Publication record · 18.cifr/1993.doyle.dfn-p2d

Modeling of Galvanostatic Charge and Discharge of the Lithium/Polymer/Insertion Cell

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Marc Doyle (University of California, Berkeley), Thomas F. Fuller (University of California, Berkeley), John Newman (University of California, Berkeley)

RAI18.cifr/1993.doyle.dfn-p2d

Journal of The Electrochemical Society· 1993· doi:10.1149/1.2221597

A mathematical model is developed for the discharge of a lithium/polymer electrolyte/insertion-compound cell. The model accounts for nonequilibrium thermodynamics, concentrated solution theory, and transport phenomena in the porous electrodes and separator. Galvanostatic discharge and charge simulations are presented, showing the effects of electrode thickness, particle size, and rate on cell performance.

lithium-ion batteryporous electrodeP2D modelconcentrated solution theoryButler-Volmer kineticssolid diffusion

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Battery engineers lacked a predictive physics-based model for full-cell voltage response during constant-current cycling. The P2D model directly computes local state-of-charge, overpotentials, and concentration gradients, enabling rational electrode design without empirical curve fitting.

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Doyle, Fuller, and Newman introduced the first rigorous porous-electrode dual-intercalation model that simultaneously resolves electrolyte transport across all three cell regions and solid-state diffusion in spherical particles at every spatial location. Concentrated-solution theory captures activity coefficient effects absent from prior dilute-solution models.

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