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

A kind of lithium-ion battery electrolyte and lithium-ion battery

A lithium-ion battery, electrolyte technology, applied in secondary batteries, circuits, electrical components, etc., can solve problems such as insufficient anti-acupuncture performance

Active Publication Date: 2021-12-10
HIGHPOWER TECH HUIZHOU
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of insufficient anti-acupuncture performance in existing lithium-ion batteries, the invention provides a lithium-ion battery electrolyte and a lithium-ion 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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of lithium-ion battery electrolyte and lithium-ion battery
  • A kind of lithium-ion battery electrolyte and lithium-ion battery
  • A kind of lithium-ion battery electrolyte and lithium-ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment is used to illustrate the lithium-ion battery electrolyte, lithium-ion battery and preparation method thereof disclosed in the present invention, including the following steps:

[0053] Electrolyte preparation: Mix EC, DEC, and PC in a mass ratio of 1:1:1 as an organic solvent. Add the additive of mass percent content shown in Example 1 in Table 1 to the organic solvent, after mixing uniformly, add LiPF 6 , to get LiPF 6 Electrolyte with a concentration of 1.1mol / L.

[0054] The production of the positive electrode sheet: the positive electrode active material lithium cobalt oxide (LiCoO 2 ), the conductive agent CNT (CarbonNanotube, carbon nanotube), and the binder polyvinylidene fluoride are fully stirred and mixed in N-methylpyrrolidone solvent at a weight ratio of 97:1.5:1.5 to form a uniform positive electrode slurry. The slurry was coated on the positive electrode current collector Al foil, dried, and cold pressed to obtain the positive electrod...

Embodiment 2～7

[0059] Embodiments 2-7 are used to illustrate the lithium-ion battery electrolyte, lithium-ion battery and preparation method thereof disclosed in the present invention, including most of the operation steps as in Example 1, and the difference is that:

[0060] In the preparation operation of the electrolytic solution: add the additives in the mass percentage content shown in Examples 2-7 in Table 1 to the organic solvent.

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

In order to overcome the problem that the existing lithium ion battery has insufficient anti-needle performance, the present invention provides a lithium ion battery electrolyte, which includes a solvent, a lithium salt, 2-dicyanovinyl-4-vinyl-1,3 -Dioxolane and ethoxy(pentafluoro)cyclotriphosphazenes. Meanwhile, the present invention also discloses a lithium ion battery comprising the above electrolyte. The puncture resistance of the battery can be well improved by the electrolyte provided by the invention.

Description

technical field [0001] The invention belongs to the technical field of secondary batteries, and in particular relates to a lithium-ion battery electrolyte and a lithium-ion battery. Background technique [0002] Lithium-ion batteries are warmly welcomed by consumers because of their significant advantages such as high specific energy, high specific power, long cycle life, and small self-discharge, and have been widely used in mobile communications, digital cameras, video cameras and other 3C electronic products and power batteries middle. With the widespread application of lithium-ion batteries in daily life, various electronic devices put forward higher requirements for the safety performance of lithium-ion batteries. [0003] In the safety test of lithium-ion batteries, anti-needle performance is one of the safety performances. At present, needle-punched fire is one of the main problems encountered by lithium-ion batteries. The reason for the acupuncture fire is that 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 Patents(China)
IPC IPC(8): H01M10/0525H01M10/0567
CPCH01M10/0567H01M10/0525Y02E60/10
Inventor 李枫杜冬冬路晨昊于立娟廖兴群
Owner HIGHPOWER TECH HUIZHOU