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Nanometer material-modified rubber-gel electrolyte film and preparation method and application

A technology of gel electrolyte and nanomaterials, which is applied in the field of new energy materials, can solve the problems that it is not easy to realize the controllability and repeatability of the porous membrane structure, the difficulty of product post-processing, and the large energy consumption of the preparation process. The effect of outstanding electrolyte capacity, good thermal stability and excellent mechanical properties

Inactive Publication Date: 2019-02-12
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the gel electrolyte membrane prepared by this method still has the following problems: First, the porous membrane skeleton is prepared by immersion precipitation, although this method can obtain a variety of different pore structures, such as honeycomb, finger and sponge Pores, etc., but this method is not easy to achieve structural controllability and structural repeatability of porous membranes; second, the membrane pore size distribution is wide and difficult to adjust
Although its operation is simple and easy, its mechanical strength is not enough, and its temperature resistance is not good; the Chinese patent publication number is CN106129468A, and the publication date is November 16, 2016. The preparation method of the material”, which uses a chemical method to initiate free radical polymerization crosslinking, requires the addition of an additional initiator, and needs to be prepared under heating conditions, resulting in low purity, difficult post-processing of the product, high energy consumption in the preparation process, and poor production process. Disadvantages such as difficult to control

Method used

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  • Nanometer material-modified rubber-gel electrolyte film and preparation method and application
  • Nanometer material-modified rubber-gel electrolyte film and preparation method and application
  • Nanometer material-modified rubber-gel electrolyte film and preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0033] a. Dissolve 0.3 g of polyurethane rubber particles in a mixed solution of 10 mL of N,N-dimethylformamide and 10 mL of acetone to prepare a precursor solution;

[0034] b Under the condition of stirring at 250 r / min, add 0.2 g of titanium dioxide to the precursor solution, continue stirring for 1 hour to obtain a mixed solution, and ultrasonically treat the obtained mixed solution for 1 hour to obtain a uniform mixed solution.

[0035] c Use a film applicator to coat the uniform mixed solution on the glass plate, place the glass plate vertically under gravity for 5 minutes, directly immerse in deionized water, soak until N,N-dimethylformamide and acetone are completely dissolved in water , Take out the film, wash it several times with deionized water, and fully dry to obtain a polyurethane rubber film;

[0036] d The obtained rubber film is immersed in the lithium battery electrolyte, and after fully absorbing the liquid, it is a polyurethane rubber-gel electrolyte film modifie...

Embodiment 2

[0039] a Take 0.3 g of styrene butadiene rubber particles and dissolve them in a mixed solution of 10 mL of N,N-dimethylformamide and 10 mL of acetone to prepare a precursor solution;

[0040] b Under the condition of stirring at 250 r / min, add 0.2 g of titanium dioxide to the precursor solution, continue stirring for 1 hour to obtain a mixed solution, and ultrasonically treat the obtained mixed solution for 1 hour to obtain a uniform mixed solution.

[0041] c Use a film applicator to coat the uniform mixed solution on the glass plate, place the glass plate vertically under gravity for 5 minutes, directly immerse in deionized water, soak until N,N-dimethylformamide and acetone are completely dissolved in water , Take out the film, wash it several times with deionized water, and fully dry to obtain a styrene butadiene rubber film;

[0042] d The obtained rubber film is immersed in the electrolyte of the lithium battery, and after fully absorbing the liquid, it becomes the styrene-but...

Embodiment 3

[0044] a Dissolve 0.3 g of nitrile rubber particles in a mixed solution of 10 mL of N,N-dimethylformamide and 10 mL of acetone to prepare a precursor solution;

[0045] b Under the condition of stirring at 250 r / min, add 0.2 g of titanium dioxide to the precursor solution, continue stirring for 1 hour to obtain a mixed solution, and ultrasonically treat the obtained mixed solution for 1 hour to obtain a uniform mixed solution.

[0046] c Use a film applicator to coat the uniform mixed solution on the glass plate, place the glass plate vertically under gravity for 5 minutes, directly immerse it in deionized water, and soak until the N,N-dimethylformamide and acetone are completely dissolved in water , Take out the film, wash it several times with deionized water, and fully dry to obtain the nitrile rubber film;

[0047] d The obtained rubber film is immersed in the electrolyte of the lithium battery, and after fully absorbing the liquid, it becomes the nitrile rubber-gel electrolyte f...

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Abstract

The invention discloses a preparation method of a nanometer material-modified rubber-gel electrolyte and application of the nanometer material-modified rubber-gel electrolyte, and belongs to the technical field of new energy materials. Nanometer material-modified rubber-gel electrolyte film is prepared from a nanometer material, rubber and an organic electrolyte; the weight percentage of the nanometer material is 10-40wt%, the weight percentage of the rubber is 20-50wt%, and the weight percentage of the organic electrolyte is 3-60wt%. The nanometer material-modified rubber-gel electrolyte is simple in preparation method route, mild in operation condition, environmentally friendly in preparation process, good in stability, good in metal interface compatibility, and large and stable in deformation space, and energy storage device short circuits and dendritic crystals can be effectively prevented; more importantly, due to outstanding organic electrolyte adsorption capability of the nanometer material modified rubber-gel electrolyte, the ionic conductivity and a transference number of ions are well improved.

Description

Technical field [0001] The invention relates to a preparation method and application of a nano material modified rubber-gel electrolyte film, and belongs to the technical field of new energy materials. Background technique [0002] The rapid consumption of traditional energy sources such as chemical oil and natural gas and air pollution have forced the development of green new energy sources to become an important key to solving the problem. In recent years, lithium-ion battery is a new chemical power system that has developed rapidly. Compared with traditional nickel-cadmium or nickel-hydrogen batteries, it has the advantages of high energy density, no memory effect, long cycle life and faster charge and discharge. . It can be widely used in various portable electronic products such as mobile phones, cameras, notebook computers and other products that require rechargeable batteries, and can also be used as power sources for electric vehicles and hybrid vehicles. However, despi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M10/058H01G9/028H01G9/00B82Y30/00
CPCB82Y30/00H01G9/0036H01G9/028H01M10/0565H01M10/058H01M2300/0082H01M2300/0085Y02E60/10Y02P70/50
Inventor 张平蒋运鸿丁燕怀杨忠美邓超华姜勇尹久仁
Owner XIANGTAN UNIV
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