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Improved composition of a selective oxidation catalyst for use in fuel cells
Improved composition of a selective oxidation catalyst for use in fuel cells
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机译:用于燃料电池的选择性氧化催化剂的改进组成
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摘要
This invention pertains to improved formulations of platinum-molybdenum alloys for use as anode catalysts. These electrocatalysts find utility as a constituent of gas diffusion electrodes for use in fuel cells that operate at less than 180 DEG C. or in applications whereupon hydrogen is oxidized in the presence of carbon monoxide or other platinum inhibiting substances. The new formulations derive unexpected activity through creating highly dispersed alloy particles of up to approximately 300 ANGSTROM on carbon supports. The desired activity is achieved by carefully controlling the platinum to molybdenum ratio during preparation and judiciously selecting a proper loading of alloy on the carbon support.
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