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Preparation method and application of sulfonated polyether-ether-ketone-carboxylated titanium dioxide hybrid membrane

A technology for sulfonating polyetheretherketone and titanium dioxide, which is applied in electrochemical generators, fuel cell parts, fuel cells, etc., can solve the problems of proton exchange membranes that have not been reported in literature, achieve simple process and improve membrane performance. , the effect of low methanol permeability

Active Publication Date: 2011-06-29
南通诚恩机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the in situ generation of sulfonated polyetheretherketone (SPEEK)-carboxylated titanium dioxide hybrid membranes for proton exchange membranes in direct methanol fuel cells has not been reported in the literature

Method used

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  • Preparation method and application of sulfonated polyether-ether-ketone-carboxylated titanium dioxide hybrid membrane
  • Preparation method and application of sulfonated polyether-ether-ketone-carboxylated titanium dioxide hybrid membrane
  • Preparation method and application of sulfonated polyether-ether-ketone-carboxylated titanium dioxide hybrid membrane

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Experimental program
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Embodiment 1

[0014] 0.7 g of sulfonated polyetheretherketone (SPEEK) was weighed and dissolved in 5 g of N,N-dimethylformamide (DMF), stirred at room temperature for 12 hours to obtain a SPEEK casting solution. At room temperature, 0.07 g of butyl titanate and 0.041 g of acetylacetone were mixed and added to 2 g of DMF, and stirred for 3 h, and then 0.0037 g of water with pH=1 was slowly added and stirred for 10 h to obtain a yellow transparent titanium dioxide sol. Then, 0.0033 g of 3,4-dihydroxyphenylpropionic acid was weighed and added to the obtained titanium dioxide sol to obtain a brownish red solution. Slowly mix the two solutions obtained above and stir at room temperature for 1 hour, filter and stand for degassing, pour the obtained casting solution onto a clean glass plate, and place it in an oven to dry at 60°C for 12 hours. Then heat up to 80°C and dry for 10 hours, and finally anneal at 120°C, remove the film and treat it in 2M sulfuric acid for 12 hours, then rinse with deion...

Embodiment 2

[0016] 0.7 g of sulfonated polyetheretherketone (SPEEK) was weighed and dissolved in 5 g of N,N-dimethylformamide (DMF), stirred at room temperature for 12 hours to obtain a SPEEK casting solution. At room temperature, 0.14 g of butyl titanate and 0.082 g of acetylacetone were mixed and added to 2 g of DMF, and stirred for 3 h, and then 0.059 g of water with pH=1 was slowly added and stirred for 10 h to obtain a yellow transparent titanium dioxide sol. Then, 0.0066 g of 3,4-dihydroxyphenylpropionic acid was weighed and added to the obtained titanium dioxide sol to obtain a brownish red solution. Slowly mix the two solutions obtained above and stir at room temperature for 1 hour, filter and stand for degassing, pour the obtained casting solution onto a clean glass plate, and place it in an oven to dry at 60°C for 12 hours. Then heat up to 80°C and dry for 10 hours, and finally anneal at 120°C, remove the film and treat it in 2M sulfuric acid for 12 hours, then rinse with deioni...

Embodiment 3

[0018] 0.7 g of sulfonated polyetheretherketone (SPEEK) was weighed and dissolved in 5 g of N,N-dimethylformamide (DMF), stirred at room temperature for 12 hours to obtain a SPEEK casting solution. At room temperature, 0.21 g of butyl titanate and 0.123 g of acetylacetone were mixed and added to 2 g of DMF, and stirred for 3 h, then slowly added 0.089 g of water with pH=1 and continued stirring for 10 h to obtain a yellow transparent titanium dioxide sol. Then 0.0099 g of 3,4-dihydroxyphenylpropionic acid was weighed and added to the obtained titanium dioxide sol to obtain a brownish red solution. Slowly mix the two solutions obtained above and stir at room temperature for 1 hour, filter and stand for degassing, pour the obtained casting solution onto a clean glass plate, and place it in an oven to dry at 60°C for 12 hours. Then heat up to 80°C and dry for 10 hours, and finally anneal at 120°C, remove the film and treat it in 2M sulfuric acid for 12 hours, then rinse with deio...

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Abstract

The invention discloses a preparation method and application of a sulfonated polyether-ether-ketone-carboxylated titanium dioxide hybrid membrane. The preparation method comprises the following steps of: preparing sulfonated polyether-ether-ketone and solution of the sulfonated polyether-ether-ketone; preparing carboxylated titanium dioxide sol; mixing the carboxylated titanium dioxide sol and the solution of the sulfonated polyether-ether-ketone to perform condensation polymerization to form membrane casting solution; after standing, filtering and de-foaming the membrane casting solution, curtain coating, drying and annealing the membrane casting solution to form a membrane; and acidizing and drying the membrane to obtain the sulfonated polyether-ether-ketone-carboxylated titanium dioxide hybrid membrane. The hybrid membrane serves as a direct methanol fuel cell proton exchange membrane. The hybrid membrane has the advantages that: the preparation method is simple; nano inorganic titanium dioxide particles are uniformly distributed in the prepared membrane; a carboxyl group effectively improves the performance of the membrane; and the hybrid membrane has relatively low methanol permeability and relatively high proton conductivity.

Description

technical field [0001] The invention relates to a sulfonated polyetheretherketone (SPEEK)-carboxylated titanium dioxide (TiO 2 The preparation and application of -COOH) hybrid film belong to organic-inorganic hybrid film technology. Background technique [0002] Fuel cell is a new type of chemical energy. It is a device that directly converts the chemical energy of fuel into electrical energy in the form of electrochemical reaction without combustion. It has the advantages of high power generation efficiency, applicable to various fuels and environmental friendliness. . Among them, the direct methanol fuel cell uses methanol as fuel. Compared with other fuel cells, it has outstanding advantages such as quick start at room temperature, high energy density, cheap and abundant fuel, simple structure, and low cost. It is known as the most advanced fuel cell in the 21st century A promising new portable power source. The proton exchange membrane is one of the key components of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/14C08J5/18C08L61/16C08G8/02C08K9/04C08K3/22H01M8/02H01M2/16H01M8/0202H01M8/1011H01M8/1041
CPCY02E60/50Y02E60/12
Inventor 吴洪徐涛姜忠义
Owner 南通诚恩机械有限公司
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