Preparation method and application of organic and inorganic hybrid thin film
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An inorganic and organic technology, applied in the field of preparation and application of organic-inorganic hybrid films, to achieve the effects of improving stability, easy mass production, and good toughness
Active Publication Date: 2019-06-14
UNIV OF SHANGHAI FOR SCI & TECH
View PDF6 Cites 3 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
At present, there is no report on the preparation of organic-inorganic hybrid thin films by this method and its application in metal lithium batteries
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0031] A method for preparing an organic-inorganic hybrid film, the specific preparation steps are as follows:
[0032] Step 1: Mix 10mL of 2mg / mL ethanol solution of graphene oxide with 5mL of 30wt.% ethanol solution of ferric 4-ethylbenzenesulfonate with a mass fraction of 30wt.% and ultrasonically mix for 1h, and the dispersion power is 600w to obtain a mixed solution ;
[0033] Step 2: Heat the mixed solution obtained in Step 1 to 80°C in a polytetrafluoroethylene bottle and dry it for 1 hour to form a film;
[0034] Step 3: Place the film obtained in step 2 in pyrrole steam for 30 minutes to polymerize the pyrrole monomer, then wash it twice in ethanol solution and once in dimethyl carbonate solution to obtain an organic film with a thickness of about 10 μm. Sulfonated polypyrrole covalently modified inorganic graphene oxide membrane, that is, organic-inorganic hybrid thin film.
[0035] from figure 1 It can be seen that the synthesized organic-inorganic hybrid film pr...
Embodiment 2
[0039] A method for preparing an organic-inorganic hybrid film, the specific preparation steps are as follows:
[0040]Step 1: 5 mL of 5 mg / mL ethanol solution of graphene oxide and 5 mL of 50% ethanol solution of ferric 4-ethylbenzenesulfonate with a mass fraction of 50% were ultrasonically mixed for 1 hour, and the dispersion power was 600w to obtain a mixed solution;
[0041] Step 2: Using a glass fiber diaphragm as a filter membrane, the mixed solution in step 1 is filtered by a water pump for 10 hours under reduced pressure to form a thin film;
[0042] Step 3: Place the membrane obtained in step 2 in pyrrole steam for 1.5 hours to polymerize the pyrrole monomer, and then wash it in acetonitrile solution for 3 times to obtain inorganic graphite oxide covalently modified with organic sulfonated polypyrrole with a thickness of about 20 μm Alkene films, that is, organic-inorganic hybrid films.
[0043] Such as Figure 4 As shown, the organic-inorganic hybrid film was place...
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
thickness
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses a preparation method and application of an organic and inorganic hybrid thin film. The preparation method comprises the following steps: step 1, evenly mixing graphene oxide solution and oxidation agent solution in solvent, thereby obtaining mixed solution; step 2, processing the mixed solution obtained in the step 1 into film through suction filtration or drying the mixedsolution into film in a teflon bottle; step 3, adding the film obtained in the step 2 in pyrrole vapor to polymerize pyrrole monomers, after cleaning, obtaining an organic sulfonated polypyrrole covalently modified inorganic graphene oxide film, namely, the organic and inorganic hybrid thin film. The method is simple in technique, low-cost and environmental-friendly, and can realize large-scale production. The obtained sulfonated polypyrrole and graphene oxide hybrid thin film have excellent lithium ion conduction capability, as artificial SEI film, diaphragm modification layer, and so on, canremarkably restrain lithium metal dendritic crystal growth and polysulfide lithium shuttling, and can improve operating stability and safety of a lithium metal battery.
Description
technical field [0001] The invention relates to a preparation method and application of an organic-inorganic hybrid thin film for inhibiting the growth of lithium dendrites in lithium metal batteries and the shuttling effect of polysulfides in lithium-sulfur batteries. Background technique [0002] With the increasing demand for large-capacity energy storage batteries, high specific energy lithium metal batteries have become one of the frontier research hotspots in the field of energy storage today. The specific capacity of lithium metal is about 3860mAh / g, more than 10 times that of graphite negative electrode, and because it contains lithium itself, the positive electrode of the battery can be made of lithium-free materials, such as sulfur / carbon composite materials, etc. Battery material selection range. However, when lithium metal is used as the negative electrode, lithium ions are deposited unevenly on the surface, which induces the growth of dendrite lithium on the su...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more