Unlock instant, AI-driven research and patent intelligence for your innovation.

Fire-resistant lithium-ion battery electrolyte

A lithium-ion battery, electrolyte technology, applied in secondary batteries, circuits, electrical components and other directions, can solve the problem of electrolyte flammability and other issues

Inactive Publication Date: 2014-03-12
山西师范大学
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the traditional organic electrolyte is widely used, but unstable factors such as flammability and easy decomposition of the electrolyte limit its further development.

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
  • Fire-resistant lithium-ion battery electrolyte
  • Fire-resistant lithium-ion battery electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: prepare electrolyte solution in the glove box, EC:DEC=3:7 (wt%) altogether 500 grams, each gets 100 grams and subpackages in the polytetrafluoroethylene bottle, writes down respectively as A, B, C, D, E. in

[0018] A bottle: add 40% (wt%) N 1124 - TFSI and 16.73 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

[0019] B bottle: add 50% (wt%) N 1124 - TFSI and 20.07 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

[0020] C bottle: add 60% (wt%) N 1124 - TFSI and 25.09 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

[0021] D bottle: add 70% (wt%) N 1124 - TFSI and 33.45 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

[0022] E bottle: add 80% (wt%) N 1124 - TFSI and 50.18 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

Embodiment 2

[0023] Embodiment 2: prepare electrolyte solution in the glove box, EC:DEC=4:6 (wt%) totally 500 grams, each gets 100 grams and subpackages in the polytetrafluoroethylene bottle, writes down respectively as A, B, C, D, E. in

[0024] A bottle: add 40% (wt%) N 1124 - TFSI and 16.73 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

[0025] B bottle: add 50% (wt%) N 1124 - TFSI and 20.07 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

[0026] C bottle: add 60% (wt%) N 1124 - TFSI and 25.09 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

[0027] D bottle: add 70% (wt%) N 1124 - TFSI and 33.45 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

[0028]E bottle: add 80% (wt%) N 1124 - TFSI and 50.18 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

Embodiment 3

[0029] Embodiment 3: prepare electrolyte solution in the glove box, EC:DEC=5:5 (wt%) altogether 500 grams, each gets 100 grams and subpackages in the polytetrafluoroethylene bottle, writes down respectively as A, B, C, D, E. in

[0030] A bottle: add 40% (wt%) N 1124 - TFSI and 16.73 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

[0031] B bottle: add 50% (wt%) N 1124 - TFSI and 20.07 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

[0032] C bottle: add 60% (wt%) N 1124 - TFSI and 25.09 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

[0033] D bottle: add 70% (wt%) N 1124 - TFSI and 33.45 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

[0034] E bottle: add 80% (wt%) N 1124 - TFSI and 50.18 g LiPF 6 , so that the lithium salt concentration is 0.6mol / kg.

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 a safe lithium-ion battery electrolyte which comprises an electrolyte salt, an organic solvent and a catenarian quaternary ammonium salt ionic liquid. According to the invention, through selecting a specific type of organic solvent and ionic liquid which are mixed in different proportions, the volatility of the electrolyte can be reduced, and a battery filled with the electrolyte does not generate smoke and fire when being overcharged, so that the fire resistance and use security of the electrolyte can be improved effectively.

Description

technical field [0001] The invention relates to the field of lithium ion battery electrolyte, and relates to the use of a novel ionic liquid. Background technique [0002] Lithium-ion battery electrolyte is an important part of the battery, and it plays the role of transferring charge between the positive and negative electrodes in the battery. It plays a vital role in the specific capacity, operating temperature range, cycle efficiency and safety performance of the battery. Since most of the traditional organic electrolytes are volatile and flammable carbonate organic solvents, the safety of the battery is affected. Ionic liquids refer to substances that are entirely composed of ions and appear liquid at room temperature, also known as room temperature ionic liquids or room temperature molten salts. It has the following physical and chemical properties: low vapor pressure, non-volatile, non-flammable, high thermal stability, high electrical conductivity, and wide electroc...

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): H01M10/0569H01M10/0568H01M10/0525
CPCY02E60/122H01M10/0525H01M10/0567H01M10/0569Y02E60/10
Inventor 高昆李姝
Owner 山西师范大学