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Polymeric hybrid proton exchange membrane synergistically modified by PCNT and PGO and preparation method thereof

A proton exchange membrane and synergistic modification technology, which is applied in the field of polymer hybrid proton exchange membrane and its preparation, can solve the problem of insufficient proton conductivity and achieve broad application prospects, low production cost, and good industrial production basis.

Active Publication Date: 2022-06-17
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the proton conductivity of the membrane at a slightly lower temperature (<100°C) is not high enough and needs to be further improved

Method used

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  • Polymeric hybrid proton exchange membrane synergistically modified by PCNT and PGO and preparation method thereof
  • Polymeric hybrid proton exchange membrane synergistically modified by PCNT and PGO and preparation method thereof
  • Polymeric hybrid proton exchange membrane synergistically modified by PCNT and PGO and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Weigh 100 mg of carboxylated CNTs into 200 mL of Tris buffer solution (pH 8.5), ultrasonically disperse them uniformly, add 50 mg of dopamine hydrochloride to it, place it in an ice-water bath and ultrasonicate for 30 min, then stir at 25°C 24h, centrifuged to separate the product, washed thoroughly with deionized water, and freeze-dried to obtain polydopamine-modified carbon nanotubes (DCNTs);

[0041] 2. Weigh 100 mg of GO into 200 mL of Tris buffer solution (pH 8.5), ultrasonically disperse it uniformly, add 50 mg of dopamine hydrochloride to it, place it in an ice-water bath for 30 min, and then stir at 25°C for 24 h. The product was separated by centrifugation, washed thoroughly with deionized water, and freeze-dried to obtain polydopamine-modified graphene oxide (DGO);

[0042] 3. Weigh 30 mg of DCNT and 90 mg of alendronic acid, respectively, add them to 90 mL of Tris buffer solution (pH 8.5), stir at 25°C for 24 h, separate the product by centrifugation, and ...

Embodiment 2

[0047] 1. Weigh 100 mg of carboxylated CNTs into 200 mL of Tris buffer solution (pH 8.5), ultrasonically disperse them uniformly, add 50 mg of dopamine hydrochloride to it, place it in an ice-water bath and ultrasonicate for 30 min, then stir at 25°C 24h, centrifuged to separate the product, washed thoroughly with deionized water, and freeze-dried to obtain polydopamine-modified carbon nanotubes (DCNTs);

[0048] 2. Weigh 100 mg of GO into 200 mL of Tris buffer solution (pH 8.5), ultrasonically disperse it uniformly, add 50 mg of dopamine hydrochloride to it, place it in an ice-water bath for 30 min, and then stir at 25°C for 24 h. The product was separated by centrifugation, washed thoroughly with deionized water, and freeze-dried to obtain polydopamine-modified graphene oxide (DGO);

[0049] 3. Weigh 30 mg of DCNT and 90 mg of alendronic acid, respectively, add them to 90 mL of Tris buffer solution (pH 8.5), stir at 25°C for 24 h, separate the product by centrifugation, and ...

Embodiment 3

[0054] 1. Weigh 100 mg of carboxylated CNTs into 200 mL of Tris buffer solution (pH 8.5), ultrasonically disperse them uniformly, add 50 mg of dopamine hydrochloride to it, place it in an ice-water bath and ultrasonicate for 30 min, then stir at 25°C 24h, centrifuged to separate the product, washed thoroughly with deionized water, and freeze-dried to obtain polydopamine-modified carbon nanotubes (DCNTs);

[0055] 2. Weigh 100 mg of GO into 200 mL of Tris buffer solution (pH 8.5), ultrasonically disperse it uniformly, add 50 mg of dopamine hydrochloride to it, place it in an ice-water bath for 30 min, and then stir at 25°C for 24 h. The product was separated by centrifugation, washed thoroughly with deionized water, and freeze-dried to obtain polydopamine-modified graphene oxide (DGO);

[0056] 3. Weigh 30 mg of DCNT and 90 mg of alendronic acid, respectively, add them to 90 mL of Tris buffer solution (pH 8.5), stir at 25°C for 24 h, separate the product by centrifugation, and ...

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Abstract

The invention belongs to the technical field of membranes, and discloses a PCNT and PGO synergistically modified polymer hybrid proton exchange membrane and a preparation method thereof, and the preparation method comprises the following steps: (1) preparing a polydopamine modified carbon nanotube DCNT; (2) preparing graphene oxide DGO modified by polydopamine; (3) carrying out a reaction on alendronate and DCNT to obtain a phosphorylated carbon nanotube PCNT; (4) carrying out reaction on alendronate and DGO to obtain phosphorylated graphene oxide PGO; and (5) obtaining a membrane casting solution based on the sulfonated polymer solution, PCNT and PGO to form a membrane material, and further treating to obtain the PCNT and PGO synergistically modified polymer hybrid proton exchange membrane. The structure and composition of key functional components in the proton exchange membrane are improved, and the proton conductivity of the prepared proton exchange membrane is greatly improved based on the synergistic effect of the functional components PCNT and PGO.

Description

technical field [0001] The invention belongs to the technical field of membranes, and more particularly, relates to a polymer hybrid proton exchange membrane with synergistic modification of PCNT and PGO and a preparation method thereof, wherein, PCNT represents phosphorylated carbon nanotubes, and PGO represents phosphorylated oxidation Graphene. Background technique [0002] The proton exchange membrane fuel cell is an electrochemical device with the advantages of environmental friendliness, high energy density, and low operating noise. It can directly convert the chemical energy of fuel into electrical energy without burning. Since its inception, it has received extensive attention from industry and academia. As one of the core components of proton exchange membrane fuel cells, the proton exchange membrane plays the role of blocking fuel and conducting protons. Among them, proton conductivity is one of the most critical parameters affecting the performance of proton exc...

Claims

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Application Information

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IPC IPC(8): C08J5/22C08L27/18C08K9/04C08K3/04B82Y30/00B82Y40/00H01M8/1088
CPCC08J5/2293C08J5/225H01M8/1088B82Y30/00B82Y40/00C08J2327/18C08K9/04C08K3/041C08K3/042C08K2201/011Y02E60/50
Inventor 刘宏芳饶壮李广芳
Owner HUAZHONG UNIV OF SCI & TECH
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