Electrolyte additive for lithium ion battery

An electrolyte additive, lithium-ion battery technology, applied in the direction of secondary batteries, organic electrolytes, non-aqueous electrolytes, etc., can solve the problems of high flammability, difficulty in preparation and purification, reduce battery cost, battery safety, etc., to eliminate Solidification, improving low-temperature discharge performance, and facilitating rapid migration

Inactive Publication Date: 2018-06-08
广州鸿森材料有限公司
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These additives are not only difficult to prepare and purify, but also have relatively high flammability, which is not conducive to reducing the cost of the battery and improving the safety 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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The electrolyte additive for lithium-ion batteries in this embodiment is made of the following raw materials in parts by weight: 5 parts of mercaptoethylamine hydrochloride, 10 parts of 1,2-difluoroethylene carbonate, 10 parts of ethylene carbonate, fluorine 10 parts of ethylene carbonate, 6 parts of nitroethane, 15 parts of salt additives, 10 parts of stabilizer, 8 parts of flame retardant;

[0020] Wherein, the mass percent that additive accounts for in lithium-ion battery electrolyte is 2%;

[0021] The salt additive is sulfonate; the stabilizer is sodium hydroxypropyl methylcellulose; the flame retardant is tris(2,2,2-trifluoroethyl)phosphite.

Embodiment 2

[0023] The electrolyte additive for lithium-ion batteries in this embodiment is made of the following raw materials in parts by weight: 17 parts of mercaptoethylamine hydrochloride, 20 parts of 1,2-difluoroethylene carbonate, 20 parts of ethylene carbonate, fluorine 20 parts of ethylene carbonate, 18 parts of nitroethane, 25 parts of salt additives, 15 parts of stabilizer, 16 parts of flame retardant;

[0024] Wherein, the mass percent that additive accounts for in lithium-ion battery electrolyte is 10%;

[0025] The salt additive is acetate; the stabilizer is hexamethyldisilazane; the flame retardant is bis(2,2,2-trifluoroethyl)methyl phosphate.

Embodiment 3

[0027] The electrolyte additive for lithium-ion batteries in this embodiment is made of the following raw materials in parts by weight: 11 parts of mercaptoethylamine hydrochloride, 15 parts of 1,2-difluoroethylene carbonate, 15 parts of ethylene carbonate, fluorine 16 parts of ethylene carbonate, 12 parts of nitroethane, 20 parts of salt additives, 13 parts of stabilizer, 12 parts of flame retardant;

[0028] Wherein, the mass percent that additive accounts for in lithium-ion battery electrolyte is 6%;

[0029] The salt additive is nitrate; the stabilizer is N-methyl-2-pyrrolidone; the flame retardant is trichloroalkyl phosphate.

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 invention provides an electrolyte additive for a lithium ion battery and relates to the technical field of lithium ion battery electrolyte additives. The electrolyte additive for the lithium ion battery is prepared from the following raw materials: mercaptoethylamine hydrochloride, 1,2-ethylene difluoride carbonate, vinyl ethyl carbonate, vinyl fluoride carbonate, nitroethane, a salt additive,a stabilizer and a flame retardant. The lithium ion battery electrolyte can form a compact and thin solid electrolyte interface (SEI) film and the pole piece is stabilized; furthermore, impedance isgreatly reduced, the cycling performance of the lithium ion battery is improved, and particularly the cycling performance of the lithium ion battery at high temperature of 40 DEG C is improved. In addition, after the electrolyte is applied to the lithium ion battery, the storage performance of the lithium ion battery at high temperature can be improved.

Description

technical field [0001] The invention relates to the technical field of electrolyte additives for lithium ion batteries, in particular to an electrolyte additive for lithium ion batteries. Background technique [0002] Lithium-ion batteries are widely used in portable electronic product markets such as mobile phones, digital cameras, and personal computers due to their high energy density, high voltage, and long life. "Low-carbon economy" is of great significance. [0003] Lithium-ion battery electrolyte is mainly composed of lithium salt and organic carbonate, known as the blood of the battery. The electrolyte is a bridge connecting the positive and negative electrodes, and plays the role of transporting ions and conducting current inside the battery. Therefore, the properties of the electrolyte have a significant impact on the performance of the battery, and the optimization of the composition and performance of the electrolyte is of great significance to improve the perf...

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): H01M10/0567H01M10/0525
CPCH01M10/0525H01M10/0567H01M2300/0025Y02E60/10
Inventor 刘振添孙斌王英洪魁明
Owner 广州鸿森材料有限公司
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