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Porous aromatic framework compound with super high temperature resistance and high conductivity, its preparation method and its application in proton exchange membrane fuel cell

A technology of porous aromatic skeleton and proton exchange membrane, which is applied in the field of preparation of porous aromatic skeleton compounds and porous aromatic skeleton compounds. The effect of conductivity, good heat resistance and conductivity

Inactive Publication Date: 2019-07-19
KEY LAB OF INORGANIC SYNTHESIS & PEPARATIVE CHEM AT JILIN UNIV IN ZHUHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Currently, whether the fuel is H 2 / O 2 Almost all the proton exchange membranes used in PEMFC and direct methanol fuel cells (DMFC) are Nafion series membranes produced by Dupont in the United States. Although Nafion perfluorosulfonic acid membranes have high mechanical strength, good chemical stability, and high proton conductivity ( Higher water content) and other advantages, but the disadvantages of high cost and low working temperature greatly limit the application of PEMFC. Its best working temperature is 80 ℃, exceeding this temperature will make its water content drop sharply, and the conductivity will drop rapidly , whose proton conduction is largely dependent on water
Once the temperature rises to 100°C and above, the water will evaporate in the form of water vapor, and the proton conductivity will also drop greatly.

Method used

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  • Porous aromatic framework compound with super high temperature resistance and high conductivity, its preparation method and its application in proton exchange membrane fuel cell
  • Porous aromatic framework compound with super high temperature resistance and high conductivity, its preparation method and its application in proton exchange membrane fuel cell
  • Porous aromatic framework compound with super high temperature resistance and high conductivity, its preparation method and its application in proton exchange membrane fuel cell

Examples

Experimental program
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Effect test

Embodiment 1

[0044] With a concentration of 98% H 2 SO 4 Used as a high-boiling point acid impregnation material to prepare porous aromatic framework compounds 98% H 2 SO 4 The application of @PAF-1 as a high-conductivity material includes the following steps:

[0045] Step 1: Take 27mg of polytetraphenylmethane and add 15mL of 98% H 2 SO 4 , Stir overnight at room temperature and pressure.

[0046] Step 2: Filter the mixture of Step 1 in an anhydrous and oxygen-free glove box with a glass membrane filter to obtain a blue-black solid. The blue-black filter cake was dried at 100°C under vacuum for 10 hours to obtain the final product 98% H 2 SO 4 @PAF-1 solid 74mg.

[0047] For the final product H obtained in step 2 2 SO 4 @PAF-1 performs infrared spectrum scanning and compares it with the original porous material PAF-1, see the spectrum figure 1 .

[0048] It can be seen from the figure that the high boiling point acid H 2 SO 4 It has entered the porous material PAF-1 and exists stably.

[0049] Th...

Embodiment 2

[0068] With a concentration of 89% H 3 PO 4 Used as a high boiling point acid impregnation material to prepare porous aromatic framework compound 89% H 3 PO 4 @PAF-1 and used as a conductive material. The method of this embodiment is basically the same as that of embodiment 1, except that the H 3 PO 4 As a high boiling point acid impregnating material instead of 98% H 2 SO 4 . The preparation includes the following steps:

[0069] Step 1: Take 26mg of polytetraphenylmethane and add 15mL of 98% H 2 SO 4 , Stir overnight at room temperature and pressure.

[0070] Step 2: Filter the mixture of Step 1 in an anhydrous and oxygen-free glove box with a glass membrane filter to obtain a purple solid. The purple filter cake was dried under vacuum at 100°C for 10 hours to obtain the final product 89% H 3 PO 4 @PAF-1, 227mg.

[0071] 89%H of the final product obtained in step 2 3 PO 4 @PAF-1 performs infrared spectrum scanning and compares it with the original porous material PAF-1, see the s...

Embodiment 3

[0082] Take H at a concentration of 85% 3 PO 4 Used as high boiling point acid impregnation material to prepare porous aromatic skeleton compound 85% H 3 PO 4 @PAF-1 and used as a conductive material. The method of this embodiment is basically the same as that of embodiment 1, the difference is that the concentration of 85% H 3 PO 4 As a high boiling point acid impregnating material instead of 98% H 2 SO 4 . The preparation includes the following steps:

[0083] Step 1: Take 28 mg of polytetraphenylmethane and add 15 mL of 85% H 3 PO 4 , Stir overnight at room temperature and pressure.

[0084] Step 2: Filter the mixture of step 1 in an anhydrous and oxygen-free glove box with a glass membrane filter to obtain a dark purple solid. The dark purple filter cake was dried under vacuum at 100°C for 10 hours to obtain the final product 85% H 3 PO 4 @PAF-1 solid 258mg.

[0085] 85% H of the final product obtained in step 2 3 PO 4 @PAF-1 performs infrared spectrum scanning and compares wit...

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Abstract

Provided are an ultra-high-temperature resistant, high-conductivity porous aromatic framework compound and method for preparation thereof, and application thereof in proton-exchange membrane fuel cell, belonging to the technical field of functional materials; a high-specific surface area porous organic material is used as a high-stability, high-conductivity new conductive material made after framework adsorption of a high-boiling-point acid; the described high-specific surface area porous organic material is polytetraphenylmethane (PAF-1), and the high boiling point acid comprises: 98% H2SO4, 89% H3PO4, and 85% H3PO4; the specific preparation method comprises: adding an appropriate amount of high-boiling-point acid to a high-specific surface area porous organic material polytetraphenylmethane (PAF-1) and mixing overnight; filtering under anhydrous and anaerobic conditions, and drying the obtained solid at 100°C in a vacuum to obtain a final product. The process of the preparation method is simple, yield is high, and it is unnecessary to use an additive. The new type material obtained by means of the method has ultra-high-temperature resistance and high conductivity and may be used in a proton-exchange membrane fuel cell, and serves to provide new ideas in fields relating to fuel cells.

Description

Technical field [0001] The present invention relates to the field of functional materials, in particular to a porous aromatic framework compound with super high temperature resistance and high conductivity, its preparation method and its application in a proton exchange membrane fuel cell, which uses a high specific surface area porous organic framework material as a framework for adsorption The high boiling point acid is made into a porous aromatic skeleton compound with super high temperature resistance and high conductivity. It can be applied to proton exchange membrane fuel cells, providing new ideas for fuel cell related fields. Background technique [0002] Proton exchange membrane fuel cells have the advantages of small size, light weight, high power density, fast start-up, no noise, zero pollution, etc., and have broad application prospects. The proton exchange membrane fuel cell is composed of anode, cathode, catalyst and proton exchange membrane. The proton exchange m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/02H01M8/1048H01M8/1069
CPCC08G61/02C08G2261/11C08G2261/342C08G2261/792H01M8/1048H01M8/1069Y02E60/50
Inventor 贲腾裘式纶
Owner KEY LAB OF INORGANIC SYNTHESIS & PEPARATIVE CHEM AT JILIN UNIV IN ZHUHAI