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A kind of preparation method of gel electrolyte

A technology of gel electrolyte and electrolyte, applied in solid electrolyte, non-aqueous electrolyte, circuit, etc., can solve the problem of little research on direct writing slurry of gel electrolyte, and achieve controllable thickness and excellent electrical properties Effect

Active Publication Date: 2021-12-21
GUIZHOU MEILING POWER SUPPLY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the positive and negative direct writing pastes are widely studied, and there is little research on the direct writing pastes for gel electrolytes.

Method used

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  • A kind of preparation method of gel electrolyte
  • A kind of preparation method of gel electrolyte
  • A kind of preparation method of gel electrolyte

Examples

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Effect test

Embodiment 1

[0038] A method for preparing a gel electrolyte, S1. Preparation of slurry: Weigh 5g of vinylidene fluoride-hexafluoropropylene (PVDF-HFC) and dissolve it in 75g of acetone, and stir for 40min with a vertical mixer at 25°C until it is uniformly dispersed , showing a transparent viscous state; then weigh 20g of propylene carbonate (PC) and dissolve it in the above dispersion liquid, and use a vertical mixer to stir for 40min at 25°C to obtain a uniformly dispersed gel electrolyte slurry with a viscosity of 10-2000Pa·s material.

[0039] S2, 3D printing base film: fill the obtained gel electrolyte slurry into the feeding cylinder of the 3D printer, and extrude it with a 100 μm nozzle. Before forming, the parameters of the 3D printer are set as follows: extrusion speed 2 μL / min, platform movement The speed is 600mm / min, the extrusion width is 100μm, the initial layer thickness is 95μm, the printing layer thickness is 100μm, the printing spacing is 90μm, the filling ratio is 35%, ...

Embodiment 2

[0042] A method for preparing a gel electrolyte, S1. Preparation of slurry: Weigh 10 g of polymethyl methacrylate and dissolve it in 65 g of acetone, and stir for 500 min with a vertical mixer at a stirring speed of 150 r / min until the dispersion is uniform and appears Transparent and viscous; then weigh 25g of ethylene carbonate (EC) and dissolve it in the above dispersion, stir for 55min with a vertical mixer at a stirring speed of 150r / min, and obtain a uniformly dispersed gel electrolyte with a viscosity of 10-2000Pa·s slurry.

[0043]S2, 3D printing base film: fill the obtained gel electrolyte slurry into the feeding cylinder of the 3D printer, and extrude it with a 120 μm nozzle. Before forming, the parameters of the 3D printer are set as follows: extrusion speed 3 μL / min, platform movement The speed is 1000mm / min, the extrusion width is 120μm, the initial layer thickness is 110μm, the printing layer thickness is 120μm, the printing spacing is 100μm, the filling ratio is...

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Abstract

This application relates to a method for preparing a gel electrolyte in the field of chemical energy storage batteries. The gel polymer is mixed and stirred with a solvent to form a transparent gel, and then stirred with a plasticizer to obtain a gel electrolyte slurry suitable for 3D printing. , and then 3D print the slurry to obtain a base film of a specific shape, dry the base film and soak it in the electrolyte in the glove box to obtain a gel electrolyte. The gel electrolyte prepared by the invention can form a battery diaphragm of a specific shape, and can be used in the development of special-shaped batteries.

Description

technical field [0001] The invention relates to the technical field of chemical energy storage batteries, in particular to a preparation method of a gel electrolyte. Background technique [0002] In recent years, with the continuous development and progress of science and technology, along with the rapid development of various portable electronic devices, electric vehicles and military weapons and equipment, the requirements for chemical power sources have become higher and higher, and chemical power sources are required to have higher energy density. In weaponry, the space reserved for power supply is generally irregular. If lithium-ion batteries (usually rectangular and cylindrical) commonly used in the current electronic field are used, the space utilization rate is not high, resulting in low specific energy of the battery system. Improving the space utilization rate is an important means to increase the specific energy of the battery system, so the technology of special...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0565H01M10/0525H01M2300/0082Y02E60/10
Inventor 唐月娇张亮李坚鲁中良苏纪宏胡锦飞石斌陈晓涛唐立成
Owner GUIZHOU MEILING POWER SUPPLY CO LTD