Bismuth tungstate-anchored PEDOT: PSS materials for high performance HER electrocatalyst

Bismuth tungstate anchored PEDOT: PSS ([email protected]) electrocatalyst was prepared via hydrothermal and ultrasonication methods successively. The synergetic effects of bismuth tungstate with PEDOT: PSS conducting polymer showed excellent electrocatalytic performance of hydrogen evolution reactions (HER) in alkaline conditions. When compared with pristine bismuth tungstate, the [email protected] exhibited an enhanced electrocatalytic activity with a lower overpotential of 361 mV at 10 mA cm−2, small Tafel slope of 106 mV/dec and enduring stability in 1 M KOH electrolyte. The enhanced electrocatalytic performance of the [email protected] proved to be a beneficial electrocatalyst to the high-cost platinum-based materials in hydrogen production applications.