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- W2920713058 abstract "Abstract In this study, Ti@Ni 0.85 Se electrodes with a triple hierarchy architecture were designed, and their applications in electrocatalytic water splitting were studied. The 3D electrode is comprised of three types of structures including the bottom square Ti mesh structure as the conductive substrate, a vertical and uniform Ni 0.85 Se nanosheet arrays structure in the intermediate section, and the topmost Ni 0.85 Se flower structure. This triple hierarchy architecture is binder‐free, conductive, and has a particular feature of enlarged surface areas, exposing more active sites, promoting mass‐ and charge‐transfer, and accelerating dissipation of gases generated during water electrolysis. Moreover, DFT calculations confirmed that the Ni 0.85 Se possesses metallic character, which further promotes the charge transfer of the electrocatalyst. Benefiting from this special structure and metallic character, the electrode displays a superior activity of 10 mA cm −2 at 120 mV hydrogen evolution reaction overpotential and 30 mA cm −2 at 270 mV oxygen evolution reaction overpotential. By using this electrode as a bifunctional electrocatalyst, an alkali electrolyzer affords a water splitting current of 10 mA cm −2 at a cell voltage of 1.66 V." @default.
- W2920713058 created "2019-03-11" @default.
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- W2920713058 date "2019-04-09" @default.
- W2920713058 modified "2023-10-06" @default.
- W2920713058 title "3D Metallic Ti@Ni <sub>0.85</sub> Se with Triple Hierarchy as High‐Efficiency Electrocatalyst for Overall Water Splitting" @default.
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- W2920713058 doi "https://doi.org/10.1002/cssc.201900181" @default.
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