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- W4224320733 abstract "Abstract Magnesium (Mg)‐ion batteries with low cost and good safety characteristics has attracted a great deal of attention recently. However, the high polarity and the slow diffusion of Mg 2+ in the cathode material limit the development of practical Mg cathode materials. In this paper, an anion‐rich electrode material, NiS 2 , and its composite with Ni‐based carbon nanotubes (NiS 2 /NCNTs) are explored as the cathode materials for Mg‐ion batteries. These NiS 2 /NCNTs with excellent Mg 2+ storage property is synthesized by a simple in situ growth of NiS 2 nanoparticles on NCNTs. NiS 2 with both a large regular cavity structure and abundant sulfur‐sulfur (SS) bonds with high electronegativity can provide a large number of active sites and unobstructed transport paths for the insertion–disinsertion of Mg 2+ . With the aid of 3D NCNTs skeleton as the transport channel of the electron, the NiS 2 /NCNTs exhibit a high capacity of 244.5 mAh g −1 at 50 mA g −1 and an outstanding rate performance (94.7 mAh g −1 at 1000 mA g −1 ). It achieves capacitance retention of 58% after 2000 cycles at 200 mA g −1 . Through theoretical density functional theory (DFT) calculations and a series of systematic ex situ characterizations, the magnesiation/demagnesiation mechanisms of NiS 2 and NiS 2 /NCNTs and are elucidated for fundamental understanding." @default.
- W4224320733 created "2022-04-26" @default.
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- W4224320733 date "2022-04-24" @default.
- W4224320733 modified "2023-10-09" @default.
- W4224320733 title "In Situ Anchoring Anion‐Rich and Multi‐Cavity NiS<sub>2</sub> Nanoparticles on NCNTs for Advanced Magnesium‐Ion Batteries" @default.
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- W4224320733 doi "https://doi.org/10.1002/advs.202200067" @default.
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