Lithium-sulfur battery

A lithium-sulfur battery and electrolyte technology, which is used in lithium batteries, battery electrodes, battery pack components, etc., can solve the problems of low specific capacity, irreversible damage to the sulfur-containing structure of the cathode, and it is difficult to inhibit the diffusion of polysulfides. The effect of improving transformation activity and enriching electronic pathways

Active Publication Date: 2019-04-26
TSINGHUA UNIV +1
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Parasitic reactions caused by polysulfide dissolution seriously affect the cycle performance and Coulombic efficiency of Li-S batteries
However, it is difficult for the existing lithium-sulfur battery separators to inhibit the diffusion of polysulfides, which in turn allows polysulfides to shu

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
  • Lithium-sulfur battery
  • Lithium-sulfur battery
  • Lithium-sulfur battery

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0041] The preparation method of the lithium-sulfur battery diaphragm 100 includes: providing the basic diaphragm 102; laying the carbon nanotube structure skeleton 106 on the surface of the basic diaphragm 102; 2 The suspension of nanoparticles 108 is uniformly dropped on the carbon nanotube structure skeleton 106, and after drying, a plurality of MoP 2 Nanoparticles 108 are attached to the surface of the carbon nanotubes in the carbon nanotube structure skeleton 106 . The multiple MoPs 2 The nanoparticles 108 are located on the surface of the carbon nanotube framework 106 or filled in micropores of the carbon nanotube framework 106 .

[0042] The lithium-sulfur battery 10 provided by the present invention uses a special diaphragm, that is, the lithium-sulfur battery diaphragm 100 . The lithium-sulfur battery separator 100 includes a basic separator 102 and a functional layer 104 . The functional layer 104 includes a carbon nanotube structure skeleton 106 and a plurality o...

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
Areal densityaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a lithium-sulfur battery. The lithium-sulfur battery comprises a cathode, an anode, a lithium-sulfur battery diaphragm and an electrolyte, the electrolyte is located between the cathode and the anode, and the lithium-sulfur battery diaphragm is arranged between the cathode and the anode and located in the electrolyte, wherein the lithium-sulfur battery diaphragm comprisesa base diaphragm and a functional layer, the functional layer is arranged on the surface of the base diaphragm, the functional layer comprises a carbon nano tube structure framework and multiple MoP2nano-particles, the MoP2 nano-particles are arranged on the surface of the carbon nano tube structure framework, micropores of the carbon nano tube structure framework are filled with the MoP2 nano-particles, and the carbon nano tube structure framework is used for supporting the MoP2 nano-particles, and when the lithium-sulfur battery diaphragm is applied to the lithium-sulfur battery, the functional layer directly faces the cathode of the lithium-sulfur battery.

Description

technical field [0001] The invention relates to a lithium-sulfur battery. Background technique [0002] Lithium-sulfur batteries use sulfur as the cathode and metallic lithium as the anode. During discharge, the anode reaction is that lithium loses electrons to become lithium ions, and the cathode reaction is that sulfur reacts with lithium ions and electrons to form sulfide. Due to the occurrence of multiple electron transfer reactions, it has a very high theoretical specific capacity, with a specific capacity as high as 1672mAh / g (milliamp hour / gram). In addition, because sulfur has the characteristics of less environmental pollution, non-toxicity, low cost, and wide source of raw materials, lithium-sulfur batteries have received more and more attention. [0003] Separators are an important component in lithium-sulfur batteries, separating the cathode and anode to avoid internal short circuits while facilitating the transport of free lithium ions between the electrodes. ...

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): H01M2/14H01M2/16H01M10/052H01M10/058B82Y30/00H01M50/403H01M50/417H01M50/431H01M50/446H01M50/449
CPCB82Y30/00H01M10/052H01M10/058H01M50/403H01M50/431H01M50/449H01M50/417H01M4/38Y02E60/10H01M50/44Y02P70/50H01M10/05
Inventor 罗宇峰王佳平范守善
Owner TSINGHUA UNIV
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