Cathode electrode, method for manufacturing the same and lithium battery containing the same

A method for manufacturing a cathode electrode comprising:

• (a) mixing a dried porous conductive substrate and sulfur and/or a sulfur-containing organic compound in a sealed container, and heating the mixture at a temperature within the range of from about 50° C. to about 300° C. to melt the sulfur and/or the sulfur-containing organic compound in the mixture, followed by coating the surface of and/or filling the pores of the porous conductive substrate with the molten sulfur and/or sulfur-containing compound;
• and
• (b) reducing the pressure of the sealed container to within the range of from about 10−6 Torr to about 760 Torr thereby removing the gas present in the pores, and allowing the sealed container sulfur to continuously fill the pores, and to further fill the pores with the molten sulfur and/or sulfur-containing compound, thereby producing a porous conductive material whose surface is coated with and/or whose pores are filled with sulfur and/or a sulfur-containing organic compound.

A porous conductive material for use in a cathode active material for a secondary battery, wherein the surface of the porous conductive material is coated with sulfur and/or a sulfur-containing organic compound, and/or pores of the porous conductive material are filled with sulfur and/or a sulfur-containing organic compound.