Trace nickel-compounded layered magnesium composite material and preparation method and use thereof

A trace nickel-compounded layered magnesium composite material, comprising a nano-layered magnesium matrix and nano nickel distributed on a surface and between inner layers of the nano-layered magnesium matrix;

• wherein:
• the nano-layered magnesium matrix has a surface area size of 100-200 nm2, a layer thickness of 10-200 nm, and a layer spacing of 10-100 nm;
• the nano nickel accounts for 2-6% mass content of the trace nickel-compounded layered magnesium composite material;
• and
• the nano nickel has a particle size of 3-50 nm;
• and
• wherein the trace nickel-compounded layered magnesium composite material is prepared by:
• mixing magnesium powder, nickel salt, and an organic solvent;
• conducting solid-liquid separation to obtain a mixture;
• and
• calcining the mixture in a reducing atmosphere to obtain the trace nickel-compounded layered magnesium composite material;
• wherein:
• the nickel salt is selected from the group consisting of nickel acetylacetonate, nickel acetate, and nickel carbonate;
• the magnesium powder and the nickel salt have a mass ratio of 1:(0.1-0.3);
• the organic solvent is selected from the group consisting of tetrahydrofuran (THF), dichloromethane, and tetrachloromethane;
• and
• the mixture is calcined at 600-900° C. for 20-60 min.