Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Carbamate compound for non-aqueous electrolyte and application thereof

A non-aqueous electrolyte, urethane technology, applied in electrochemical generators, circuits, organic chemistry, etc., to achieve strong metal coordination ability, improve oxidation resistance, enhance the effect of dissociation ability

Active Publication Date: 2022-06-10
HUZHOU TEACHERS COLLEGE
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, electrolytes containing carboxylate esters of the same molecular weight have significantly improved low-temperature performance (the viscosity can still be kept small at low temperatures), but the high-temperature stability is poor
In 2014, patent CN 105811003 B disclosed a low-temperature electrolyte based on 50% to 70% chain carboxylate, but its high-temperature performance is not ideal
It is the shortage of carboxylate that limits its use as a solvent in high-voltage lithium-ion batteries

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
  • Carbamate compound for non-aqueous electrolyte and application thereof
  • Carbamate compound for non-aqueous electrolyte and application thereof
  • Carbamate compound for non-aqueous electrolyte and application thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0041] 2C (or 3C) discharge capacity ratio (%) = 2C (or 3C) discharge capacity / 0.5C discharge capacity of the same battery × 100% (2) Battery cycle performance test at room temperature (1A) Constant current-constant voltage charge to 4.5V, put it on hold for 10min, discharge at a constant current of 0.5C (1A) to a cut-off voltage of 3.0V, cycle 200 times, and record the discharge capacity each time.

[0042] Capacity retention after 200 cycles (%) = 200th discharge capacity / 2nd discharge capacity × 100%

[0043] The detailed battery performance of the battery is shown in Table 4 below.

[0044] Table 4: Different electrolytes and corresponding battery performance

[0045] By comparing Example 2 and Comparative Examples 3 and 4, it can be found that the introduction of amino groups into the structure of carbamate can indeed increase the stability of molecules during high-voltage cycling by expanding conjugation and avoiding α-H and other theories. , thereby improving the ...

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
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of lithium batteries, and discloses a carbamate compound for a non-aqueous electrolyte and application of the carbamate compound. The carbamate compound according to the present invention has the following advantages: (i) excellent electrochemical stability, which is not oxidized even at a high voltage; (ii) the conductivity of the electrolyte can be improved, the affinity of molecules to the metal oxide positive electrode material can be enhanced, and the infiltration efficiency of the electrolyte can be further improved; (iii) the contact angle of molecules on the surface of a positive electrode or a negative electrode is reduced, and the wetting effect is improved.

Description

technical field [0001] The invention relates to the field of lithium batteries, in particular to a carbamate compound for a non-aqueous electrolyte and an application thereof. Background technique [0002] As an energy conversion and storage device, lithium-ion secondary batteries have the advantages of high mass and volume energy density, high power density, many charge and discharge times, low self-discharge rate and low environmental pollution. The main power supply of electronic products. As consumers demand more and more power from their devices, so do the demands on the energy density and cost of lithium-ion batteries. Generally, in the industrial field, methods to increase the energy density of lithium-ion batteries mainly include increasing the capacity produced per unit mass of the active material, increasing the proportion of the active material in the electrode, increasing the coating amount of the active material on the electrode unit area, and increasing the ca...

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): C07C271/16H01M10/0525H01M10/0569
CPCC07C271/16H01M10/0569H01M10/0525Y02E60/10
Inventor 臧旭峰夏会玲邹影吴培榕
Owner HUZHOU TEACHERS COLLEGE
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
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