itanium and tungsten foils (0.1 mm, 99.6% purity,
Advent Materials) were prior to electrochemical experiments
degreased by sonication in acetone, isopropanol
and methanol, afterwards rinsed with deionized (DI) water
and finally dried in nitrogen stream. The samples were
pressed together with a Cu-plate contact against an O-ring
in an electrochemical cell (1 cm2 exposed to the electrolyte)
and anodized at different potentials in the range of