Gel polymer electrolyte doped with modified particles, preparation method and application thereof

A technology of gel polymers and modified particles, which is applied in nonlinear optics, instruments, optics, etc., can solve the problems of not giving full play to inorganic-organic compounding, low concentration range of inorganic particle compounding, easy aggregation and segregation, etc. Achieve the effect of enhancing electrochemical performance, good electrochemical performance and mechanical performance, and improving chain segment motion ability

Active Publication Date: 2020-05-26
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Three: With the further development of lithium-ion batteries and small devices, traditional PEO-based polymer electrolytes cannot adapt to this fast pace, so people began to look for more novel and better-performing materials, including structural improvements to the original materials. Modification, etc.
[0006] Chinese patent CN109507840A discloses a preparation method of gel electrolyte, the main component is an electrolyte solution composed of ionic liquid and lithium salt, and then doped with hydrophilic silicon dioxide under the condition of nitrogen gas, the preparation process is complicated
[000

Method used

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  • Gel polymer electrolyte doped with modified particles, preparation method and application thereof
  • Gel polymer electrolyte doped with modified particles, preparation method and application thereof
  • Gel polymer electrolyte doped with modified particles, preparation method and application thereof

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[0054] Example 1

[0055] The dried polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) and lithium perchlorate were dissolved in a mixed solution of PC and acetone in proportion, and magnetically stirred at 50°C. The mass ratio of polyvinylidene fluoride-hexafluoropropylene, lithium perchlorate, PC and acetone is 9:3:20:68.

[0056] Add different concentrations of modified silica SiO to the solution 2 -PMMA-2, the sum of the mass of polyvinylidene fluoride-hexafluoropropylene and lithium perchlorate is 100%, doped modified silica SiO 2 - The content of PMMA-2 is 1%, 2%, 3%, 4%, 5%, 7%, 10%, 15% in sequence, and the stirring is continued for 2 hours to form a viscous sol. Subsequently, the sol was poured into a polytetrafluoroethylene mold, and dried in an oven at 60° C. for 12 hours to obtain a gel polymer electrolyte.

[0057] Modified silica SiO 2 -Modified silicon dioxide SiO in the preparation method of -PMMA-2 and comparative example 2 2 -The preparation method o...

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Abstract

The invention discloses a gel polymer electrolyte doped with modified particles, a preparation method and application thereof in an electrochromic device. The preparation method comprises the following steps of: (1) dissolving a polymer matrix and a lithium salt in a mixed solution of a plasticizer and a solvent, and continuously stirring at 45-55 DEG C, the polymer matrix being one of polyvinylidene fluoride-hexafluoropropylene, polymethyl methacrylate and polyvinylidene fluoride, (2) adding modified inorganic powder into the solution obtained in the step (1), and continuously stirring for 1-3 hours to form viscous sol, the addition amount of the modified inorganic powder being 3wt%-25wt% based on the total mass of the polymer matrix and the lithium salt being 100%, the modified inorganicpowder being silicon dioxide or titanium dioxide, and the surface being coated with a PMMA layer, and (3) pouring the sol obtained in the step (2) into a mold, and drying at 55-65 DEG C to obtain thegel polymer electrolyte doped with the modified particles.

Description

technical field [0001] The invention relates to the technical field of electrochromism, in particular to a gel polymer electrolyte doped with modified particles and its preparation method and application. Background technique [0002] Electrochromic glass is composed of a transparent substrate such as glass and a light-adjusting material layer. Under the action of low voltage (2-5V), it can produce reversible adjustment of light transmittance and reflectance of functional glass. Electrochromic glass has the intelligent function of continuously changing color, adjustable visible light transmittance, and realizing continuous adjustment of transparency and opacity; in terms of use, it also has the characteristics of diversified operation modes and easy control; in terms of functions, it can improve the intensity of natural light, Anti-glare, anti-peeping and other functions, so it is widely used in building doors and windows, automobiles, advertising decoration, meeting rooms a...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08L33/12C08K9/10C08K9/06C08K3/36C08K3/22G02F1/15
CPCC08K3/36C08K9/06C08K9/10G02F1/15C08L27/16
Inventor 刘涌方超炎马晔城韩高荣
Owner ZHEJIANG UNIV
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