Observations of Strong Resistivity Reduction in a Palladium Thin Long Wire Using Ultra-High Frequency Pulsed Electrolysis at D/Pd>1

We performed a ultra-short width high voltage pulse electrolysis using a thin Pd wire cathode; a diluted electrolytic solution of D2O+LiOD was used in a peculiar wire-turned electrodes geometry. The deuterated Pd loading was evaluated by the D/Pd normalised electric resistance curve (R/Ro). After a long time of eletrolysis a very high D/Pd loading (1:1 or more) was reached. Very low R/Ro (<0.1) Pd wire was measured after switching off the electrolysis and this effect lasted for several minutes. The Deuterium deloading occurred in several typologies (fast and slow terms) showed as a resistance transition on the Pd wire. This effect can be related to a peculiar surface structural condition.