▎ 摘　　要

NOVELTY - The device comprises an inner container, an outer container, and a cold insulation layer (3) which are orderly covered. The inner container is filled with filler. The filler is formed by sintering the composite material of graphene and magnesium. The inner container is made of aluminum alloy material. The composite material of graphene and magnesium is stretched into a filament or sheet structure, and then the filler is made. The aluminum alloy is used to prepare the bottle mouth of the hydrogen storage device by a spinning process. USE - Device used for storing high-efficiency hydrogen. ADVANTAGE - The device has mild operation temperature, low hydrogen storage pressure, a simple hydrogen storage process, a high automation degree, a reliable device, improved preparation cost and liquefying cost of the hydrogen, and obvious economic benefit. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the device used for storing high-efficiency hydrogen. Inner tank (1) Outer tank (2) Cold insulation layer (3) Packing (4) Heating layer (5)