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Polymer hybrid proton exchange membrane modified by metal organic framework structures and preparation method of membrane

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

Active Publication Date: 2016-12-07
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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  • Polymer hybrid proton exchange membrane modified by metal organic framework structures and preparation method of membrane
  • Polymer hybrid proton exchange membrane modified by metal organic framework structures and preparation method of membrane
  • Polymer hybrid proton exchange membrane modified by metal organic framework structures and preparation method of membrane

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Experimental program
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Effect test

Embodiment 1

[0030] 1. Weigh 0.13 g 2-aminoterephthalic acid and 0.17 g ZrCl respectively 4 , add it to the mixture of 0.8 mL HCOOH and 8 mL N,N-dimethylformamide (DMF), and ultrasonically disperse it into a uniform UiO-66-NH 2 The precursor solution was transferred to a 25 mL polytetrafluoroethylene liner, covered with a lid and placed in a reaction kettle to seal tightly, and then placed in a constant temperature oven at 120 °C for 24 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 a partially cross-linked amino-functionalized metal-organic framework (UiO-66-NH 2 ).

[0031] 2. Weigh 100 mg of GO into 200 mL of Tris buffer solution (pH 8.5), ultrasonically disperse it into a uniform GO solution, add 50 mg of dopamine hydrochloride to the GO solution, and place it in an ice-wate...

Embodiment 2

[0036] 1. Weigh 0.26 g 2-aminoterephthalic acid and 0.17 g ZrCl respectively 4 , add it to the mixture of 0.8 mL HCOOH and 8 mL DMF, and ultrasonically disperse it into a uniform UiO-66-NH 2 The precursor solution was transferred to a 25 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 120 °C for 24 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 a partially cross-linked amino-functionalized metal-organic framework (UiO-66-NH 2 ).

[0037] 2. Weigh 100 mg of GO into 200 mL of Tris buffer solution (pH 8.5), ultrasonically disperse it into a uniform GO solution, add 50 mg of dopamine hydrochloride to the GO solution, and place it in an ice-water bath for ultrasonicati...

Embodiment 3

[0043] 1. Weigh 0.52 g 2-aminoterephthalic acid and 0.17 g ZrCl respectively 4 , add it to the mixture of 0.8 mL HCOOH and 8 mL DMF, and ultrasonically disperse it into a uniform UiO-66-NH 2The precursor solution was transferred to a 25 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 120 °C for 24 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 a partially cross-linked amino-functionalized metal-organic framework (UiO-66-NH 2 ).

[0044] 2. Weigh 100 mg of GO into 200 mL of Tris buffer solution (pH 8.5), ultrasonically disperse it into a uniform GO solution, add 50 mg of dopamine hydrochloride to the GO solution, and place it in an ice-water bath for ultrasonicatio...

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Abstract

The invention belongs to the technical field of membranes and particularly relates to a polymer hybrid proton exchange membrane modified by metal organic framework structures and a preparation method of the membrane. The connected amino functional metal organic framework structures (I-MOF-NH2) are formed by fixing partially-cross-linked MOF-NH2 to the surface of a two-dimensional nanosheet layer material (2D NSs), and then the metal organic framework structures are doped in polymer to obtain the polymer hybrid proton exchange membrane modified by the connected amino functional metal organic framework structures. The proton exchange membrane has excellent proton conductivity under high-temperature and low-temperature conditions, is low in fuel permeability, and has extremely good use stability. The method is simple in operation process, preparation conditions are mild, production cost is low, batched large-scale production is convenient, industrial production bases are good, and application prospects are wide.

Description

technical field [0001] The invention belongs to the field of membrane technology, in particular to a metal organic framework structure (I-MOF-NH 2 ) modified polymer hybrid proton exchange membrane and its preparation method. Background technique [0002] Proton exchange membrane fuel cell has become one of the most competitive alternative power sources for internal combustion engines, and it has excellent performances such as high efficiency and no pollution. The proton exchange membrane is one of its core components. It not only provides a channel for the migration and transport of protons, but also effectively blocks the permeation of fuel from the anode to the cathode. Among them, the proton conductivity is one of the most important parameters to measure the performance of the proton exchange membrane, and improving the proton conductivity is an effective means to obtain a high-performance proton exchange membrane fuel cell. [0003] Metal-organic frameworks (MOFs) hav...

Claims

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Application Information

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IPC IPC(8): C08J5/22H01M8/1023H01M8/1025H01M8/103H01M8/1081
CPCC08J5/2256C08J5/2262C08J2300/102C08J2300/104C08J2361/16C08J2379/04C08J2379/08H01M8/1023H01M8/1025H01M8/103H01M8/1081Y02E60/50Y02P70/50
Inventor 饶壮汤蓓蓓武培怡
Owner FUDAN UNIV
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