ChemInform Abstract: In situ X-Ray Diffraction Study of Metal Hydride Formation in Palladium and Palladium-Based Alloy Electrodes Under Cathodic Hydrogen Charging.

ChemInform Abstract

The in situ XRD technique is improved for accepting samples with low crystallinity and applied to the study of hydride formation in Pd and Pd-Au alloy foils and amorphous Pd-Zr electrodes. The α- to β-PdHx transformation is found to occur by formation of a β-phase domain in the bulk of the Pd foil during cathodization. In the Pd₇₀Au₃₀ alloy and the amorphous Pd₃₅Zr₆₅ alloy, this α- to β-transformation is not observed. No crystallization in the amorphous Pd-Zr alloy ribbon electrode is detected after hydrogen charging.