▎ 摘　　要

NOVELTY - Functional graphene-doped nickel cobalt lithium manganese salt composite cathode material comprises nickel cobalt aluminum lithium cathode material 90-99.9%, 0.1-10% of functional graphene, the functionalized graphene is uniformly dispersed in the anode material nickel cobalt aluminate. USE - Used as functional graphene-doped nickel cobalt lithium manganese salt composite cathode material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing functional graphene-doped nickel cobalt lithium manganese salt composite cathode material comprising (i) respectively preparing salt solution A of nickel, cobalt and manganese, betaine zwitterionic compounds chemically modified functionalized graphene oxide aqueous solution B, solution C, complexing solution D and solution E; (ii) mixing nickel, cobalt and manganese salt solution A and functionalized graphene oxide aqueous solution B, uniformly to obtain the solution F, the mass ratio of nickel, cobalt and manganese salt and oxidized graphite alkene solution F is (10-1000):1, adding co-precipitation reaction solution E to adjust the pH value, injecting the solution C, D, F into the precipitation kettle by parallel-flow feeding method, by adjusting the dripping speed and the dripping time, reaction temperature and stirring speed, after completely dripping after aging; (iii) aging, filtering, washing, drying to obtain the precursor composite material, where, the functionalized graphene oxide uniformly dispersed between the precursor composite material particles and particles; and (iv) mixing the precursor composite material with lithium source according to mol ratio of 1:(1-1.5), sintering, crushing and sieving.