Manganous-manganic oxide /carbon nanotube composite material as well as preparation method and application thereof

The invention discloses a manganous-manganic oxide /carbon nanotube composite material as well as a preparation method and application thereof. The method includes Dropwise adding the solution B intothe solution A to obtain a solution C, magnetically stirring the solution C for at least 30 minutes at the temperature of 25-70 DEG C to obtain a solution D, dropwise adding ammonia water into the solution D at the speed of 2-4mL/min under the stirring condition, and uniformly stirring to obtain a mixture E; and carrying out centrifugal separation on the mixture E to obtain a solid, cleaning the solid with deionized water, and drying the solid at 50-80 DEG C in an air environment to obtain the manganous-manganic oxide/carbon nanotube composite material. When the manganous-manganic oxide/carbonnanotube composite material disclosed by the invention is applied to a positive electrode material of an aqueous zinc ion battery, good stable cycle performance and rate capability are shown, and thespecific capacity is 300mA