Check patentability & draft patents in minutes with Patsnap Eureka AI!

Electrolyte compositions for lithium-sulfur batteries

A lithium-sulfur battery and electrolyte technology, applied in battery electrodes, lithium batteries, organic electrolytes, etc., can solve the problems of improved cycle stability and low cycle stability of lithium-sulfur batteries

Active Publication Date: 2019-04-05
VOLKSWAGEN AG
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cycle stability of the lithium-sulfur battery is not improved by this
[0011] All lithium-sulfur batteries known from the prior art have cycle stability that is too low for use in mobile applications (e.g. motor vehicles)

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
  • Electrolyte compositions for lithium-sulfur batteries
  • Electrolyte compositions for lithium-sulfur batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] figure 1 A schematic structure of a primary cell of a lithium-sulfur battery is shown. The galvanic cell 1 has an anode 3 , a cathode 5 and an electrolyte composition 7 . The anode 3 can be formed as a metal lithium anode, a silicon anode or a silicon-carbon composite anode. The anode 5 has porous carbon 9 as structural element, in which sulfur 11 is stored as active substance. also, figure 1 The chemical and physical processes during discharge of a primary cell in a lithium-sulfur battery are shown. During the discharge, the sulfur molecules 11 are reduced to polysulfides 13 and the lithium intercalated in the anode 3 or present as metal rods is oxidized to lithium ions, thereby forming lithium sulfide and / or lithium polysulfide. At the cathode, long-chain polysulfides 13 are first produced, which are further reduced to short-chain lithium sulfides 15 at the anode 3, such as Li 2 S and Li 2 S 2 . The polysulfides move from the cathode 5 , preferably by diffusio...

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

No PUM Login to View More

Abstract

The present invention relates to an electrolyte composition for lighium-sulfur batteries, wherein, the lighium-sulfur batteries comprise at least one anode and at least one cathode containing sulfide.The electrolyte composition comprises at least one lithium salt, at least one non-aqueous solvent and at least one added polysulfide. According to the invention, the lithium salt is a lithium nitrate. The invention also relates to a lithium sulphur battery comprising the electrolyte compositions and a purpose for enhancing the cycling stability of lithium-sulfur batteries by utilizing the lithiumnitrate and bonding with at least one polysulfide.

Description

[0001] This application is a divisional application based on a Chinese patent application with an application date of February 06, 2015, an application number of 201510063686.3, and an invention title of "Electrolyte Composition for Lithium-Sulfur Batteries". technical field [0002] The present invention relates to an electrolyte composition for a lithium-sulfur battery, a lithium-sulfur battery having the electrolyte composition, and a method for improving the cycle stability of a lithium-sulfur battery using lithium nitrate in combination with at least one polysulfide sexual use. Background technique [0003] Due to growing concerns related to greenhouse gases in the atmosphere and climate change, there is a growing need to replace fossil fuels with alternative energy sources. While some progress has been made in the use of alternative energy sources for stationary applications, it remains a challenge for mobile applications, such as those in motor vehicles. [0004] The...

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): H01M10/056H01M10/0569H01M10/0568
CPCH01M10/052H01M4/38H01M4/386H01M10/0567H01M10/0568Y02E60/10H01M2300/0025
Inventor O.格罗杰
Owner VOLKSWAGEN AG
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com