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A Comprehensive Parametric Study for Solid-state Lithium-ion Battery Through Finite Element Simulation
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DOI：10.1007/s13391-021-00305-9.png)
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摘要
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Solid-state lithium-ion batteries (SSB) have been regarded over recent years as a promising candidate for next-generation energy storage due to their increased energy density and safety compared to conventional lithium-ion batteries. However, some internal and design parameter effects are yet to be fully comprehended. Since numerical modeling gives the opportunity to explore easily the various parameters and their effect on the performance of the cell, herein, we present a numerical model to study some parameters to optimize the performance of the SSB. The model considers diffusion of lithium-ion in both the electrode and electrolyte and electrochemical reactions within the SSB. The model prediction agrees with some experimental discharge profiles, which therefore validates the model. The model is then used to understand the role of the electrode and electrolyte thickness and maximum concentration of lithium in the solid phase on the performance of the cell. It was observed that increasing cathode thickness increases the cell capacity, whereas reducing electrolyte thickness improves the capacity of the cell. Moreover, a direct proportionality is established between the maximum concentration of lithium and the call capacity. Additionally, the role of transport parameter, diffusivity, on the capacity of the SSB at different discharging rates is also studied. The understanding garnered from the study will improve the cell electrode design tailored to the desired applications of the SSB. This work summarizes the relationship between some design parameters and the performance of a solid-state battery through modeling approach.
Keyword:
Solid-state batteries
Modeling
Electrode thickness
Solid electrolyte thickness
Diffusivity
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论文数:
162
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1.9K
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