Ti- Mn based Bimetallic Alloy Electrocatalyst for Improve Hydrogen Evolution Reaction

Abstract Developing electrocatalysts that are highly efficient and durable is essential for creating high-performance water-splitting devices, which are crucial for clean energy conversion. Unfortunately, existing electrocatalysts are inefficient and necessitate high overvoltage to facilitate the water-splitting reactions effectively. In this study, we are introducing a titanium-manganese alloy as a promising catalyst for the hydrogen evolution reaction (HER). We evaluated the electrocatalytic activity of the TiMn2 alloy for the production of hydrogen in acidic electrolytes. Our results demonstrate that the TiMn2 electrocatalyst exhibits a low overpotential of 139 mV for HER in 0.5 M H2SO4 and a low Tafel slope of 68 mV/dec at a current density of 10 mA/cm2 and a scan rate of 10 mV/s.In addition to this remarkable activity, the catalyst demonstrates excellent stability as a HER electrode over 24 hours of continuous operation, with minimal activity loss (13.2%).