# US 2021/0280905 A1 · Solid electrolyte material and battery using same

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- Number: US 2021/0280905 A1
- Document ID: US20210280905A1
- Status: Published application
- Kind: A1
- Application number: 17/327,791
- Filed: 2021-05-24
- Published: 2021-09-09
- Earliest claimed: 2018-12-28
- Assignees: Panasonic Intellectual Property Management Co., Ltd.
- Applicants: Panasonic Intellectual Property Management Co., Ltd.
- Inventors: MASASHI SAKAIDA; KOKI UENO; AKINOBU MIYAZAKI
- Web page: https://patentgrep.com/patent/US20210280905A1

## CPC

- H01B 1/06: mainly consisting of other non-metallic substances
- H01M 10/0562: Solid materials
- C01F 17/30: Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6 (C01F17/247 - C01F17/294 take precedence)
- H01B 1/08: oxides
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- C01P 2004/61: Micrometer sized, i.e. from 1-100 micrometer
- C01P 2004/62: Submicrometer sized, i.e. from 0.1-1 micrometer
- H01M 2300/008: Halides
- Y02E 60/10: Energy storage using batteries
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C01F: COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts of peroxyacids C01B15/00; sulfides or polysulfides of magnesium, calcium, strontium, or barium C01B17/42; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds other than ammonia or cyanogen containing nitrogen and non-metals and optionally metals C01B21/082; amides or imides of silicon C01B21/087}; metal {imides or} amides C01B21/092, {C01B21/0923}; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanic acid C01C3/14; salts of cyanamide C01C3/16; thiocyanates C01C3/20; {double sulfates of magnesium with sodium or potassium C01D5/12; with other alkali metals C01D15/00, C01D17/00})
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

The present disclosure provides a solid electrolyte material having high lithium ion conductivity. A solid electrolyte according to the present disclosure contains Li, Sm, O, and X. X is at least one element selected from the group consisting of Cl, Br, and I.

## Claims

### Claim 1

A solid electrolyte material comprising
Li, Sm, O, and X,
wherein X is at least one element selected from the group consisting of Cl, Br, and I, and
the solid electrolyte material is denoted by Composition formula (1) below,
Li2+b-3a(Sm1-xMx)aOXb (1)
wherein M is at least one element selected from the group consisting of Y, La, and Gd, and mathematical formulae below
1.0≤a≤2.17
1.5≤b≤6.0, and
0≤x≤0.5
are satisfied.

### Claim 2 (depends on 1)

The solid electrolyte material according to claim 1,
wherein a mathematical formula 1.2≤a≤1.5 is satisfied.

### Claim 3 (depends on 1)

The solid electrolyte material according to claim 1,
wherein a mathematical formula x=0 is satisfied.

### Claim 4 (depends on 1)

A battery comprising:
a positive electrode;
a negative electrode; and
an electrolyte layer disposed between the positive electrode and the negative electrode,
wherein at least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer contains the solid electrolyte material according to claim 1.