# US 2014/0154586 A1 · Laminate for all-solid type battery

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- Number: US 2014/0154586 A1
- Document ID: US20140154586A1
- Status: Published application
- Kind: A1
- Application number: 14/093,087
- Filed: 2013-11-29
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Murata Manufacturing Co., Ltd.
- Applicants: Murata Manufacturing Co., Ltd.
- Inventors: Takeshi Hayashi; Masutaka Ouchi; Makoto Yoshioka; Takeo Ishikura; Akisuke Ito
- Web page: https://patentgrep.com/patent/US20140154586A1

## CPC

- H01M 10/052: Li-accumulators
- H01M 4/485: of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence)
- 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 10/4235: {Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence)}
- 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 laminate for an all-solid type battery which is an electrode/electrolyte laminate used in an all-solid type battery. The laminate includes a positive electrode layer, a solid electrolyte layer and a negative electrode layer in this order, and at least one intermediate layer disposed between (a) the positive electrode layer and the solid electrolyte layer and (b) the negative electrode layer and the solid electrolyte layer. The solid electrolyte layer contains a Li-containing oxide having a garnet crystal structure, and the intermediate layer contains monoclinic Li2MO3, where M represents Ti or Mn.

## Claims

### Claim 1

A laminate for an all-solid type battery, the laminate comprising:
a solid electrolyte layer having first and second opposed surfaces;
a positive electrode layer adjacent the first surface of the solid electrolyte layer;
a negative electrode layer adjacent the second surface of the solid electrolyte layer, and
an intermediate layer disposed between at least one of (a) the positive electrode layer and the solid electrolyte layer and (b) the negative electrode layer and the solid electrolyte layer, wherein
the solid electrolyte layer contains a Li-containing oxide having a garnet crystal structure, and
the intermediate layer contains monoclinic Li2MO3, where M represents Ti or Mn.

### Claim 2 (depends on 1)

The laminate for an all-solid type battery according to claim 1, wherein the laminate is a sintered body.

### Claim 3 (depends on 2)

The laminate for an all-solid type battery according to claim 2, wherein the sintered body is a polycrystal body.

### Claim 4 (depends on 1)

The laminate for an all-solid type battery according to claim 1, wherein the intermediate layer has a thickness of 1 μm to 50 μm.

### Claim 5 (depends on 1)

The laminate for an all-solid type battery according to claim 1, wherein the Li-containing oxide is a Li—La—O oxide.

### Claim 6 (depends on 1)

The laminate for an all-solid type battery according to claim 1, wherein a ratio by which the Li-containing oxide occupies the solid electrolyte layer is about 95 wt % to 100 wt %.

### Claim 7 (depends on 1)

The laminate for an all-solid type battery according to claim 1, wherein the solid electrolyte layer does not contain a sulfur-containing Li compound, a nitrogen-containing Li compound or a phosphorus-containing Li compound.

### Claim 8 (depends on 1)

The laminate for an all-solid type battery according to claim 1, wherein at least one of the positive electrode layer and the negative electrode layer contain an electrode active substance of at least one kind selected from a lithium titanium oxide and a titanium oxide, each capable of storing and releasing Li ions; and the intermediate layer contains monoclinic Li2TiO3.

### Claim 9 (depends on 8)

The laminate for an all-solid type battery according to claim 8, wherein the electrode active substance is at least one kind selected from TiO2, Li4Ti5O12 and Li2Ti3O7.

### Claim 10 (depends on 8)

The laminate for an all-solid type battery according to claim 8, wherein a ratio by which the electrode active substance occupies the at least one of the positive electrode layer and the negative electrode layer is about 85 wt % to 99 wt %.

### Claim 11 (depends on 1)

The laminate for an all-solid type battery according to claim 1, wherein the positive electrode layer and the negative electrode layer contain an electrode active substance of at least one kind selected from a lithium manganese oxide and a manganese oxide, each capable of storing and releasing Li ions; and the intermediate layer contains monoclinic Li2MnO3.

### Claim 12 (depends on 11)

The laminate for an all-solid type battery according to claim 11, wherein the electrode active substance is at least one kind selected from LiMn2O4, MnO2, LiNi0.5Mn1.5O4 and Li2MnO3—LiRO2 solid solution, where R represents Ni or Co.

### Claim 13 (depends on 11)

The laminate for an all-solid type battery according to claim 11, wherein a ratio by which the electrode active substance occupies the at least one of the positive electrode layer and the negative electrode layer is about 85 wt % to 99 wt %.

### Claim 14 (depends on 1)

An all-solid type battery comprising a laminate according to claim 1.