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Carbon nanotube/graphene oxide nanoribbon-polymer hybrid proton exchange membrane and preparation method thereof

A technology of graphene nanoribbons and proton exchange membranes, which is applied in the field of carbon nanotubes/graphene oxide nanoribbons-polymer hybrid proton exchange membranes and its preparation, can solve the problems of membrane performance restriction and reduction, and achieve proton conduction Increased efficiency, high size matching, and good dispersion

Inactive Publication Date: 2016-07-20
FUDAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The above process disperses carbon nanotubes or graphene oxide in the polymer matrix by blending, which improves the proton conductivity of the proton exchange membrane or reduces the methanol permeability, but the single-structure carbon nanomaterial-polymer The membrane has not been able to effectively improve these two properties at the same time, thus restricting the optimization of membrane performance improvement

Method used

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  • Carbon nanotube/graphene oxide nanoribbon-polymer hybrid proton exchange membrane and preparation method thereof
  • Carbon nanotube/graphene oxide nanoribbon-polymer hybrid proton exchange membrane and preparation method thereof
  • Carbon nanotube/graphene oxide nanoribbon-polymer hybrid proton exchange membrane and preparation method thereof

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Embodiment 1

[0026] (1) Preparation of carbon nanotubes / graphene oxide nanoribbons: disperse 0.1g of multi-walled carbon nanotubes in 35ml of sulfuric acid, stir for 1.5h; add 5mL of phosphoric acid, stir for 20min, while raising the temperature to 70 Add 0.2 g of potassium permanganate at a rate of h, and react at 70°C for 2 hours; then cool to room temperature, slowly add the reaction solution to 100 mL of 0°C, 3wt% hydrogen peroxide solution; centrifuge, wash with water, dialyze for a week, freeze Dry, get carbon nanotube / graphene oxide nanoribbon composite;

[0027] (2) Preparation of carbon nanotube / graphene oxide nanoribbon-polymer hybrid proton exchange membrane: add 1 mg carbon nanotube / graphene oxide nanoribbon to 4 ml of commercially available Nafion TM solution, sonicated for 20min; the resulting mixture was removed by rotary evaporation to remove most of the solvent, then 4ml of N,N-dimethylformamide was added, and rotary evaporation was continued for 20min; after standing for ...

Embodiment 2

[0035] (1) Preparation of carbon nanotubes / graphene oxide nanoribbons: disperse 0.1g of multi-walled carbon nanotubes in 35ml of sulfuric acid, stir for 1.5h; add 5mL of phosphoric acid, stir for 20min, while raising the temperature to 70 Add 0.1 g of potassium permanganate at a rate of h, and react at 70°C for 2 hours; then cool to room temperature, slowly add the reaction liquid to 100 mL of 0°C, 3wt% hydrogen peroxide solution; centrifuge, wash with water, dialyze for a week, freeze Dry, get carbon nanotube / graphene oxide nanoribbon composite;

[0036] (2) Preparation of carbon nanotube / graphene oxide nanoribbon-polymer hybrid proton exchange membrane: add 1 mg carbon nanotube / graphene oxide nanoribbon to 4 ml of commercially available Nafion TM solution, sonicated for 20min; the resulting mixture was removed by rotary evaporation to remove most of the solvent, then 4ml of N,N-dimethylformamide was added, and rotary evaporation was continued for 20min; after standing for 1....

Embodiment 3

[0044] (1) Preparation of carbon nanotubes / graphene oxide nanoribbons: disperse 0.1g of multi-walled carbon nanotubes in 35ml of sulfuric acid, stir for 1.5h; add 5mL of phosphoric acid, stir for 20min, while raising the temperature to 70 Add 0.3 g of potassium permanganate at a rate of h, react at 70°C for 3 hours; then cool to room temperature, slowly add the reaction solution to 100 mL of 0°C 3wt% hydrogen peroxide solution; centrifuge, wash with water, dialyze for a week, freeze Dry, get carbon nanotube / graphene oxide nanoribbon composite;

[0045] (2) Preparation of carbon nanotube / graphene oxide nanoribbon-polymer hybrid proton exchange membrane: add 1 mg carbon nanotube / graphene oxide nanoribbon to 4 ml of commercially available Nafion TM solution, sonicated for 20min; the resulting mixture was removed by rotary evaporation to remove most of the solvent, then 4ml of N,N-dimethylformamide was added, and rotary evaporation was continued for 20min; after standing for 1.5h,...

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Abstract

The invention belongs to the technical field of membranes and particularly relates to a carbon nanotube / graphene oxide nanoribbon-polymer hybrid proton exchange membrane and a preparation method thereof. The proton exchange membrane is prepared by: preparing multi-wall carbon nanotubes into carbon nanotube / graphene oxide nanoribbon composite; blending the carbon nanotube / graphene oxide nanoribbon composite with a polymer solution. The proton exchange membrane prepared herein is introduced with one-dimensional and two-dimensional composite (carbon nanotube / graphene oxide nanoribbons) and thereby has good dispersity and has proton conductivity greatly improved as compared to that of pure-polymer proton exchange membranes and multiply improved particularly in high-temperature low-humidity environment; meanwhile, the invention is low in production cost, easy for batch large-scale production and has good industrial production basis and promising application prospect.

Description

technical field [0001] The invention belongs to the field of membrane technology, and in particular relates to a carbon nanotube / graphene oxide nanoribbon-polymer hybrid proton exchange membrane and a preparation method thereof. Background technique [0002] The proton exchange membrane fuel cell is a power generation device that directly converts the chemical energy in fuel and oxidant into electrical energy by means of electrochemical reaction without combustion. As a clean, efficient and safe green energy source, proton exchange membrane fuel cells have shown broad market prospects and received widespread attention. As a key component of a fuel cell—the proton exchange membrane, its performance significantly affects the performance of the fuel cell. It provides channels for the migration and transport of protons, and its comprehensive performance plays a vital role in the development of high-performance fuel cells. effect. However, under low humidity and / or high tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/22C08L27/18C08K7/24C08K3/04
CPCC08J5/225C08J2327/18C08K3/04C08K7/24C08L27/18C08L2203/16
Inventor 贾炜汤蓓蓓武培怡
Owner FUDAN UNIV
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