A carbon fine powder is obtained by uniformly coating the surface of a carbon fine powder having a large specific surface area with a uniform thin film layer of a metal oxide, metal nitride or metal carbide as an electrode active substance material through...

A water repellent carbonaceous material obtained by contacting a carbonaceous material with a water repellent material in a melted state.

A kind of pyrolyzed hard carbon material, preparation and its applications are involved in this patent. The particle of this material has spherical or ellipsoidal morphology with smooth surface. The average particle size is in the range of 0.05/100 microns...

When a pitch composition prepared by mixing 100 parts by weight of mesophase pitch with 10 to 1,000 parts by weight of coal tar pitch, is heat-treated at a temperature of 500 DEG C or higher, it is possible to produce a high-density coke at a high yield wh...

This invention relates with the carbon powder which is characterized to enhance the adhesive strength and the electrophretic nature to the electrode by including one or more than two of sulfur, nitrogen, boron, phosphorus, and fluorine, with 1 - 20wt% of o...