Preparation and application of gamma-MnOOH/SFC nano composite electrode material

The invention discloses a preparation and application of a gamma-MnOOH/SFC nano composite electrode material. The preparation method comprises the following steps: (1) adding sisal fiber carbon powderinto deionized water, magnetically stirring, adding sulfamic acid, and magnetically stirring to form a black solution; (2) adding potassium permanganate into the black solution, continuously magnetically stirring to form a purple black solution; (2) transferring the purple black solution into a high pressure reactor with a polytetrafluoroethylene lining to react; and washing a product for three times respectively by using deionized water and absolute ethyl alcohol, and drying, thus obtaining the gamma-MnOOH/SFC nano composite with a length of 220nm to 500nm and a diameter of 18nm to 35nm. Thepreparation method is mild in reaction conditions, relatively low in synthetic temperature, relatively short in time, easy in control and low in production cost; and the prepared gamma-MnOOH/SFC nanocomposite is an excellent