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A vanadium battery based triazine derivative diaphragm and preparation method thereof

A technology of triazine derivatives and vanadium batteries, applied in fuel cells, electrochemical generators, regenerative fuel cells, etc., can solve the problems of human body and environmental hazards, anti-ultraviolet aging chemical stability, poor vanadium resistance, and environmental protection , to achieve the effect of low price, good anti-ultraviolet aging and alkali resistance, and cost saving

Active Publication Date: 2020-05-15
太湖县市场监督检验所(太湖县功能膜检测研究院)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional anion-exchange membranes are mostly prepared with quaternary ammonium salt polymers. In the preparation process of such anion-exchange membranes, the highly toxic substance chloromethyl ether is one of the indispensable raw materials, which causes great harm to the human body and the environment. In addition, this kind of material has poor anti-ultraviolet aging, chemical stability and vanadium resistance. Under the premise of ensuring mechanical properties, the ion conductivity needs to be further improved.

Method used

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  • A vanadium battery based triazine derivative diaphragm and preparation method thereof
  • A vanadium battery based triazine derivative diaphragm and preparation method thereof
  • A vanadium battery based triazine derivative diaphragm and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] A preparation method based on a triazine derivative diaphragm for a vanadium battery, comprising the steps of:

[0030] 1) Preparation of polymeric triazine derivatives: 10 g of 2,4-diamino-6-phenyl-1,3,5-triazine and 35 g of 2-chloroethyl vinyl ether were added to 100 g of acetonitrile and mixed Evenly, stir and reflux at 30°C for 6 hours, then remove the solvent by rotary evaporation at 40°C, then wash with ether and ethyl acetate for 3 times, and finally remove the solvent by rotary evaporation at 40°C;

[0031] 2) Preparation of polymer film: 3 g of polymerized triazine derivatives prepared in step 1), 2 g of acrylonitrile, 2 g of perfluoro-n-propyl vinyl ether, 0.05 g of sodium dodecylbenzenesulfonate and benzoin Mix 0.1g of diethyl ether, drop it on a glass plate, put it under a 200nm ultraviolet lamp under a nitrogen atmosphere and illuminate it for 45 minutes, a polymerization reaction occurs, and a polymer film is obtained;

[0032] A triazine derivative-based...

Embodiment 2

[0035] A preparation method based on a triazine derivative diaphragm for a vanadium battery, comprising the steps of:

[0036] 1) Preparation of polymeric triazine derivatives: 10 g of 2,4-diamino-6-phenyl-1,3,5-triazine and 37 g of 2-chloroethyl vinyl ether were added to 110 g of diethyl ether and mixed Uniform, stirred and refluxed at 33°C for 7 hours, then removed the solvent by rotary evaporation at 43°C, washed with ether and ethyl acetate for 4 times, and finally removed the solvent by rotary evaporation at 44°C;

[0037] 2) Preparation of polymer film: 3.3 g of polymerized triazine derivatives prepared in step 1), 4 g of styrene, 3 g of perfluoro-n-propyl vinyl ether, 0.06 g of polyoxypropylene polyvinyl glyceryl ether and benzoin Mix 0.13g of dimethyl ether, drop it on a glass plate, put it under a 220nm ultraviolet lamp under an argon atmosphere and illuminate it for 48 minutes, a polymerization reaction occurs, and a polymer film is obtained;

[0038] A triazine der...

Embodiment 3

[0041] A preparation method based on a triazine derivative diaphragm for a vanadium battery, comprising the steps of:

[0042] 1) Preparation of polymeric triazine derivatives: 10 g of 2,4-diamino-6-phenyl-1,3,5-triazine and 38 g of 2-chloroethyl vinyl ether were added to 113 g of acetone and mixed Evenly, stir and reflux at 38°C for 8 hours, then remove the solvent by rotary evaporation at 48°C, then wash with ether and ethyl acetate for 5 times, and finally remove the solvent by rotary evaporation at 48°C;

[0043]2) Preparation of polymer film: 3.8 g of polymerized triazine derivatives prepared in step 1), 4.5 g of α-methylstyrene, 3.5 g of perfluoro-n-propyl vinyl ether, nonylphenol polyoxygen Mix 0.07g of vinyl ether and 0.18g of benzoin isopropyl ether, drop it on a glass plate, put it under a 240nm ultraviolet lamp under a neon gas atmosphere, and illuminate it for 55 minutes to undergo a polymerization reaction to obtain a polymer film;

[0044] A triazine derivative-...

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Abstract

The invention discloses a triazine derivative-based separator for a vanadium battery and a preparation method of the separator. The preparation method comprises the steps of firstly, adding 2,4-diamino-6-phenyl-1,3,5-triazine and 2-chloroethyl vinyl ether into an organic solvent, performing uniform mixing, performing stirring and backflow reaction for 6-8 hours under 30-40 DEG C, performing rotaryevaporation under 40-50 DEG C to remove a solvent, sequentially washing the product with ethyl ether and ethyl acetate for 3-5 times, performing rotary evaporation under 40-50 DEG C to remove the solvent so as to prepare a polymerization triazine derivative; and mixing the polymerization triazine derivative, a polymerization monomer, heptafluoropropyl trifluorovinyl ether, an emulsifier and a light initiator, dropping the mixture onto a glass plate, placing the glass plate under ultraviolet light of 200-250 nanometers in nitrogen or inert gas atmosphere for irradiation for 45-55 minutes, andgenerating polymerization reaction to obtain a polymer membrane. The preparation method is simple and practical, the separator is more excellent in mechanical property, ultraviolet aging resistance and chemical stability, higher in ion conductivity, better in vanadium resistance, and is green and environmental-friendly, and no toxic raw material is used during the preparation process.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a fuel cell component, in particular to a triazine derivative-based diaphragm for a vanadium battery and a preparation method thereof. Background technique [0002] With the development of the global economy and the increase of population, the available resources on the earth are becoming increasingly scarce, and environmental problems are becoming more and more serious. Therefore, green new energy technologies that are reusable, environmentally friendly and have high energy conversion efficiency have attracted widespread attention in the industry. It has become a common goal pursued by industry and academia in various countries. Among them, as one of the green new energy technologies, the all-vanadium redox flow battery can be used as a clean, efficient and large-scale energy due to its long life, good flexibility, deep discharge, low cross-contamination, and good stabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0221H01M8/18C08F283/00C08F220/44C08F212/08C08F212/12C08F212/14C08G73/06
CPCC08F283/00C08G73/0644H01M8/0221H01M8/188C08F220/44C08F212/08C08F212/12C08F212/14Y02E60/50
Inventor 万章文
Owner 太湖县市场监督检验所(太湖县功能膜检测研究院)
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