Copolymer solid electrolyte for dye sensitized cell and production method thereof

A dye-sensitized battery and solid electrolyte technology, applied in the field of dye-sensitized solar cells, can solve the problem that inorganic particles cannot be uniformly dispersed

Inactive Publication Date: 2009-07-15
上海拓引数码技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a polymer solid electrolyte for dye-sensitized batteries and its preparation method, which overcomes the disadvantage that inorganic particles cannot be uniformly dispersed, has good thermal stability, and can solve the problem of battery packaging

Method used

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preparation example Construction

[0020] The preparation method of said polymer solid electrolyte of the present invention is to carry out according to the following steps:

[0021] Add quantitative N-N dimethylformamide solution of polymers with hydroxyl groups sequentially into the reaction bottle, seal it, vacuumize it and fill it with nitrogen, repeat three times. Pour the N-N dimethylformamide solution containing the silane coupling agent into the dried reaction bottle; at the same time, start the magnetic stirrer to stir, and stir at room temperature for 8-48 hours, and the reaction ends to obtain the blocked precursor.

[0022] Add metal alkoxy compound to this precursor, and stir at room temperature for 3 to 6 hours. After the mixed solution is stirred and mixed evenly, inject an appropriate amount of dilute hydrochloric acid to hydrolyze the metal alkoxy compound, and generate inorganic materials in situ in the reaction system. sol particles.

[0023] The redox couple (I - / I 3 - ) into the polyme...

Embodiment 1

[0031] Add 0.005 mole of polyethylene glycol and 0.3 mole of N-N dimethylformamide solution into a 250 ml reaction bottle, airtightly vacuumize and fill with nitrogen, and repeat three times. 0.01 mole of isocyanate propyltriethoxysilane is added while stirring, and the reaction time is 8-48 hours to obtain the precursor. Then drop 0.01 mole of ethyl orthosilicate into the reaction flask, mix well at room temperature, and stir for 3-6 hours. 0.5%wt hydrochloric acid solution (2.5 mol / liter) was added dropwise to hydrolyze tetraethyl orthosilicate to form inorganic silica sol particles. Lithium iodide, iodine, and acetonitrile were added, and the concentration of lithium iodide was controlled to be 1.0 mol / liter, and the concentration of iodine was controlled to be 0.1 mol / liter. While stirring, the redox electrolyte is dissolved and mixed evenly. After 12 hours of reaction, the inorganic silica sol particles are gelled, and as the reaction progresses, the sol particles are g...

Embodiment 2

[0033] Add 0.01 mole of polyethylene glycol monomethyl ether and 0.3 mole of N-N dimethylformamide solution into a 250 ml reaction bottle, seal it, vacuumize it and fill it with nitrogen, repeat three times. 0.01 mole of isocyanate propyltriethoxysilane is added while stirring, and the reaction time is 8-48 hours to obtain the precursor. Then drop 0.01 mole of ethyl orthosilicate into the reaction flask, stir for 3-6 hours, and mix evenly in the solution. 0.5%wt hydrochloric acid solution (2.5 mol / liter) was added dropwise to hydrolyze tetraethyl orthosilicate to form inorganic silica sol particles. Add lithium iodide, iodine, and acetonitrile, and control the concentration of lithium iodide to be 3.0 mol / liter, and the concentration of iodine to be 0.3 mol / liter. Continue to stir at room temperature for 12 hours to gel the silica sol particles, dissolve and mix the redox electrolyte at the same time, gradually gel the inorganic sol particles, and obtain a uniform and transpa...

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Abstract

A polymeric compound solid electrolyte for dye sensitization batteries and method for making same, including a polymer matrix, a redox couple, a silicone hydride coupling agent containing isocyanate functional groups and functional groups capable of complexing with inorganic sol particles after hydrolyzing, and a metal alkoxy compound generating inorganic sol particles after hydrolyzing, wherein, the inorganic sol particles are complexed with the polymeric matrix through sol gel in situ compounding. In the inventive polymer solid electrolyte, the inorganic sol particles are uniformly dispersed in the polymer matrix, the polymer solid electrolyte has good heat stability, simple and unique preparation method, no requirement of complicated equipment, capability of effectively resolving the packaging problems of sensitization batteries, and good application foreground in the field of dye sensitization batteries.

Description

technical field [0001] The invention relates to a dye-sensitized solar cell, in particular to a polymer solid electrolyte for a dye-sensitized solar cell and a preparation method thereof. Background technique [0002] According to the different electrolyte states used in dye-sensitized nano-thin film solar cells, they can be divided into three categories: liquid electrolyte batteries, quasi-solid electrolyte batteries and solid electrolyte batteries. Liquid electrolyte system Liquid electrolyte has been widely studied due to its fast diffusion rate, high photoelectric conversion efficiency of batteries, easy design and adjustment of composition, and good permeability to nanoporous membranes. In 1991, M. The research team first made a breakthrough in this electrolyte system, which consists of three components: a redox couple, an organic additive, and an organic solvent. The solute in the electrolyte is mainly composed of redox pairs with good reversibility, generally conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/028H01M14/00
CPCY02E10/542Y02P70/50
Inventor 包健苏杰郑飞璠夏芃范振华范继良
Owner 上海拓引数码技术有限公司
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