▎ 摘　　要

NOVELTY - Synthesis of lithium-rich iron-manganese-based complex cathode material in situ oxidation of graphene conductive grid comprises (i) dispersing the graphene oxide in an amount of ethanol or water; (ii) taking low-melting salt by lithium-rich iron-manganese-based anode material element molar ratio, heating in a water bath and stirring into a molten state; (iii) adding graphene oxide dispersion into molten salt; (iv) stirring step (iii) mechanically and evaporating; (v) transferring resultant black gel to blast oven, drying; and (vi) crushing and then treating at high temperature. USE - The synthesis of lithium-rich iron-manganese-based complex cathode material in situ oxidation of graphene conductive grid is useful for lithium ion batteries (claimed). ADVANTAGE - The synthesis of lithium-rich iron-manganese-based complex cathode material in situ oxidation of graphene conductive grid is simple, has improved the stability and is economical. DETAILED DESCRIPTION - Synthesis of lithium-rich iron-manganese-based complex cathode material in situ oxidation of graphene conductive grid comprises (i) dispersing the graphene oxide in an amount of ethanol or water, at room temperature and stirring for 2-4 hours to obtain ultrasonic graphene oxide dispersion and graphene oxide dispersion concentration at 0.1-2 mg/ml; (ii) taking low-melting salt by lithium-rich iron-manganese-based anode material element molar ratio, heating in a water bath and stirring into a molten state; (iii) adding slowly dropwise the step (i) graphene oxide dispersion into the step (ii) in the molten salt; (iv) stirring step (iii) mechanically and evaporating to black gel; (v) transferring the step (iv) resultant black gel to a blast oven, blast drying to obtain a porous fluffy black mesh material, it is the lithium-rich iron-manganese-based anode material/graphene oxide complex precursor; and (vi) crushing the step (v) obtained black mesh precursor to powder and then treating at high temperature.