Electrodeposit patterns of polypyrrole in an asymmetric system

The growth morphology of polypyrrole in an asymmetric experimental system is investigated. The distribution of electrical field affects the diffusion of cations and the growth pattern of polymer electrodeposits. Under the combined effects of the electrical field and the magnetic field, the changes of polymer morphologies are studied: the asymmetric pattern disappears due to the convection of solution. It is argued that the morphology patterns depend on the diffusion process.