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A dye sensitized battery electrode, a preparation method thereof and the application of MIL-47 material

A MIL-47, dye-sensitized technology, applied in the field of dye-sensitized battery electrodes and their preparation, can solve the problems of easy corrosion and high electrode cost, and achieve the effects of low cost, simple preparation process and simple process

Active Publication Date: 2019-01-18
DONGGUAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention uses MIL-47 material as the precursor of the DSCs counter electrode material to develop a DSCs counter electrode preparation method with easy-to-obtain raw materials, low cost and simple process, which solves the problem of commercial Pt counter electrodes in existing DSCs High cost, easy to corrode, etc.

Method used

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  • A dye sensitized battery electrode, a preparation method thereof and the application of MIL-47 material
  • A dye sensitized battery electrode, a preparation method thereof and the application of MIL-47 material
  • A dye sensitized battery electrode, a preparation method thereof and the application of MIL-47 material

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Example 1, a MIL-47 metal-organic framework material and its preparation method

[0055] (1) Preparation of MIL-47 frame material, the preparation process is: respectively weigh 1.3g-1.6g of vanadium trichloride and 0.2g-0.4g of 1,4-phthalic acid; Put into 12g~15g deionized water solvent, and stir for 15~30min; transfer the stirred solution to a reaction kettle with polytetrafluoroethylene lining, keep it at 180~200℃ for 4~5 days, then cool to room temperature; (4) use vacuum filtration to remove the liquid, and then wash the obtained solid with 100-200 mL of acetone for 3-5 times to obtain a light green solid.

[0056] (2) Remove the guest molecule (i.e. free 1,4-phthalic acid ligand) in MIL-47. The operation steps are: roast the above-mentioned light green solid at 200-220°C for 1-2 hours, and then bake it at 250-220°C for 1-2 hours. Roasting at 400°C for 10-24 hours, the roasting apparatus is one of tube furnace or muffle furnace, and the MIL-47 metal-organic framew...

Embodiment 2

[0060] Example 2, a MIL-47 metal-organic framework material and its preparation method

[0061] Except that 13g of deionized water described in step (1) of Example 1 was replaced by 13g of ethylene glycol, other processes were consistent with those described in Example 1.

Embodiment 3

[0062] Example 3, a MIL-47 metal-organic framework material and its preparation method

[0063] Except that 13 g of deionized water described in step (1) of Example 1 was replaced with 13 g of ethanol, other processes were consistent with those described in Example 1.

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Abstract

The invention provides a dye sensitized battery electrode, a preparation method thereof and the application of MIL-47 material. The invention adopts the MIL-47 material as the precursor of DSCs counter-electrode material, a preparation method of DSCs counter-electrode with easy availability, low cost and simple process has been developed, which solves the problems of high cost and easy corrosion of commercial Pt counter-electrode in DSCs. As that vanadium-based MOFs material is used as the counter electrode of the DSCs, the invention enrich the material selection range of the counter electrodematerial, achieves the purpose of reducing the cost of the DSCs, provides an experimental foundation for the application of the MOFs material in the energy conversion device, and has a guiding effecton the construction of the high-efficiency DSCs counter electrode. The experiment proves that the MOFs material prepared by the invention as the counter electrode of DSCs has good conductivity, goodcatalytic performance and good stability.

Description

technical field [0001] The invention belongs to the field of new energy materials and device technology development, and specifically relates to a dye-sensitized battery electrode, a preparation method thereof, and an application of MIL-47 materials. Background technique [0002] Dye-sensitized solar cells (DSCs) have a typical sandwich structure, on both sides of the conductive substrate (usually FTO conductive glass) are dye-sensitized photoanode and counter electrode, between the two is the electrolyte. Among them, the main function of the counter electrode is to collect external circuit electrons and catalyze the cyclic regeneration of redox couples in the electrolyte. The commonly used counter electrode material is Pt, but it is expensive, has limited reserves, and is easily corroded by the electrolyte. Therefore, for the above-mentioned problems of commercial Pt, the main solution in this field is to reduce the cost and improve the stability of DSCs, and develop non-...

Claims

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Application Information

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IPC IPC(8): H01G9/20
CPCH01G9/2022Y02E10/542
Inventor 史彦涛李燕茜
Owner DONGGUAN UNIV OF TECH
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