Preparation and Characterization of Core-Shell Structure Hard Carbon/Si-Carbon Composites with Multiple Shell Structures as Anode Materials for Lithium-Ion Batteries

Novel core-shell structure hard carbon/Si-carbon composites are prepared, and their electrochemical performances as an anode material for lithium-ion batteries reported. Three different types of shell coating applied using Si-carbon, Si-carbon black-carbon black-carbon/graphite nanosheets. It appears that the use n-Si/carbon black/carbon composite particles in place n-Si is great importance to achieve enhanced from samples, additional wrapping with graphite nanosheets leads a more stable cycle performance composites.