Attapulgite Clay Slurry for Li-ion Batteries

A technology of attapulgite clay and lithium-ion batteries, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of blocking lithium-ion conduction, high binder content, and reduced capacity, so as to reduce slurry costs and energy The effect of reducing power consumption and reducing the probability of hole plugging

Active Publication Date: 2017-02-08
JIANGSU QINGTAO ENERGY TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the spherical shape of the main component of this type of ceramic slurry and the high content of binder, it is easier to block the pores in the original polyolefin separator, thereby blocking the conduction of lithium ions inside the battery, resulting in high internal resistance and reduced capacity.

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
  • Attapulgite Clay Slurry for Li-ion Batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: select the attapulgite clay that the purity of Jiangsu Xuyi produces is 98% to purify fiber powder; The fiber average length in the fiber structure of this product is 0.75 micron, and the average diameter is 0.05 micron; Weigh this purified mineral powder 500.0g, polyethylene 37.5 g of diol was dissolved in 650.0 g of water, and stirred at a high speed for 30 minutes; finally, 62.5 g of aqueous polyvinylidene fluoride was added, and stirred evenly at a slow speed to obtain an attapulgite clay slurry.

Embodiment 2

[0017] Example 2: Select attapulgite clay with a purity of 98% from Xuyi, Jiangsu Province to purify fiber powder; the average fiber length in the fiber structure of this product is 1 micron, and the average diameter is 0.75 micron; 500.0 g of purified mineral powder, polyethylene glycol Dissolve 2 g of alcohol in 745.0 g of water and stir at high speed for 30 minutes; finally add 3 g of water-based polyvinylidene fluoride and stir evenly at a slow speed to obtain attapulgite clay slurry.

Embodiment 3

[0018] Embodiment 3: choose the attapulgite clay that the purity of Jiangsu Xuyi produces is 98% to purify fiber powder; The fiber average length in the fiber structure of this product is 1 micron, and the average diameter is 0.75 micron; Take carboxymethyl cellulose 15.0g, dissolve In 460.0 g of water, weigh 500.0 g of purified mineral powder and add it into the solution, and stir at high speed for 45 minutes; finally add 25 g of styrene-butadiene latex, and stir evenly at a slow speed to obtain attapulgite clay slurry.

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
lengthaaaaaaaaaa
diameteraaaaaaaaaa
melting pointaaaaaaaaaa
Login to view more

Abstract

The invention discloses attapulgite clay slurry for lithium ion batteries. The slurry is applied to coating of ceramic diaphragms of the lithium ion batteries. The attapulgite clay slurry consists of 40-60wt% of attapulgite clay, 0.1-5wt% of a water-based adhesive, 0.1-2wt% of a water-based dispersant and the balance being water. The slurry disclosed by the invention is stable in viscosity and not easy to settle; the attapulgite clay slurry is infiltrative for polymer diaphragms of the lithium ion batteries prepared by adopting a dry process and a wet process, and is significant in cost advantage compared with universal aluminum oxide, zirconium oxide or colloid ceramic diaphragm slurry.

Description

technical field [0001] The invention relates to the field of development and utilization of natural minerals, in particular to an attapulgite clay slurry applied to coating ceramic separators of lithium-ion batteries. Background technique [0002] With the continuous development of productivity, energy issues have become a major issue facing mankind. Lithium-ion secondary batteries, as a key element in new energy sources, have broad economic prospects and market space. In order to ensure the safety of lithium-ion batteries, lithium-ion batteries are equipped with separator layers that separate the positive and negative electrodes. At present, polyolefin porous membranes are widely used as lithium-ion battery separators due to their advantages such as electrochemical inertness, high strength, adjustable pore size, easy thinning, and easy industrialization. However, the melting point of polyolefin porous membrane is low, the melting point of polyethylene PE is 130°C, and 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): H01M4/62
CPCY02E60/10
Inventor 李峥冯玉川杨帆杨伟峰南策文
Owner JIANGSU QINGTAO ENERGY TECH
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