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    • 3. 发明授权
    • Pre-treatment method for membrane electrode assembly
    • 膜电极组装预处理方法
    • US09012109B2
    • 2015-04-21
    • US10921241
    • 2004-08-18
    • Zhilei Wang
    • Zhilei Wang
    • H01M8/00H01M8/10
    • H01M8/1004H01M8/1023H01M8/1039Y02E60/521
    • A method for pre-treating a membrane electrode assembly (MEA) for a fuel cell is disclosed. According to the method of the invention, the MEA is subjected to multiple wet/dry cycles prior to assembly of the MEA into the fuel cell stack. The pre-treatment wet/dry cycles of the present invention eliminate or reduce the irreversible dimensional changes which occur in the polymer electrolyte membrane in the MEA throughout the wet/dry cycles of fuel cell operation. This reduces stress applied to the MEA throughout wet/dry cycles which occur during operation of the fuel cell. Consequently, the formation and propagation of pinholes in the membrane is reduced, increasing the lifetime of the MEA.
    • 公开了一种用于预处理用于燃料电池的膜电极组件(MEA)的方法。 根据本发明的方法,在将MEA组装到燃料电池堆之前,MEA经受多次湿/干循环。 本发明的预处理湿/干循环消除或减少在燃料电池操作的湿/干循环期间在MEA中的聚合物电解质膜中发生的不可逆尺寸变化。 这降低了在燃料电池运行期间发生的湿/干循环中施加到MEA的应力。 因此,膜中针孔的形成和扩展减少,增加了MEA的寿命。