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- W3046138730 endingPage "110480" @default.
- W3046138730 startingPage "110480" @default.
- W3046138730 abstract "Abstract The high-capacity silicon oxide (SiOx) is a promising anode candidate for lithium-ion batteries (LIBs), but the huge volume expansion during the cycle severely limits their practical application. Mesoporous SiOx is widely investigated as an effective solution due to the self-buffering inner-space. Nevertheless, both excessive and deficient inner-space have bad impacts on the anode material, so exploring a suitable pore volume is the top priority. In this work, an impressive and novel approach has been developed to prepare SiOx@C core-shell microspheres with different mesopores of SiOx. Vinyl-SiO2 nanoparticles are gestated in the framework of sulfonated polystyrene (SCLPS) microspheres to form the vinyl-SiO2/SCLPS composites by vinyltriethoxysilane as the silicon source and in-suit catalyzed by SCLPS. Afterwards, the vinyl-SiO2/SCLPS are covered by resorcinol/formaldehyde polymer, and then the core-shell microspheres are carbonized to prepare SiOx@C. The inner pore space of SiOx can be controlled by adjusting the cross-linking degrees (CLDs) of the SCLPS microspheres. After comparison, SiOx-6@C with the most suitable porous structure is selected, which exhibits a large reversible capacity (761 mAh g−1 at 100 mA g−1) and acceptable cycling capacity (534 mAh g−1 after 150 cycles). This work provides novel insights on exploring an appropriate inner-space to overcome the challenge of volume expansion." @default.
- W3046138730 created "2020-08-03" @default.
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- W3046138730 date "2020-11-01" @default.
- W3046138730 modified "2023-10-14" @default.
- W3046138730 title "Core-shell structured SiO @C with controllable mesopores as anode materials for lithium-ion batteries" @default.
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- W3046138730 doi "https://doi.org/10.1016/j.micromeso.2020.110480" @default.
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