Inorganic metal ion mixing with fluorine proton exchange membrane and preparing method thereof

A proton exchange membrane and inorganic metal technology, applied in the field of inorganic metal ion doped fluorine-containing proton exchange membrane and its preparation, can solve the problem of fuel cell durability and service life reduction, chemical deterioration of proton exchange membrane, fuel cell efficiency decline, etc. problems, to achieve the effect of increased proton conductivity, excellent corrosion resistance, and improved utilization.

Active Publication Date: 2010-07-14
SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for fuel cells composed of this type of proton exchange membrane, hydrogen peroxide or peroxide radicals generated by electrochemical reactions inside the cell may cause chemical degradation of the proton exchange membrane, which will lead to fuel cell failure. Reduced durability and service life
In addition, when the working temperature of the perfluorosulfonic acid exchange membrane is higher than 100°C, the proton conductivity of the membrane will drop sharply due to the rapid dehydration of the membrane, thereby greatly reducing the efficiency of the fuel cell.

Method used

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  • Inorganic metal ion mixing with fluorine proton exchange membrane and preparing method thereof
  • Inorganic metal ion mixing with fluorine proton exchange membrane and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Acid etching and purification of ion-conducting ceramic materials

[0040] Take 2.55g of β-Al 2 o 3Ion-conductive ceramic ultrafine powder, particle size 10-50nm, dried in a vacuum oven at 80°C for 24 hours, added to 100ml of 1.5mol / L HCl after cooling, and ultrasonically treated at 50-70°C for 60 minutes, The precipitate was filtered, washed, and added to a mixed solution of 50 ml of absolute ethanol and water, the volume ratio of absolute ethanol and water was 2:1, ultrasonically treated for 20 minutes, and then the resulting precipitate was dried in a drying oven at 140°C After 10-30 minutes, cool at room temperature to obtain pure β-Al whose surface has been acid-etched. 2 o 3 Ionic conductive ceramic ultrafine powder.

[0041] (2) Surface modification of ion-conducting ceramic materials with thermoplastic resins

[0042] 42.5g polybenzimidazole resin is dissolved in dimethyl sulfoxide, and preparation concentration is the polybenzimidazole resin solution o...

Embodiment 2

[0049] Take 2.55g of SnO 2 Ion-conductive ceramic powder with a particle size of 50-100 nm was placed in a vacuum oven at 80°C for 24 hours and dried for 24 hours. After cooling, 100 ml of 1.5 mol / L HCl was added and ultrasonically treated at 60°C for 40 minutes. The precipitate was filtered, washed and added to a mixture solution of concentrated hydrochloric acid and concentrated nitric acid with a volume ratio of 3:1, treated at room temperature for 10 minutes, filtered and dried to obtain acid-etched pure SnO 2 Ionic conductive ceramic powder.

[0050] 42.5g polyimide resin is dissolved in N-methylpyrrolidone, and preparation concentration is the polyimide resin solution of 8wt%; Get 2.35g above-mentioned SnO through acid etching treatment 2 Ion-conductive ceramic ultrafine powder is dispersed in a mixed solution of 200 ml of anhydrous methanol and water, the volume ratio of anhydrous methanol and water is 2:1, and the obtained dispersion is ultrasonically pulverized and t...

Embodiment 3

[0055] Take 2.55g of mordenite / SnO 2 The composite material, with a particle size of 50-100 nm, was dried in a vacuum oven at 80° C. for 24 hours, and then acid-etched and purified according to the method of Example 1;

[0056] 25.5g polyvinylidene chloride resin is dissolved in N, N-dimethylacetamide, the preparation concentration is the polyvinylidene chloride resin solution of 10wt%; Get 2.35g above-mentioned mordenite / SnO through acid etching treatment 2 The composite material is dispersed in a mixed solution of 200 milliliters of absolute ethanol and water, the volume ratio of absolute ethanol and water is 2: 1, and the obtained dispersion is added to the obtained polyvinylidene chloride resin solution after ultrasonic pulverization; fully Stir and disperse evenly to obtain polyvinylidene chloride resin-modified mordenite / SnO 2 of the dispersion.

[0057] Take 0.5g of cerium nitrate and dissolve it in ethanol-water mixed solution, and slowly add it dropwise to the dispe...

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Abstract

The invention relates to an inorganic metal ion mixing with fluorine proton exchange membrane for a fuel cell and a preparing method thereof. In the fluorine proton exchange membrane, inorganic metal ion takes ion conductivity ceramics as a carrier to be distributed in fluorinion exchange resin. The preparing procedures of the fluorine proton exchange membrane are as follows: the ion conductivity ceramics material is purified, and thermoplastic resin is used to embellish the surface of the ion conductivity ceramics material, preparing inorganic metal compound taking the ion conductivity ceramics as the carrier, and preparing the inorganic metal ion mixing with fluorine proton exchange membrane used for the fuel cell. The proton exchange membrane used for the fuel cell has higher conductivity and stronger mechanical intensity, thus facilitating the improvement of the performance of the fuel cell.

Description

technical field [0001] The invention relates to an inorganic metal ion-doped fluorine-containing proton exchange membrane for fuel cells and a preparation method thereof. The proton exchange membrane has relatively high proton conductivity and mechanical strength, and is beneficial to the improvement of fuel cell performance. Background technique [0002] Proton exchange membrane fuel cell is a power generation device that directly converts chemical energy stored in fuel and oxidant into electrical energy through electrochemical reaction. It has the advantages of low operating temperature, fast start-up, high specific power, and environmental friendliness. Its characteristics determine that it has broad application prospects in the fields of fixed power stations, portable electronic products, and electric vehicles. It is considered to be the preferred clean and efficient power generation technology and the preferred energy source in the 21st century. Proton exchange membrane...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/32B01D67/00C08J5/22H01M8/02H01M8/10H01M8/1018H01M8/1069
CPCY02E60/523Y02E60/522Y02E60/50Y02P70/50
Inventor 张永明刘萍唐军柯赵淑会
Owner SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
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