EXPERIMENTAL STUDIES TO ACHIEVE H/Pd LOADING RATIO CLOSE TO 1 IN THIN WIRES, USING DIFFERENT ELECTROLYTIC SOLUTIONS

摘要

Systematic studies have been performed in order to achieve very high concentration of Hydrogen (or Deuterium) into a Palladium lattice. In a very diluted acid electrolytic cell a thin Pd cathode wire (100 μm) and tick anode Pt wires (0.5 mm) has been used as electrodes in a coaxial geometry. Normalised resistance (R/Ro) of Pd-H wire system has been measured on-line and used as reference of H/Pd values. Alcoholic solution (95%) and electrolytic solution (5%) has been used with addition of a very low amount of Sr and Hg ions; high loading results have been achieved with a satisfactory grade of reproducibility. A typical result of this procedure is to have achieved, stable in the time, R/Ro=1.15 (corresponding to an estimation of H/Pd≈1) with an extremely low electrolytic power supply (7 V, 5 mA). Transferring this procedure to Deuterated solution, until now a lower loading has been achieved (R/Ro= 1.55 as about D/Pd= 1.97).