Modeling lithium intercalation of a single spinel particle under potentiodynamic control

A mathematical model is presented for the lithium intercalation of a single spinel particle as a microelectrode under the stimulus of a cyclic linear potential sweep. The model includes both lithium diffusion, within the particle and kinetics at the particle/electrolyte interface. The model is used to predict that peak current densities depend linearly on the scan rate to a certain power with a constant term, which is different from the predicted peak current density for a conventional redox system. (C) 2000 The Electrochemical Society. S0013-4651(99)06-099-1. All rights reserved.