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    • 27. 发明公开
    • 촉매층, 막 전극 접합체 및 전기화학 전지
    • 催化层,膜电极组件和电化学电池
    • KR1020120110007A
    • 2012-10-09
    • KR1020120023924
    • 2012-03-08
    • 가부시끼가이샤 도시바
    • 메이우후까자와다이시아까사까요시히로
    • H01M4/88H01M4/90H01M8/02H01M8/10
    • H01M4/8626H01M4/8605H01M4/8657H01M8/1004H01M2008/1095Y02E60/521
    • PURPOSE: A catalyst layer with a layered structure is provide to able to improve durability and use efficiency in an electrode of a membrane electrode assembly, especially cycle durability. CONSTITUTION: A catalyst layer(1) comprises a layered structure on which sheet-like unit catalyst(2), and a pore layer(3) are laminated. An average thickness of the sheet-shaped unit catalysts is 4-30 nm. A porous layer is inserted between two sheet-like unit catalysts. The sheet-like unit catalyst consists of a layered structure that laminated in a transverse direction of the sheet-like unit catalyst. The sheet-like unit catalyst comprises three or more layers laminated in the transverse direction. The outermost layer of the layered structure comprises at least one precious metal and has a composition different with a composition of an inner layer inserted between the outermost layers.
    • 目的:提供具有层状结构的催化剂层,能够提高膜电极组件的电极的耐久性和使用效率,特别是循环耐久性。 构成:催化剂层(1)包括其上层叠片状单元催化剂(2)和孔层(3)的层状结构。 片状单元催化剂的平均厚度为4-30nm。 在两片状单元催化剂之间插入多孔层。 片状单元催化剂由在片状单元催化剂的横向上层叠的层叠结构体构成。 片状单元催化剂包括在横向上层压的三层或更多层。 层状结构的最外层包含至少一种贵金属,并且其组成与插入最外层之间的内层组成不同。