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• W4379598977 abstract "Platinum-rare earth metal (Pt-RE) nanoalloys are regarded as a potential high performance oxygen reduction reaction (ORR) catalyst. However, wet chemical synthesis of the nanoalloys is a crucial challenge because of the extremely high oxygen affinity of RE elements and the significantly different standard reduction potentials between Pt and RE. Here, this paper presents a molten-salt electrochemical synthetic strategy for the compositional-controlled preparation of platinum-neodymium (Pt-Nd) nanoalloy catalysts. Carbon-supported platinum-neodymium (Ptx Nd/C) nanoalloys, with distinct compositions of Pt5 Nd and Pt2 Nd, are obtained through molten-salt electrochemical deoxidation of platinum and neodymium oxide (Pt-Nd2 O3 ) precursors supported on carbon. The Ptx Nd/C nanoalloys, especially the Pt5 Nd/C exhibit a mass activity of 0.40 A mg-1Pt and a specific activity of 1.41 mA cm-2Pt at 0.9 V versus RHE, which are 3.1 and 7.1 times higher, respectively, than that of commercial Pt/C catalyst. More significantly, the Pt5 Nd/C catalyst is remarkably stable after undergoing 20 000 accelerated durability cycles. Furthermore, the density-functional-theory (DFT) calculations confirm that the ORR catalytic performance of Ptx Nd/C nanoalloys is enhanced by compressive strain effect of Pt overlayer, causing a suitable weakened binding energies of O*ΔEO∗$Delta {E}_{{{rm{O}}}^*}$ and ΔEOH∗$Delta {E}_{{rm{OH}}^*}$ ." @default.
• W4379598977 created "2023-06-08" @default.
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• W4379598977 date "2023-06-06" @default.
• W4379598977 modified "2023-10-14" @default.
• W4379598977 title "Molten‐Salt Electrochemical Deoxidation Synthesis of Platinum‐Neodymium Nanoalloy Catalysts for Oxygen Reduction Reaction" @default.
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• W4379598977 doi "https://doi.org/10.1002/smll.202300110" @default.
• W4379598977 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37282800" @default.
• W4379598977 hasPublicationYear "2023" @default.
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