One-pot synthesis of Ir@Pt nanodendrites as highly active bifunctional electrocatalysts for oxygen reduction and oxygen evolution in acidic medium

Nanodendritic Ir@Pt core-shell bifunctional electrocatalysts were synthesized by a one-pot synthesis method for the first time. Besides good dispersion and uniform composition distribution, Ir@Pt bifunctional electrocatalysts have exhibited outstanding catalytic activity for both oxygen reduction and oxygen evolution reactions in comparison with the mixture of commercial Ir and Pt blacks.

► Nanodendritic Ir@Pt electrocatalysts are synthesized by a one-pot synthesis method.
► Ir@Pt nanodendrites present good dispersion and uniform composition distribution.
► Ir@Pt has higher activity for ORR and OER than the mixture of Ir and Pt blacks.