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- W3025366120 abstract "Constructing highly efficient and low-cost transition-metal-based electrocatalysts with a large number of interfaces to increase their active site densities constitutes a major advancement in the development of water-splitting technology. Herein, a bimetallic phosphide composite (Co2P@NC–Fe2P) is successfully synthesized from a ferric hydroxyphosphate–zeolitic imidazolate framework hybrid precursor (FeHP-ZIF-67). Benefitting from morphology and composition regulations, the FeHP-ZIF-67 precursor is prepared by a room-temperature solution synthesis method, which exhibits an optimal morphology, where FeHP microspheres are coated with excess ZIF-67 nanoparticles. During the annealing of FeHP-ZIF-67, FeHP serves as a source of phosphorus to form Fe2P and Co2P simultaneously, where Co2P nanoparticles coated with an N-doped carbon (NC) matrix derived from ZIF-67 are partially adsorbed onto the surface of Fe2P microspheres, thereby forming numerous NC–Fe2P interfaces. The optimal Co2P@NC–Fe2P composite has an overpotential of 260 mV at a current density of 10 mA cm–2, a small Tafel slope of 41 mV dec–1, and long-term stability of over 35 h in an alkaline medium for oxygen evolution reactions (OERs). Such a superior OER performance is attributed to the active NC–Fe2P interfaces in the Co2P@NC–Fe2P composite. This work provides a new strategy to optimize transition-metal phosphides with effective interfaces for OER electrocatalysis." @default.
- W3025366120 created "2020-05-21" @default.
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- W3025366120 date "2020-05-15" @default.
- W3025366120 modified "2023-10-16" @default.
- W3025366120 title "Enhanced Oxygen Evolution Reaction Activity of a Co<sub>2</sub>P@NC–Fe<sub>2</sub>P Composite Boosted by Interfaces Between a N-Doped Carbon Matrix and Fe<sub>2</sub>P Microspheres" @default.
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- W3025366120 doi "https://doi.org/10.1021/acsami.0c04902" @default.
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