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

A lithium-sulfur battery

A lithium-sulfur battery and electrolyte technology, applied in the manufacture of lithium batteries, secondary batteries, electrolyte batteries, etc., can solve problems affecting battery cycle performance, loss of active materials, and damage to lithium negative electrodes, improve battery capacity, and prevent corrosion. Destruction and discharge capacity guarantee effect

Active Publication Date: 2022-02-11
ZHUHAI COSMX BATTERY CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The "shuttle effect" will not only cause the loss of active materials and lead to capacity decay, but also cause damage to the lithium negative electrode, thus affecting the cycle performance of the battery

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
  • A lithium-sulfur battery
  • A lithium-sulfur battery
  • A lithium-sulfur battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The structure of the lithium-sulfur battery of this embodiment is as follows image 3 shown.

[0063] The preparation method of the lithium-sulfur battery of this embodiment comprises the following steps:

[0064] 1) Preparation of sulfur-containing cathode

[0065] Ketjen black (EC-600JD, Lion King of Japan) and sulfur were mixed and melted and cooled to obtain a carbon-sulfur compound with a sulfur content of 87 wt%;

[0066] Mix the carbon-sulfur compound with deionized water, add SUPER P, sodium carboxymethyl cellulose (CMC), and styrene-butadiene rubber (SBR), and stir to obtain a functional layer slurry; wherein, the mass of the carbon-sulfur compound The fraction is 92%, the mass fraction of SUPER P is 3%, the mass fraction of sodium carboxymethyl cellulose is 2%, and the mass fraction of styrene-butadiene rubber is 3%;

[0067] The above-mentioned functional layer slurry is coated on the functional surface of aluminum foil with a thickness of 15 microns, so t...

Embodiment 2

[0078] Compared with the lithium-sulfur battery in Example 1, the difference between the lithium-sulfur battery in this example and the lithium-sulfur battery in Example 1 is that the composition of the first electrolyte is Li 2 S 8 :DOL:DME mass ratio is 25:45:30.

Embodiment 3

[0080] Compared with the lithium-sulfur battery in Example 1, the difference between the lithium-sulfur battery in this example and the lithium-sulfur battery in Example 1 is that the composition of the first electrolyte is Li 2 S 8 :DOL:DME mass ratio is 45:25:30.

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
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
widthaaaaaaaaaa
Login to View More

Abstract

The invention provides a lithium-sulfur battery, comprising a sulfur-containing positive electrode, a polymer electrolyte, and a lithium-containing negative electrode stacked in sequence; there is a first electrolyte between the sulfur-containing positive electrode and the polymer electrolyte, and the polymer electrolyte There is a second electrolyte between the negative electrode containing lithium; wherein, the first electrolyte includes lithium polysulfide, and the second electrolyte includes lithium nitrate. The lithium-sulfur battery has excellent safety performance and cycle performance.

Description

technical field [0001] The invention relates to a lithium-sulfur battery and belongs to the technical field of lithium batteries. Background technique [0002] With the continuous progress of society, the demand and utilization rate of human beings for energy continue to increase, especially in recent years, the large-scale development of digital, power, military aerospace and communication equipment and other fields has led to the current commonly used drive energy-battery system is still difficult Meet the requirements of the current stage, especially the requirements for high battery capacity. [0003] The concept of lithium-sulfur batteries has been proposed as early as the 1960s. Its theoretical capacity is 1675mAh / g, which is nearly 10 times the specific capacity of the most commonly used lithium-ion batteries at this stage. Due to its high specific capacity and high energy density Therefore, it is considered to be the mainstream development direction of the next gene...

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 Patents(China)
IPC IPC(8): H01M10/058H01M10/052H01M10/056
CPCH01M10/052H01M10/058H01M10/056H01M2300/0085Y02E60/10Y02P70/50
Inventor 潘跃德伍鹏李素丽张亮李俊义徐延铭
Owner ZHUHAI COSMX BATTERY 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