# US 2014/0193717 A1 · Solid electrolyte, manufacturing method of solid electrolyte, battery and battery pack

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- Number: US 2014/0193717 A1
- Document ID: US20140193717A1
- Status: Published application
- Kind: A1
- Application number: 14/202,539
- Filed: 2014-03-10
- Published: 2014-07-10
- Earliest claimed: 2012-03-23
- Assignees: Kabushiki Kaisha Toshiba
- Applicants: Kabushiki Kaisha Toshiba
- Inventors: Yasuhiro HARADA; Norio TAKAMI; Hiroki INAGAKI
- Web page: https://patentgrep.com/patent/US20140193717A1

## CPC

- H01M 10/0562: Solid materials
- B32B 18/00: Layered products essentially comprising ceramics, e.g. refractory products
- C01G 23/005: {Alkali titanates}
- C01G 25/006: {Compounds containing zirconium, with or without oxygen or hydrogen, and containing two or more other elements}
- C04B 35/01: based on oxide ceramics
- C04B 35/462: based on titanates
- C04B 35/486: Fine ceramics
- C04B 35/62685: {characterised by the order of addition of constituents or additives}
- C04B 35/645: Pressure sintering
- H01B 1/08: oxides
- C01P 2002/34: perovskite-type (ABO3)
- C01P 2006/40: Electric properties
- C04B 2235/3203: Lithium oxide or oxide-forming salts thereof
- C04B 2235/3227: Lanthanum oxide or oxide-forming salts thereof
- C04B 2235/3234: Titanates, not containing zirconia
- C04B 2235/3248: Zirconates or hafnates, e.g. zircon
- C04B 2235/3275: Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite
- C04B 2235/764: Garnet structure A3B2(CO4)3
- C04B 2235/768: Perovskite structure ABO3
- C04B 2235/787: Oriented grains
- C04B 2237/34: Oxidic
- C04B 2237/346: Titania or titanates
- C04B 2237/348: Zirconia, hafnia, zirconates or hafnates
- H01M 2300/0071: Oxides
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; 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 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
- 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})
- 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

According to one embodiment, a solid electrolyte includes a sintered body of ceramic grains. The sintered body includes a crystal plane having an ion conducting path. The crystal plane is oriented in a direction which intersects at least one surface of the solid electrolyte.

## Claims

### Claim 1

A solid electrolyte comprising:
a ceramic-grain sintered body comprising a crystal plane having an ion conducting path, and the crystal plane is oriented in a direction which intersects at least one surface of the solid electrolyte.

### Claim 2 (depends on 1)

The solid electrolyte according to claim 1, wherein
the direction intersects said at least one surface of the solid electrolyte in a range of not more than 30° with respect to a perpendicular of said at least one surface of the solid electrolyte.

### Claim 3 (depends on 1)

The solid electrolyte according to claim 1, wherein
the crystal plane is oriented in a direction which perpendicularly intersects said at least one surface of the solid electrolyte.

### Claim 4 (depends on 1)

The solid electrolyte according to claim 1, wherein
the ceramic-grain sintered body has lithium-ion conduction.

### Claim 5

A battery comprising:
a positive electrode;
a negative electrode; and
a solid electrolyte provided between the positive electrode and the negative electrode, wherein
the solid electrolyte comprises a ceramic-grain sintered body comprising a crystal plane having an ion conducting path, and the crystal plane is oriented in a direction which intersects the positive electrode and the negative electrode.

### Claim 6 (depends on 5)

A battery pack comprising the battery according to claim 5.

### Claim 7

A manufacturing method of solid electrolyte comprising:
applying an alternating electric field in a direction which intersects at least one surface of a solid electrolyte precursor comprising a ceramic-grain sintered body comprising a crystal plane having an ion conducting path, while heating the solid electrolyte precursor, thereby orienting the crystal plane.