Drying is an important part of electrode formation. The drying temperature can have a strong effect on the composition, structure and catalytic properties of such a complex system as anodic deposited manganese dioxide. The precipitates were dried in air at 60 °C and 90 °C. Temperatures above 100 °С are not recommended, as a large amount of water in the sediment boils and cracks the film. After drying, manganese dioxide shows good mechanical properties and affinity with the surface.