Supersaturation-triggered synthesis of 2D/1D phosphide heterostructures as multi-functional catalysts for water splitting

Creative approaches for designing heterostructures that consist of different dimensional components are necessary for achieving highly efficient catalytic materials. Here, we report an in situ supersaturation-triggered growth of vertically aligned 2D CoFeP nanosheet/1D Fe-CoP nanowire (2D/1D CoFeP N...

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Veröffentlicht in:Applied physics letters 2021-03, Vol.118 (9)
Hauptverfasser: Bi, Haohao, Li, Bo, Zhang, Jing, Pan, Anlian, Jiang, Lang, Huang, Gui-Fang, Chang, Sheng-Li, Huang, Wei-Qing
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Sprache:eng
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Zusammenfassung:Creative approaches for designing heterostructures that consist of different dimensional components are necessary for achieving highly efficient catalytic materials. Here, we report an in situ supersaturation-triggered growth of vertically aligned 2D CoFeP nanosheet/1D Fe-CoP nanowire (2D/1D CoFeP NS@Fe-CoP NW) heterostructures with open hierarchical architecture. The integrating 1D nanowires and 2D nanosheets and well-defined 2D–1D interfacial coupling possess enhanced charge transfer, more active sites, and favorable kinetics during electrolysis, resulting in superb electrocatalytic performance for hydrogen evolution reaction, oxygen evolution reaction (OER), and overall water splitting. Specifically, CoFeP NS@Fe-CoP NW heterostructures are efficient OER catalysts in alkaline solution with an overpotential of 250 mV at 30 mA cm−2, outperforming most reported non-noble metal phosphide electrocatalysts. This work provides a facile and scalable strategy to design non-noble metal catalysts with multifunctionality and high activity.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0041080