active material; and a second electrode layer that is provided on a second main face of the solid electrolyte layer and includes an active material, wherein at least one of the first electrode layer and the second electrode layer includes an aggregate of carbon particles and a cavity, wherein the aggregate demarcates at least a part of the cavity.

## Claims

### Claim 1

An all solid battery comprising:
a solid electrolyte layer of which a main component is oxide-based solid electrolyte;
a first electrode layer that is provided on a first main face of the solid electrolyte layer and includes an active material; and
a second electrode layer that is provided on a second main face of the solid electrolyte layer and includes an active material,
wherein at least one of the first electrode layer and the second electrode layer includes an aggregate of carbon particles and a cavity,
wherein the aggregate demarcates at least a part of the cavity.

### Claim 2 (depends on 1)

The all solid battery as claimed in claim 1, wherein an aggregation diameter of the aggregate is 0.5 μm or more and 50 μm or less.

### Claim 3 (depends on 1)

The all solid battery as claimed in claim 1, wherein a diameter of the cavity is 0.2 μm or more and 10 μm or less.

### Claim 4 (depends on 1)

The all solid battery as claimed in claim 1, wherein an area ratio of the cavity in the aggregate is 10% or more and 80% or less.

### Claim 5 (depends on 1)

The all solid battery as claimed in claim 1, wherein a weight of the carbon particles with respect to a ceramic component in the at least one of the first electrode layer and the second electrode layer is 5 wt % or more and 80 wt % or less.

### Claim 6 (depends on 1)

The all solid battery as claimed in claim 1, wherein the carbon particles have a primary particle average diameter of 15 nm or more and 90 nm or less and have a BET value of 8 m2/g or more and 200 m2/g or less.

### Claim 7 (depends on 1)

The all solid battery as claimed in claim 1, wherein a ratio of a total area of the aggregate with respect to a whole of the electrode layer in the at least one of the first electrode layer and the second electrode layer is 15% or more and 60% or less.

### Claim 8 (depends on 1)

The all solid battery as claimed in claim 1, wherein the aggregate surrounds the cavity.