Method for manufacturing cathode electrode for secondary lithium battery using vanadium oxide

Abstract

The present invention relates to a method of manufacturing a cathode electrode for a secondary lithium battery using vanadium oxide. Vanadium oxide is dissolved in an aqueous solution containing H2O2 to form a gel. Thus, the gel can be applied to a metal support even when the binder is not used or the binder of a small amount is used. If vanadium oxide of an adequate amount is put into the aqueous solution containing. H2O2, a transparent aqueous solution is formed while oxygen is generated. The aqueous solution is then changed to a gel state of a viscosity as the time elapses. A small amount of a conductive material and a binder are added in the course that the gel is formed, and are then uniformly mixed with vanadium oxide being an active material, so that a slurry is formed. As the slurry has a high viscosity, it can be applied to the metal support even with a small amount of the binder. Further, as the conductive material, the binder, etc. are mixed in the course that the gel is formed, they are easily and uniformly mixed compared to a method by which the powder is mixed. Thus, the usage of the additive material can be reduced. Also, the present invention is environmentally friendly since solvent such as n-methyl pyrrolidone (NMP), acetone, etc. that is harmful to a human being is not used.

Dependencies are inferred from the claim text.