Preparation and characterization of nanostructured NiO/MnO2 composite electro…

A B S T R A C T Nanostructured nickel–manganese oxides composite was prepared by the sol–gel and the chemistry deposition combination new route. The surface morphology and structure of the composite were characterized by scanning electron microscope and X-ray diffraction. The as-synthesized NiO/MnO2 samples exhibit higher surface area of 130–190 m2 g1. Cyclic voltammetry and galvanos…