Electrochemical behaviour of bimetallic Ni-Ti surface generated by ion implantation

Ni was surface-alloyed with Cu, Ti or Cu + Ti by ion implantation. The redox and catalytic activity of the materials was studied in NaOH by cyclic voltammetry. The surface was characterized by X-ray photoelectron spectroscopy, X-ray and electron diffraction, and electron and atomic force microscopy. All three materials exhibited a unique voltammetric response of Ni and were shown to stabilize the ß modification of the Ni oxide/hydroxide. Cu modified the anodic oxidation of glucose and the oxygen evolution to a higher degree than Ti. The morphology and microstructure differed from those of bulk materials.