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- W3110362372 abstract "Although single-atom catalysts (SACs) are drawing wide attention because they offer properties that differ from those of conventional nanoparticle (NP)-based catalysts, the lack of neighboring metal centers to cooperate in catalysis limits their actual application in many important chemical processes. Here, we report the synthesis of multi-atom Pt catalyst that consists of cross-linked Pt-Pt metal centers stabilized by atomically dispersed ZnFe-N-C support through Pt-N bonds. XAFS analysis reveals that each Pt atom in the multi-atom Pt catalyst coordinates with ∼2.6 N atoms and ∼4.3 Pt atoms. This novel catalyst combines the merits of SACs and NPs, resulting in 100 % exposure of surface Pt atoms and excellent stability and fuel cell performance. With an ultralow Pt loading of 0.035 mg cm−2 at the cathode, the fuel cell delivers a 1.02 W cm-2 maximal power output. DFT calculations revealed that the strongly coupled Pt-N bond is critical for stabilizing the cross-linked Pt." @default.
- W3110362372 created "2020-12-07" @default.
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- W3110362372 date "2021-05-01" @default.
- W3110362372 modified "2023-10-10" @default.
- W3110362372 title "Cross-linked multi-atom Pt catalyst for highly efficient oxygen reduction catalysis" @default.
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- W3110362372 doi "https://doi.org/10.1016/j.apcatb.2020.119728" @default.
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