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A kind of fuel cell proton exchange membrane and preparation method thereof

A proton exchange membrane and fuel cell technology, which is applied to fuel cells, fuel cell parts, solid electrolyte fuel cells, etc., can solve problems such as short service life, achieve low cost, prevent dissolution and loss, and have stable quality effects

Active Publication Date: 2016-10-19
深圳国氢新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims at the defects that most heteropolyacid-doped proton exchange membranes currently have heteropolyacids are easily lost with the loss of water in the fuel cell, resulting in a rapid decrease in the proton conductivity of the proton exchange membrane and a short service life, and provides A fuel cell proton exchange membrane. Compared with other fuel cell proton exchange membranes, the present invention adds a modifier to modify the heteropoly acid, and then adds it to the proton conductive matrix resin to keep the heteropoly acid The original proton conductivity of the acid can prevent it from being lost together with water. The proton exchange membrane has the advantages of high proton conductivity and long service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Completely dissolve 25 parts by weight of H5GaW12O40 with an appropriate amount of distilled water to form a solution, add 10 parts by weight of polyacrylamide, at a temperature of 80 ° C, a stirring speed of 150 r / min and the conditions of ultraviolet light irradiation Down reaction 0.5h, pressure filtration, and vacuum drying obtain heteropolyacid modified compound A;

[0031] 2) After completely dissolving 55 parts by weight of sulfonated polyethersulfone with an appropriate amount of dimethylamide, add the heteropoly acid modified compound A obtained in step 1) and barium sulfate fiber with 15 parts by weight, and stir to mix evenly Obtain casting solution;

[0032] 3) The casting solution obtained in step 2) is cast into a film-forming method to make a proton exchange membrane with a thickness of 0.5 mm.

Embodiment 2

[0034]1) Dissolve 40 parts by weight of H2PtW11O36 completely with an appropriate amount of distilled water to form a solution, add 25 parts by weight of polyoxyethylene lauryl ether, at a temperature of 95 ° C, a stirring speed of 200 r / min and ultraviolet light Reaction for 1h under irradiation conditions, press filtration, and vacuum drying to obtain heteropolyacid modified compound A;

[0035] 2) After completely dissolving 35 parts by weight of sulfonated polyether ether ketone with an appropriate amount of ethylenediamine, add the heteropolyacid modified compound A obtained in step 1) and 5 parts by weight of fluorocarbon polymer fiber, stir and mix After being uniform, the casting solution is obtained;

[0036] 3) The casting solution obtained in step 2) is cast into a film-forming method to make a proton exchange membrane with a thickness of 0.5 mm.

Embodiment 3

[0038] 1) 30 parts by weight of H7As2W18O62 was completely dissolved with an appropriate amount of distilled water to form a solution, and 15 parts by weight of diglycerin polypropylene glycol was added. Reaction under conditions for 0.5h, pressure filtration, and vacuum drying to obtain heteropolyacid modified compound A;

[0039] 2) After completely dissolving 45 parts by weight of sulfonated polybenzimidazole with an appropriate amount of isopropanol, add the heteropoly acid modified compound A obtained in step 1) and silicon carbide fiber with 9 parts by weight, and stir and mix evenly Obtain casting solution;

[0040] 3) The casting solution obtained in step 2) is cast to form a proton exchange membrane with a thickness of 1 mm.

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Abstract

A fuel cell proton exchange membrane and a preparation method thereof. The invention modifies the heteropolyacid, and then adds it into the proton conductive matrix resin, which not only maintains the original proton conductivity of the heteropolyacid, but also prevents it from being lost together with water. The proton exchange membrane has high proton conductivity , the advantages of long service life, and the method can be industrialized on a large scale, with stable quality, and is suitable for popularization and application of fuel cell pairs.

Description

technical field [0001] The invention relates to the field of fuel cell proton exchange membranes, in particular to a fuel cell proton exchange membrane and a preparation method thereof. Background technique [0002] The proton exchange membrane is one of the key components in the proton exchange membrane fuel cell (PEMFC). The effect of conduction protons on electronic insulation. The performance of the proton exchange membrane directly affects the performance of the fuel cell, and is also one of the key issues restricting the large-scale commercial operation of the fuel cell. With the in-depth research and development of proton exchange membranes, in order to improve the proton conductivity of proton exchange membranes, many methods have been proposed, such as: modifying the proton conductive matrix resin to improve its proton conductivity, adding high-efficiency Substances with proton conductivity, the development of new proton conductive materials, etc. have also made s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1046H01M8/1048H01M8/1051H01M8/1069H01M8/1088C08J5/22H01M8/0202H01M8/1016H01M8/1018
CPCH01M8/02H01M8/10C08J5/22Y02P70/50Y02E60/50
Inventor 陈庆李兴文
Owner 深圳国氢新能源科技有限公司