@article{ART003274554},
author={LEE KANGMI and Lee Jong Dae},
title={Electrochemical characteristics of layered carbon-coated silicon anode composites embedded with Si@C for Li-ion batteries},
journal={Carbon Letters},
issn={1976-4251},
year={2025},
volume={35},
number={6},
pages={3023-3032},
doi={10.1007/s42823-025-00974-8}
TY - JOUR
AU - LEE KANGMI
AU - Lee Jong Dae
TI - Electrochemical characteristics of layered carbon-coated silicon anode composites embedded with Si@C for Li-ion batteries
JO - Carbon Letters
PY - 2025
VL - 35
IS - 6
PB - Korean Carbon Society
SP - 3023
EP - 3032
SN - 1976-4251
AB - In this study, an anode composite material was fabricated by embedding spherical carbon-coated nanosilicon (Si@C) into a layered carbon-coated silicon (L-Si/C) to enhance the capacity and stability of silicon-based lithium-ion batteries. The L-Si/C material was obtained by reacting CaSi2 through a CO₂-assisted carbonization process, followed by removal of the CaCO3 byproduct via HCl etching. Si@C particles, prepared using polydopamine as a carbon precursor, were uniformly embedded in the L-Si/C via ultrasonic treatment. The physical properties of the prepared anode composites were analyzed using HR-SEM, EDS, XRD, and BET. The electrochemical performances were investigated using 1 M LiPF6 in EC:DEC (1:1 vol%) with 10 wt% FEC as the electrolyte, through charge–discharge cycling, rate capability tests, electrochemical impedance spectroscopy (EIS), and differential capacity (dQ/dV) analysis. L-Si/C exhibited the best electrochemical performance under the thermal treatment condition of 720 °C and a CO2 flow rate of 100 sccm. In addition, the application of ultrasonic treatment improved structural stability and rate capability. Consequently, the S_L-Si/C + Si@C-2 exhibited a high initial discharge capacity of 2700.7 mAh/g at 0.1 C and a capacity of 617.4 mAh/g at a high rate of 6 C.
KW - Layered structure;Carbon;Nanosilicon;Anode materials;LIBs
DO - 10.1007/s42823-025-00974-8
ER -
LEE KANGMI and Lee Jong Dae. (2025). Electrochemical characteristics of layered carbon-coated silicon anode composites embedded with Si@C for Li-ion batteries. Carbon Letters, 35(6), 3023-3032.
LEE KANGMI and Lee Jong Dae. 2025, "Electrochemical characteristics of layered carbon-coated silicon anode composites embedded with Si@C for Li-ion batteries", Carbon Letters, vol.35, no.6 pp.3023-3032. Available from: doi:10.1007/s42823-025-00974-8
LEE KANGMI, Lee Jong Dae "Electrochemical characteristics of layered carbon-coated silicon anode composites embedded with Si@C for Li-ion batteries" Carbon Letters 35.6 pp.3023-3032 (2025) : 3023.
LEE KANGMI, Lee Jong Dae. Electrochemical characteristics of layered carbon-coated silicon anode composites embedded with Si@C for Li-ion batteries. 2025; 35(6), 3023-3032. Available from: doi:10.1007/s42823-025-00974-8
LEE KANGMI and Lee Jong Dae. "Electrochemical characteristics of layered carbon-coated silicon anode composites embedded with Si@C for Li-ion batteries" Carbon Letters 35, no.6 (2025) : 3023-3032.doi: 10.1007/s42823-025-00974-8
LEE KANGMI; Lee Jong Dae. Electrochemical characteristics of layered carbon-coated silicon anode composites embedded with Si@C for Li-ion batteries. Carbon Letters, 35(6), 3023-3032. doi: 10.1007/s42823-025-00974-8
LEE KANGMI; Lee Jong Dae. Electrochemical characteristics of layered carbon-coated silicon anode composites embedded with Si@C for Li-ion batteries. Carbon Letters. 2025; 35(6) 3023-3032. doi: 10.1007/s42823-025-00974-8
LEE KANGMI, Lee Jong Dae. Electrochemical characteristics of layered carbon-coated silicon anode composites embedded with Si@C for Li-ion batteries. 2025; 35(6), 3023-3032. Available from: doi:10.1007/s42823-025-00974-8
LEE KANGMI and Lee Jong Dae. "Electrochemical characteristics of layered carbon-coated silicon anode composites embedded with Si@C for Li-ion batteries" Carbon Letters 35, no.6 (2025) : 3023-3032.doi: 10.1007/s42823-025-00974-8
