▎ 摘　　要

NOVELTY - The utility model is new type relates to one kind used for solar energy photo-thermal power generation heat storage device is made of the material structure, comprising material main body, inner surface of the material main body formed with one layer graphene nano thin film, thickness of the graphene nano thin film is 0.05 (mu) m to 2 (mu) m. The utility model is new type add have machine structure strength and heat storage device, increase have wear resistance, corrosion resistance and heat storage device, reduce material cost and processing cost, increase using life of heat storage device.