Hydrogen electrosorption into Pd–Pt–Au ternary alloys

Comparative study on the influence of temperature, electrode potential and alloy bulk composition on hydrogen electrosorption into Pd–Pt and Pd–Au alloys

“…This procedure was applied in order to avoid the effects of ageing during further hydrogen insertion/ removal [29,35]. Hydrogen absorption was performed at a constant potential for a period sufficient to ensure full hydrogen saturation, determined by chronoamperometry.…”

“…In a series of our earlier papers [17,18,[28][29][30][31][32] we have reported on the influence of electrode potential and alloy composition on the thermodynamic and kinetic parameters of the electrosorption process in Pd-Pt, Pd-Au and Pd-Pt-Au alloys. Various aspects of that phenomenon have been examined, such as the hydrogen absorption capacity, the stability of the hydrides, the extent of absorption/desorption hysteresis and the rate and the mechanism of hydrogen insertion/removal.…”

Influence of rhodium additive on hydrogen electrosorption in palladium-rich Pd–Rh alloys

“…This procedure was applied in order to avoid the effects of aging during further hydrogen insertion/removal [20,21,25,26]. Hydrogen absorption was performed at a constant potential for a period sufficient to ensure full hydrogen saturation, determined by chronoamperometry.…”

Properties of Pd–Ru–Rh electrodeposits studied by electrochemical, structural and spectroscopic methods

“…81% Pd, where hydrogen ion reduction (cathodic scan) and hydrogen oxidation (anodic scan) occurs. By the analogy to other Pd-rich alloys [17,19,35,37,38,41,[48][49][50][51]60,[62][63][64][65] we may attribute hydrogen sorption currents both to hydrogen adsorption and absorption. Secondly, it is the region placed between 0.5 V (0.3 V for a sample containing ca.…”

“…However, Pd ternary alloys have been much less frequently examined. Such systems as Pd-Pt-Rh [17,[48][49][50][51][52][53][54], PdRh-Ni [55], Pd-Rh-Co [56], Pd-Ni-Si [57], Pd-Ag-Ni [58], Pd-Pt-Ru [26,59] and Pd-Pt-Au [9,19,60,61] have been already investigated with the focus on their electrochemical, electrocatalytic and/or hydrogen-absorbing properties. To the best of our knowledge, no such reports have appeared yet concerning the electrochemistry of the PdRu-Rh system.…”