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Preparation method of alkaline anion-exchange membrane for fuel cell

An alkaline anion and fuel cell technology, applied in the direction of fuel cells, circuits, electrical components, etc., can solve the problems of high material cost, reduced fuel cell power generation performance, low ion conductivity, etc., and achieve excellent technical effects and voltage decay rate Reduced effect

Active Publication Date: 2017-02-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation of quaternary ammonium polymers in basic anion exchange membranes usually undergoes multiple complex steps such as chloromethylation, quaternization, and alkalization, or methods such as radiation grafting of quaternary ammonium groups on the polymer matrix. Complicated preparation process and high cost of materials
Compared with proton exchange membrane fuel cells, alkaline anion exchange membrane fuel cells also have the problem of low ion conductivity, which will directly reduce the power generation performance of fuel cells, but the above research has not solved this problem

Method used

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  • Preparation method of alkaline anion-exchange membrane for fuel cell
  • Preparation method of alkaline anion-exchange membrane for fuel cell
  • Preparation method of alkaline anion-exchange membrane for fuel cell

Examples

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Embodiment 1

[0027] The process of preparing the basic anion exchange membrane of this example is:

[0028] 1) Dissolve 5g of PVA powder in 30 mL of deionized aqueous solution, heat to 80-95 degrees Celsius, and stir for 2.5-3 hours to obtain PVA gel;

[0029]2) Take 2.5g AER basic resin and soak it in 20 mL sodium chloride aqueous solution for 0.5 hours, the concentration of sodium chloride aqueous solution is 1M; then transfer AER basic resin together with sodium chloride aqueous solution to an insulated container, and pour into the container Inject liquid nitrogen to cool the AER basic resin to minus 50 degrees Celsius, grind and crush the AER basic resin particles for 15 minutes; then stop the liquid nitrogen freezing treatment, and after the temperature naturally returns to room temperature, filter the contents of the container with a 120-mesh filter Filter, get the AER basic resin fine powder that can pass through the filter mesh hole for subsequent use;

[0030] 3) Add the fine pow...

Embodiment 2

[0034] The difference between the process of preparing the alkaline anion exchange membrane of this example and Example 1 is that the inorganic salt used in step 2) is CoSO 4 , with a concentration of 0.1 M, the AER basic resin was placed in CoSO 4 Soaking time in aqueous solution is 1 hour, grinding time is 1 hour, other parameters are the same

Embodiment 3

[0038] The difference between the process of preparing the alkaline anion exchange membrane of this example and Example 1 is: step 2) the concentration of the sodium chloride aqueous solution is 5 M, the soaking time of the AER basic resin in the sodium chloride aqueous solution is 0.1 hour, and the grinding time is 0.5 hours, the filter screen is 80 mesh, and other parameters are the same.

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Abstract

The invention discloses a preparation method of an alkaline anion-exchange membrane. The preparation method comprises the treatment process on alkaline resin, and the treatment process comprises the steps that AER alkaline resin is placed in an inorganic salt aqueous solution for soaking, then the AER alkaline resin and the inorganic salt aqueous solution are transferred to a heat-insulated vessel, liquid nitrogen is injected into the vessel for cooling, and AER alkaline resin particles are fully ground and crushed; liquid nitrogen freezing treatment is stopped, when the temperature is naturally recovered to room temperature, materials in the vessel are filtered with a filter screen, and fine alkaline resin powder is obtained. The fine alkaline resin powder serves as anion exchange resin of a chemical active group to prepare the alkaline anion-exchange membrane. By means of the resin treatment process, the AER alkaline resin particles can be uniformly distributed in the prepared anion-exchange membrane, the electrochemical performance of the alkaline anion-exchange membrane is further improved, and a fuel cell assembled through the alkaline anion-exchange membrane prepared through the method shows the excellent electricity generation performance.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to an alkaline anion exchange membrane in a polymer electrolyte membrane fuel cell and a preparation method thereof. Background technique [0002] As a special device that converts chemical energy into electrical energy, a fuel cell is considered to be a One of the most promising and environmentally friendly new chemical power sources. Among them, the polymer electrolyte membrane fuel cell effectively overcomes the problems of fuel leakage, and has the advantages of fast start-up and fast response to load changes. It has attracted more and more attention and has become a recent research hotspot. [0003] Polymer electrolyte membrane fuel cells use polymer electrolyte membranes as solid electrolytes to separate cathode and anode and conduct protons (H + ) or hydroxide ion (OH - ) is a key component in polymer electrolyte fuel cells. The performance of the polymer electrolyte membrane pl...

Claims

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Application Information

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IPC IPC(8): H01M8/1069
CPCH01M8/1069Y02E60/50
Inventor 褚雯董泽熹盛欢欢蒋伟诸才胡勇平秦海英刘嘉斌
Owner ZHEJIANG UNIV
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