Warsaw University, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
Phys Chem Chem Phys. 2010 Nov 21;12(43):14567-72. doi: 10.1039/c0cp00542h. Epub 2010 Oct 4.
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.
在 Au 基底上电沉积制备了 Pd 及其与 Pt、Au 和 Rh 的合金的薄层。通过循环伏安法和计时电流法研究了所得电极在 0.5 M H(2)SO(4)溶液中对氢的电吸附。研究了合金化过程对氢吸收和脱附的某些热力学（吸收的氢量、β相的稳定性、吸收/脱附滞后的程度）和动力学（氢吸收和吸收的氢氧化的速率）方面的影响。结果表明，向 Pd 中添加非吸收元素可加快氢的电吸附过程的动力学，并减小吸收/脱附滞后。
