Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Separable and recyclable sulfide type solid electrolyte and application thereof

A solid electrolyte, separation and recovery technology, applied in the field of materials, can solve problems such as increasing difficulty, limiting the output of sulfide solid electrolyte, and increasing costs

Active Publication Date: 2020-10-27
TIANMU LAKE INST OF ADVANCED ENERGY STORAGE TECH CO LTD +2
View PDF8 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In short, the extremely poor air stability of sulfide solid-state electrolytes affects the production, storage, and transportation of sulfide solid-state electrolyte materials, and the production and use of sulfide all-solid-state batteries.
The above-mentioned links need to be isolated from water and oxygen, and are carried out in a vacuum environment and an inert gas atmosphere, which severely limits the production of sulfide solid electrolytes, increases the difficulty of preparation and processing, and limits their large-scale application in all-solid-state lithium batteries. , Increase the cost of production and processing

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
  • Separable and recyclable sulfide type solid electrolyte and application thereof
  • Separable and recyclable sulfide type solid electrolyte and application thereof
  • Separable and recyclable sulfide type solid electrolyte and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This example provides unmodified Li 4 SnS 4 The preparation process of the electrolyte material, which is also used as a comparison benchmark for the material properties of the separable and recoverable sulfide-type solid electrolyte proposed by the present invention in the subsequent embodiments.

[0050] This embodiment selects Li 2 S is Li source, SnS 2 As a Sn source, the air-stable (the water can be removed by heating after absorbing water after exposure to humid air / crystallization water to restore the original crystal structure) sulfide electrolyte Li by solid-phase method 4 SnS 4 ,Specific steps are as follows:

[0051] Will Li 2 S, SnS 2 The raw materials are weighed according to the design ratio and put into the ball milling jar, and the powder mass in each ball milling jar is 1g in total;

[0052] Two ball mill jars with raw materials are sealed, and placed in a planetary ball mill for ball milling for 40 hours;

[0053] After the ball milling is comp...

Embodiment 2

[0057] This example provides As-doped modified Li 4 SnS 4 Preparation process of electrolyte material.

[0058] In this embodiment, the commercially available and cheap Li 2 CO 3 is Li source, CS 2 as S source, SnO 2 is the Sn source, As 2 S 3 As a source of As, synthesize a sulfide electrolyte Li with high air stability (the water can be removed by heating / crystallization water to restore the original crystal structure after exposure to humid air and water absorption) and high ion conductivity 4-x sn 1-x As x S 4 (0<x≤30%), the specific steps are as follows:

[0059] Will Li 2 CO 3 , SnO 2 、As 2 S 3 The raw materials were weighed according to the designed ratio and ground in a mortar for 30 minutes, and the total powder mass was 1 g, which was placed in an alumina crucible.

[0060] Add 50mL-100mL of CS 2 Liquid, add to a scrubber bottle with a capacity of 100mL.

[0061] Put the crucible filled with raw materials into the center of the quartz tube of the tu...

Embodiment 3

[0068] This example provides Sb-doped modified Li 4 SnS 4 Preparation process of electrolyte material.

[0069] In this embodiment, the commercially available and cheap Li 2 CO 3 is Li source, CS 2 as S source, SnO 2 is the Sn source, Sb 2 o 5 As a Sb source, synthesize a sulfide electrolyte Li with high air stability (the water can be removed by heating / crystallization water to restore the original crystal structure after exposure to humid air and water absorption) and high ion conductivity 4-x sn 1-x Sb x S 4 (0<x≤20%), the specific steps are as follows:

[0070] Will Li 2 CO 3 , SnO 2 , Sb 2 o 5 The raw materials were weighed according to the designed ratio and ground in a mortar for 30 minutes, and the total powder mass was 1 g, which was placed in an alumina crucible.

[0071] Add 50mL-100mL of CS 2 Liquid, add to a scrubber bottle with a capacity of 100mL.

[0072] Put the crucible filled with raw materials into the center of the quartz tube of the tube...

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
Ionic conductivityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a separable and recyclable sulfide type solid electrolyte and application thereof. The sulfide-type solid electrolyte is a P-free Sn-based sulfide, the general formula is LiaSnbAcSd, A is an element for doping and substituting Sn and is selected from at least one of As, Sb, Bi, Si, W and Mo, a is greater than 0 and less than or equal to 4, b is greater than or equal to 0 and less than or equal to 1, c is greater than or equal to 0 and less than or equal to 0.3 and d is equal to 4; the sulfide type solid electrolyte is dissolved in water, the sulfide type solid electrolyte absorbing water is heated, the crystal structure of the heated material is the same as the crystal structure of the original sulfide type solid electrolyte material, and the reduction of the ionicconductivity is less than 5%; and the temperature of the heating treatment is 150-700 DEG C.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a separable and recoverable sulfide-type solid electrolyte and its application. Background technique [0002] As a key technology to achieve high safety and high energy density batteries, all-solid-state batteries have attracted extensive attention from academia and industry. All-solid-state batteries use solid-state electrolytes with high thermal stability, density, and mechanical strength as ionic conductors to replace organic electrolytes and separators used in liquid lithium-ion batteries, which can effectively solve the flammability of organic electrolytes and the penetration of negative lithium dendrites. The diaphragm causes problems such as short circuit, which greatly improves the safety of the battery. In recent years, with the emergence of ultrafast solid-state ionic conductors, the long-range migration and transportation of lithium ions in the electrolyte is no lon...

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): H01M10/0562H01M10/052
CPCH01M10/0562H01M10/052H01M2300/0068Y02E60/10
Inventor 吴凡卢普顺李泓
Owner TIANMU LAKE INST OF ADVANCED ENERGY STORAGE TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com