Manganese dioxide is a mineral compound of the metal manganese. It is used for a wide variety of purposes. It is mainly used in dry cell batteries such as zinc carbon batteries and alkaline batteries.It is used in most of the disposable batteries.Apart from these uses, manganese dioxide is used for a variety of useful purposes.Uses of Manganese Dioxide. Manganese dioxide is an industrial mineral with a number of beneficial qualities. It is blackish brown in color.It can be obtained easily from many of the online stores at affordable price rates. It has a number of uses such as the following.ses of Manganese Dioxide. Manganese dioxide is an industrial mineral with a number of beneficial qualities. It is blackish brown in color. It can be obtained easily from many of the online stores at affordable price rates. It has a number of uses such as the following.