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Preparation method of alkaline fuel cell exchange membrane

A technology of fuel cells and exchange membranes, applied in the field of exchange membranes, to achieve high conductivity, ensure alkali stability, and excellent alkali stability

Inactive Publication Date: 2021-12-10
深圳茂源新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also some defects in anion exchange membranes. For example, while improving the conductivity of the exchange membrane, it is also necessary to ensure the alkali stability of the membrane. Therefore, it is of great significance to prepare an anion exchange membrane with high conductivity and high stability.

Method used

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  • Preparation method of alkaline fuel cell exchange membrane
  • Preparation method of alkaline fuel cell exchange membrane
  • Preparation method of alkaline fuel cell exchange membrane

Examples

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Effect test

Embodiment 1

[0024] A preparation method of an alkaline fuel cell exchange membrane, specifically comprising the steps of:

[0025] S1: Place polyphenylene ether (PPO) in an oven at 100°C for 10 minutes to dry, then take it out of the oven, and let it cool to room temperature.

[0026] S2: Put the polyphenylene ether dried in step S1 into a three-necked round-bottomed flask, add chlorobenzene and magneton, wherein the molar ratio of PPO to chlorobenzene is 1:1.2, in order to prevent bumping, add zeolite, and turn on the magnetic stirring Switch on and off at 40°C to make the PPO fully dissolved by magnetic stirring.

[0027] S3: Dilute liquid bromine with chlorobenzene to obtain a solution, then add it to the dropping funnel, place the dropping funnel on the three-neck round bottom flask in step S2, and slowly add it to the uniformly dissolved polyphenylene ether solution for bromination reaction , wherein the nitrogen gas was continuously fed during the whole reaction process, first reac...

Embodiment 2

[0033] A preparation method of an alkaline fuel cell exchange membrane, specifically comprising the steps of:

[0034] S1: Place the polyphenylene ether (PPO) in an oven at 100°C for 30 minutes to dry, then take it out of the oven, and let it cool to room temperature.

[0035] S2: Put the polyphenylene ether dried in step S1 into a three-necked round-bottomed flask, add chlorobenzene and magneton, wherein the molar ratio of PPO to chlorobenzene is 1:2, in order to prevent bumping, add zeolite, and turn on the magnetic stirring Switch on and off at 50°C to make the PPO fully dissolved by magnetic stirring.

[0036] S3: Dilute liquid bromine with chlorobenzene to obtain a solution, then add it to the dropping funnel, place the dropping funnel on the three-neck round bottom flask in step S2, and slowly add it to the uniformly dissolved polyphenylene ether solution for bromination reaction , in which nitrogen gas was continuously fed during the whole reaction process, first react...

Embodiment 3

[0042] A preparation method of an alkaline fuel cell exchange membrane, specifically comprising the steps of:

[0043] S1: Place polyphenylene ether (PPO) in an oven at 100°C for 20 minutes to dry, then take it out of the oven, and let it cool to room temperature.

[0044] S2: Put the polyphenylene ether dried in step S1 into a three-necked round-bottomed flask, add chlorobenzene and magneton, wherein the molar ratio of PPO to chlorobenzene is 1:1.5, in order to prevent bumping, add zeolite, and turn on the magnetic stirring Switch on and off, at 45°C, let the magnetic sub-stirring PPO fully dissolve.

[0045] S3: Dilute liquid bromine with chlorobenzene to obtain a solution, then add it to the dropping funnel, place the dropping funnel on the three-neck round bottom flask in step S2, and slowly add it to the uniformly dissolved polyphenylene ether solution for bromination reaction , in which nitrogen gas was continuously fed during the whole reaction process, first reacted a...

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Abstract

The invention discloses a preparation method of an alkaline fuel cell exchange membrane. The method comprises the following steps: synthesizing brominated poly (2, 6-dimethyl-1, 4-phenylate) (BPPO) by using polyphenylene oxide (PPO); synthesizing an imidazolium ionic liquid by using 1, 6-dibromohexane and 2-methyl-4-ethylimidazole; then mixing the BPPO and the imidazolium ionic liquid, and carrying out a reaction so as to prepare precursor sol; and gelatinizing on a glass plate with a groove, so as to obtain the bis-imidazolyl cross-linked anion exchange membrane. The prepared bis-imidazolyl cross-linked anion exchange membrane has the advantages of high conductivity, high stability and the like, and the conductivity of the bis-imidazolyl cross-linked anion exchange membrane at 80 DEG C reaches 115 mS / cm.

Description

technical field [0001] The invention belongs to the field of exchange membranes, and in particular relates to a preparation method of an alkaline fuel cell exchange membrane. Background technique [0002] Proton exchange membrane fuel cell is an energy conversion device that uses hydrogen as fuel and proton exchange membrane as electrolyte. Among them, the proton exchange membrane fuel cell is composed of catalyst, electrode, proton exchange membrane, electrolyte and bipolar plate and other components. Although proton exchange membrane fuel cells have the characteristics of high efficiency, environmental friendliness, high power density, and rapid start-up, there are some shortcomings, such as: high dependence on water, high cost of membrane electrodes, and high methanol permeability. With the continuous advancement of research, alkaline fuel cells began to be produced, which is a kind of energy conversion device that uses hydrogen as fuel and potassium hydroxide or strong ...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/94
CPCH01M4/88H01M4/94Y02E60/50
Inventor 郑维亮
Owner 深圳茂源新材料科技有限公司
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