Due to passage of direct current and electrolytic reactions of anodic oxidation and cathodic reduction, organic additives generate unwanted breakdown products in solution.
Large extensions were added; older plants modernised to supply higher quality and value-added products such as electrolytic tinplate for the canning and beverage industries.
Anodized aluminium has had the naturally occurring layer of aluminium oxide thickened by an electrolytic process to create a surface that is hard and non-reactive.