Model Prediction and Experiments for the Electrode Design Optimization of LiFePO4/Graphite Electrodes in High Capacity Lithium-ion Batteries
- Model Prediction and Experiments for the Electrode Design Optimization of LiFePO4/Graphite Electrodes in High Capacity Lithium-ion Batteries
- 류승호; 김수; 김태영; 남진현; 조원일
- LiFePO4; Porosity; Battery design parameter; Electrochemical model; Electrode thickness
- Issue Date
- Bulletin of the Korean Chemical Society
- VOL 34, NO 1, 79-88
- LiFePO4 is a promising active material (AM) suitable for use in high performance lithium-ion batteries used in
automotive applications that require high current capabilities and a high degree of safety and reliability. In this
study, an optimization of the electrode design parameters was performed to produce high capacity lithium-ion
batteries based on LiFePO4/graphite electrodes. The electrode thickness and porosity (AM density) are the two
most important design parameters influencing the cell capacity. We quantified the effects of cathode thickness
and porosity (LiFePO4 electrode) on cell performance using a detailed one-dimensional electrochemical model.
In addition, the effects of those parameters were experimentally studied through various coin cell tests. Based
on the numerical and experimental results, the optimal ranges for the electrode thickness and porosity were
determined to maximize the cell capacity of the LiFePO4/graphite lithium-ion batteries.
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