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Poly(vinyl imidazole-acrylate-acrylic acid)polyethylene glycol quasi solid electrolyte and preparation method and application thereof

A vinyl imidazole and acrylate technology, applied in the field of poly/polyethylene glycol quasi-solid electrolyte and its preparation, can solve the problems of DSSC battery packaging difficulties, corrosion of counter electrodes, short life, dye desorption, etc., and achieve electrochemical Good stability, improved electrical conductivity, and easy packaging

Inactive Publication Date: 2013-02-13
EAST CHINA NORMAL UNIV +1
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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 poly(vinylimidazole-acrylate-acrylic acid) / poly Ethylene glycol quasi-solid electrolyte and its preparation method and application

Method used

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  • Poly(vinyl imidazole-acrylate-acrylic acid)polyethylene glycol quasi solid electrolyte and preparation method and application thereof
  • Poly(vinyl imidazole-acrylate-acrylic acid)polyethylene glycol quasi solid electrolyte and preparation method and application thereof
  • Poly(vinyl imidazole-acrylate-acrylic acid)polyethylene glycol quasi solid electrolyte and preparation method and application thereof

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preparation example Construction

[0041] The preparation method of poly(vinylimidazole-acrylate-acrylic acid) / polyethylene glycol P(VIM-A-AA) / PEG blend gel electrolyte is through P(VIM-A-AA) / PEG blending And redox p-iodide / I 2 The mixing reaction forms the quasi-solid electrolyte of the present invention. Specifically, the preparation method of the present invention includes the following steps:

[0042] Step 1: Preparation of poly(vinylimidazole-acrylate-acrylic acid) / polyethylene glycol blend

[0043] The reaction flask is respectively connected with condensed water and flowing nitrogen. First, polyethylene glycol and solvent are added to the reaction flask, and the vinyl imidazole monomer and acrylic ester monomers such as methyl methacrylate (MMA), methyl acrylate and butyl acrylate are added. Ester (BA), hydroxyethyl methacrylate, hydroxypropyl acrylate, fluoroheptyl acrylate, fluoroheptyl methacrylate, acrylic monomers such as methacrylic acid (MAA) or acrylic acid are dissolved in a solvent; The initiator ...

Embodiment 1

[0065] Step 1: Preparation of poly(vinylimidazole-methyl methacrylate-methacrylic acid) / polyethylene glycol blend

[0066] The reaction flask was connected with condensed water and flowing nitrogen. Firstly, 3.00g polyethylene glycol (PEG400) and 3ml toluene were added to the reaction flask, 2.08g vinyl imidazole, 4.53g acrylic ester monomer methyl methacrylate, acrylic acid The monomer methacrylic acid 0.35g is dissolved in toluene 3ml; the initiator azobisisobutyronitrile 0.11g is dissolved in the solvent 1ml toluene, the flowing nitrogen is passed, the temperature is raised to 70℃, the vinyl imidazole monomer and acrylate monomer The solution and the initiator solvent were slowly dropped into the reaction flask at the same time, and reacted for 12 hours. In this embodiment, the solvent toluene can be replaced with chloroform, tetrahydrofuran, etc.

[0067] In this embodiment, the mass ratio of monomer vinylimidazole: methyl methacrylate: methacrylic acid: initiator azobisisobut...

Embodiment 2

[0085] Step 1: Preparation of poly(vinylimidazole-methyl methacrylate) / polyethylene glycol blend

[0086] In this example, the content of acrylic monomer is zero, so that the properties of the polymer electrolyte when the content of acrylic monomer is zero are investigated.

[0087] The reaction flask was connected with condensed water and flowing nitrogen. First, 6.3g polyethylene glycol (PEG20000) and 3ml chloroform were added to the reaction flask, and 0.3g vinyl imidazole and 2.4g methyl methacrylate, an acrylic monomer, were dissolved in the reaction flask. In 2ml of chloroform; dissolve 0.0286g of the initiator azobisisobutyronitrile in 1ml of chloroform, flow nitrogen, and increase the temperature to 65℃. Add vinylimidazole monomer, acrylate monomer solution and initiator solvent simultaneously and slowly dropwise In the reaction flask, react for 20 hours. In this embodiment, the solvent chloroform can be replaced with toluene, tetrahydrofuran, etc.

[0088] In this embodime...

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Abstract

The invention belongs to the technical field of chemistry and energy batteries thereof, and provides a poly(vinyl imidazole-acrylate-acrylic acid)polyethylene glycol quasi solid electrolyte shown by the chemical formula (I) and a preparation method and an application thereof. The quasi solid electrolyte is prepared by mixing a poly(vinyl imidazole-acrylate-acrylic acid)polyethylene glycol (P(VIM-A-AA)PEG) blend with redox couple iodide / I2. The preparation method has the advantages of simple route and mild operation conditions, and the product has simple purification steps, high yield, easiness in packaging, no leakage and long service and can be widely applied to solar batteries and the like.

Description

Technical field [0001] The invention belongs to the technical field of chemistry and its energy battery, and specifically relates to a poly(vinylimidazole-acrylate-acrylic acid) / polyethylene glycol quasi-solid electrolyte and a preparation method and application thereof. Background technique [0002] Dye-sensitized solar cells (DSSC) have received widespread attention due to their easy assembly, low cost, and high efficiency (12.3%). The composition of the liquid electrolyte in the US patent US 6 479 745 is 0.5 mol / L KI, 0.05 mol / L I 2 , The solvent is propylene carbonate, the conductivity measured at room temperature is 7.2mS.cm -1 . However, based on liquid electrolyte and DSSC, there are disadvantages such as difficulty in battery packaging, solvent volatilization, dye desorption, corrosion of the counter electrode, and short life. The polymer electrolyte has the advantages of simple packaging, low cost, and stable performance, which has attracted great interest from researche...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/022H01G9/20
Inventor 赵丹宋春梅韩会景王永光汪珍胡芳芳
Owner EAST CHINA NORMAL UNIV
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