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Gel electrolyte of hybrid polymer and preparation method thereof

A gel electrolyte and polymer technology, applied in capacitor electrolytes/absorbers, circuits, photosensitive devices, etc., can solve problems such as battery packaging difficulties, dye desorption, solvent volatilization, etc., and achieve fast interface charge transfer speed and interface resistance. Small, mild operating conditions effect

Inactive Publication Date: 2012-11-21
EAST CHINA NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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

Method used

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  • Gel electrolyte of hybrid polymer and preparation method thereof
  • Gel electrolyte of hybrid polymer and preparation method thereof
  • Gel electrolyte of hybrid polymer and preparation method thereof

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preparation example Construction

[0034] The preparation method of hybrid polymer gel electrolyte is through PA / PEG polymer and redox pair iodide / I 2 The mixed reaction forms the hybrid polymer gel electrolyte of the present invention. The preparation method of the present invention specifically comprises the following steps:

[0035] Step 1: Preparation of PA / PEG polymer

[0036] The reaction bottle is respectively connected with condensed water, mechanical stirring and flowing nitrogen. Firstly, polyethylene glycol (PEG) and solvent are added to the reaction bottle, and acrylate monomers such as methyl methacrylate MMA, methyl acrylate, butyl acrylate BA, hydroxyethyl methacrylate, hydroxypropyl acrylate, fluoroheptyl acrylate, fluoroheptyl methacrylate, MAA methacrylate, and acrylic acid are dissolved in the solvent; dissolve the initiator in the solvent and flow nitrogen , raise the temperature to 50~90°C, slowly add the acrylate monomer solution and initiator solvent into the reaction flask dropwise at ...

Embodiment 1

[0056] Step 1: Preparation of PA / PEG polymer

[0057] The reaction flask is respectively connected with condensed water, mechanical stirring and flowing nitrogen gas. First, 8.58 g of polyethylene glycol (PEG) and 10 g of tetrahydrofuran are added to the reaction flask, and 13 g of acrylate monomers MMA, 1 g of BA, and 6 g of MAA are dissolved in the solvent 25 g; dissolve 0.2 g of the initiator azobisisobutyronitrile in 5 g of tetrahydrofuran as a solvent, flow nitrogen gas, and raise the temperature to 70° C., slowly drop the acrylate monomer solution and the initiator solvent into the reaction flask at the same time, and react 24 h.

[0058] In this embodiment, the mass ratio of monomer MMA:BA:MAA:initiator AIBN:PEG:solvent is 1:0.07692:0.4615:0.01538:0.66:3.077. The molecular formula of polyethylene glycol PEG is HO-(CH 2 CH 2 O) n H, n stands for CH 2 CH 2 The average value of the number of repeating units of O is an integer of 9, and it is a commercially available ...

Embodiment 2

[0079] Step 1: Preparation of PA / PEG polymer

[0080] The reaction flask was respectively connected with condensed water, mechanical stirring and flowing nitrogen. First, 8.58 g of polyethylene glycol (PEG) and 5 g of tetrahydrofuran were added to the reaction flask, and 13 g of acrylate monomers MMA, 1 g of BA, and 6 g of MAA were dissolved in In 12.5 g of solvent; dissolve 0.2 g of initiator azobisisobutyronitrile in 2.5 g of tetrahydrofuran, flow nitrogen gas, raise the temperature to 70°C, slowly drop the acrylate monomer solution and initiator solvent into the reaction flask simultaneously, and react 24 h.

[0081] In this embodiment, the mass ratio of monomer MMA:BA:MAA:initiator AIBN:PEG:solvent is 1:0.07692:0.4615:0.01538:0.66:1.538. The molecular formula of polyethylene glycol PEG is HO-(CH 2 CH 2 O) n H, n stands for CH 2 CH 2 The average value of the number of repeating units of O is an integer of 9, and it is a commercially available reagent grade product.

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Abstract

The invention relates to gel electrolyte of a hybrid polymer and a preparation method thereof, belonging to the technical field of chemicals and energy source cells thereof. The gel electrolyte of the hybrid polymer in the invention is shown as a chemical formula (I). The preparation method provided by the invention comprises the following step of reacting through mixing a hybrid polyacrylate / polyethylene glycol (PA / PEG) polymer and a redox couple iodide / I2 to obtain the gel electrolyte of the hybrid polymer. The gel electrolyte of the hybrid polymer in the invention is easy to package, favorable in electrochemical stability and the like and is expected to be widely applied to the preparation of solar cells. The preparation method provided by the invention has the characteristics of simple route, mild operation condition, simple product extraction step, high yield 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 hybrid polymer gel electrolyte and a preparation method thereof. Background technique [0002] Dye-sensitized solar cell (DSSC) is a new type of solar cell with high efficiency, low cost and no pollution. In 1991, Grötzel first used bipyridyl ruthenium (Ⅱ) complex dyes and nanoporous TiO 2 Dye-sensitized solar cells prepared from thin films achieved a photoelectric conversion efficiency of 7.1%. Since then, DSSC has been continuously studied by many researchers and has made great progress. In U.S. Patent US 6 479 745, the liquid electrolyte components are 0.5 mol / L KI, 0.05 mol / L I 2 , the solvent is propylene carbonate, and the measured conductivity at room temperature is 7.2 mS.cm -1 . However, based on liquid electrolytes and DSSCs, there are disadvantages such as difficult battery packaging, solvent volatilization, dye desorption, cor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/022H01G9/20H01M14/00H01L51/44H01L51/48
CPCY02E10/549
Inventor 宋春梅张亮王永光赵丹唐妙根常飞梁晟斌
Owner EAST CHINA NORMAL UNIV
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