ELECTROLYTE AND SURFACE-ACTIVE ADDITIVES FOR THE ELECTROCHEMICAL DEPOSITION OF SMOOTH, DENSE ALUMINUM LAYERS FROM IONIC LIQUIDS

摘要

The present invention relates to a process for the electrochemical deposition of aluminum, by means of which matt or shiny, dense aluminum layers can be obtained and which comprises the steps: (a) provision of an electrolysis apparatus having at least one anode and at least one cathode in an electrolysis space, (b) electrochemical deposition of aluminum on the at least one cathode of the electrolysis apparatus from an ionic liquid comprising anions and cations and also one or more metal salt(s) and one or more additive(s), wherein the current density at the at least one cathode is at least 50 A/m².