In this work, we have conducted surface modification of a polycrystalline nickel (Ni) electrode through galvanic displacement using rhodium (Rh), following the approach described in our previous works . The electrocatalytic activity of the modified Ni electrode for the HER/HOR and OER/ORR was thoroughly examined using electrochemical techniques and compared to that of unmodified Ni electrodes and polycrystalline platinum. The results demonstrate a substantial enhancement in the electrode reactions' efficiency on the Rh-modified Ni surface, showcasing the potential of galvanic displacement as a promising strategy for engineering advanced electrocatalysts with applications in clean energy technologies.