Composite proton exchange membrane and preparation method thereof

A proton exchange membrane and proton exchange technology, applied in solid electrolyte fuel cells, fuel cells, electrochemical generators, etc., can solve the problems of proton exchange membrane fuel cell characterization and achieve low fuel permeability, high proton conductivity, The effect of low activation energy

Inactive Publication Date: 2012-04-25
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

P.T.Mather et al. [Macromolecules, 41(4569)2008], [Journal of Materials Chemistry, 20(6282)2010] proposed a method of filling the voids of fiber membranes with photocurable liquids, but they were not used in proton exchange membranes Fuel Cell Characterization

Method used

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  • Composite proton exchange membrane and preparation method thereof
  • Composite proton exchange membrane and preparation method thereof
  • Composite proton exchange membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A sulfonated polyaryletherketone proton exchange membrane material is dissolved in dimethylacetamide to prepare a solution for electrospinning with a mass fraction of 30%; polyethersulfone is dissolved in dimethylacetamide to prepare a mass fraction of 20% % solution for electrospinning; add the two prepared electrospinning solutions to the two spinnerets of the electrospinning device respectively, the spinneret moves back and forth at a speed of 1mm / s, a moving distance of 80mm, and a voltage of 30KV. The spinning temperature was 40°C, resulting in a chemically heterogeneous electrospun fiber membrane based on two fibers.

[0042] Immerse the obtained chemically heterogeneous electrospinning fiber membrane in a 1.5 mg / ml polydimethyldiallyl ammonium chloride aqueous solution, absorb and equilibrate for 10 minutes, wash with deionized water for 10 minutes, and blow dry in the air; The dried chemically heterogeneous electrospinning fiber membrane was immersed in a 1.5 mg...

Embodiment 2

[0045] The mixture of perfluorosulfonic acid resin Nafion and polyethylene oxide is prepared into methanol solution, the total mass fraction of perfluorosulfonic acid resin Nafion and polyethylene oxide in the solution is 40%, and the mass of polyethylene oxide is perfluorosulfonic acid resin Nafion 0.01% of the mass, polyethersulfone was dissolved in dimethylacetamide to prepare a solution with a mass fraction of 20%. The two solutions were respectively added to the two spinnerets of the electrospinning device, the spinneret moved back and forth at a speed of 1mm / s, a moving distance of 80mm, a voltage of 18KV, and spun under ambient temperature conditions to obtain a two-fiber-based spinneret. Chemically heterogeneous electrospun fiber membranes.

[0046] The obtained chemically heterogeneous electrospinning fiber membrane was immersed in a 1.5 mg / ml polydimethyldiallyl ammonium chloride aqueous solution, adsorbed and equilibrated for 10 minutes, washed with deionized water ...

Embodiment 3

[0049] The sulfonated polystyrene was dissolved in water to prepare an electrospinning solution with a mass fraction of 30%; polyethersulfone was dissolved in dimethylacetamide to prepare an electrospinning solution with a mass fraction of 20%; the prepared two The electrospinning solution was added to the two spinnerets of the electrospinning device respectively, the spinneret moved back and forth at a speed of 1mm / s, a moving distance of 80mm, a voltage of 16KV, and spun at ambient temperature to obtain a chemical based on the two fibers. Heterogeneous electrospun fiber membranes.

[0050] The obtained chemically heterogeneous electrospinning fiber membrane was immersed in a 1.5 mg / ml polydimethyldiallyl ammonium chloride aqueous solution, adsorbed and equilibrated for 10 minutes, washed with deionized water for 10 minutes, and dried in the air; Immerse the dried fiber membrane in a 1.5 mg / ml sodium polystyrene sulfonate aqueous solution, absorb and equilibrate for 10 minute...

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Abstract

The invention discloses a composite proton exchange membrane and a preparation method thereof. The preparation method for the composite proton exchange membrane comprises the following steps of: dissolving a soluble proton exchange resin A and a water insoluble high molecular polymer B to obtain solutions for electrostatic spinning; adding the solutions for the electrostatic spinning into two injectors of an electrostatic spinning device respectively, and performing the electrostatic spinning under electrostatic high pressure to obtain chemically-heterogeneous electrostatic spinning fiber membranes; modifying the chemically-heterogeneous electrostatic spinning fiber membranes by using an electrostatic self-assembly method to obtain a modified chemically-heterogeneous electrostatic spinning fiber membrane; dissolving the water insoluble high molecular polymer B in the modified chemically-heterogeneous electrostatic spinning fiber membrane by using a solvent, and dispersing and filling the dissolved water insoluble high molecular polymer B into gaps of the chemically-heterogeneous electrostatic spinning fiber membrane; and heating and drying the solvent to obtain the composite proton exchange membrane. The composite proton exchange membrane has high chemical stability, high proton conductivity and low proton conduction activation energy. The preparation method for the composite proton exchange membrane is simple and low in preparation cost.

Description

technical field [0001] The invention belongs to the field of proton exchange membrane materials, in particular to a composite proton exchange membrane and a preparation method thereof. Background technique [0002] Proton exchange membrane fuel cell is a kind of high-efficiency energy with fast start-up, high specific power, and environmental friendliness. It has a very broad application prospect in electric vehicles and portable power sources. The proton exchange membrane is one of the key components of the proton exchange membrane fuel cell. It must have the characteristics of high proton conductivity and stable chemical properties. Electrospinning is an effective method to prepare continuous fibers with high specific surface area by spraying polymer solutions or melts under a high-voltage electric field. Using the method of electrospinning, the proton exchange membrane material can be prepared into a fiber membrane with proton conductivity. These fibrous membranes exhib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10D01D5/00D04H1/728H01M8/1041
CPCY02E60/523Y02E60/522Y02E60/50
Inventor 孟跃中刘威王拴紧肖敏韩东梅
Owner SUN YAT SEN UNIV
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