A kind of in situ implanted polymer particle solid electrolyte and preparation method thereof

A solid electrolyte and polymer technology, applied in solid electrolyte, electrolyte battery manufacturing, non-aqueous electrolyte and other directions, to achieve the effect of less difficulty in industrialization, excellent performance and huge economic benefits

Active Publication Date: 2020-06-30
SINOCAT ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of some safety problems faced by the current lithium battery electrolyte, the purpose of the present invention is to provide an in-situ implanted polymer particle solid electrolyte and a preparation method thereof

Method used

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  • A kind of in situ implanted polymer particle solid electrolyte and preparation method thereof
  • A kind of in situ implanted polymer particle solid electrolyte and preparation method thereof
  • A kind of in situ implanted polymer particle solid electrolyte and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A preparation method for in-situ implantation of polymer particle solid electrolyte, comprising the following steps:

[0036] (1) In an argon glove box, 25 parts of lithium salt bistrifluoromethanesulfonimide lithium soluble in polyethylene oxide and 60 parts of polyethylene oxide are added to the container, and anhydrous acetonitrile is added to stir and dissolve to obtain transparent or Translucent solution; solvent anhydrous acetonitrile water content less than 40PPm, oxygen less than 50ppm. The total weight of lithium salt and polyethylene oxide added: anhydrous acetonitrile = 1 g: 50 mL. The stirring temperature of polyethylene oxide and lithium salt in acetonitrile is 22 degrees centigrade, and the process of adding lithium salt controls the water content to be less than 40 ppm.

[0037] (2) Add 5 parts of acrylamide, 0.01 part of crosslinking agent, and 0.01 part of initiator to the solution; the crosslinking agent is NN-methylenebisacrylamide, and the initiator...

Embodiment 2

[0041] A preparation method for in-situ implantation of polymer particle solid electrolyte, comprising the following steps:

[0042] (1) In a nitrogen glove box, 30 parts of lithium trifluoromethanesulfonimide lithium soluble in polyethylene oxide and 65 parts of polyethylene oxide are added to the container, and anhydrous acetonitrile is added to stir and dissolve to obtain transparent or translucent Solution; solvent anhydrous acetonitrile water content is less than 40PPm, oxygen is less than 50ppm. The total weight of the added lithium salt and polyethylene oxide: anhydrous acetonitrile = 1 g: 60 mL. The stirring temperature of polyethylene oxide and lithium salt in acetonitrile is 24 degrees Celsius, and the process of adding lithium salt controls the water content to be less than 40ppm.

[0043] (2) Add 10 parts of acrylamide, 0.03 parts of cross-linking agent, and 0.03 parts of initiator to the solution; the cross-linking agent is divinylbenzene, dicumyl peroxide, and t...

Embodiment 3

[0047] A preparation method for in-situ implantation of polymer particle solid electrolyte, comprising the following steps:

[0048] (1) In an argon or nitrogen glove box, add 35 parts of lithium salt soluble in polyethylene oxide and 70 parts of polyethylene oxide into the container, add anhydrous acetonitrile and stir to dissolve to obtain a transparent or translucent solution; the solvent is anhydrous The water content in acetonitrile is less than 40ppm, and the oxygen content is less than 50ppm. The lithium salt is lithium bistrifluoromethanesulfonylimide and lithium trifluoromethanesulfonylimide. The total weight of the added lithium salt and polyethylene oxide: anhydrous acetonitrile = 1 g: 70 mL. The stirring temperature of polyethylene oxide and lithium salt in acetonitrile is 26 degrees centigrade, and the process of adding lithium salt controls the moisture content to less than 40 ppm.

[0049] (2) Add 20 parts of acrylamide, 0.05 parts of a crosslinking agent, and...

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Abstract

The invention provides an in-situ implanted polymer particle solid electrolyte and a preparation method thereof. Stir and dissolve water with acetonitrile to obtain a transparent or translucent solution; add acrylamide, crosslinking agent, and initiator to the solution; continue to stir until the solution is evenly mixed again, pour it into a mold, and initiate polymerization at a wavelength of 365 nanometers of ultraviolet rays. After the polymerization is complete Stand still, and after the solvent acetonitrile is completely volatilized, a micron-level thick solid electrolyte film is obtained; the in-situ implanted polymer particle solid electrolyte prepared by the present invention has excellent performance, has high ion conductivity at room temperature, and has relatively high Good mechanical properties and excellent processability, the invention implants polymer particles in situ, the preparation method is simple, the preparation cost is low, the raw materials used are all from industrial products, and it is expected to realize mass industrial production.

Description

technical field [0001] The invention belongs to the technical field of solid-state lithium battery electrolytes, in particular to an in-situ implanted polymer particle solid electrolyte and a preparation method thereof. Background technique [0002] At present, the most used battery products in people's daily life are lithium-ion batteries, including mobile phone batteries, laptop batteries, digital camera batteries, drone batteries and automotive power batteries. The types of batteries include lithium iron phosphate batteries, lithium titanate batteries Batteries and ternary lithium-ion batteries, etc., the electrolytes used in these commercial batteries are all liquid electrolytes. Therefore, there are some unavoidable shortcomings of the liquid electrolyte, such as a little squeeze, and the liquid may leak after a collision. Since the electrolyte is an organic reagent, it is very easy to burn when it comes into contact with a fire source, and even an explosion accident oc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/058H01M10/0565
CPCH01M10/0565H01M10/058H01M2300/0082Y02E60/10Y02P70/50
Inventor 吴孟强陈治徐自强陈诚冯婷婷李文磊郭豪单双
Owner SINOCAT ENVIRONMENTAL TECH
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