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Amino-functionalized polymer hybrid proton exchange membrane with modified rod-shaped metal organic framework and preparation method of polymer hybrid proton exchange membrane

A metal-organic framework and amino functionalization technology, which is applied in electrochemical generators, climate sustainability, final product manufacturing, etc., can solve problems such as unsatisfactory proton conductivity, achieve excellent proton conductivity, strong water retention capacity, Effect of low fuel permeability

Inactive Publication Date: 2017-06-20
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

"Chemical Materials A" (Journal of Materials Chemistry A 2015, 3, 15838-15842) reported that the compound ZIF-8@GO of GO and ZIF-8 was doped into the perfluorosulfonic acid resin Nafion to prepare ZIF-8 @GO / Nafion hybrid membrane has a proton conductivity of 0.28 S / cm at 120 °C and 40% RH, which is greatly improved compared with the unmodified Nafion membrane, but its proton conductivity under low humidity conditions Unsatisfactory improvement

Method used

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  • Amino-functionalized polymer hybrid proton exchange membrane with modified rod-shaped metal organic framework and preparation method of polymer hybrid proton exchange membrane
  • Amino-functionalized polymer hybrid proton exchange membrane with modified rod-shaped metal organic framework and preparation method of polymer hybrid proton exchange membrane
  • Amino-functionalized polymer hybrid proton exchange membrane with modified rod-shaped metal organic framework and preparation method of polymer hybrid proton exchange membrane

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Experimental program
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Effect test

Embodiment 1

[0023] 1. Weigh 3.84 mmolIn(NO 3 ) 3 ·xH 2 O and 1.29 mmol 2-aminoterephthalic acid were added to 12.4 mL N,N-dimethylformamide (DMF), and ultrasonically dispersed into a uniform MIL-68(In)-NH 2 The precursor solution was transferred to a 30 mL polytetrafluoroethylene liner, the lid was closed and placed in a reaction kettle to seal tightly, and then placed in a constant temperature oven at 125 °C for 5 h, and the reaction product was centrifuged Separated, first washed with fresh DMF solvent, and then with fresh CH 3 Soak in OH solvent for 3 days, replace with fresh CH twice a day 3 OH solvent, the soaked product was placed in an oven at 50 °C for 6 h, and an amino-functional rod-shaped metal-organic framework (MIL-68(In)-NH 2 ).

[0024] 2. Take 5mL of commercially available Nafion solution, remove about half of the solvent by rotary evaporation, add 1.5mL DMF, and continue rotary evaporation for 10 min. Add 0.4wt% MIL-68(In)-NH to the above Nafion solution 2 , and so...

Embodiment 2

[0027] 1. Weigh 3.84 mmolIn(NO 3 ) 3 ·xH 2 O and 1.29 mmol 2-aminoterephthalic acid were added to 12.4 mL N,N-dimethylformamide (DMF), and ultrasonically dispersed into a uniform MIL-68(In)-NH 2 The precursor solution was transferred to a 30 mL polytetrafluoroethylene liner, the lid was closed and placed in a reaction kettle to seal tightly, and then placed in a constant temperature oven at 125 °C for 5 h, and the reaction product was centrifuged Separated, first washed with fresh DMF solvent, and then with fresh CH 3 Soak in OH solvent for 3 days, replace with fresh CH twice a day 3 OH solvent, the soaked product was placed in an oven at 50 °C for 6 h, and an amino-functional rod-shaped metal-organic framework (MIL-68(In)-NH 2 ).

[0028] 2. Take 5mL of commercially available Nafion solution, remove about half of the solvent by rotary evaporation, add 1.5mL DMF, and continue rotary evaporation for 10 min. Add 0.8wt% MIL-68(In)-NH to the above Nafion solution 2 , and so...

Embodiment 3

[0031] 1. Weigh 3.84 mmolIn(NO 3 ) 3 ·xH 2 O and 1.29 mmol 2-aminoterephthalic acid were added to 12.4 mL N,N-dimethylformamide (DMF), and ultrasonically dispersed into a uniform MIL-68(In)-NH 2 The precursor solution was transferred to a 30 mL polytetrafluoroethylene liner, the lid was closed and placed in a reaction kettle to seal tightly, and then placed in a constant temperature oven at 125 °C for 5 h, and the reaction product was centrifuged Separated, first washed with fresh DMF solvent, and then with fresh CH 3 Soak in OH solvent for 3 days, replace with fresh CH twice a day 3 OH solvent, the soaked product was placed in an oven at 50 °C for 6 h, and an amino-functional rod-shaped metal-organic framework (MIL-68(In)-NH 2 ).

[0032] 2. Take 5mL of commercially available Nafion solution, remove about half of the solvent by rotary evaporation, add 1.5mL DMF, and continue rotary evaporation for 10 min. Add 1.2wt% of MIL-68(In)-NH to the above Nafion solution 2 , and...

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Abstract

The invention belongs to the technical field of a membrane, and particularly relates to an amino-functionalized polymer hybrid proton exchange membrane with a modified rod-shaped metal organic framework and a preparation method of the polymer hybrid proton exchange membrane. The preparation method comprises the steps of firstly, preparing an amino-functionalized rod-shaped metal organic framework (R-MOF-NH2); and finally, doping the amino-functionalized rod-shaped metal organic framework (R-MOF-NH2) into a polymer to obtain the amino-functionalized polymer hybrid proton exchange membrane with the modified rod-shaped metal organic framework. The proton exchange membrane has excellent proton conductivity under a high-humidity or low-humidity condition, and meanwhile, the proton exchange membrane is low in methanol permeability and extremely good in application stability. The method has the advantages of simple operation step, moderate preparation condition and relatively low production cost and has favorable industrial production basis and wide application prospect, and mass production on a large scale is facilitated.

Description

technical field [0001] The invention belongs to the field of membrane technology, in particular to a polymer hybrid proton exchange membrane and a preparation method thereof, in particular to an amino functionalized rod-shaped metal organic framework (R-MOF-NH 2 ) modified polymer hybrid proton exchange membrane and its preparation method. Background technique [0002] Fuel cells have the advantages of no pollution and high efficiency, and they gradually show great potential to replace internal combustion engines. Direct Methanol Fuel Cell is the sixth generation of fuel cell, which has significant advantages such as mild operating conditions, high energy density, no fuel pretreatment device and long service life. Therefore, it has attracted extensive attention from many aspects such as industry and academia. The proton exchange membrane is one of its core components, which not only provides a channel for the migration and transfer of protons, but also effectively blocks t...

Claims

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Application Information

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IPC IPC(8): H01M8/1081H01M8/1065H01M8/1041C08G83/00
CPCC08G83/008H01M8/1041H01M8/1065H01M8/1081Y02E60/50Y02P70/50
Inventor 饶壮汤蓓蓓武培怡
Owner FUDAN UNIV
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