This book describes in detail the electrochemical deposition and electrochemical features of nanostructured palladium, outlining the advantageous use of the nanotechnology with which the preparation of these films occurs. The text specifically addresses the use of nanotechnology to intensively investigate the hydrogen electrode reaction and the permeation process of hydrogen into bulk material. Using this approach, the studies presented will provide a standard and profound knowledge about the palladium hydrogen (deuterium) electrochemistry as a fundamental basis for common science, and will increase the reader's understanding of Low Energy Nuclear Reactions.