NiSe@Ni1−xFexSe2 Core–Shell Nanostructures as a Bifunctional Water Splitting Electrocatalyst in Alkaline Media
Herein a facile synthesis methodology is reported that results in a unique 3D NiSe@Ni1−xFexSe2 core–shell nanostructure on nickel foam substrate, where Ni1−xFexSe2 nanosheets are fabricated on NiSe nanowires through an iron‐doping‐induced phase transformation process under solvothermal conditions. T...
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| Autores principales: | , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Wiley-VCH
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/b88e598e9294462fb5f419a40b18deda |
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| Sumario: | Herein a facile synthesis methodology is reported that results in a unique 3D NiSe@Ni1−xFexSe2 core–shell nanostructure on nickel foam substrate, where Ni1−xFexSe2 nanosheets are fabricated on NiSe nanowires through an iron‐doping‐induced phase transformation process under solvothermal conditions. This material demonstrates stable hydrogen and oxygen evolution activity in 1.0 m KOH with a small overpotential of 153 mV@−10 mA cm−2 and 236 mV@100 mA cm−2, respectively. Furthermore, an efficient and stable water electrolyzer with NiSe@Ni1−xFexSe2/nickel foam as both anode and cathode is fabricated, which requires a low overpotential of 1.60 V to deliver a current density of 10 mA cm−2. Such ion‐doping‐induced phase transformation paves a new way for fabricating highly efficient electrocatalysts for energy storage and conversion. |
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