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- W3046757064 abstract "• CoO@Ni-Co-S is synthesized by the hydrothermal process and electrodeposition. • The nanostructure provides short diffusion paths and abundant electroactive sites. • Bi-component metal sulfide can improve conductivity and electrochemical activity. • The energy density of asymmetric supercapacitor is 110.7 W h kg −1 at 880 W kg −1 . CoO@CoS/Ni 3 S 2 (CoO@Ni-Co-S) hierarchical nanostructure electrode materials are synthesized on nickel foam (NF) through hydrothermal process and electrodeposition. The three dimensional porous CoO@Ni-Co-S hierarchical nanostructure is formed through the interconnection between the CoO nanoneedles and the Ni-Co-S nanosheets. This structure is beneficial for the transport of electrolyte ions and electrons. The CoO@Ni-Co-S nanocomposite exhibits a specific capacitance of 2507 F g −1 at 1 A g −1 (which is superior to CoO@CoS electrode, 1855 F g −1 at 1 A g −1 ) and possesses a capacitance retention of 84.2% at 10 A g −1 . Furthermore, an asymmetric supercapacitor with CoO@Ni-Co-S//activated carbon is assembled, and the energy density reaches 110.7 W h kg −1 when the power density is 880 W kg −1 . The asymmetric supercapacitor also exhibits an excellent cyclic stability (84.3% capacitance retention over 10,000 cycles). Preliminary results demonstrate that CoO@Ni-Co-S is a promising material for energy storage." @default.
- W3046757064 created "2020-08-07" @default.
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- W3046757064 date "2020-12-01" @default.
- W3046757064 modified "2023-10-16" @default.
- W3046757064 title "CoO@CoS/Ni3S2 hierarchical nanostructure arrays for high performance asymmetric supercapacitor" @default.
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- W3046757064 doi "https://doi.org/10.1016/j.apsusc.2020.147438" @default.
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