The use of hydrogen peroxide (H₂O₂) as an oxidant is considered a good alternative to oxygen for the cathodic process in liquid fuel cells. Herein, we studied the reduction of H₂O₂ at nickel and at nickel-rare earth (RE = Ce, Sm, Dy) alloys containing 5 and 10 at.% of RE metal. The alloys were prepared by arc melting, starting from the stoichiometric amounts of the two parent metals, and analyzed by X-ray diffraction and scanning electron microscopy coupled with energy-dispersive spectroscopy. The electrochemical characterization was carried out by voltammetry and chronoamperometry measurements in alkaline media. Ni_0.95Ce_0.05 alloy exhibited the highest catalytic activity for H₂O₂ reduction reaction, with a number of exchanged electrons of 1.7. Additionally, activation energies were estimated according to Arrhenius equation.