Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fluff Separators for Deposition-Type Slurry Batteries

A slurry battery and deposition-type technology, which is applied in the field of fluff diaphragm, can solve the problems of unsuitable fluidized slurry, insufficient mechanical strength of fluff, and reduce capacity attenuation, so as to improve service life, safety, and mechanical strength , the possible effect of slowing down the occurrence of blockage

Active Publication Date: 2020-12-04
CENT SOUTH UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A lithium-ion battery diaphragm is disclosed in the prior art, and the non-woven diaphragm is provided with a zinc oxide nanowire layer on both sides, and the zinc oxide nanowire layer is deposited on the non-woven film by thermal evaporation physical vapor deposition, and has a finger-like shape. Protruding small intestinal villi-like structure; its main purpose is to capture the active material released during the lithium-ion battery cycle, thereby reducing capacity fading; but it cannot be applied to fluidized slurry, if it is used in a fluidized slurry battery , there are obviously problems such as insufficient mechanical strength of the fluff and excessive frictional resistance.

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
  • Fluff Separators for Deposition-Type Slurry Batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, the present embodiment provides a fluff separator suitable for deposition-type slurry batteries, which includes an isolation layer 1, and a fluff layer 2 arranged on both sides of the isolation layer 1, one layer of the fluff layer 2, One layer of the isolation layer 1 and one layer of the fluff layer 2 are sequentially laminated and bonded together; wherein, the fluff of the fluff layer 2 always faces outward, and the gap between two adjacent layers is not greater than 10 μm. In this embodiment, two adjacent layers are combined into one by vacuum evaporation, electroplating, electroless plating, casting, spin coating, spray coating, hot pressing, screen printing, inkjet printing, bonding or mechanical pressing.

[0022] In this embodiment, compared with the lithium-ion battery separator in the prior art, the velvet separator can effectively reduce the frictional resistance of the slurry during the movement of the chamber, and can greatly redu...

Embodiment 2

[0032] On the basis of Example 1, this example further provides a specific preparation method for the villous diaphragm suitable for deposition-type slurry batteries:

[0033] The fluff layer 2 is set to be woven into a fabric with fluff on one side by using polytetrafluoroethylene fibers (fluorocarbon), wherein the weaving process is divided into three parts: weaving, jacquard, and cut pile. Specifically, the ground warp density is 43.8 root / cm, velvet warp density 32.7 strands / cm, weft density 36 strands / cm, fluff diameter is about 10 μm, fluff length is about 0.8mm, and the thickness of described fluff layer 2 is about 1mm; Described isolation layer 1 is set as The isolation layer 1 supported by a single-layer PE diaphragm is stretched by a dry method, the thickness of the isolation layer 1 is 26 μm, and the porosity of the isolation layer 1 is 50%.

[0034] During production, the combination process adopts a hot-pressing fusion process, one layer of the fluff layer 2, one ...

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a fluff separator suitable for a deposition type slurry battery, which includes an isolation layer and fluff layers arranged on both sides of the isolation layer, a fluff layer, a separation layer and a fluff layer are stacked in sequence and Laminated together; the fluff of the fluff layer is always facing outward, and the gap between two adjacent layers is not greater than 10 μm; compared with the lithium-ion battery separator in the prior art, the fluff separator can effectively reduce the size of the slurry in the cavity. The friction resistance encountered during the movement of the chamber can greatly reduce the wear of the diaphragm caused by the movement of the slurry in the chamber, greatly improving the service life and safety of the device; at the same time, it has a higher mechanical strength than the existing technology. Large improvement, it has better resistance to the extrusion deformation of the diaphragm caused by the movement of the fluidized slurry in the chamber; when the electrolyte is passed through the chamber, the plush diaphragm also has a self-cleaning effect, which can reduce the active slurry The adhesion of the particles in the fluff layer slows down the possibility of clogging.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a fluff diaphragm suitable for deposition type slurry batteries. Background technique [0002] Fluidized slurry battery is a new type of energy storage system that combines the advantages of flow batteries and traditional batteries. The active material used is solid particles, which are mixed with electrolysis to form a slurry. The form in the electrolyte is a suspension, Paste or form deposits. The fluidized slurry battery can realize the replacement of the active material, so the service life of the battery active material is not high. By allocating part of the equipment cost to the maintenance cost, the energy storage cost can be greatly reduced, which is a very ideal Large energy storage device. [0003] A lithium-ion battery diaphragm is disclosed in the prior art, and the non-woven diaphragm is provided with a zinc oxide nanowire layer on both sides, and the zinc oxide ...

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): H01M2/16H01M50/44
CPCH01M50/4295H01M50/44H01M50/411H01M50/449Y02E60/10
Inventor 王志兴刘越潘迪王接喜李新海郭华军胡启阳彭文杰颜果春
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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