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    • 20. 发明申请
    • Catalyst coated membrane, membrane electrode assembly containing the same, method of producing the same, and fuel cell including the membrane electrode assembly
    • 催化剂涂膜,含有其的膜电极组件,其制造方法和包括膜电极组件的燃料电池
    • US20070269699A1
    • 2007-11-22
    • US11708599
    • 2007-02-21
    • Chan-ho PakSeol-ah LeeHyuk ChangJi-rae KimDae-jong YooSang-hoon Joo
    • Chan-ho PakSeol-ah LeeHyuk ChangJi-rae KimDae-jong YooSang-hoon Joo
    • H01M8/10
    • H01M4/921H01M4/8657H01M4/8668H01M4/881H01M4/8814H01M4/8828H01M4/8875H01M4/8882H01M4/926H01M4/928
    • A catalyst coated membrane (CCM) comprising an anode catalyst layer having a first catalyst layer composed of a non-supported catalyst and a second catalyst layer composed of a supported catalyst, a cathode catalyst layer composed of a supported catalyst, and an electrolyte membrane interposed between the anode catalyst layer and a cathode catalyst layer, the first catalyst layer of the anode catalyst layer being disposed adjacent to the electrolyte membrane; a membrane electrode assembly (MEA) comprising the catalyst coated membrane; a method of preparing the membrane electrode assembly; and a fuel cell comprising the membrane electrode assembly, are provided. The CCM, which comprises a bilayered anode catalyst layer including the first catalyst layer composed of a non-supported catalyst and the second catalyst layer composed of a supported catalyst, exhibits reduced electrical resistance and interfacial resistance, and has increased catalyst availability. The use of the CCM and an MEA having the same results in a decrease in the interfacial resistance between the electrodes and the electrolyte membrane, a decrease in the amount of the catalyst used in the electrode catalyst layer, and a decrease in the thickness deviation in the electrode layers. The fuel cell employing the MEA exhibits maximal activity of the supported catalyst, and has improved cell characteristics such as output voltage, output density, efficiency, and the like.
    • 一种催化剂涂覆膜(CCM),其包括具有由非负载型催化剂构成的第一催化剂层和由负载型催化剂构成的第二催化剂层的阳极催化剂层,由负载型催化剂构成的阴极催化剂层和插入 在阳极催化剂层和阴极催化剂层之间,阳极催化剂层的第一催化剂层设置在电解质膜附近; 包含所述催化剂涂覆膜的膜电极组件(MEA) 一种制备膜电极组件的方法; 以及包括膜电极组件的燃料电池。 包含由非载体催化剂构成的第一催化剂层和由负载型催化剂构成的第二催化剂层的双层阳极催化剂层的CCM显示出降低的电阻和界面电阻,并且提高了催化剂的可利用性。 使用具有相同结果的CCM和MEA在电极和电解质膜之间的界面电阻降低,电极催化剂层中使用的催化剂量的减少以及厚度偏差的降低 电极层。 使用MEA的燃料电池显示出负载型催化剂的最大活性,并且具有改善的电池特性,例如输出电压,输出密度,效率等。