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Enhanced ordered intermetallic compounds excel in catalyzing the oxygen reduction reaction (ORR). We introduce a novel synthesis strategy based on molecularly engineered to address challenges in high-temperature annealing. It involves the synthesis of carbon platforms with rich edge sites, which serve as effective anchoring points for nanoparticles. By utilizing sulfur anchoring, we synthesize ordered Pt-Co intermetallic with Pt-rich shells (o-PtCo@Pt) that exhibit remarkable ORR performance. Ordered arrangement of Pt-Co endows Pt-shell with compression stress and enhances the oxidation resistance of Pt/Co sites. O-PtCo@Pt exhibits high mass activity (MA, 0.53 A mgPt- 1) and specific activity (SA, 1.17 mA cm-2). It exhibits remarkable as cathodic catalyst in proton exchange membrane fuel cells. It achieves power density of 1.14 W cm-2 at 2.0 A cm-2, with MA of 0.50 A mgPt- 1 at 0.9 V. It maintains stability with only 8 % power density loss after 30,000 cycles, retaining MA of 0.35 A mgPt- 1.
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JOURNAL OF POWER SOURCES
ISSN: 0378-7753
Year: 2024
Volume: 613
8 . 1 0 0
JCR@2023
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SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 2
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