Probing layered Y(TM)B4 (TM = Cr, Mo and W) borides as efficient hydrogen evolution reaction electrocatalysts

Abstract

In this study, three layered ternary metal borides were analyzed: YCrB₄, YMoB₄, and YWB₄. YWB₄ demonstrated the highest catalytic activity, surpassing the Pt/C catalyst by 185 mV overpotential at an industrially relevant current density of 1000 mA cm⁻². Furthermore, stability testing revealed that YWB₄ retained 95% of its initial activity after 25 hours of continuous operation (5000 cycles) at 1000 mA cm⁻², underscoring its potential as a robust and sustainable HER catalyst for hydrogen production.