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A kind of amphoteric ion exchange membrane for fuel cell and preparation method thereof

A amphoteric ion and fuel cell technology, applied in the field of ion exchange membrane and its preparation, can solve the problems of fuel penetration and low ion conductivity, and achieve the effects of improving fuel utilization, overcoming low ion conductivity, and good ion conductivity

Inactive Publication Date: 2019-10-11
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, basic anion exchange membranes also have two major disadvantages: low ion conductivity and severe fuel permeation.

Method used

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  • A kind of amphoteric ion exchange membrane for fuel cell and preparation method thereof
  • A kind of amphoteric ion exchange membrane for fuel cell and preparation method thereof
  • A kind of amphoteric ion exchange membrane for fuel cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Dissolve 1 g of nickel chloride powder in 50 mL of deionized water, heat and stir to obtain a nickel chloride solution; immerse anion exchange resin particles with a particle diameter of 50 microns in the nickel chloride solution for 1 hour and take out the particles; The particles were immersed in a sodium hydroxide solution with a concentration of 4 M, and stirred and reacted at 50 degrees Celsius for 12 hours; the particles were taken out and washed repeatedly to remove residual lye, and then dried at room temperature to obtain nickel oxyhydroxide-loaded anion exchange resin particles.

[0031] 2) Dissolve 1 g of PVA powder in 50 mL of deionized water, heat and stir at 80 degrees Celsius for 2 hours to obtain a PVA gel; add 5 mL of 4% Nafion solution to the PVA gel, heat and stir to obtain PVA-Nafion gel.

[0032] 3) Part of the PVA-Nafion gel is coated with a film with a thickness of 100 microns on the glass substrate by the film coating method, and dried natural...

Embodiment 2

[0038] The difference from Example 1 is that the amount of nickel chloride powder in step 1) is 5 g, and other parameters are the same.

Embodiment 3

[0040] The difference from Example 1 is that the diameter of the anion exchange resin particles is 500 microns, the thickness of the wet film coated in step 6) is 625 microns, and other parameters are the same.

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Abstract

The invention discloses an amphoteric ion exchange membrane for a fuel cell. The amphoteric ion exchange membrane employs polyvinyl alcohol and perfluorinated sulfonic acid resin as a membrane substrate, wherein negative ion exchange resin is intercalated into the membrane substrate in a particle mode, and nickel oxide hydroxide is loaded in the negative ion exchange resin particles. The invention also discloses a preparation method of the amphoteric ion exchange membrane. The preparation method comprises the steps of loading the nickel oxide hydroxide in the negative ion exchange resin particles, preparing gel of the membrane substrate comprising the polyvinyl alcohol and the perfluorinated sulfonic acid resin, forming the gel of the negative ion exchange resin intercalated into the membrane substrate in the particle mode, and further forming the amphoteric ion exchange membrane, wherein the additive proportion of the substrate membrane and the negative ion exchange resin is controlled by calculating positive ion conductivity s<positive> of the substrate membrane and negative ion conductivity s<negative> of the negative ion exchange resin particles during the preparation process. With the amphoteric ion exchange membrane prepared according to the method, the problems of low ion conductivity and fuel permeation of the negative ion exchange membrane are solved, and meanwhile, the problem that a proton exchange membrane shall employ precious metal as a catalyst is also solved.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to an ion 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 has the advantages of fast start-up and fast response to load changes, and 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 plays a decisive role in the power generation performance of the po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1041H01M8/1069H01M8/10
CPCH01M8/10H01M8/1041H01M8/1069H01M2008/1095Y02E60/50
Inventor 董泽熹蒋伟王紫旌刘锋王宣程陈宇麒吴睿知盛欢欢秦海英褚雯邓永红石桥曹伟刘嘉斌
Owner ZHEJIANG UNIV
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