Potassium hydroxide Electrolytes 3 Capacitance 2 Electrochemical impedance spectroscopy 2 High resolution transmission electron microscopy 2 Supercapacitor 2 X ray diffraction analysis 2 Active site 1 Aggregates 1 Alkaline solutions 1 Au nano rods 1 Aurivillius 1 Bifunctional electrocatalysts 1 Bimetals 1 Bismuth compounds 1 Bismuth titanate 1 Capacitance retention 1 Carbon carbon composites 1 Catalysis 1 Catalysts 1 Cathodes 1 Chronoamperometry 1 Cobalt compounds 1 Composite nanoparticles 1 Copper oxides 1 Core-shell composites 1 Cost effectiveness 1 Cyclic voltammetry 1 Density functional theory 1 Electric discharges 1