Filamentary positive electrode for solid battery, solid battery, manufacturing method of filamentary positive electrode for solid battery and manufacturing method of solid battery

Patent metadata

Field	Value
Publication number	US-11205781-B2
Application number	US-201916439714-A
Country	US
Kind code	B2
Filing date	Jun 13, 2019
Priority date	Jun 14, 2018
Publication date	Dec 21, 2021
Grant date	Dec 21, 2021

Abstract

The disclosure provides a filamentary positive electrode for solid battery, a solid battery having the filamentary positive electrode for solid battery, a manufacturing method of the filamentary positive electrode for solid battery, and a manufacturing method of the solid battery having the filamentary positive electrode for solid battery. The structure of a positive electrode that constitutes a solid battery is a filamentous structure. A positive electrode active material layer including a positive electrode active material is provided on a surface of a conductive positive electrode filament, and a positive electrode electrolyte layer including an electrolyte is further provided on an outer side of the positive electrode active material layer to form a filamentary positive electrode for solid battery. The filamentary positive electrode for solid battery and a filamentary negative electrode for solid battery, which has a filamentous structure, are laminated to form a solid battery.

First claim

What is claimed is:

1. A solid battery comprising:
a positive electrode having a filament shape, comprising:
a positive electrode active material layer, which comprises a positive electrode active material, on a surface of a conductive positive electrode filament, and
a positive electrode electrolyte layer, which comprises an electrolyte, on an outer side of the positive electrode active material layer; and

a negative electrode having a filament shape,
wherein the negative electrode comprises a conductive negative electrode filament, and
the positive electrode and the negative electrode are laminated alternately,
wherein a distance between the conductive positive electrode filament and the conductive negative electrode filament is 3.4 μm or less,
a thickness of the positive electrode active material layer is in a range of 0.05 μm to 3.4 μm,
a cross section of the positive electrode and a cross section of the negative electrode have a triangular shape, a hexagonal shape or an octagonal shape, and
the negative electrode is formed without a negative electrode active material.

2. The solid battery according to claim 1 , wherein the negative electrode comprises a negative electrode electrolyte layer, which comprises an electrolyte, on an outer side of the negative electrode filament.

3. The solid battery according to claim 2 , wherein a thickness of the positive electrode electrolyte layer is larger than a thickness of the negative electrode electrolyte layer.

4. A solid battery comprising:
a positive electrode having a filament shape, comprising:
a positive electrode active material layer, which comprises a positive electrode active material, on a surface of a conductive positive electrode filament, and
a positive electrode electrolyte layer, which comprises an electrolyte, on an outer side of the positive electrode active material layer;

a negative electrode having a filament shape,
wherein the negative electrode comprises a conductive negative electrode filament, and
the positive electrode and the negative electrode are laminated alternately,
wherein a distance between the conductive positive electrode filament and the conductive negative electrode filament is 3.4 μm or less,
a thickness of the positive electrode active material layer is in a range of 0.05 μm to 3.4 μm,
a cross section of the positive electrode and a cross section of the negative electrode have a triangular shape, a hexagonal shape or an octagonal shape, and
a thickness of a negative electrode electrolyte layer is 0.

5. The solid battery according to claim 4 , wherein the negative electrode for solid battery comprises a negative electrode active material layer, which comprises a negative electrode active material, on a surface of the conductive negative electrode filament.

Assignees

• Honda Motor Co Ltd

Inventors

• Qian Pu
• Tokune Toshio
• Kawai Mitsumoto

Classifications

• H01M10/058 Primary

  Construction or manufacture · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M4/75 Primary

  Wires, rods or strips · CPC title

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M10/0562

  Solid materials · CPC title