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- W3035519386 abstract "The rational design of hierarchical nanostructured electrode materials is critical for achieving high electrochemical property for supercapacitor (SC) applications. Herein, we report a facile method for fabricating hierarchical [email protected]–OH core-shell nanowire array ([email protected]–OH NWA) on flexible carbon fiber clothes by using a cobalt-based metal organic framework (Co-MOF) as an intermediate. The growth mechanism study shows the formation process is completed by a localized dissolution of Co-MOF followed by a directional growth of NiCo–OH nanosheets on NiCo2O4 nanowires. The unique hierarchical nanostructure endows the material a high surface area, rich active sites, fast electron transport, and efficient electrolyte ion diffusion. Consequently, the as-prepared material exhibited an over 3 times’ higher specific capacity than the pristine NiCo2O4 nanowire arrays and an excellent rate capability at 40 A g−1 for SCs. Moreover, the [email protected]–OH NWA based hybrid supercapacitor (HSC) exhibited a considerably high energy density of 57.2 Wh kg−1, a high power density of 17.6 kW kg−1, and ultralong cycling stability of over 10 000 cycles (retention rate of 91.8%), outperforming most of the current state-of-the-art SCs. The directional growth strategy using MOFs as intermediates reported here provides a simple but effective way to fabricate hierarchical nanostructured electrode materials for advanced energy storage applications." @default.
- W3035519386 created "2020-06-19" @default.
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- W3035519386 date "2020-10-01" @default.
- W3035519386 modified "2023-10-16" @default.
- W3035519386 title "Metal-organic framework derived directional growth of ultrathin amorphous NiCo hydroxide nanosheets on NiCo2O4 nanowire arrays for enhanced electrochemical properties" @default.
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- W3035519386 doi "https://doi.org/10.1016/j.ceramint.2020.06.067" @default.
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