The kinetics of the agglomerate-of-spheres model for the PbO2 electrode

摘要: Abstract The structure of a particulate electrode may be modelled by an agglomerate-of-spheres, called the AOS model. For PbO 2 this model assumes that electronic connections between particles are established through vase-like necks. size these necks determines conductivity electrode. It has been demonstrated thermodynamically there is tendency for spontaneous growth neck at expense particles. Finally, should result in three-dimensional network strings. In present paper it shown transfer material from sphere to can take place electrochemical path, discharge and charge neck. Under assumption rate calculated. Using suitable estimates constants involved found few hours diameter increases ~ 0.2 times particle diameter, however, development final many days.