Synergetic electronic modulation and nanostructure engineering of heterostructured RuO2/Co3O4 as advanced bifunctional electrocatalyst for zinc–air batteries

Synergistic electronic modulation and nanostructure engineering are realized by the synthesis of hierarchical RuO 2 /Co 3 O 4 hollow spheres, presenting excellent bifunctional electrocatalytic activity and promising application in zinc–air batteries.