Overcoming the slow kinetics and solving the poor charge transport capacity are two critical issues that have to be taken into account in the actualisation of ORR electrocatalysts.In this study,Ag1.8Mn8O16/MWCNTs hybrid materials were successfully prepared using MWCNTs as well-conducting carriers by a green,economical and readily available synthetic method.The Ag1.8Mn8O16/MWCNTs exhibited excellent oxygen reduction electrocatalytic activity.The onset and half-wave potentials reached 1.00 V and 0.79 V,respectively.The Tafel slope exhibited a decrease to 131.5 mV·dec-1,while the kinetic current density reached a high of 8.8 mA cm-2@0.75 V.The enhanced activity was attributed to the synergistic effect between Ag1.8Mn8O16 and MWCNTs.This study provides a promising strategy for the design of efficient manganese-based oxygen reduction electrocatalysts,which provide an ideal candidate for electrochemical energy conversion and storage devices.
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