High-swelling-degree AFL, preparation method and high-swelling-degree AFL ceramic diaphragm

A technology of ceramic diaphragm and swelling degree, which is applied in the direction of electrical components, non-aqueous electrolyte batteries, circuits, etc., can solve the problems of poor contact, affecting the service life of batteries, and small particle size, so as to reduce the change of size and avoid poor interface contact Effect

Active Publication Date: 2021-06-11
JIANGSU HORIZON NEW ENERGY TECH CO LTD
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Lithium batteries need to be charged and discharged continuously during use, but with the increase in the number of charge and discharge of lithium batteries, especially soft packs and square lithium batteries, lithium batteries are constantly expanding and shrinking, resulting in lithium batteries There are gaps in the pole piece interface, making it poor contact and affecting the service life of the battery
[0003] The conventional solution is to apply a layer of

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
  • High-swelling-degree AFL, preparation method and high-swelling-degree AFL ceramic diaphragm
  • High-swelling-degree AFL, preparation method and high-swelling-degree AFL ceramic diaphragm
  • High-swelling-degree AFL, preparation method and high-swelling-degree AFL ceramic diaphragm

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Further, the present invention also provides a method of preparation of high-only-only AFL, including the step of being subjected to immersion in an electrolytic solution to obtain swelling PMMA; stirring in a PAN solution, resulting PAN-coated PMMA; after drying PMMA, it is highlighted AFL.

[0026] Among them, optionally, the PMMA can, but is not limited to, a spherical PMMA having a molecular weight of from 5 to 200,000.

[0027] Alternatively, the temperature of the pMMA is placed in an electrolyte can be carried out, but is not limited to, 40-50 ° C, and the time can be, but not limited to, 24-72 h, so that PMMA is fully swelling.

[0028] Alternatively, the electrolyte can be of no limitation is a carbonate (PC), vinyl carbonate (EC), diethyl carbonate (DEC) or dimethyl carbonate (DMC).

[0029] Optionally, the temperature of the PN coated PMMA can be, but not limited to, 40-50 ° C to avoid the reduction of the inner layer PMMA.

[0030] Optionally, the molecular weig...

Example Embodiment

[0042] Example 1

[0043] The 20 kg of a molecular weight of 100,000 spherical PMMA was placed in diethyl carbonate for 48 h at 50 ° C to obtain swelling PMMA; stirring the swelling PMMA in a PAN solution of 40% in a PAN solution to obtain a PAN package The coated PMMA; After drying PMMA was dried at 45 ° C, it obtained highlactance AFL.

Example Embodiment

[0044] Example 2

[0045]The 20 kg of a molecular weight of 50,000 spherical PMMA was placed in diethyl carbonate for 72 h at 45 ° C to obtain swelling PMMA; stirring swollen PMMA in a 5 kg solid content of 40% PAN solution to obtain a PAN package The coated PMMA; After drying PMMA was dried at 40 ° C, it obtained high-only-only AFL.

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 belongs to the technical field of diaphragms, and particularly relates to a high-swelling-degree AFL, a preparation method of the high-swelling-degree AFL and a high-swelling-degree AFL ceramic diaphragm. The high-swelling-degree AFL comprises PMMA and PAN, wherein the outer layer of the PMMA is coated with the PAN, and the swelling degree of the PMMA is not lower than 90%. According to the high-swelling-degree AFL, the outer layer of PMMA with the swelling degree not lower than 90% is wrapped with PAN, so that the inner layer PMMA keeps higher swelling degree, and the situation that when the high-swelling-degree AFL is used for a lithium battery, PMMA continues to swell, so that the size is increased, and the performance of the lithium battery is affected, is avoided.

Description

technical field [0001] The invention belongs to the technical field of diaphragms, and in particular relates to a high-swellability AFL, a preparation method, and a high-swellability AFL ceramic diaphragm. Background technique [0002] Lithium batteries need to be charged and discharged continuously during use, but with the increase in the number of charge and discharge of lithium batteries, especially soft packs and square lithium batteries, lithium batteries are constantly expanding and shrinking, resulting in lithium batteries There are gaps in the pole piece interface, making it poor contact and affecting the service life of the battery. [0003] The conventional solution is to apply a layer of adhesive on the separator to form a glue layer on the surface of the separator to bond the positive and negative electrodes, but the swelling degree of the traditional adhesive is generally low and the particle size is small , After entering the interior of the battery, the low-s...

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
IPC IPC(8): H01M50/411H01M50/403H01M10/052
CPCH01M10/052Y02E60/10
Inventor 王成豪李正林翁星星陈朝晖
Owner JIANGSU HORIZON NEW ENERGY TECH CO LTD
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