Solid electrolyte sheet and solid state battery

Patent metadata

Field	Value
Publication number	US-11749835-B2
Application number	US-201916673964-A
Country	US
Kind code	B2
Filing date	Nov 5, 2019
Priority date	Nov 6, 2018
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

Provided is a solid electrolyte sheet having a self-supporting property while having a small thickness and flexibility. The solid electrolyte sheet is formed using a support having a specific porosity and a specific thickness. Specifically, the solid electrolyte sheet is formed in which a solid electrolyte is filled in a support having a porosity of 60% or more and 95% or less and a thickness of 5 μm or more and less than 20 μm.

First claim

What is claimed is:

1. A solid electrolyte sheet, comprising:
a support; and
a solid electrolyte being filled in the support,
wherein the support has a porosity of 82% or more and 95% or less,
the support has a thickness of 9.5 μm or more and less than 20 μm, and
the support is formed of a woven fabric, a nonwoven fabric, a heat-resistant fiber, an aramid fiber, or an Al 2 O 3 fiber.

2. The solid electrolyte sheet according to claim 1 , wherein the solid electrolyte contains a lithium element.

3. The solid electrolyte sheet according to claim 2 , wherein the solid electrolyte contains at least one of phosphorus and/or sulfur.

4. A solid state battery, comprising:
a positive electrode layer containing a positive electrode active material;
a negative electrode layer containing a negative electrode active material; and
a solid electrolyte layer located between the positive electrode layer and the negative electrode layer, wherein
the solid electrolyte layer comprises the solid electrolyte sheet according to claim 1 .

Assignees

• Honda Motor Co Ltd

Inventors

• Ogawa Atsushi
• Harada Ushio
• Maeyama Hiroto
• Sukigara Toru
• Chiba Kazuki

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/0562 Primary

  Solid materials · CPC title

• H01M10/056 Primary

  characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/4235

  Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence) · CPC title