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Polymer gel electrolyte containing vinylimidazole segment and its preparation method and application

A vinyl imidazole chain segment, vinyl imidazole technology, applied in the field of polymer gel electrolyte and its preparation, can solve the problems of DSSC battery packaging difficulties, corrosion of the counter electrode and short life, dye desorption, etc., to achieve interfacial charge transmission The effect of fast speed, good contact performance and small interface resistance

Inactive Publication Date: 2015-10-28
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention overcomes the defects of DSSC battery packaging difficulties, solvent volatilization, dye desorption, corrosion of the counter electrode and short life caused by the liquid electrolyte in the prior art, and proposes a polymer gel electrolyte and its preparation method and application

Method used

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  • Polymer gel electrolyte containing vinylimidazole segment and its preparation method and application
  • Polymer gel electrolyte containing vinylimidazole segment and its preparation method and application
  • Polymer gel electrolyte containing vinylimidazole segment and its preparation method and application

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preparation example Construction

[0034] The preparation method of the polymer gel electrolyte containing vinylimidazole chain segment is through poly(vinylimidazole-acrylate) / poly(vinylidene fluoride-hexafluoropropylene) P(VIM-A) / P(VDF-HFP ) blends with redox pair iodide / I 2 The mixing reaction forms a polymer gel electrolyte. Specifically, the preparation method of the present invention comprises the following steps:

[0035] Step 1: Preparation of poly(vinylimidazole-acrylate) / poly(vinylidene fluoride-hexafluoropropylene) blend

[0036] The reaction flask is respectively connected to condensed water and flowing nitrogen, firstly add poly(vinylidene fluoride-hexafluoropropylene) P(VDF-HFP) and solvent to the reaction flask, and dissolve the vinylimidazole monomer and acrylate monomer in the solvent in; dissolve the initiator in the solvent; feed flowing nitrogen into the mixture of poly(vinylidene fluoride-hexafluoropropylene) P(VDF-HFP) and solvent, raise the temperature to 60-70°C, and vinylimidazole mon...

Embodiment 1

[0053] Step 1: Preparation of poly(vinylimidazole-methyl methacrylate) / poly(vinylidene fluoride-hexafluoropropylene) blend

[0054] The reaction flask was respectively connected with condensed water and flowing nitrogen, firstly added poly(vinylidene fluoride-hexafluoropropylene) 6.43g and acetone 10ml in the reaction flask to form a mixture; mixed N-vinylimidazole 0.31g with methyl methacrylate (MMA ) 2.44g was dissolved in 5ml chloroform; 0.0296g initiator azobisisobutyronitrile (AIBN) was dissolved in solvent 2ml chloroform, flowed nitrogen gas to the mixture in the reaction bottle, the temperature was raised to 60°C, and vinylimidazole monomer Slowly drop it into the reaction bottle simultaneously with the acrylate monomer solution and the initiator solvent, and react for 24 hours. In this embodiment, the above-mentioned solvent chloroform can also be toluene, acetonitrile, etc.; the initiator can also be dibenzoyl peroxide, azobisisoheptanonitrile, etc.

[0055] In this ...

Embodiment 2

[0071] Step 1: Preparation of poly(vinylimidazole-methyl methacrylate) / poly(vinylidene fluoride-hexafluoropropylene) blend

[0072] The reaction flask was respectively connected with condensed water and flowing nitrogen. First, 6.04 g of poly(vinylidene fluoride-hexafluoropropylene) and 10 ml of acetone were added to the reaction flask, and 0.55 g of N-vinylimidazole, methacrylate monomer methyl Dissolve 2.07g of ester in 5ml of acetonitrile; dissolve 0.0256g of initiator azobisisobutyronitrile in 2ml of acetonitrile as a solvent, flow nitrogen gas, heat up to 70°C, and mix vinylimidazole monomer, acrylate monomer solution and initiator The solvent was slowly added dropwise into the reaction flask at the same time, and reacted for 12 hours. In this embodiment, the above-mentioned solvent acetonitrile can also be replaced by toluene, chloroform, etc.; the initiator can also be dibenzoyl peroxide, azobisisoheptanonitrile, etc.

[0073] In this example, the mass ratio of monomer...

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Abstract

The invention belongs to the technical field of chemistry and chemical power batteries, and provides a type of vinylimidazole segment-containing polymer gel electrolyte with chemical formula shown as (I), and a preparation method and an application thereof. The polymer gel electrolyte is prepared by mixing poly(vinylimidazole-acrylate) / poly(vinylidene fluoride-hexafluoropropylene)P(VIM-A) / P(VDF-HFP) blends with redox couple iodide / I2. The preparation method has the advantages of being simple in reaction line, mild in operation condition, simple in purification process and high in yield, and the polymer gel electrolyte prepared through the method is easy to package without leakage, is long in service life and can be widely applied in manufacturing of solar batteries, and the like.

Description

technical field [0001] The invention belongs to the technical field of chemistry and energy batteries, and in particular relates to a polymer gel electrolyte containing vinylimidazole chain segments and a preparation method thereof. Background technique [0002] Dye-sensitized solar cells (DSSCs) have attracted extensive attention due to their advantages of easy assembly, low cost, and high efficiency (12.3%). For example, the liquid electrolyte components in U.S. Patent No. 6,479,745 are 0.5mol / L KI, 0.05mol / L I 2 , the solvent is propylene carbonate, and the measured conductivity at room temperature is 7.2mS.cm -1 . However, based on liquid electrolytes and DSSCs, there are disadvantages such as difficult battery packaging, solvent volatilization, dye desorption, corrosion of the counter electrode, and short life, while polymer electrolytes have the advantages of simple packaging, low cost, and stable performance. [0003] As a polymer electrolyte with practical value, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/022H01G9/20
CPCY02E10/542
Inventor 宋春梅赵丹吴敏王永光闫欣张亮汪珍
Owner EAST CHINA NORMAL UNIV