Abstract
ABSTRACT In this study, we numerically investigated the electrochemical performance of a CGR 17,600 lithium-ion battery (LIB), focusing on lithium-ion transport dynamics within the electrolyte. Using a one-dimensional Nernst-Planck model and finite difference method, we simulated ion diffusion and migration during galvanostatic charge-discharge cycles. Our model predicts concentration profiles, overpotentials, and resistances, identifying a maximum safe operating current of 0.8271 A. The analysis reveals that diffusion dominates during discharge, while migration prevails during charging. The study also characterises ohmic resistance of 0.0497 Ω and steady-state resistance of 0.1904 Ω, underscoring their importance in battery efficiency. Additionally, a transference coefficient of 0.4 highlights effective ion transport, critical for optimising LIB design and performance.
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