Electrocatalytic Performance of Bimetallic Ni-Mo Alloy with Thermally Modulated Microstructure for Hydrogen Generation at Ultra-Low Overpotential in Acidic Media

Electrochemical water splitting has emerged as a promising route for renewable hydrogen generation in recent years, but still significant development of efficient and cost-effective catalysts is required to further reduce energy losses and the cost of materials for scalable and industrial applications. Herein, a highly efficient well-assembled bimetallic Ni-Mo electrocatalyst constructed on microporous nickel foam by potentiostatic electrodeposition method is reported which is capable enough to deliver high current densities of 50mA/cm2 at an overpotential below lOOmV vs. RHE in acidic medium. The variation in the electrochemical performance of the Ni-Mo alloy is largely attributed to microstructural variation as modulated by annealing temperature. This Binder free electro catalyst with a high Electrochemical Surface Area and improved physicochemical properties due to alloy formation at different temperatures facilitates the electron transfer process resulting in enhanced electro catalytic activity.