A kind of liquid glass composite proton exchange membrane for fuel cell and its preparation method

A proton exchange membrane and liquid glass technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of electrolyte membrane corrosion, holes, and short service life, and achieve the effect of preventing oxidation corrosion and improving service life

Active Publication Date: 2018-11-09
奥斯汀科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the defects that the existing proton exchange membrane is easy to be oxidized or decomposed, which leads to gradual erosion of the electrolyte membrane, holes, easy short circuit and short service life, the present invention proposes a liquid glass composite proton exchange membrane for fuel cells and its preparation method

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  • A kind of liquid glass composite proton exchange membrane for fuel cell and its preparation method

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Embodiment 1

[0029] A method for preparing a liquid glass composite proton exchange membrane for a fuel cell, the steps are as follows:

[0030] a. Take the sulfonated aromatic polymer, freeze it in liquid nitrogen for 12 minutes, and use a supersonic impact plate jet mill at an air velocity of 5m 3 / min and the rotating speed of the classifier is 2600r / min to carry out the miniaturization treatment, the miniaturization treatment time is 20min, and the fine powder with a particle size of 1-100nm is obtained; the sulfonated aromatic polymer is sulfonated polyetheretherketone, sulfonated At least one of sulfonated polyether sulfone and sulfonated polyarylether nitrile ketone;

[0031] b. Add the fine powder obtained in step a into the silica sol, add a dispersant and a solvent, and use a magnetic stirrer to stir to obtain a jelly. The stirring rate is 250r / min, and the stirring time is 2h; the dispersant is three At least one of sodium polyphosphate, sodium hexametaphosphate or sodium pyrop...

Embodiment 2

[0041] A method for preparing a liquid glass composite proton exchange membrane for a fuel cell, the steps are as follows:

[0042] a. Take the sulfonated aromatic polymer, freeze it in liquid nitrogen for 10 minutes, and use a supersonic impact plate jet mill at an air velocity of 10m 3 / min and the rotating speed of the classifier is 2500r / min to carry out the miniaturization treatment, the miniaturization treatment time is 30min, and the fine powder with a particle size of 1-100nm is obtained; the sulfonated aromatic polymer is sulfonated polyether ether ketone, sulfonated At least one of sulfonated polyether sulfone and sulfonated polyarylether nitrile ketone;

[0043] b. Add the fine powder obtained in step a into the silica sol, add a dispersant and a solvent, and use a magnetic stirrer to stir to obtain a jelly. The stirring rate is 200r / min, and the stirring time is 3h; the dispersant is three At least one of sodium polyphosphate, sodium hexametaphosphate or sodium py...

Embodiment 3

[0048] A method for preparing a liquid glass composite proton exchange membrane for a fuel cell, the steps are as follows:

[0049] a. Take the sulfonated aromatic polymer, freeze it in liquid nitrogen for 30 minutes, and use a supersonic impact plate jet mill at an air velocity of 3m 3 / min and the rotating speed of the classifier is 2600r / min to carry out the micronization treatment, the micronization treatment time is 18min, and the fine powder with a particle size of 1-100nm is obtained; the sulfonated aromatic polymer is sulfonated polyether ether ketone, sulfonated At least one of sulfonated polyether sulfone and sulfonated polyarylether nitrile ketone;

[0050] b. Add the fine powder obtained in step a into the silica sol, add a dispersant and a solvent, and use a magnetic stirrer to stir to obtain a jelly. The stirring rate is 200r / min, and the stirring time is 3h; the dispersant is three At least one of sodium polyphosphate, sodium hexametaphosphate or sodium pyropho...

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Abstract

The invention belongs to the technical field of composite proton exchange membranes for fuel cells and particularly relates to a liquid glass composite proton exchange membrane for a fuel cell and a preparation method. The preparation method is characterized by comprising the following steps: micronizing a sulfonated aromatic polymer under the freezing condition to nanoscale; then dispersing the micronized sulfonated aromatic polymer into silica sol to form gel; brushing the gel on a film supporting plate to form a thin layer with the size of 50 to 200 microns, drying, demolding and further spraying a liquid glass layer with the thickness of 3 to 5 microns on the surface, and carrying out heat setting to obtain the glass proton exchange membrane for the fuel cell. According to the liquid glass composite proton exchange membrane disclosed by the invention, a hydrophilic ultrathin highly-flexible interlayer is formed on the surface of the proton exchange membrane by using the liquid glass; the proton exchange membrane disclosed by the invention has remarkable functions of heat resistance, acid resistance and oxidation resistance and can be effectively prevented from being oxidized and corroded, so that the service life of the proton exchange membrane is greatly prolonged; meanwhile, the liquid glass composite proton exchange membrane has the advantages of excellent proton conductivity, high water resistance, excellent mechanical properties and methanol diffusion resistance.

Description

technical field [0001] The invention belongs to the technical field of proton exchange membrane preparation for fuel cells, and in particular relates to a liquid glass composite proton exchange membrane for fuel cells and a preparation method. Background technique [0002] Fuel cell is a clean energy technology device emerging in recent years, and it is a new generation of power generation technology after hydropower, thermal power and nuclear power generation. It is a high-efficiency continuous power generation device that directly converts the chemical energy of fuel and oxidant into electrical energy by means of electrochemical reaction without combustion. Usually a fuel cell consists of an anode, a cathode, and an electrolyte between the two electrodes. Continuously pass a fuel gas on the anode side, such as H 2 、CH 4 , gas, etc., the cathode side is fed with O 2 Or air, through the proton conduction of the electrolyte, electron transfer occurs between the cathode an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1018H01M8/1069H01M8/1086
CPCH01M8/1018H01M8/1069H01M8/1086Y02E60/50
Inventor 陈庆曾军堂
Owner 奥斯汀科技有限公司
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