Preparation technology for copper/graphite core-shell structure

Abstract

The invention discloses a preparation technology for a copper / graphite core-shell structure. According to the technical scheme, RF-PECVD equipment is adopted, a copper film prepared through DPS-III type ultrahigh vacuum facing-target magnetron sputtering is used as a copper source, and a copper / graphite core-shell structure (GS / CC) material is successfully prepared. The preparation technology has the advantages that the copper / graphite core-shell structure material is prepared through direct-current magnetron sputtering and radio frequency plasma enhanced chemical vapor deposition methods. The field emission performance of the material can be effectively improved as Cu particles are introduced, the field emission performance of grapheme can be effectively improved by modulating the morphology of the grapheme, and therefore the material has potential application in a field emission device. By using complementary advantages of graphite and copper, the copper / graphite core-shell structure (GS / CC) material is prepared, while cost is reduced, the field emission performance of the core-shell structure material is promoted substantially, and the material has potential application in the fields of the information technology, biomedical science, sensors and the like.

Description

technical field [0001] The invention discloses a preparation process of a copper / graphite core-shell structure. Background technique [0002] The core-shell structure refers to the inner core surrounded by other materials (ie outer shell). Generally speaking, the core has certain functional properties, while the outer shell can protect or even enhance the performance of the core, or can introduce new properties. The core-shell composite material can be a zero-to-three-dimensional nano- or micron-sized structural material. The core-shell structure usually exhibits better physical and chemical properties than a single component, and the enhanced performance is mainly attributed to the role of the shell. These advantages make the core-shell structure in optics, magnetism, biology, catalysis, energy conversion and storage. and so on have shown potential application value. Although the core-shell structure has been applied in many fields, it is still necessary to prepare a new ...

AI Technical Summary

Problems solved by technology

However, the core-shell structures prepared by these methods are some noble metals (silver, platinum, gold) and magnetic metals (iron, cobalt, nickel) tightly wrapped by graphite layers, which greatly limits its application.