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Hydrogen cell endurance test method

A technology of fuel cells and testing methods, applied in the fields of fuel cells, circuits, measuring electricity, etc., can solve the problems of few collected samples, inaccurate experimental data, and high cost

Inactive Publication Date: 2020-02-28
HUNAN INST OF METROLOGY & TEST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional hydrogen fuel cell durability test cycle is long and the collection of samples is small, which will cause problems such as high cost and inaccurate experimental data.

Method used

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Examples

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Effect test

Embodiment 1

[0047] figure 1 It is a functional block diagram of the hydrogen fuel cell endurance test method of the present invention.

[0048] In this example, if figure 1As shown, this embodiment provides a hydrogen fuel cell durability test method, which includes: after coating the catalyst slurry on the proton exchange membrane to form a catalytic layer, hot pressing the self-made diffusion layer on both sides of the catalytic layer to form Membrane electrode; assemble the membrane electrode into the hydrogen fuel cell, and activate the single cell of the hydrogen fuel cell; control the battery temperature range of the hydrogen fuel cell to 50-80°C, and the humidification relative humidity range to 50-70%, without working back Pressure, adjust the input gas flow to control the utilization rate of hydrogen and air, that is, the range of hydrogen utilization rate is controlled at 60%-70%, and the range of air utilization rate is controlled at 35%-45%; hydrogen fuel cells are collected ...

Embodiment 2

[0064] In this embodiment, this embodiment provides a hydrogen fuel cell durability accelerated test system, which includes: a hot press, a fuel cell test module, an impedance meter, an electrochemical workstation, a scanning electron microscope, and an ion chromatograph; wherein After the catalyst slurry is coated on the proton exchange membrane to form a catalytic layer, the hot press is suitable for hot pressing the self-made diffusion layer on both sides of the catalytic layer to form a membrane electrode; the membrane electrode is assembled into a hydrogen fuel cell, And perform single-cell activation on the hydrogen fuel cell; the fuel cell test module is suitable for collecting the polarization curve of the membrane electrode before and after the open circuit voltage operation of the hydrogen fuel cell; the impedance meter is suitable for collecting the hydrogen fuel cell for open circuit voltage work The AC impedance spectrum of the membrane electrode before and after t...

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Abstract

The invention relates to a hydrogen cell endurance test method. The method comprises: coating catalyst slurry on a proton exchange membrane to form a catalyst layer, and then hot-pressing a self-madediffusion layer on both sides of the catalyst layer, to form a membrane electrode; assembling the membrane electrode into a hydrogen cell, and performing single cell activation on the hydrogen cell; collecting a polarization curve of the hydrogen cell before and after open-circuit voltage condition operation; and linearly scanning a voltage-current curve, a sectional view of the catalyst layer anda fluoride concentration according to the polarization curve of the hydrogen cell before and after open-circuit voltage condition operation and an alternating current impedance spectrum, to judge hydrogen cell endurance. According to the hydrogen cell endurance test method, experimental data related to the hydrogen cell is collected, and an attenuation mechanism of a corresponding membrane electrode is analyzed, so as to calculate endurance, namely, a service life of the hydrogen cell, so that hydrogen cell life test can be accelerated, and a hydrogen cell with a long service life is developed.

Description

technical field [0001] The invention relates to the field of hydrogen fuel cell durability testing, in particular to a hydrogen fuel cell durability testing method. Background technique [0002] Hydrogen fuel cell is a kind of fuel cell that uses hydrogen as fuel and oxygen as oxidant. It has the advantages of zero emission, high efficiency, fast start-up speed, and low-temperature operation. Hydrogen fuel cells have a wide range of applications. They can be used as power sources in the fields of automobiles, aerospace, and unmanned aerial vehicles, as well as distributed power generation, household cogeneration, and backup power sources. [0003] Although hydrogen fuel cells have many advantages, the current high cost and short life of hydrogen fuel cells have slowed down their commercialization. At present, the lifespan of hydrogen fuel cells is generally short. To meet the needs of commercialization, the lifespan of hydrogen fuel cells must meet certain conditions. When ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/392G01R31/389G01R31/385H01M8/04313H01M8/04537H01M8/0444
CPCG01R31/385G01R31/389G01R31/392H01M8/04313H01M8/0444H01M8/04544H01M8/04634Y02E60/50
Inventor 刘良江李庆先向德张遥奇朱先宇王晋威熊婕吴珊珊
Owner HUNAN INST OF METROLOGY & TEST
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