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    • 5. 发明申请
    • CATALYST
    • 催化剂
    • WO2017203257A1
    • 2017-11-30
    • PCT/GB2017/051476
    • 2017-05-25
    • JOHNSON MATTHEY FUEL CELLS LIMITED
    • SHARMAN, Jonathan David BreretonMARTINEZ BONASTRE, AlejandroSPIKES, Geoffrey
    • H01M4/86H01M4/88H01M4/92H01M8/1018
    • An electrocatalyst material comprising: (i) a support material comprising a plurality of individual support particles or aggregates; (ii) first particles comprising a first metal and an alloying metal; and (iii) second particles consisting of a second metal or a second metal oxide, wherein the second metal is platinum or iridium; wherein each individual support particle or aggregate has dispersed thereon first particles and second particles, characterised in that the mean average particle size of the second particles is smaller than the mean average particle size of the first particles is disclosed. The electrocatalyst material has particular use in an electrode, such as the cathode, of an electrochemical cell, such as a fuel cell.
    • 电催化剂材料,其包含:(i)包含多个单独的载体颗粒或聚集体的载体材料; (ii)包含第一金属和合金化金属的第一颗粒; 和(iii)由第二金属或第二金属氧化物组成的第二颗粒,其中第二金属是铂或铱; 其中每个单独的载体颗粒或聚集体上分散有第一颗粒和第二颗粒,其特征在于第二颗粒的​​平均颗粒尺寸小于第一颗粒的平均颗粒尺寸。 电催化剂材料特别用于电化学电池如燃料电池的电极,如阴极。