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MOF material, preparation method thereof, proton exchange membrane, preparation method thereof, and fuel cell

A proton exchange membrane, MOF technology, used in fuel cells, circuits, electrical components, etc., can solve problems such as low proton conductivity, and achieve the effect of stabilizing proton transport performance

Active Publication Date: 2021-12-10
深圳氢时代新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Sulfonated polyethersulfone (SPES) is a synthetic polymer with aromatic and heteroaromatic rings, which has a very high glass transition temperature (425°C ~ 436°C) and excellent chemical and thermal stability, however, SPES Membrane exhibits low proton conductivity under low humidity conditions

Method used

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  • MOF material, preparation method thereof, proton exchange membrane, preparation method thereof, and fuel cell
  • MOF material, preparation method thereof, proton exchange membrane, preparation method thereof, and fuel cell
  • MOF material, preparation method thereof, proton exchange membrane, preparation method thereof, and fuel cell

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preparation example Construction

[0041]The present invention also provides a preparation method for the above-mentioned MOF material, mainly using a solvothermal method, specifically comprising the following steps:

[0042] Step 1: Mix metal titanium salt, dibenzofuran-2-yl-pyridin-4-ylmethyl-amine and 4-methyl-2-(pyridin-3-yl)-oxazole in a solvent to obtain Mixture.

[0043] In a practicable embodiment, the solvent is water, and the metal titanium salt is a water-soluble metal titanium salt, that is, titanium ions can be formed in an aqueous solution, and the mixed solution is adjusted to be alkaline, so that the metal titanium ions can form hydroxide substances, participating in solvothermal reactions.

[0044] Specifically, in this embodiment, the metal titanium salt is TiCl 2 , the pH value of the mixed solution is 8-10, specifically, it can be 8, 9 or 10, and the pH of the mixed solution can be adjusted with an alkaline solution, such as NaOH, KOH or ammonia water.

[0045] Step 2: placing the mixed s...

Embodiment 1

[0060] 1) Take 0.3mmol TiCl 2 , 0.1mmol A and 0.3mmol B were dispersed in 40ml of distilled water, fully stirred at ambient temperature for 2 hours, and the pH value was adjusted to 8 with NaOH aqueous solution to obtain a suspension.

[0061] 2) the suspension is sealed in a 50ml stainless steel reaction vessel lined with polytetrafluoroethylene, heated in a 443K oven for solvothermal reaction, and the reaction is carried out for 4 days under autogenous pressure and static conditions, then the container is placed in the oven with Cooling slowly at 5K per hour to 298K, and then turning it back on, collected the MOF material as yellow crystals.

[0062] 3) The yellow crystals were vacuum-dried in a vacuum oven at 90°C for 24 hours to obtain a white solid, which was the final MOF material.

[0063] 4) Put PES powder (polyethersulfone, trade name: PES Ultrason E6020P, Mw=58,000g / mol) in a glass reactor, add 98% concentrated sulfuric acid and dimethylacetamide (DMAC) solvent, sti...

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Abstract

The invention discloses an MOF material, a preparation method thereof, a proton exchange membrane, a preparation method thereof and a fuel cell. The MOF material is formed by metal titanium, dibenzofuran-2-yl-pyridine-4-yl methyl-amine and 4-methyl-2-(pyridine-3-yl)-oxazole through coordination. The MOF material is doped into a polymer substrate to obtain the MOF and polymer composite proton exchange membrane. The MOF material disclosed by the invention has good proton conductivity.

Description

technical field [0001] The invention relates to the technical field of fuel cells, more specifically, to a MOF material and a preparation method thereof, a proton exchange membrane and a preparation method thereof, and a fuel cell. Background technique [0002] High-temperature proton exchange membrane fuel cells (HT-PEMFC), capable of operating in the range of 160°C to 200°C without humidity, have been the focus of intensive research efforts. Benefits of working at high temperatures include reduced catalyst poisoning, faster electrode kinetics, and easier water and thermal management. [0003] Sulfonated polyethersulfone (SPES) is a synthetic polymer with aromatic and heteroaromatic rings, which has a very high glass transition temperature (425°C ~ 436°C) and excellent chemical and thermal stability, however, SPES The membrane exhibits low proton conductivity under low humidity conditions. [0004] Metal-organic framework (MOF) material is a crystalline material with high...

Claims

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Application Information

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IPC IPC(8): H01M8/1016H01M8/1018H01M8/124
CPCH01M8/1016H01M8/1018H01M8/124H01M2008/1095H01M2008/1293Y02E60/50
Inventor 王廷宏肖森林宁伟马杰
Owner 深圳氢时代新能源科技有限公司
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