Effects of pore diameters on the pseudocapacitive property of three-dimension…

Abstract. MnO2 nanoparticles (NPs) with 1.8±0.2 nm in diameter were successfully produced using an ethylene glycolassisted synthesis with successive hydrolysis and condensation reactions. The tiny NPs were used as precursors for producing three-dimensionally ordered macroporous (3DOM) electrodes using a colloidal crystal-templating method. The specific capacitances of 3DOM MnO2 electrodes dep…