Journal
ELECTROCHIMICA ACTA
Volume 422, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2022.140546
Keywords
Silicon; Nanocomposite; Anode materials; Lithium-ion battery
Categories
Funding
- Zhejiang Provincial Natural Science Foundation of China [LGG22E010003]
Ask authors/readers for more resources
Si/SiC/C in-situ composite microspindles were fabricated using Zn2SiO4/C nanowire bundles obtained from hydrothermal synthesis and magnesiothermic reduction. SiC and C components were uniformly distributed at the nanoscale level within the microspindle particle, strengthening the structure. As an anode material for lithium-ion batteries, the Si/SiC/C composite microspindles exhibited excellent cyclic and rate performances, outperforming pure Si microspindles.
Si/SiC/C in-situ composite microspindles are fabricated through the magnesiothermic reduction of the Zn2SiO4/C nanowire bundles obtained from a one-pot hydrothermal synthesis. The SiC and C components in the composite are generated in situ and thus uniformly distributed within the microspindle particle at the nanoscale level. SiC strengthens the structure of the composite microspindle, and amorphous carbon acts as a highly efficient conductive and buffering medium. As anode materials for lithium-ion batteries, the Si/SiC/C composite microspindles deliver a reversible charge capacity of 1510 mAh g-1, an initial coulombic efficiency of 78.7% as well as a capacity retention of 89.9% after 200 cycles when tested at the current density of 100 mA g-1, and also exhibit superior rate capability. The significantly improved electrochemical performance over pure Si microspindles indicates that the composition and structural design of Si/SiC/C composite microspindles are quite efficient.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available