Preparation method of proton exchange membrane applied to proton exchange membrane fuel cell

A proton exchange membrane and fuel cell technology, applied in the field of physics, can solve the problems of poor stability of Nafion membrane, complex synthesis route, high temperature performance decline, etc., to increase hydrophilic water retention capacity, simple production, and reduced dependence on water content Effect

Inactive Publication Date: 2019-05-17
上海杰好生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of preparation method of fuel cell proton exchange membrane, the preparation method of described this proton exchange membrane fuel cell proton exchange membrane will solve Nafion membrane stability in the prior art, cost is high, The technical problems of complex synthesis route, serious decline in high temperature performance and low alcohol inhibition rate

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of preparation method of proton exchange membrane for proton exchange membrane fuel cell (PEMFC), concrete steps are as follows:

[0016] (1) Dissolve 50g PVDF in 200g NMP to make glue.

[0017] (2) Add 5g of ZIFs to the glue solution prepared in step (1), and then stir evenly to obtain a mixed glue solution of ZIFs / PVDF / NMP.

[0018] (3) Place the mixed glue solution obtained in step (2) horizontally to form a membrane, and then place the obtained membrane in deionized water to obtain a proton exchange membrane.

[0019] The resulting proton exchange membrane has a thickness of 150um and a density of 450g / m 2 , the conductivity is 0.08S / cm, and the exchange capacity is 0.95meq / g.

Embodiment 2

[0021] A kind of preparation method of proton exchange membrane for proton exchange membrane fuel cell (PEMFC), concrete steps are as follows:

[0022] (1) Dissolve 50g PVDF in 500g NMP to make glue.

[0023] (2) Add 5g of ZIFs to the glue solution prepared in step (1), and then stir evenly to obtain a mixed glue solution of ZIFs / PVDF / NMP.

[0024] (3) Place the mixed glue solution obtained in step (2) horizontally to form a membrane, and then place the obtained membrane in deionized water to obtain a proton exchange membrane.

[0025] The obtained proton exchange membrane has a thickness of 125um and a density of 370g / m 2 , the conductivity is 0.075S / cm, and the exchange capacity is 0.82meq / g.

Embodiment 3

[0027] A kind of preparation method of proton exchange membrane for proton exchange membrane fuel cell (PEMFC), concrete steps are as follows:

[0028] (1) Dissolve 20g PVDF in 230g NMP to make glue.

[0029] (2) Add 1 g of ZIFs to the glue prepared in step (1), and then stir evenly to obtain a mixed glue of ZIFs / PVDF / NMP.

[0030] (3) Place the mixed glue solution obtained in step (2) horizontally to form a membrane, and then place the obtained membrane in deionized water to obtain a proton exchange membrane.

[0031] The resulting proton exchange membrane has a thickness of 175um and a density of 360g / m 2 , the conductivity is 0.081S / cm, and the exchange capacity is 0.82meq / g.

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Abstract

The invention discloses a preparation method of a proton exchange membrane applied to a proton exchange membrane fuel cell. According to the preparation method, polyvinylidene fluoride is dissolved inan N-methyl pyrrolidone solvent to prepare a glue solution; ZIFs is added into the prepared glue solution, and then uniform stirring is performed to obtain a ZIFs / PVDF / NMP mixed glue solution, wherein the mass ratio of the mixture of polyvinylidene fluoride and N-methyl pyrrolidone to ZIFs is 1:0.004-0.02; and the obtained mixed glue solution is placed horizontally to flow flat and form a membrane, and then the obtained membrane is placed in deionized water to obtain the proton exchange membrane. Through the preparation method, the metal organic framework material ZIFs is used as a proton conducting component of the proton exchange membrane, and an acid catalyzed polymerization method is adopted to prepare the proton exchange membrane material with high conductivity; and the method is simple in preparation and low in cost, the dependency on temperature and water content is greatly lowered, and the method has quite high applicability.

Description

technical field [0001] The invention relates to the field of physics, in particular to proton exchange technology, in particular to a method for preparing a proton exchange membrane for a proton exchange membrane fuel cell. Background technique [0002] Proton exchange membrane fuel cells (PEMFCs) have attracted widespread attention due to their advantages of fast start-up, high energy conversion efficiency and zero pollution emissions, and have been applied in new energy vehicles, rechargeable batteries and other fields. The proton exchange membrane is the core component of the proton exchange membrane fuel cell, which plays two roles: as a diaphragm between the cathode and anode, it provides a transfer channel for proton conduction; and prevents the fuel gas from mixing with oxygen. At present, the commercial proton exchange membrane is mainly the Nafion membrane produced by DuPont Company. Due to its large number of sulfonic acid groups, the material itself has high pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1069H01M8/1072
CPCY02E60/50Y02P70/50
Inventor 归建明杨骥俞荣
Owner 上海杰好生物科技有限公司
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