Thin Pd-Ru deposits with 90-100% Pd in the bulk were obtained electrochemically from the mixtures of PdCl2 and RuCl3 aqueous solutions. Hydrogen absorption in Pd-Ru deposits was performed using cyclic voltammetry and chronoamperometry from 0.5 H2SO4 solutions at room temperature. Pd-Ru electrodeposits with a high Pd bulk content (above 97%) can absorb more hydrogen than pure Pd, with the hydrogen-to-metal atomic ratio up to 0.85 (as compared with 0.74 for Pd). The absorption capacity of Pd-Ru electrodes containing less than 97% Pd gradually decreases and the H/M ratio drops to ca. 0.50 for electrodes with 90% Pd. With increasing Ru content the potential corresponding to the alpha- and beta-phase transition is shifted negatively with respect to that for pure Pd. Hydrogen absorption properties of Pd-Ru electrodes may be explained taking into account changes in electronic structure probably resulting from alloy formation between Pd and Ru.