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

Preparation of flexible electrode-electrolyte integrated all-solid-state lithium-sulfur battery

A technology of flexible electrodes and lithium-sulfur batteries, which is applied in the direction of non-aqueous electrolyte batteries, electrodes of non-aqueous electrolyte batteries, lithium batteries, etc., can solve problems such as temporary solutions, and achieve the effects of low price, clean raw materials, and increased conductivity

Active Publication Date: 2020-08-04
HARBIN UNIV OF SCI & TECH
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods treat the symptoms but not the root cause, and can only inhibit the dissolution of polysulfides to a certain extent. To fundamentally solve the above problems, the optimal solution is to replace liquid electrolytes with solid electrolytes

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
  • Preparation of flexible electrode-electrolyte integrated all-solid-state lithium-sulfur battery
  • Preparation of flexible electrode-electrolyte integrated all-solid-state lithium-sulfur battery
  • Preparation of flexible electrode-electrolyte integrated all-solid-state lithium-sulfur battery

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0027] Specific Embodiment 1: The preparation of a flexible electrode-electrolyte integrated all-solid-state lithium-sulfur battery in this embodiment is carried out according to the following steps:

[0028] 1. Preparation of active material carrier conductive carbon material

[0029] Zinc oxide and fructose were ground in an agate mortar for 1 hour according to the mass ratio of 4:1-2:1, transferred to a ball mill, and ball milled at 250 r / min for 2 hours to obtain a white powder. Transfer the white powder to a tube furnace, raise the temperature to 700° C. under nitrogen, and keep it warm for 1-3 hours to obtain a black powder. The black powder was washed with 20% HCl to remove ZnO, and the black carbon material was obtained by repeated suction filtration.

[0030] 2. Preparation of conductive carbon-sulfur composites

[0031] Grind the black carbon material and elemental sulfur at a ratio of 3:7 for 1 hour, and raise the temperature to 155°C under airtight conditions to ...

specific Embodiment approach 2

[0042] Embodiment 2: The difference between Embodiment 1 and Embodiment 1 is that the mass ratio of fructose and zinc oxide in Step 1 is 4:1 to 2:1, and the others are the same as Embodiment 1.

specific Embodiment approach 3

[0043] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the mass percentages of polyvinylidene fluoride, polyvinylpyrrolidone and ethylenediaminetetraacetic acid added in step three are respectively 80-97%, 1- 10%, 1-10%, and others are the same as those in Embodiments 1 to 2.

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
diameteraaaaaaaaaa
quality scoreaaaaaaaaaa
current efficiencyaaaaaaaaaa
Login to View More

Abstract

The invention relates to the preparation of a flexible electrode-electrolyte integrated all-solid-state lithium-sulfur battery, in particular to a preparation method of a lithium-sulfur battery electrode-electrolyte material. The preparation method sequentially comprises the following specific steps: 1, preparing an active substance carrier conductive carbon material; 2, preparing a conductive carbon-sulfur composite material; 3, preparing a polymer electrolyte and a binder; 4, preparing an integrated flexible electrode-electrolyte material; and 5, assembling the battery. The solid-state lithium-sulfur battery prepared by the method disclosed by the invention has good cycling stability, the specific discharge capacity after 55 cycles is 573.1 mAh.g<-1>, the capacity retention ratio is 80.89%, and the average coulombic efficiency is 97.24%. According to the invention, the irreversible attenuation of the capacity caused by the shuttle effect of a liquid lithium-sulfur battery is fundamentally solved, the growth of lithium dendrites is inhibited, and various safety problems caused by an electrolyte are effectively solved.

Description

technical field [0001] The invention relates to the preparation of a flexible electrode-electrolyte integrated all-solid-state lithium-sulfur battery, specifically the technical field of solid-state lithium-sulfur batteries. Background technique [0002] Undoubtedly, lithium metal due to its low electrochemical potential and high capacity density (3860mAhg -1 ) and become the most widely used anode material. Currently, efforts are being made to study lithium-ion batteries with high energy density, such as lithium-sulfur batteries, lithium-air batteries, multivalent ion, plasma, and solid-state batteries. Lithium-sulfur batteries have an ultra-high theoretical specific capacity (1675mAhg -1 ) and theoretical energy density (2600Whkg -1 ), which are several times that of traditional lithium-ion batteries. [0003] The commercialization of lithium-sulfur batteries faces many challenges, the most notable of which are the shuttling effect caused by the dissolution of polysulf...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/13H01M4/139H01M4/36H01M4/38H01M4/62H01M10/052H01M10/0565
CPCH01M4/13H01M4/139H01M4/362H01M4/38H01M4/625H01M10/052H01M10/0565Y02E60/10
Inventor 李丽波单宇航
Owner HARBIN UNIV OF SCI & TECH
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