▎ 摘　　要

NOVELTY - Preparation method of graphene-coated layered double hydroxide derivative composites involves i. dispersing cobalt source in methanol, then adding an accelerator, stirring, aging, washing and drying to obtain ZIF-67 (cobalt 2-methylimidazole) nanocrystals; ii. mixing ZIF-67 nanocrystals with molybdenum source, then centrifuging to obtain a solid, dispersing the obtained solid in water, reacting, washing and drying to obtain a cobalt molybdenum lactate dehydrogenase (CoMo LDH) polyhedron material; iii. mixing graphene oxide aqueous solution with the obtained CoMo LDH polyhedron material, and then hydrothermally, washing and drying to obtain the cobalt molybdenum lactate dehydrogenase-graphene oxide (CoMo LDH-GO) polyhedron material; and iv. target product is obtained by calcining the obtained cobalt molybdenum lactate dehydrogenase-graphene oxide polyhedral material. USE - Graphene-coated layered double hydroxide derivative composite material used in the field of lithium ion batteries (Claimed). ADVANTAGE - Preparation method of graphene-coated layered double hydroxide derivative composites has the advantages of excellent electrochemical performance, high reversible capacity, good cycle stability and high rate performance, has a simple preparation method, and is convenient for industrial production.