The study of hydrogen sorption in palladium limited volume electrode from DEMA-TFO ionic liquid

Hydrogen electrosorption properties of electrodeposited Pd-Ir alloys

“…3b. In the case of Pd-Ir alloys the shapes of electrosorption isotherms are similar (S-shape) than that obtained for Pd and Pd-based alloys in different electrolytes [3][4][5]9]. In the HEI three main parts can be distinguished: (1) first plateau assigned to the hydrogen absorbed in the α-phase (solid solution of hydrogen in the alloy) and hydrogen adsorbed, (2) the abrupt increase in the values of H/(Pd+Ir) corresponding to α→β phase transition, and (3) second plateau assigned to hydrogen absorbed in the β-phase (hydride) [33].…”

“…Before the main measurement, each of the Pd-Ir alloy electrode was polarized in the socalled "hydrogen region" (potential range: −0.1÷0.3 V), to obtain repetitive results. This approach, called hydrogen pretreatment procedure (HPP), was previously used for Pd and Pd-based electrodes in aqueous and non-aqueous electrolytes [4,5,9]. Figure 3a shows cyclic voltammetry behavior of Pd-Ir alloys of various compositions after HPP.…”

“…The process of hydrogen electrosorption has been examined in details in Pd [1][2][3][4][5][6], whereas hydrogen absorbing properties of some of Pd-based binary alloys are still unknown. The literature contains studies on a variety of Pd-M-H systems with different M elements such as Rh, Ru, Pt, Au, Ni, Cu, and Ag [7][8][9][10][11][12][13][14][15][16][17][18] but there is no information about Pd-Ir alloys in the aspect of hydrogen electrosorption.…”

Tuning hydrogen sorption properties of Pd by its alloying with Ru, Rh, and Pt: the study of binary alloys in concentrated alkaline media

“…All potentials were calculated in reference to RHE. The potential recalculation into RHE was done with the use of Hydroflex electrode [38,39,51].…”

“…Moreover, there are limited works concerning the hydrogen sorption in Pd from non-aqueous media [36][37][38][39]. The behavior of Pd-based materials in concentrated alkaline media seems to be very important having regard for the fact that Pd and its alloys are considered as efficient modifiers of hydrogen sorption properties of AB-type alloys [40][41][42].…”