▎ 摘　　要

NOVELTY - Nickel-manganese sulfide/graphene composite material (I) is new. USE - The composite material is useful as a super-capacitor (claimed). ADVANTAGE - The composite material: has controllable morphology, large specific capacitance, high rate performance, and excellent cycle stability; solves problems of low conductivity and poor cycle stability of transition metal oxides in super-capacitor and energy storage fields; and exhibits high power density and energy density. The method: is simple and easy to control; and has low production cost. DETAILED DESCRIPTION - Nickel-manganese sulfide/graphene composite material of formula (Ni-Mn-S/rGO/NFx) (I) is new. x = 1-7. An INDEPENDENT CLAIM is also included for preparation of (I).