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A dye-sensitized battery electrode, its preparation method and application of mil-47 material

A MIL-47, 5.MIL-47 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: 2021-04-13
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 develops a DSCs counter electrode preparation method with easy-to-obtain raw materials, low cost and simple process by using MIL-47 material as the precursor of DSCs counter electrode material, which solves the problem of commercial Pt counter electrodes in existing DSCs High cost, easy to corrode and other issues

Method used

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  • A dye-sensitized battery electrode, its preparation method and application of mil-47 material
  • A dye-sensitized battery electrode, its preparation method and application of mil-47 material
  • A dye-sensitized battery electrode, its preparation method and 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. Roast at 400°C for 10-24 h, and the calcining equipment is one of tube furnace or muffle furnace to obtain MIL-47 metal-organic framewo...

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, its preparation method and the application of MIL-47 material. The present invention develops a DSCs counter electrode preparation method with easy-to-obtain raw materials, low cost and simple process by using MIL-47 material as the precursor of the DSCs counter electrode material, and solves the problem of commercial Pt counter electrodes in existing DSCs High cost, easy to corrode and other problems. By using vanadium-based MOFs materials as DSCs counter electrodes, the present invention enriches the material range of counter electrode materials, achieves the purpose of reducing the cost of DSCs, provides an experimental basis for the application of MOFs materials in energy conversion devices, and contributes to the construction of high-efficiency DSCs It has a guiding effect on the electrodes. Experiments have proved that the MOFs material prepared by the present invention is used as the counter electrode of DSCs, and has good electrical conductivity, good catalytic 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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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20
CPCH01G9/2022Y02E10/542
Inventor 史彦涛李燕茜
Owner DONGGUAN UNIV OF TECH
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