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

Jong-Chan Kim, Kyung-Jin Kim and Sung-Man Lee
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Jong-Chan Kim: Department of Materials Science & Engineering, Kangwon National University, Gangwondaehakgil, Gangwon-do, Chuncheon-si 24341, Korea
Kyung-Jin Kim: Department of Materials Science & Engineering, Kangwon National University, Gangwondaehakgil, Gangwon-do, Chuncheon-si 24341, Korea
Sung-Man Lee: Department of Materials Science & Engineering, Kangwon National University, Gangwondaehakgil, Gangwon-do, Chuncheon-si 24341, Korea

Energies, 2021, vol. 14, issue 8, 1-12

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

Keywords: core-shell composites; Li-ion battery; anode material; hard carbon; Si-carbon composites (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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