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Filtering by: Creator Mohtat, Peyman Creator Siegel, Jason B. Keyword Electrochemical

UofM pouch cell voltage and expansion dataset and modeling code

Creator:

Mohtat, Peyman, Siegel, Jason B., and Stefanopoulou, Anna G.

Description:

The goal here is to study the voltage and expansion response of lithium-ion batteries at different charging rates. Specifically, the goal is to capture the observation of the smoothing of the peaks in dV/dQ and retention of the peaks in d^2 (backslash)delta/dQ^2 at higher C-rates. The retention of the peaks at higher charging rates enables better estimation of the cell capacity. To achieve this goal a reduced order electrochemical and mechanical model with multiple particles with a size distribution is developed. This allows us to capture the smoothing and preservation of the phase transitions in the voltage and expansion measurements at high C-rates, respectively. The model is written in Matlab software.

Keyword:

Lithium-ion batteries, Modeling, Multiparticle, Mechanical response, and Electrochemical

Citation to related publication:

Mohtat, P., Lee, S., Sulzer, V., Siegel, J. B., & Stefanopoulou, A. G. (2020). Differential Expansion and Voltage Model for Li-ion Batteries at Practical Charging Rates. Journal of The Electrochemical Society, 167(11), 110561. https://doi.org/10.1149/1945-7111/aba5d1

Discipline:

Engineering