Hetero-architectured core–shell NiMoO(4)@Ni(9)S(8)/MoS(2) nanorods enabling high-performance supercapacitors

ABSTRACT: An effective technique for improving electrochemical efficiency is to rationally design hierarchical nanostructures that completely optimize the advantages of single components and establish an interfacial effect between structures. In this study, core–shell NiMoO(4)@Ni(9)S(8)/MoS(2) hetero-structured nanorods are prepared via a facile hydrothermal process followed by a direct sulfurization. The resulting hierarchical architecture with outer Ni(9)S(8)/MoS(2) nanoflakes shell on the inner NiMoO(4) core offers plentiful active sites and ample charge transfer pathways in continuous heterointerfaces. Ascribing to the porous core–shell configuration and synergistic effect of bimetal sulfides, the obtained NiMoO(4)@Ni(9)S(8)/MoS(2) as electrode material presents an unsurpassed specific capacity of 373.4 F g(−1) at 10 A g(−1) and remarkable cycling performance in the 6 M KOH electrolyte. This work delivers a rational method for designing highly efficient electrodes for supercapacitors, enlightening the road of exploring low-cost materials in the energy storage domain. GRAPHICAL ABSTRACT: [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1557/s43578-021-00318-y.