Electrochemical Properties of MnOx-RuO2 Nanofiber Mats Synthesized by Co-Electrospinning

Abstract

We report on the fabrication and characterization of layer-by-layer stacked MnOx–RuO2 nanofiber mats via co-electrospinning and their potential application for electrochemical capacitors. The morphology of multistacked MnOx–RuO2 fiber mats provides high porosity for the efficient permeability of electrolyte into the inner structure while maintaining a high surface area for enhanced surface activity. In an electrochemical capacitor using MnOx–RuO2 fiber mats, MnOx offers a facile ion pathway and RuO2 provides a fast electron pathway. The electrochemical capacitors utilizing co-electrospun MnOx–RuO2 fiber mats exhibited a high specific capacitance of 208.7 F/g at 10 mV/s.