AC Susceptibility Measurements of YBCO Sintered Pellets Loaded with Hydrogen by ms Pulsed Electrolysis

The research about the hydrogen in metals has attracted the attention for reasons motivated both from a basic as well as an applied point of view. It is evident there is an overlap between these approaches. Some possible application are discussed in [18]. Actually there is a general interest in the dynamics of hydrogen (or deuterium) in metals, since these are linked with many physical properties of such systems, in particular superconductivity, electronic properties and hydrogen diffusion, a great abundance of experimental research exists in this field. Our aim is to study the effects of hydrogen (and deuterium) on superconducting features of metals (as Pd, Ni and so on) and of high critical temperature superconducting copounds Y1Ba2Cu3O7(YBCO). In this chapter we will deal with the hydrogen loading of YBCO. The hydrogen charging has been performed by means an innovative electrochemical procedure, using very high peak current (up to 15.2 A) with a short time duration (1.3+5 ms) with a repetition rate of 5 kHz. The procedure has been performed at room temperature in an aqueous environment.