Lithium manganese composite positive electrode material and a method for preparing graphene-cladded

Disclosed is a graphene-like composite positive electrode material lithium manganese oxide and preparation method for doped cladding, the method comprising the steps of: A, with manganese dioxide and lithium carbonate as the precursor, after milling to give lithium manganate powder body; B, the graphene-like precursor was added to the mixed lithium manganate powder, then ground, protected under an inert atmosphere, calcination graphene / lithium manganese composite powder; C, remove the powder in the heat treatment under air atmosphere to obtain graphene-coated doped lithium manganese composite positive electrode material. With the above embodiment is obtained a lithium ion battery positive electrode material, low cost, simple, effective solution to the lithium manganate as a positive electrode material defects, a high-performance positive electrode material doped cladding.