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Solar cell modified polymer electrolyte and preparation method and application thereof

A technology of solar cells and electrolytes, applied in electrolytic capacitors, circuits, capacitors, etc., can solve the problems of poor contact, small ion diffusion coefficient, and low ion conductivity, and achieve the goal of increasing open circuit voltage, improving efficiency, and reducing interfacial recombination Effect

Inactive Publication Date: 2012-07-04
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polymer electrolyte has low ionic conductivity, small ion diffusion coefficient, and poor contact with the working electrode, so that the photoelectric conversion efficiency of dye-sensitized nanocrystalline solar cells using polymer electrolytes is lower than that of dye-sensitized nanocrystalline solar cells based on liquid electrolytes. Battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: 0.10g acetamide is added to PEO / P(VDF-HFP) / nanometer SiO 2 Composite system.

[0017] Weigh 0.2g of PEO / P(VDF-HFP) with a mass ratio of 2:3 and mix it in 6g of PC and DME organic solvent with a volume ratio of 7:3 at 80°C, keep stirring until completely dissolved, and then add 0.02 g SiO 2 Nanoparticles and absolute ethanol, SiO 2 The nanoparticle anhydrous ethanol solution is formulated according to the following ratio: 0.002g / ml-0.1g / ml, and is heated and stirred to make it evenly mixed. Silica nanoparticles are used as solid plasticizers for polymers. Silica nanoparticles were dissolved with absolute ethanol and added to the mixture.

[0018] Add 0.038g I to the mixed solution 2 With 0.25g KI, it forms a redox pair. Stir at room temperature for 4 to 8 hours until the blend is uniform.

[0019] Add 0.10 g of acetamide to the quasi-solid electrolyte while stirring, and continue stirring for 12 to 24 hours. The ionic conductivity of the quasi-solid...

Embodiment 2

[0021] Embodiment 2: 0.20g acetamide is added to PEO / P(VDF-HFP) / nanometer SiO 2 Composite system.

[0022] Weigh 0.2g of PEO / P(VDF-HFP) with a mass ratio of 2:3 and mix it in 6g of PC and DME organic solvent with a volume ratio of 7:3 at 80°C, keep stirring until completely dissolved, and then add 0.02 g SiO 2 and absolute ethanol, continue to heat and stir to make it evenly mixed.

[0023] Add 0.038g I to the mixed solution 2 With 0.25g KI, it forms a redox pair. Stir at room temperature for 4 to 8 hours until the blend is uniform.

[0024] Add 0.20 g of acetamide to the quasi-solid electrolyte while stirring, and continue stirring for 12 to 24 hours. The ionic conductivity of the quasi-solid electrolyte measured after 0.20g of acetamide modification is: 0.92mS.cm -1 . Add 0.20g of acetamide-modified quasi-solid-state electrolyte system dropwise onto the dye-sensitized nanocrystalline film, place it horizontally in an oven at 70°C and continue baking for 1 to 3 hours, ...

Embodiment 3

[0026] Embodiment 3: 0.25g acetamide is added to PEO / P(VDF-HFP) / nanometer SiO 2 Composite system.

[0027] Weigh 0.2g of PEO / P(VDF-HFP) with a mass ratio of 2:3 and mix it in 6g of PC and DME organic solvent with a volume ratio of 7:3 at 80°C, keep stirring until completely dissolved, and then add 0.02 g SiO 2 and absolute ethanol, continue to heat and stir to make it evenly mixed.

[0028] Add 0.038g I to the mixed solution 2 With 0.25g KI, it forms a redox pair. Stir at room temperature for 4 to 8 hours until the blend is uniform.

[0029]Add 0.25 g of acetamide to the quasi-solid electrolyte while stirring, and continue stirring for 12 to 24 hours. The ionic conductivity of the quasi-solid electrolyte measured after 0.25g of acetamide modification is: 0.27mS.cm -1 . Add 0.25g of acetamide-modified quasi-solid-state electrolyte system dropwise onto the dye-sensitized nanocrystalline film, place it horizontally in an oven at 70°C and continue baking for 1 to 3 hours, c...

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Abstract

The invention discloses solar cell modified polymer electrolyte, which is characterized by comprising the following components: a polyoxyethylene and polytetrafluoroethene hexafluoropropene mixture, silica nano particles, an I2 / KI redox couple in a molar ratio of 1:10, amide and an organic solvent A. The invention also discloses a preparation method and application of the electrolyte. Compared with the prior art, the invention has the advantages that: a composite interface can be effectively reduced; and therefore, open-circuit voltage of the cell is improved, and the efficiency of a dye-sensitized nanocrystalline solar cell employing the polymer electrolyte is improved.

Description

technical field [0001] The invention relates to a solar cell polymer electrolyte, and also relates to a preparation method and application of the electrolyte. Background technique [0002] Although dye-sensitized nanocrystalline solar cells based on liquid electrolytes have achieved high photoelectric conversion efficiency, the liquid electrolytes are prone to leakage and volatilization, which makes it difficult to seal the assembled batteries, and their performance decreases in long-term practical applications and their service life is shortened. . After a lot of practical research, it can be known that in order to solve the problems of liquid electrolytes, solid electrolytes can be used instead of liquid electrolytes or gel electrolytes can be used to develop solid-state or quasi-solid-state solar cells. [0003] The quasi-solid-state electrolyte based on polymer has flexibility in material selection, design and synthesis, and the preparation process is relatively simple....

Claims

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Application Information

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IPC IPC(8): H01G9/035H01G9/20H01M14/00H01L51/44H01L51/48
CPCY02E10/542Y02E10/549
Inventor 诸跃进崔艳峥张京王培卿张雪妮孙强郑君冯姜伟
Owner NINGBO UNIV
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