Fuel cell electrode catalyst, method for selecting the same, and fuel cell including the same
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United States of America Patent
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Feb 13, 2024
Grant Date -
Sep 15, 2022
app pub date -
Mar 9, 2022
filing date -
Mar 11, 2021
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Abstract
A fuel cell electrode catalyst includes: catalyst metal particles containing at least one of platinum or a platinum alloy; and support particles supporting the catalyst metal particles. The crystallite size 2r obtained from an X-ray diffraction image of the catalyst metal particles is 3.8 nm or less, where r represents a crystallite radius of the catalyst metal particles obtained from the X-ray diffraction image. The amount of CO adsorption Y (mL/g-Pt) on the fuel cell electrode catalyst satisfies Y≤40.386/r+1.7586.
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