The Role of Induced Convection in Branched Electrodeposit Morphology Selection

摘要: Branched copper and zinc aggregates were electrodeposited at large overpotentials from unstirred binary electrolyte in a quasi-two-dimensional cell. The concentration field was measured during deposition by electro-optic interferometry. Depending on conditions, either natural convection electrokinetic induced the growth tips. In of dendrites, onset destabilized tips, resulting multiple tip splitting. then restabilized into new pattern where branch spacing coupled to scale cells