Method for preparing inorganic/organic composite porous lithium battery diaphragm

A lithium battery separator and organic technology, which is applied in the field of preparation of inorganic/organic composite porous lithium battery separators, can solve the problems of low porosity, affect ion conductivity, take a long time, etc., achieve stable storage, improve ion conductivity, fast dispersing effect
CN102222784AInactive Publication Date: 2011-10-19廖勇勀
3 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
廖勇勀
Publication Date
2011-10-19
Estimated Expiration
Not applicable Β· inactive patent
Patent Text Reader

Abstract

The invention discloses a method for preparing inorganic / organic composite porous lithium battery diaphragms by using inorganic particles with high dispersion speed, excellent effect, uniform aperture and high porosity. The method comprises the following steps of: adding the inorganic particles with particle diameter of 0.001 to 10 mu m into an adhesive polymer solution, wherein the content of the inorganic particles is 60 to 95 weight percent based on the weight of the adhesive polymer solution; using ultrasonic wave with frequency of 20-130 KHz and power of 100-1,500 W to act on the adhesive polymer solution added with the inorganic particles so as to uniformly disperse the inorganic particles; and coating the adhesive polymer solution dispersed with the inorganic particles on a porous polymer base material, and drying to obtain the inorganic / organic composite porous lithium battery diaphragms.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a preparation method of an inorganic / organic composite porous lithium battery diaphragm, in particular to a preparation method of an inorganic / organic composite porous lithium battery diaphragm with rapid dispersion of inorganic particles, good effect, uniform pore size and high porosity. Background technique

[0002] With the increasing output of lithium batteries year by year, separators are one of the core components of lithium batteries, and their market demand is also increasing day by day. At present, commercialized lithium ion battery separators are mainly polyolefin microporous membranes and inorganic / organic composite porous membranes.

[0003] Polyolefin microporous membranes mainly include polypropylene (PP), polyethylene (PE) single-layer microporous membranes, and multi-layer microporous membranes composed of polypropylene (PP) and polyethylene (PE). Polyolefin microporous membrane has the characteristics of excell...

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