Accelerated testing system for durability of hydrogen fuel cell

Abstract

The invention relates to an accelerated testing system for durability of a hydrogen fuel cell. The system comprises a hot press, a fuel cell test module, an impedance meter, an electrochemical workstation, a scanning electron microscope and an ion chromatograph, wherein after catalyst slurry is coated on a proton exchange film to form a catalytic layer, the hot press is suitable for hot-pressing aself-made diffusion layer on two sides of the catalytic layer to form a film electrode, the film electrode is assembled into a hydrogen fuel cell, single cell activation of the hydrogen fuel cell isperformed, and the durability of the hydrogen fuel cell is determined according to a polarization curve, an alternating-current impedance spectrum, a linear scanning voltammetry curve, a sectional view of the catalyst layer and the fluorine ion concentration of the film electrode before and after the hydrogen fuel cell operates under the open-circuit voltage working condition. The system is advantaged in that related experimental data of the hydrogen fuel cell are collected, and attenuation mechanisms of corresponding film electrodes are analyzed, so durability, namely the service life, of thehydrogen fuel cell is calculated, the life test of the hydrogen fuel cell can be accelerated, and the hydrogen fuel cell with 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 accelerated testing system. 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 condi...

AI Technical Summary

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.

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