Fabrication of ternary CNT/PPy/KxMnO2 composite nanowires for electrocatalytic applications

► Novel ternary core-shell CNT/PPy/KxMnO2 nanowires are prepared by a two-step self-assembly method. ► KxMnO2 nanosheets are grown more or less perpendicular to the CNT/PPy nanotubes. ► The CNT/PPy/KxMnO2 nanowires exhibit good performance as electrocatalysts towards the oxidation of H2O2.