Recycling of manganese dioxide from spent Zn–MnO2 cells

The resulted material after a discharge of Zn-MnO 2 cell is a mixture of various oxide and hydroxide. The recycling of spent batteries cathodic materials from them is of great scientific and economic interest. In this work, the MnO 2 was recycled by chemical methods, the MnO 2 was oxidized using hydrogen peroxide (H 2 O 2 ) at neutral pH, the obtained materials were characterized by different methods including cyclic voltammetry, impedance spectroscopy, atomic absorption spectroscopy and X-ray diffraction. The preliminary results demonstrated that by chemical oxidation with hydrogen peroxide (H 2 O 2 ) is a suitable method for recuperation of a pure MnO 2 and it could be used in a plant for recycling batteries.