# US 2021/0280904 A1 · Nitrogen-doped sulfide-based solid electrolyte for all-solid batteries

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- Number: US 2021/0280904 A1
- Document ID: US20210280904A1
- Status: Published application
- Kind: A1
- Application number: 17/320,799
- Filed: 2021-05-14
- Published: 2021-09-09
- Earliest claimed: 2017-12-27
- Assignees: Hyundai Motor Company; Kia Corporation; Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
- Applicants: Hyundai Motor Company; Kia Corporation; IUCF-HYU ( Industry-University Cooperation Foundation Hanyang University)
- Inventors: Ju Yeong Seong; Yong Jun Jang; Hong Seok Min; Sa Heum Kim; Yong Sub Yoon; Pil Gun Oh; Dong Wook Shin; Chan Hwi Park; Jin Oh Son
- Web page: https://patentgrep.com/patent/US20210280904A1

## CPC

- H01M 10/0562: Solid materials
- C01B 25/10: Halides or oxyhalides of phosphorus
- C01B 25/14: Sulfur, selenium, or tellurium compounds of phosphorus
- C01D 15/00: Lithium compounds
- C04B 35/547: based on sulfides or selenides {or tellurides}
- H01M 10/052: Li-accumulators
- C01P 2002/72: by d-values or two theta-values, e.g. as X-ray diagram
- C04B 2235/3203: Lithium oxide or oxide-forming salts thereof
- C04B 2235/3852: Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
- C04B 2235/444: Halide containing anions, e.g. bromide, iodate, chlorite
- C04B 2235/446: Sulfides, tellurides or selenides
- C04B 2235/447: Phosphates or phosphites, e.g. orthophosphate or hypophosphite
- C04B 2235/76: Crystal structural characteristics, e.g. symmetry
- C04B 2235/96: Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane
- H01M 2300/008: Halides
- 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
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- C01D: COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts of peroxyacids C01B15/00; sulfides C01B17/22; 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 and cyanogen, containing nitrogen and other non-metals C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; phosphides 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; cyanides C01C3/08; salts of cyanic acid C01C3/14; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1: LiaPSbNcXd [Formula 1] wherein 6≤a≤7, 3<b<6, 0<c≤1, 0<d≤2, and each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).

## Claims

### Claim 1

A solid electrolyte for all-solid batteries comprising:
a compound represented by the following Formula 1:
LiaPSbNcXd [Formula 1]
wherein in Formula 1, 6≤a≤7, 3<b<6, 0<c≤1, 0<d≤2; and
each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I),
wherein the compound has an argyrodite-type crystal structure.

### Claim 2 (depends on 1)

The solid electrolyte of claim 1, wherein the compound is represented by the following Formula 2:
Li6+aPS5−aNaX [Formula 2]
wherein in Formula 2, 0<a≤1; and
each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).

### Claim at position 3

3-5. (canceled)

### Claim 6 (depends on 1)

An all-solid battery comprising:
a cathode;
an anode; and
a solid electrolyte layer interposed between the cathode and the anode,
wherein at least one of the cathode, the anode and the solid electrolyte layer comprises a solid electrolyte of claim 1.

### Claim 7

A method of manufacturing a solid electrolyte for all-solid batteries comprising:
providing a mixture of Li2S, P2S5, LiX and Li3N;
grinding the mixture; and
heat-treating the mixture to obtain a compound having an argyrodite-type crystal structure, wherein each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).

### Claim 8 (depends on 7)

The method of claim 7, wherein the compound is represented by the following Formula 1:
LiaPSbNcXd [Formula 1]
wherein in Formula 1, 6≤a≤7, 3<b<6, 0<c≤1, 0<d≤2; and
each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).

### Claim 9 (depends on 7)

The method of claim 7, wherein the compound is represented by the following Formula 2:
Li6+aPS5−aNaX [Formula 2]
wherein in Formula 2, 0<a≤1; and
each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).

### Claim at position 8

10-12. (canceled)

### Claim 13 (depends on 6)

A vehicle comprising an all-solid battery of claim 6.