The method of manufacturing a substrate powder having nano coating layer of carbon, MgB2 super preparation and MgB2 superconductor conductor, the manufacturing method and a lithium ion battery positive electrode material for lithium ion batteries, as well as a manufacturing method of a photocatalyst using the same

The method of manufacturing a substrate powder having nano coating layer of the carbon of the present invention, the base powder was added polycyclic aromatic hydrocarbons, the polycyclic aromatic hydrocarbons with a boiling over in the boiling temperature of + 300 ° C. or less enabled with the heating at the pyrolysis temperature above the temperature of the polycyclic aromatic hydrocarbons, characterized in that the surface of the substrate powder covered with 10nm layer less carbon than 0.1 nm. Thus, by appropriately selecting the source of carbon coating a substrate powder, no possibility of causing a defect in the application of the final product of the base material powder, may be productive of substrate powder, modified base powder having a nano coating layer of carbon end product is obtained can be provided.