FIELD: inorganic chemistry; nanotechnology.
SUBSTANCE: invention can be used in making electrode materials for lithium-ion and zinc-ion current sources, as well as for supercapacitors. First, a mixture of aqueous solutions of potassium permanganate KMnO4 and an organic compound in form of ascorbic acid C6H8O6 is obtained, with the ratio of mol: potassium permanganate : ascorbic acid = 1:(0.25÷0.75). Obtained mixture is held for 25-30 minutes while stirring. Formed precipitate is filtered, washed and dried. Obtained are manganese dioxide nanoparticles δ-MnO2 of monoclinic system with mesopore volume of 0.25 cm3/g and specific surface area of 280.4 m2/g.
EFFECT: method is simple and easy to manufacture.
1 cl, 3 dwg, 3 ex
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