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The Effect of Heat Treatment on Nanoparticle Size and ORRActivity for Carbon-supported Pd–Fe Alloy Electrocatalysts

E F Abo Zeid, Young Tae Kim


The synthesized carbon-supported Pd-Fealloy electrocatalysts were characterized for the purpose of the fuel cell cathode oxygen reduction reaction (ORR). The synthesized catalysts were characterized in terms of structural morphology and catalytic activity by XRD and electrochemical measurements. Surface cyclic voltammetry was used to confirm the formation of the Pd–Fe alloy. The catalysts were heat-treated at temperatures ranging from 300 C to 700 C for different ageing times, in order to improve activity and stability. The average particle size of 10.16 nm, and the highest ORR catalytic activity were obtained at the optimal heat-treatment temperature 300 C for 3h. Electrocatalytic ORR activity was also examined in an acidic solution containing methanol. The results showed that the synthesized Pd–Fe/C catalyst has methanol tolerant capabilities.


Alloys; chemical synthesis; powder diffraction; ageing

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