Preparation of a one-dimensional hierarchical MnO@CNT@Co–N/C ternary nanostructure as a high-performance bifunctional electrocatalyst for rechargeable Zn–air batteries

A MnO@CNT@Co–N/C bifunctional electrocatalyst is prepared that is active for both the OER and ORR and employed as an electrode in a Zn–air battery that shows superior performance in terms of power density and cyclability over a commercial electrode.