Nonequilibrium Thermodynamics of Porous Electrodes

• Published in: arXiv.org
• Main Authors: Ferguson, Todd R, Bazant, Martin Z
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 23.08.2012
• Subjects: Charge transfer; Electric potential; Electrodes; Fluxes; Lithium-ion batteries; Low currents; Nonequilibrium thermodynamics; Phase separation; Phase transitions; Porosity; Reaction kinetics; Thermodynamic equilibrium; Tortuosity; Variation

We reformulate and extend porous electrode theory for non-ideal active materials, including those capable of phase transformations. Using principles of non-equilibrium thermodynamics, we relate the cell voltage, ionic fluxes, and Faradaic charge-transfer kinetics to the variational electrochemical p...