Electric discharges Electrochemical performance 5 Cyclic voltammetry 4 Capacitance 3 Electrodes 3 Specific capacitance 3 X ray photoelectron spectroscopy 3 Capacitive performance 2 Capacity retention 2 Carrier concentration 2 Cathodes 2 Electric batteries 2 Electric discharge machining 2 Electrochemical impedance spectroscopy 2 Electrolytes 2 Electron density measurement 2 Electrons 2 Energy storage applications 2 High frequency HF 2 Manganese oxide 2 Morphology 2 Multiwalled carbon nanotubes (MWCN) 2 Nanotubes 2 Optical emission spectroscopy 2 Performance 2 Redox reactions 2 Synthesis (chemical) 2 Synthesised 2 Titanium dioxide 2 X ray diffraction analysis 2