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- W2890827576 abstract "Core-shell structured [email protected] carbon ([email protected]) hybrids with well-encapsulated Ge particles within a conductive coating is an ideal anode material for high energy and power density lithium-ion batteries (LIBs). Here, we propose a novel route to synthesize core-shell structured [email protected] hybrids by the modified in situ spray pyrolysis technique using a mixed spray solution consisting of a Ge precursor as an active material source and polyvinylpyrrolidone (PVP) as a carbon source. It is found that in situ formed submicron Ge (200–800 nm) crystals encapsulated in a N-doped carbon coating, allows the increase of electrical conductivity for Ge with enhanced structural stability. For lithium storage, the [email protected] hybrids exhibit superior properties compared to that of pure Ge such as excellent long-term cycling stability (917 mAh g−1 with a capacity decay of 0.018% per cycle for 1000 cycles at 1 C) and outstanding rate capability (806 mAh g−1 at 5 C after 400 cycles). The full cell assembled with [email protected] anode and LiNi0.5Co0.2Mn0.3O2 cathode presents high energy density. Moreover, the spray pyrolysis method allows a yield of ∼4.8 g h−1 with a lab-scale equipment, demonstrating that established industrial processes can be applied to produce Ge-based anodes with sophisticated structures." @default.
- W2890827576 created "2018-09-27" @default.
- W2890827576 creator A5034582982 @default.
- W2890827576 creator A5078949281 @default.
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- W2890827576 date "2019-03-01" @default.
- W2890827576 modified "2023-10-01" @default.
- W2890827576 title "In situ synthesis of core-shell structured Ge@NC hybrids as high performance anode material for lithium-ion batteries" @default.
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- W2890827576 doi "https://doi.org/10.1016/j.cej.2018.09.113" @default.
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