title: Electrochemical absorption and oxidation of hydrogen on palladium alloys with platinum, gold and rhodium.
abstract: Thin layers of Pd and its alloys with Pt, Au and Rh were prepared by electrodeposition on a Au substrate. Hydrogen electrosorption by the obtained electrodes was studied in 0.5 M H(2)SO(4) solution using cyclic voltammetry and chronoamperometry. The influence of the alloying process on selected thermodynamic (the amount of absorbed hydrogen, the stability of the β-phase, the extent of the absorption/desorption hysteresis) and kinetic aspects (the rate of hydrogen absorption and absorbed hydrogen oxidation) of hydrogen absorption and desorption was examined. It was found that the addition of the non-absorbing elements to Pd results in faster kinetics of the hydrogen electrosorption process and a smaller absorption/desorption hysteresis.
authors.affiliation: Warsaw University, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
authors.forename: Mariusz
authors.initials: M
authors.lastname: Łukaszewski
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Hubkowska
authors.forename: Andrzej
authors.initials: A
authors.lastname: Czerwiński