TiMn₂ based bimetallic nano alloy electrocatalyst for improve hydrogen evolution reaction

The development of high-efficiency, durable electrocatalysts is paramount for advancing water-splitting technologies crucial to clean energy conversion. Current electrocatalytic materials often exhibit suboptimal performance, necessitating elevated overpotentials for effective water-splitting reactions. This study introduces a titanium-manganese alloy (TiMn₂) as a promising catalyst for the hydrogen evolution reaction (HER). The electrocatalytic performance of TiMn₂ was evaluated in acidic media for hydrogen production. Results demonstrate that the TiMn₂ electrocatalyst exhibits an exceptionally low overpotential of 139 mV for HER in 0.5 M H₂SO₄, coupled with a low Tafel slope of 68 mV/decade at a current density of 10 mA/cm² and a scan rate of 10 mV/s. Moreover, the TiMn₂ catalyst demonstrates remarkable stability as a HER electrode, maintaining performance with only a 13.2% activity loss over 24 h of continuous operation. These findings underscore the potential of TiMn₂ as a highly efficient and stable electrocatalyst for hydrogen production, offering promising prospects for practical applications in clean energy systems. The exceptional performance metrics of TiMn₂ merit further investigation into its structural and electronic properties to elucidate the underlying mechanisms of its enhanced catalytic activity.