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- W4310731025 abstract "The research on the structure of advanced electrode materials is significant in the field of supercapacitors. Herein, for the first time, we propose a novel 3D/3D composite structure by a multi-step process, in which 3D hollow NiCo LDH nanocages are immobilized on 3D sea urchin-like CoO microspheres. Results show that the 3D CoO acts as an efficient and stable channel for ion diffusion, while the hollow NiCo LDH provides abundant redox-active sites. The calculated results based on density function theory (DFT) show that the [email protected] LDH heterostructure has an enhanced density of states (DOS) near the Fermi level and strong adsorption capacity for OH−, indicating its excellent electrical conductivity and electrochemical reaction kinetics. As a result, the [email protected] LDH electrode has an areal specific capacity of 4.71C cm−2 at a current density of 3 mA cm−2 (440.19C g−1 at 0.28 A g−1) and can still maintain 88.76 % of the initial capacitance after 5000 cycles. In addition, the assembled hybrid supercapacitor has an energy density of 5.59 mWh cm−3 at 39.54 mW cm−3." @default.
- W4310731025 created "2022-12-16" @default.
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- W4310731025 date "2023-03-01" @default.
- W4310731025 modified "2023-10-16" @default.
- W4310731025 title "3D hollow NiCo LDH nanocages anchored on 3D CoO sea urchin-like microspheres: A novel 3D/3D structure for hybrid supercapacitor electrodes" @default.
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- W4310731025 doi "https://doi.org/10.1016/j.jcis.2022.11.131" @default.
- W4310731025 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36508396" @default.
- W4310731025 hasPublicationYear "2023" @default.
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