Abstract
Abstract Ultrafine Pt nanoparticles (PtNPs) with the diameter of ∼2.5 nm were successfully confined within Fe,N-codoped robust 3D graphene (Fe-N/R3DG) via facile polyol-assisted reduction strategy. Owing to the synergistic effect between the active catalyst (PtNPs) and the support (Fe-N/R3DG), the as -obtained composite exhibited better cyclic stability and long-term durability as well as less methanol toxicity, moreover, 8 times higher specific activity than the commercial Pt/C for oxygen reduction reaction (ORR) in alkaline medium. The results bring new insight into the design of excellent ORR catalyst.
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