Membrane electrode performance test system and method

Abstract

The application discloses a membrane electrode performance test system. The membrane electrode performance test system comprises a load, a positive pole end plate, a negative pole end plate, a test electric pile and performance test equipment; the test electric pile internally comprises at least two membrane electrodes, and in the test electric pile, the membrane electrodes and bipolar plates arealternatively arranged; the positive pole end plate and the negative pole end plate are respectively connected with the bipolar plates positioned at both ends of the test electric pile, and the positive pole end plate and the negative pole end plate are connected by the load in the test system; and the performance test equipment is connected with the membrane electrodes in the test electric pile so as to test performance of the membrane electrodes in the test electric pile. The mode of alternatively arranging the membrane electrodes and the bipolar plates in the test electric pile can ensure that a stress condition of each membrane electrode in the test electric pile is basically consistent so as to ensure that test conditions of each membrane electrode are basically consistent and a performance comparison result of each membrane electrode is more reliable and accurate; and when the membrane electrodes in the test electric pile are tested, performance of various membrane electrodes canbe tested for once, so that efficiency of testing the performance of the membrane electrodes is improved.

Description

technical field [0001] This application relates to the field of fuel cells, in particular to a membrane electrode performance testing system and method. Background technique [0002] Proton exchange membrane fuel cell (PEMFC), as a zero-emission, high-efficiency, high-power-density power generation device, has a very broad development prospect in the application of new energy transportation power. Membrane electrodes in PEMFC are places where heterogeneous material transport and electrochemical reactions occur, which can determine the performance, working life and development cost of PEMFC. [0003] At this stage, in the process of preparing membrane electrodes and developing PEMFC, it is usually necessary to test the performance of various membrane electrodes in order to continuously optimize the performance of membrane electrodes in the process of preparing membrane electrodes according to the test results of membrane electrode performance. , or choose a membrane electrod...

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Problems solved by technology

[0005]However, using the above method to test the performance of various membrane electrodes, it cannot guarantee that the test conditions of various membrane electrodes are exactly the same

Specifically, every time a single cell is connected to the membrane electrode performance test circuit, because it cannot be guaranteed that the positive and negative terminal plates used to fix the single cell in the test circuit are exactly the same as the contact points of each single cell, therefore, it will cause various The distribution of the pressure from the positive and negative end plates of the single cell is different. Correspondingly, the stress on the membrane electrode in each single cell is also different; Different test parameters such as contact resistance and deformation degree

In this way, testing the performance of various membrane electrodes under different test conditions, and then comparing the performance of various membrane electrodes obtained by the test, may not guarantee that the comparison results of the performance of various membrane electrodes are true and accurate.

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