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- W3015955885 abstract "Abstract The rational design and strategy of obtaining stable bifunctional electrocatalysts with unique functionalities are prerequisite to achieving robust catalytic activity. In this study, a composition‐controlled partial sulfurization/phosphorization strategy to synthesize a doughnut‐like 3D heterostructured electrocatalyst for overall water splitting is proposed, wherein core–shell 2D CoS 1− x P x nanosheets decorated with N‐doped carbon are self‐assembled to form a hierarchical 3D architecture. The composition and phase structure in core–shell CoS 1− x P x can be readily modified by controlling the liquid phase sulfurization and subsequent phosphorization, thereby modifying the electronic structure and activating the intrinsic active sites. The resulting CoS 1− x P x benefits from the unique structural features including high accessible active surface area, adequate amount of reactive sites, intimate interfacial coupling between the components, interconnected electron highway, and accelerated charge/mass transfer ability. Consequently, the optimized CoS 0.46 P 0.54 electrocatalyst achieves a catalytic current density of 10 mA cm −2 at overpotentials as low as 101 and 302 mV for hydrogen evolution reaction and oxygen evolution reaction, respectively, with outstanding long‐term operational stability in alkaline solution. The CoS 0.46 P 0.54 couple enables an alkaline water electrolysis with a current density of 10 mA cm −2 at a low cell voltage of 1.62 V, comparable to that of the RuO 2 ||Pt/C couple (1.6 V)." @default.
- W3015955885 created "2020-04-17" @default.
- W3015955885 creator A5000522431 @default.
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- W3015955885 date "2020-04-06" @default.
- W3015955885 modified "2023-10-14" @default.
- W3015955885 title "Hierarchically Structured Bifunctional Electrocatalysts of Stacked Core–Shell CoS <sub>1−</sub> <i> <sub>x</sub> </i> P <i> <sub>x</sub> </i> Heterostructure Nanosheets for Overall Water Splitting" @default.
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- W3015955885 doi "https://doi.org/10.1002/smtd.202000043" @default.
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