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• W1968110538 abstract "Abstract Carbon supported Pt 3 Y (Pt 3 Y/C) and PtY (PtY/C) were investigated as oxygen reduction reaction (ORR) catalysts. After synthesis via reduction by NaBH 4 , the alloy catalysts exhibited 10–20% higher mass activity (mA mg Pt −1 ) than comparably synthesized Pt/C catalyst. The specific activity (μA cm Pt −2 ) was 23 and 65% higher for the Pt 3 Y/C and PtY/C catalysts, respectively, compared to Pt/C. After annealing at 900 °C under a reducing atmosphere, Pt 3 Y/C-900 and PtY/C-900 catalysts showed improved ORR activity; the Pt/C and Pt/C-900 (Pt/C catalyst annealed at 900 °C) catalysts exhibited specific activities of 334 and 393 μA cm Pt −2 , respectively, while those of the Pt 3 Y/C-900 and PtY/C-900 catalysts were 492 and 1050 μA cm Pt −2 , respectively. X-ray diffraction results revealed that both the Pt 3 Y/C and PtY/C catalysts have a fcc Pt structure with slight Y doping. After annealing, XRD showed that more Y was incorporated into the Pt structure in the Pt 3 Y/C-900 catalyst, while the PtY/C-900 catalyst remained unchanged. Although these results suggested that the high ORR activity of the PtY/C-900 catalyst did not originate from Pt–Y alloy formation, it is clear that the Pt–Y system is a promising ORR catalyst which merits further investigation." @default.
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• W1968110538 date "2011-02-01" @default.
• W1968110538 modified "2023-09-26" @default.
• W1968110538 title "Carbon supported Pt–Y electrocatalysts for the oxygen reduction reaction" @default.
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• W1968110538 doi "https://doi.org/10.1016/j.jpowsour.2010.08.048" @default.
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