Modeling and Simulation of Lithium-Ion Batteries Using Silicon-Based Anodes
Corressponding author's email:
duongva@hcmute.edu.vnDOI:
https://doi.org/10.54644/jte.2026.2128Keywords:
Lithium-ion battery, Silicon anode, MATLAB/Simulink modeling, CC-CV charging, Thermal-electrochemical simulationAbstract
Lithium-ion batteries employing silicon-based anodes exhibit significantly higher lithium storage capacity than conventional graphite anodes, thereby improving overall capacity and energy density. However, silicon undergoes substantial volume expansion during repeated charge and discharge cycles, which adversely affects structural integrity, durability, and electrochemical performance. To investigate these effects, a simulation model was developed using MATLAB and Simulink, integrating electrical, thermal, and state-of-charge (SOC) components. The model evaluates Constant Current – Constant Voltage (CC-CV) charging and discharging behavior under different C-rate conditions, including 1C, 3C, and 5C. Simulation results show that voltage response, temperature variation, and SOC dynamics are strongly influenced by both the anode material and applied current load. Silicon-based anodes generate more heat and display greater voltage fluctuations compared to graphite. To address these limitations, several strategies such as surface coatings, hollow structural designs, and silicon–carbon composite materials are proposed to reduce volume expansion and improve stability. Overall, the simulation provides valuable insights for material selection and battery design optimization.
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