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A kind of high temperature proton transport composite membrane for fuel cell and preparation method

A fuel cell and composite membrane technology, which is applied to fuel cell parts, fuel cells, battery pack parts, etc., can solve problems such as electrical conductivity decline, improve sealing performance, improve overall performance, and enhance toughness and plasticity. Effect

Inactive Publication Date: 2011-12-07
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This type of polymer exhibits high proton conductivity after sulfonation, but the sulfonate group of sulfonated polyaryletherketone (sulfone) will decompose at high temperature and its conductivity will decrease.

Method used

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  • A kind of high temperature proton transport composite membrane for fuel cell and preparation method
  • A kind of high temperature proton transport composite membrane for fuel cell and preparation method
  • A kind of high temperature proton transport composite membrane for fuel cell and preparation method

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preparation example Construction

[0029] The invention relates to a high-temperature proton transport composite membrane and a preparation method thereof. The membrane has good proton conductivity, high mechanical strength and stability, good alcohol resistance and processability in the temperature range of 150-350°C sex.

[0030] The present invention adopts following technical scheme:

[0031] Combining ammonium phosphate (base complex) with high proton conductivity and high thermal stability with sulfonated polyaryletherketone (sulfone) polymers with good mechanical strength, high thermal stability and alcohol resistance, combining the two Advantages to realize the preparation of new organic-inorganic high-temperature proton transport composite membranes.

[0032] The preparation of the high-temperature proton transport composite membrane can adopt the casting method: the ammonium polyphosphate (base complex) micro / nanoparticles are added to the sulfonated polyaryletherketone (sulfone) polymer solution, an...

Embodiment 1

[0038] 5g of sulfonated polyaryletherketone was dissolved in N-methylpyrrolidone to prepare a polymer solution with a volume concentration of 30%, and then 15g of (NH 4 ) 2 Si 0.5 Ti 0.5 P 4 o 13 Added to the polymer solution to form a suspension. Heating to 120°C and stirring for 5 hours (h), ultrasonication for 3 hours, and then using a casting method to obtain an organic-inorganic composite proton membrane, the obtained membrane was completely dried in an oven, and the thickness of the obtained membrane was 0.24mm. The impedance spectrum of the composite film is shown in figure 1 , the Arrhenius curve of conductivity as a function of temperature in humid hydrogen is shown in figure 2 .

Embodiment 2

[0040] 4.5g (NH 4 ) 2 Si 0.7 Ti 0.3 P 4 o 13 and 0.5g NH 4 PO 3 Add it to N, N-dimethylacetamide, stir for 40 minutes, and then sonicate for 2 hours to make it evenly mixed. Mix 5g of 20% by mass sulfonated polyarylethersulfone N-methylpyrrolidone solution with it, stir at 100°C at a speed of 250rpm for 6h, and then sonicate for 2h to obtain a uniformly distributed suspension, and then cast The organic-inorganic composite proton membrane was obtained by the method, and the obtained membrane was completely dried in an oven, and the thickness of the obtained membrane was 0.22 mm.

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Abstract

A high-temperature proton transport composite membrane for fuel cells is prepared by the following method: compounding ammonium polyphosphate and / or ammonium polyphosphate complex with sulfonated polyaryletherketone (sulfone) polymer solution to form proton transport Composite membrane; the mass concentration of ammonium polyphosphate or ammonium polyphosphate compound in the polymer solution is 10-95%; the polymer solution of sulfonated polyaryletherketone (sulfone) is sulfonated polyaryletherketone (sulfone) The polymer is dissolved in a polar solvent, and the volume concentration is 5-85%. The invention also provides a preparation method. The proton transport composite membrane involved in the present invention has a working temperature of 150-350°C, is a high-temperature proton transport composite membrane with high proton conductivity, good mechanical strength, alcohol resistance and processability, and is suitable for hydrogen High temperature proton transport membrane fuel cell with alcohol as fuel.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a high-temperature proton transport composite membrane. [0002] The present invention also relates to a preparation method of the above-mentioned high-temperature proton transport composite membrane. Background technique [0003] Energy crisis and environmental problems are two severe challenges that human beings must face in the 21st century. The development of new clean energy has attracted the attention of countries all over the world. A fuel cell is a device that converts chemical energy directly into electrical energy. It uses non-petroleum fuels such as hydrogen, natural gas, coal gas, and methanol to undergo oxidation-reduction reactions at the two poles of the battery with pure oxygen or air, and continuously provides direct current to the environment. The research on fuel cell technology and its key materials is of great significance to realize the sust...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M2/16H01M8/1072
CPCY02E60/50Y02E60/12Y02P70/50
Inventor 崔光磊王海波刘志宏陈骁韩鹏献
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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