Rational design of Cu oxynitride–BiVO 4 composites as enriched bifunctional electrocatalysts for hydrogen and oxygen evolution reaction performances

This study investigates the integration of copper oxynitride (CuON) and bismuth vanadate (BiVO 4 ) to form a bifunctional electrocatalyst with enhanced performance for the hydrogen and oxygen evolution reactions (HER and OER, respectively) in 1 M KOH.