Throughout the history of human use of materials, we can clearly see that the discovery and application of every important new material will bring tremendous changes to social productivity and human life, and push human material civilization to a higher level.

The first step is to grow high-quality three-dimensional graphene materials to minimize defects and improve the uniformity of the number of layers. Secondly, consider whether the structural unit matching adopts a sheet structure, a tubular structure or a rod structure, and the connection method of the structural unit should be considered to optimize the connection strength and the number of connections. It is necessary to consider introducing a suitable aperture structure according to the actual application.

The 　wet chemical preparation technology uses oxidants such as sulfuric acid and potassium permanganate to oxidize the graphite intercalation to exfoliate the graphene oxide, and then self-assemble the graphene oxide to realize the connection of the graphene. The prepared bulk material forms ice crystals during the freezing process, makes holes, and prepares three-dimensional graphene by freeze drying. In order to further improve the mechanical strength and conductivity of three-dimensional graphene, the researchers used chemical vapor deposition technology to prepare three-dimensional graphene. Graphene was grown directly on the surface of the porous template under high temperature conditions, and the template was removed and freeze-dried to prepare three-dimensional graphene. The graphene prepared by this method has super-light and super-elastic properties, flexible microstructure control, large-scale preparation, and excellent mechanical and electrical properties.

Three-dimensional graphene foam materials are completely different, and electrical properties are particularly important for the application of this material in functional devices. In fact, an important purpose of synthesizing three-dimensional graphene foam is to inherit the excellent electrical properties of single-layer graphene. Although experiments have been trying to study and even improve the electrical properties of graphene foam materials, the lack of theoretical research restricts further development in this direction. This awkward situation is mainly due to the complexity of graphene foam materials, such as the multiple degrees of freedom (number of layers, size) of graphene sheets and the multi-scale characteristics of the problem (involving electronic de Broglie wavelengths, graphene sheet scales) , The characteristic scale of graphene flakes in contact with each other).

Songhu Shenjian Technology (Dongguan) Co., Ltd. relies on the Songshan Lake Materials Laboratory, developed by the laboratory's new fiber team. The company is engaged in the research and development, production, sales, promotion and service of new material technology and its products. The main products include a series of new materials such as nano-carbon fiber, three-dimensional graphene powder, electrospun polymer nanofiber membrane, and electrostatic spinning series equipment. Accept customization, the company's technology is the team's independent original. The company's products are widely used in energy, environmental protection, chemistry and chemical engineering, health protection, scientific research and other fields. The company adheres to the concept of innovation, service, and integrity, is committed to the research and development of new materials and technologies, and provides the society with high-quality products and innovative technologies.