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- W4281635320 abstract "Sea urchin-like LiAlO2@NiCoO2 hybrid composites with core-shell structure assembled with nanoneedles have been successfully fabricated through a facile hydrothermal route followed by a calcination procedure in N2 for the first time. The sea urchin-like architecture with large accessible surface can offer numerous active sites for redox reaction. The synergy of two advantages has dramatically improved the electrochemical behavior in terms of specific capacity, cycle performance and rate capability, especially at high current densities. The LiAlO2(5.0 wt%)@NiCoO2 displays charge capacities are 1309.0 and 933.6 mAh g−1 at 0.5 and 1A g−1, respectively, after 400 cycles. However, the charge capacities of bare NiCoO2 are only 562.9 and 476.7 mAh g−1 at corresponding rates. Especially, LiAlO2(5.0 wt%)@NiCoO2 preserves 358.1 mAh g−1 after 500 cycles at 2A g−1 with a capacity retention of 74%. The superior electrochemical property is related to the sea urchin-like nature and the ingenious composition design. In addition, the DFT calculation result shows that the formed stable, well-coordinated, and metallic interface between LiAlO2 and NiCoO2 are very helpful for reducing the interfacial impedance and beneficial for the improved rate capability of the materials. Therefore, such LiAlO2@NiCoO2 composites with unique morphology demonstrate a huge potential as electrode materials for Li-ion batteries." @default.
- W4281635320 created "2022-06-13" @default.
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- W4281635320 date "2022-09-01" @default.
- W4281635320 modified "2023-09-28" @default.
- W4281635320 title "Sea urchin-like LiAlO2@NiCoO2 hybrid composites with core-shell structure as high-performance Li storage materials" @default.
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- W4281635320 doi "https://doi.org/10.1016/j.ceramint.2022.05.301" @default.
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