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- W3040028126 abstract "Core-shell nanostructured compounds are considered as promising electrode materials for supercapacitors in virtue of their facile accessibility to active sites and high electrical conductivity, yet always limited by low capacity or poor cyclic stability because of the weak combination or shedding of active materials from the substrate. To address this issue, we first synthesize three-dimensional (3D) CuO cross-linked nanosheet aggregates grown on Cu foams (CF) by wet chemical oxidation, and further demonstrate the growth of ultra-thin cobalt-nickel layered double hydroxides (CoNi LDH) onto the core of 3D CuO cross-linked nanosheet aggregates by electrodeposition. In this way, we find that the cross-linked [email protected] LDH growing on Cu foams has stronger adhesive force. The as-prepared core-shell nanohybrid ([email protected]@CoNi LDH) is featured with a high specific capacity (319.4 mAh·g−1 at 1 A·g−1), excellent rate performance and long cycling stability. The as-assembled [email protected]@CoNi LDH 1–4//RGO asymmetric supercapacitor (ASC) delivers an ultra-high energy density of 92.5 Wh·kg−1 at a power density of 400 W·kg−1, as well as an excellent cycling performance with capacitance retention of 83.8% after 8000 cycles at 5 A·g−1. These results indicate that the cross-linked hybrid is a high-performance electrode material for supercapacitors, and could provide new insight into the synthesis of novel core-shell nanomaterials." @default.
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- W3040028126 date "2020-12-01" @default.
- W3040028126 modified "2023-10-14" @default.
- W3040028126 title "Synthesis of CuO@CoNi LDH on Cu foam for high-performance supercapacitors" @default.
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- W3040028126 doi "https://doi.org/10.1016/j.cej.2020.126145" @default.
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