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Method for preparing boron phosphate coated carbon nanotube composite proton exchange membrane

A proton exchange membrane and nanotube composite technology is applied in the field of preparation of boron phosphate-coated carbon nanotube composite proton exchange membrane, which can solve the problems of poor compatibility of organic phase and inorganic phase, decrease of uniformity and physical and chemical properties, etc. , to achieve the effect of good compatibility, simple method and avoid chemical treatment process

Active Publication Date: 2016-03-09
HUBEI ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this direct doping method makes the compatibility of organic and inorganic phases worse, which leads to a decrease in the uniformity and physical and chemical properties of the film.

Method used

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  • Method for preparing boron phosphate coated carbon nanotube composite proton exchange membrane
  • Method for preparing boron phosphate coated carbon nanotube composite proton exchange membrane
  • Method for preparing boron phosphate coated carbon nanotube composite proton exchange membrane

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Embodiment 1

[0035]A preparation method of boron phosphate coated carbon nanotube composite proton exchange membrane, the steps are as follows:

[0036] 1) Preparation of sulfonated polyether ether ketone:

[0037] Put the polyetheretherketone powder in 98wt% concentrated sulfuric acid (solid-to-liquid ratio: 1g:20mL), the reaction temperature is 50°C, fully stir the reaction for 3h, and then pour the reaction solution into a large amount of ice-water mixture and stir for 1h, statically The resulting solid was washed with deionized water several times until the pH of the eluate was 6.5-7.0, and the precipitated polymer was filtered out, and finally dried at 60°C for 24 hours to obtain sulfonated polyether ether ketone;

[0038] 2) Preparation of boron phosphate-coated carbon nanotubes:

[0039] (1) preparation concentration is the Tris (trishydroxymethylaminomethane) solution of 50mmol / L, adds the hydrochloric acid adjustment solution pH value of 0.1mol / L to be 8, obtains 100mlTris-HCl bu...

Embodiment 2

[0048] A preparation method of boron phosphate coated carbon nanotube composite proton exchange membrane, the steps are as follows:

[0049] 1) Preparation of sulfonated polyether ether ketone:

[0050] Put the polyetheretherketone powder in 98wt% concentrated sulfuric acid (solid-to-liquid ratio: 1g:20mL) at a reaction temperature of 50°C and fully react for 3 hours, then pour the reaction solution into a large amount of ice-water mixture and stir for 1 hour, then let stand Filtrate, and wash the obtained solid with deionized water several times until the pH of the eluate is 6.5-7.0, filter out the precipitated polymer, and finally dry at 60°C for 24 hours to obtain sulfonated polyether ether ketone;

[0051] 2) Preparation of boron phosphate-coated carbon nanotubes:

[0052] (1) preparation concentration is the Tris (trishydroxymethylaminomethane) solution of 50mmol / L, adds the hydrochloric acid adjustment solution pH value of 0.1mol / L to be 8, obtains 100mlTris-HCl buffer ...

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Abstract

The invention belongs to the technical field of fuel cell proton exchange membranes, and particularly discloses a method for preparing a boron phosphate coated carbon nanotube composite proton exchange membrane. According to the method, sulfonated polyether ether ketone is used as the base material, and boron phosphate coated carbon nanotubes are used as the dopant, so that the membrane is prepared. The composite proton exchange membrane prepared through the method is excellent in overall performance. Moreover, the preparation technology is simple, the material cost is low, and the method can be applied to proton exchange membrane fuel cells.

Description

technical field [0001] The invention relates to the technical field of fuel cell proton exchange membranes, in particular to a method for preparing a boron phosphate-coated carbon nanotube composite proton exchange membrane. Background technique [0002] Proton exchange membrane (protonexchangemembrane, PEM) is the core component of fuel cell (fuel cell, FC), and the perfluorosulfonic acid membrane is still widely used at present, and its representative product is DuPont's A series of membranes, which have the advantages of good chemical stability and high proton conductivity, but also have disadvantages such as complex process, high cost, low operating temperature, and poor alcohol resistance in direct methanol fuel cell (DMFC) applications. These The disadvantages have accelerated research and development efforts to find new non-fluoropolymer materials. At present, the non-fluorine polymer PEM materials that have been studied more include aromatic polymers such as polyim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1069H01M8/1088H01M8/1048
CPCH01M8/1048H01M8/1069H01M8/1088H01M2008/1095Y02E60/50
Inventor 郑譞文胜龚春丽汪广进刘海汪杰程凡郑根稳
Owner HUBEI ENG UNIV
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