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Proton exchange membrane for fuel cell and preparation method thereof

A proton exchange membrane, fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve problems such as poor durability of proton exchange resins, and achieve excellent scavenging of free radicals, protection of proton membranes, and elimination of attacks.

Active Publication Date: 2021-06-15
河南惠强新能源材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the proton exchange resin obtained by this method is slightly less durable

Method used

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  • Proton exchange membrane for fuel cell and preparation method thereof
  • Proton exchange membrane for fuel cell and preparation method thereof
  • Proton exchange membrane for fuel cell and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0063] The preparation method of described modified material comprises the following steps:

[0064] Mix the inorganic material and polar solvent, heat to 60-150° C., then add the organosilane coupling agent, adjust the pH value, react for 1h-5h, and dry to obtain a solid.

[0065] Preferably, the polar solvent is selected from one or more of N,N-dimethylformamide (DMF), dimethylacetamide (DMAc), dimethylsulfoxide (DMSO) and toluene.

[0066] In particular, when using organosilanes containing amino groups to treat inorganic materials, it is preferable to add ammonia water dropwise to adjust the pH of the reaction solution to 8-11; , preferably dropwise adding glacial acetic acid to adjust the pH of the reaction solution to 3-6.

[0067] When the organosilane coupling agent contains a mercapto functional group, the preparation method of the modified material also includes:

[0068] Add an oxidizing agent to the solid, raise the temperature to 60-90°C, and stir for 0.5h-5h to ...

Embodiment 1

[0078] The average particle size of the cerium oxide in Example 1 is about 30nm, and the surface contains about 3% of hydroxyl groups, about 96% of +4-valent cerium and about 4% of +3-valent cerium on the surface.

Embodiment 2

[0079] The average particle size of the nickel oxide in Example 2 is about 60nm, and the surface contains about 5% of hydroxyl groups in mole fraction, about 92% of +3-valent nickel and about 8% of +2-valent nickel in mole fraction.

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Abstract

The invention relates to a proton exchange membrane for a fuel cell and a preparation method thereof. The raw material of the proton exchange membrane includes proton exchange resin and modified material; the raw material of the modified material includes inorganic material and organic silane coupling agent; the inorganic material is selected from metal oxide or metal hydroxide; the In the metal oxide, the stable valence state of the metal element with a mole fraction of 80%-99.99% and the unstable valence state of the metal element with a mole fraction of 0.01%-20% are included; in the metal hydroxide , comprising a stable valence state of the metal element with a mole fraction of 80%-99.99% and an unstable valence state of the metal element with a mole fraction of 0.01%-20%. The proton exchange membrane not only has excellent mechanical strength, proton conductivity, etc., but also has excellent durability and long service life.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a proton exchange membrane for fuel cells and a preparation method thereof. Background technique [0002] Fuel cell is a new type of power generation device that directly converts chemical energy into electrical energy through electrochemical reaction. It does not go through the Carnot cycle and has very high energy conversion efficiency. It is a clean, safe and efficient power generation technology. Due to its convenience, low operating temperature, safety and high efficiency, proton exchange membrane fuel cells have great application prospects in the field of transportation. Among them, the proton exchange membrane is generally a solid organic electrolyte membrane, and its function is to isolate fuel and oxidant, transfer protons (H + ). [0003] The catalyst often used in proton exchange membrane fuel cells is a Pt / C composite catalyst, which catalyzes the fuel gas H 2 with oxidan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1051H01M8/1069H01M8/1088
CPCH01M8/1051H01M8/1069H01M8/1088Y02E60/50
Inventor 黄维邱钧锋张伟
Owner 河南惠强新能源材料科技股份有限公司
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