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- W2906707924 abstract "Nickel cobalt binary sulfides (NiCo2S4) have attracted huge attention as a promising anode material for lithium-ion batteries (LIBs). Herein, a polydopamine (PDA) shell with a controlled thickness was in-situ polymerized on a nanohorn-shaped Ni-Co precursor (Ni-Co-Pre), thus obtaining a core-shell [email protected], and then a high-temperature sulfidation was utilized to convert the [email protected] into the NiCo2S4 confined in nitrogen, sulfur co-doped hollow carbon nanohorns (NiCo2S4@NS-HCN) using cheap and environmental-friendly sulfur powder as sulfur sources. During the sulfidation, the Ni-Co-Pre core was converted into the NiCo2S4, while the PDA shell as a nanoreactor was carbonized into the NS-HCN with simultaneous co-doping of nitrogen and sulfur. Benefitting from high-efficiency redox reactions of NiCo2S4 and efficient structural protections of conductive carbon shells, the NiCo2S4@NS-HCN electrodes showed significantly enhanced electrochemical properties including high reversible specific capacity of 1235 mA h g-1 at 0.1 A g-1 and excellent rate/cycling capability (69% capacity retention after 100 cycles). This study thus provides a simple and efficient confined sulfidation strategy for construction of binary transition-metal sulfides for LIB anode materials." @default.
- W2906707924 created "2019-01-11" @default.
- W2906707924 creator A5039515906 @default.
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- W2906707924 date "2019-04-01" @default.
- W2906707924 modified "2023-10-15" @default.
- W2906707924 title "Synthesis and electrochemical performance of core-shell NiCo2S4@nitrogen, sulfur dual-doped carbon composites via confined sulfidation strategy in a polydopamine nanoreactor" @default.
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- W2906707924 doi "https://doi.org/10.1016/j.coco.2019.01.001" @default.
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