Solid electrolyte, and electrode mixture, solid electrolyte layer, and solid-state battery using same

A solid electrolyte, solid state battery technology, applied in the field of electrode mixture, can solve problems such as hydrogen sulfide generation

Pending Publication Date: 2022-05-27
MITSUI MINING & SMELTING CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, this document also records the problem that the sulfide solid ele

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Solid electrolyte, and electrode mixture, solid electrolyte layer, and solid-state battery using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] to form Li 5.4 PS 4.4 Cl 0.8 Br 0.8 way of weighing Li 2 S powder, P 2 S 5 Powder, LiCl powder and LiBr powder. These powders were pulverized and mixed using a ball mill to obtain mixed powders. The mixed powder is calcined to obtain a calcined product containing a lithium ion conductive sulfide. Firing was performed using a tubular electric furnace. During the calcination, hydrogen sulfide gas having a purity of 100% was circulated into the electric furnace at 1.0 L / min. The calcination temperature was set to 490°C, and the calcination took 4 hours. As a result of the XRD measurement, it was confirmed that the calcined product had a crystal phase of the arginite-type crystal structure and LiCl 0.5 Br 0.5 crystalline phase.

[0060] After the roasted product was roughly crushed with a mortar and pestle, it was crushed with a hammer crusher, and the crushed product was mixed with a solvent to prepare a slurry with a concentration of 10% by mass. This slurry ...

Embodiment 2

[0062] The calcination temperature, pulverizing apparatus, slurry concentration, and medium diameter in Example 1 were changed to the values ​​shown in Table 1 below. Other than that, it carried out similarly to Example 1, and obtained the solid electrolyte.

Embodiment 3

[0064] The pulverizing apparatus, slurry concentration, and medium diameter in Example 1 were changed to the values ​​shown in Table 1 below. Other than that, it carried out similarly to Example 1, and obtained the solid electrolyte.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Crystallite sizeaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Crystallite sizeaaaaaaaaaa
Login to view more

Abstract

The solid electrolyte according to the present invention contains a compound A that contains a crystal phase having an argyrodite-type crystal structure and that is represented by LiaPSbXc (X is at least one halogen element), and a compound B that contains a crystal phase having an argyrodite-type crystal structure. And a represents a number of 3.0 or more and 6.0 or less. And b represents a number of 3.5 or more and 4.8 or less. And c represents a number of 0.1 or more and 3.0 or less). The compound B is represented by LiX (in the formula, X is defined as above). The crystallite size of the compound B is 25 nm or more. The solid electrolyte is suitable when the BET specific surface area is 14.0 m2/g or less.

Description

technical field [0001] The present invention relates to a solid electrolyte and an electrode mixture using the same, a solid electrolyte layer, and a solid state battery. Background technique [0002] In recent years, solid electrolytes have attracted attention as a substitute for electrolyte solutions used in various liquid-based batteries. A solid-state battery using such a solid electrolyte is expected to be put into practical use as a battery having higher safety and higher energy density than a liquid-based battery using a combustible organic solvent. [0003] As a prior art related to a solid electrolyte, for example, the technology described in Patent Document 1 is known. In this document, there is a description of one of the solid electrolytes used in lithium ion batteries, that is, a sulfide solid electrolyte. As the crystal structure of the sulfide solid electrolyte, various structures are known, and one of them is the arginite-type crystal structure. This docum...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01B1/06H01B1/10H01M4/13H01M4/62H01M6/18H01M10/052H01M10/0562
CPCH01B1/10H01M4/13H01M6/18H01M4/62H01B1/06H01M10/052H01M10/0562C01P2006/12C01P2006/40C01P2002/85C01B17/22H01M10/0525H01M2300/0068H01M2300/008C01B25/14C01P2004/64Y02E60/10
Inventor 星裕二松岛英明
Owner MITSUI MINING & SMELTING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap