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Composite proton exchange membrane synthesizing method for fuel cell

A proton exchange membrane and fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as high cost and reduced mechanical strength, and achieve the effects of improving battery performance, good compactness, and reducing dosage

Active Publication Date: 2006-10-11
SUNRISE POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] In order to overcome the above-mentioned proton exchange membrane for fuel cells, especially perfluorosulfonic acid Nafion  The high cost of a series of membranes, the swelling of the membrane by hot water leads to the problem of reduced mechanical strength, the present invention provides a synthesis method of a composite proton exchange membrane for a high-performance fuel cell with simple operation; and the composite membrane has good compactness and mechanical strength Good, low cost, suitable for fuel cells, proton exchange membranes for solid electrolyte water electrolysis

Method used

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  • Composite proton exchange membrane synthesizing method for fuel cell
  • Composite proton exchange membrane synthesizing method for fuel cell
  • Composite proton exchange membrane synthesizing method for fuel cell

Examples

Experimental program
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Embodiment 1

[0046] Cutting area is the polytetrafluoroethylene porous film of 15cm * 15cm, porous PTFE film thickness 50 μ m, (weight concentration 37%) nitric acid boils 0.5 hour at 50 ℃, then uses (weight concentration 98%) sulfuric acid to boil 1 hour at 50 ℃ . Wash with deionized water until neutral, and soak in ethanol for later use.

Embodiment 2

[0048] Cutting area is the polytetrafluoroethylene porous membrane of 15cm * 15cm, porous PTFE membrane thickness 50 μ m, (weight concentration 10%) hypochlorous acid boils 0.5 hour at 50 ℃, then uses (weight concentration 75%) sulfuric acid to boil at 50 ℃ 1 hour. Wash with deionized water until neutral, and soak in ethanol for later use.

Embodiment 3

[0050] Cutting area is the polytetrafluoroethylene porous membrane of 15cm * 15cm, porous PTFE membrane thickness 50 μ m, (weight concentration 20%) carbonic acid boils 0.5 hour at 50 ℃, then uses (weight concentration 10%) nitric acid to boil 1 hour at 50 ℃ . Wash with deionized water until neutral, and soak in ethanol for later use.

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Abstract

The related synthesis method for composite proton exchange membrane on fuel cell comprises: taking surface modification to the porous teflon membrane to reduce water contact angle and enhance wettability, and dipping into mid / low-boiling point solvent for standby; sealing and heating the solid macromolecular electrolyte with high-boiling point solvent, and adding mid / low boiling point solvent to prepare solution; casting on the film, and heating to volatilize the solvent for crystallizing heat treatment. This invention has well physical and chemical performance.

Description

technical field [0001] The invention relates to the fields of fuel cell key materials and solid electrolyte (SPE) water electrolysis, in particular to a synthesis method of a high-performance, low-cost fuel cell and solid electrolyzed water (SPE) water electrolysis compound reinforced proton exchange membrane. Background technique [0002] The use of fossil fuels emits a large amount of pollutants, leading to environmental pollution problems. The development of new clean energy has attracted great attention from governments and business circles around the world. Proton exchange membrane fuel cell (PEMFC) is a power generation device that directly converts chemical energy in fuel and oxidant into electrical energy through electrochemical reactions, and has the advantages of high energy conversion efficiency and environmental friendliness. Currently, fuel cell technology has entered the demonstration stage. However, there are many obstacles in the process of fuel cell commerc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/94
CPCY02E60/50
Inventor 张华民朱晓兵张宇李明强衣宝廉
Owner SUNRISE POWER CO LTD
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