▎ 摘　　要

NOVELTY - A monodisperse nickel oxide nanocrystalline material loaded by three-dimensional ordered macroporous (3DOM) graphene-like carbon, has nickel oxide (NiO) nanocrystals with diameter of 5 nm, which are uniformly embedded in the hole wall of the graphene carbon-based carrier material with 3DOM in monodisperse form, i.e. final product hole wall is composed of continuous phase graphene-type carbon layer coated with monodisperse NiO nanoparticles. The first level aperture of the 3 DOM graphene carbon carrier is 280-300 nm. The second level aperture is 50-90 nm. The hole walls thickness is 50-60 nm. The hole is with mesoporous. The mesopour aperture is concentrated at 3-5 nm and the specific surface area is 180-220m2/g. USE - The monodisperse NiO nano-crystalline material is used as cathode material of alkali metal ion battery, such as lithium ion and sodium ion battery (claimed). ADVANTAGE - The monodisperse NiO nano-crystalline material loaded by three-dimensional ordered macro-porous graphene carbon has good lithium storage and sodium storage performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation method of the monodisperse NiO nanocrystalline material loaded by 3DOM graphene carbon comprising dipping (i) dissolving nickel nitrate hexahydrate in deionized water, adding citric acid, (ii)soaking polymethyl methacrylate, filtering, drying to obtain the precursor, (ii) roasting the obtained precursor under argon atmosphere, and then performing low-temperature heat treatment in the air to obtain the target material.