High-ionic-conductivity lithium battery diaphragm with self-closing function and preparation method of high-ionic-conductivity lithium battery diaphragm
A technology of ionic conductivity and lithium battery diaphragm, which is applied in the direction of battery pack parts, circuits, electrical components, etc., can solve the problems of low ion conductivity, no self-shutdown function, and low thermal stability of lithium battery diaphragms, etc., to achieve High thermal sensitivity and thermal dimensional stability, high safety and performance, and wide application range
Pending Publication Date: 2021-11-02
SUZHOU UNIV
12 Cites 0 Cited by
AI-Extracted Technical Summary
Problems solved by technology
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 moreAbstract
The invention relates to a high-ionic-conductivity lithium battery diaphragm with a self-closing function and a preparation method of the high-ionic-conductivity lithium battery diaphragm. The method comprises the following steps of: (1) performing vacuum filtration on a conductive inorganic substance solution containing a viscous substance on one side of a micro-nano fiber membrane, and then performing vacuum drying; and (2) sequentially carrying out vacuum suction filtration on the two sides of the membrane obtained in the step (1) by using a ceramic nanoparticle solution containing a viscous substance, and carrying out vacuum drying after each suction filtration to obtain a composite membrane. The prepared lithium battery diaphragm is a composite membrane consisting of a ceramic nano-particle layer, a conductive inorganic substance layer, a micro-nano fiber membrane and a ceramic nano-particle layer in sequence along the thickness direction, the relative positions of the ceramic nanoparticles, the conductive inorganic matter and the micro-nanofiber membrane (made of pure poly(butylene succinate)) in the composite membrane are fixed by the viscous substance, and the porosity of the composite membrane is 50-56%. The high-ionic-conductivity lithium battery diaphragm has relatively high thermal sensitivity and thermal dimensional stability, so that a lithium battery is relatively high in safety and use performance, and the high-ionic-conductivity lithium battery diaphragm has a great application prospect.
Application Domain
Technology Topic
Image
Examples
- Experimental program(8)
- Comparison scheme(4)
Example Embodiment
Example Embodiment
Example Embodiment
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
Property | Measurement | Unit |
The average particle size | 7.0 ~ 40.0 | nm |
The average diameter | 100.0 ~ 200.0 | nm |
The average diameter | 1.5 ~ 3.0 | µm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
Description & Claims & Application Information
We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
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 Similar technology patents
Preparation technology of solid-state lithium ion battery
ActiveCN108832174AImprove ionic conductivityHigh specific capacitySolid electrolytesFinal product manufactureCyclic stabilityAll solid state
Owner:SUZHOU QINGTAO NEW ENERGY TECH CO LTD
A solid electrolyte crystal material and process for preparing crystal film
InactiveCN1464074AImprove ionic conductivityFill vacancyVacuum evaporation coatingSputtering coatingElectrolyteVacuum evaporation
Owner:TSINGHUA UNIV
Alkaline polyarylether ionomer material with microphase separation structure and preparation and application thereof
ActiveCN103012772ARealize microscopic controllabilityImprove ionic conductivitySolid electrolyte fuel cellsIon-exchange membranesIonomer
Owner:SOUTH CHINA UNIV OF TECH
Anion-cation double-doped lithium iron phosphate anode material and preparation method thereof
Owner:上海微纳科技有限公司
Method for preparing solid electrolyte for all-solid-state lithium secondary battery
ActiveUS20180248223A1Improve ionic conductivityFinal product manufactureElectrolytesCoprecipitationAluminium
Owner:TRUE DIGITAL LEADER CO LTD
Classification and recommendation of technical efficacy words
- Improve ionic conductivity
Negative electrode active substance of lithium ionic cell and preparing method thereof, negative electrode and cell
InactiveCN101425580AImprove ionic conductivityWeak electronic conductivityElectrode manufacturing processesSecondary cellsOxideLithium electrode
Owner:BYD CO LTD
High-energy flexible electrode material, preparation method thereof and application in secondary battery
ActiveCN102263257AImprove electronic conductivityImprove ionic conductivityCell electrodesSolventAnodic oxidation
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI