Abstract: The present invention relates to a single-phase lithium-deficient lithium multicomponent transition metal oxide having a layered crystal structure represented by the formula Li1-aM11-x-y-zM2xM3yM4zO2, wherein M1 is one or more transition metals having an oxidation number of +3; M2 is one or more transition metals having an oxidation number of +4; M3 is one or more transition metals having an oxidation number of +5; M4 is one or more elements having an oxidation number of +2; x+2y?z>0; x+y+z<1; 0<a<1; 0<x<0.75; 0?y<0.6; and 0?z<0.3.

Abstract: Provided is barium titanate based powder represented by Chemical Formula 1: (BaxR1r1R2r2)(TiyR3r3R4r4)O3??[Chemical Formula 1] wherein R1 is at least one element selected from the group consisting of yttrium (Y) and lanthanoids; R2 is at least one element selected from the group consisting of magnesium (Mg), calcium (Ca) and strontium (Sr); R3 includes phosphorus (P) and niobium (Nb); R4 is at least one element selected from the group consisting of aluminum (Al), vanadium (V), chrome (Cr), manganese (Mn), cobalt (Co), zirconium (Zr) and tantalum (Ta); r1 and r3 independently represent a real number greater than 0 and equal to or less than 0.05; r2 and r4 independently represent a real number greater than 0 and equal to or less than 0.1; and (x+r1+r2)/(y+r3+r4) is a real number ranging from 0.85 to 1.15.

Abstract: The present invention provides a complex comprising an aggregate of primary particles of an electrode-active transition metal compound and a fibrous carbon material, wherein said fibrous carbon material is present more densely in the surface region of the aggregate than in the inside of the aggregate.

Abstract: Provided is barium titanate based powder represented by Chemical Formula 1: (BaxR1r1R2r2)(TiyR3r3R4r4)O3??[Chemical Formula 1] wherein R1 is at least one element selected from the group consisting of yttrium (Y) and lanthanoids; R2 is at least one element selected from the group consisting of magnesium (Mg), calcium (Ca) and strontium (Sr); R3 includes phosphorus (P) and niobium (Nb); R4 is at least one element selected from the group consisting of aluminum (Al), vanadium (V), chrome (Cr), manganese (Mn), cobalt (Co), zirconium (Zr) and tantalum (Ta); r1 and r3 independently represent a real number greater than 0 and equal to or less than 0.05; r2 and r4 independently represent a real number greater than 0 and equal to or less than 0.1; and (x+r1+r2)/(y+r3+r4) is a real number ranging from 0.85 to 1.15.

Abstract: The present invention relates to a hydrothermal synthesis for preparing barium titanate powder as the essential material for a multi-layer ceramic capacitor. The object of the invention is to prepare barium titanate powder having high purity, particle size of submicron order, uniform particle distribution and excellent crystallinity, by reacting hydrous titanic acid compound prepared via sulfuric acid process with crystalline titanium oxide and barium hydroxide, as the starting material, at a temperature between 60° C. and 300° C. under a pressure between 5 Kgf/cm2 and 50 Kgf/cm2. The process for preparing barium titanate according to the present invention provides barium titanate powder having Ba/Ti molar ratio of 1.000±0.

Abstract: The present invention relates to a hydrothermal synthesis for preparing barium titanate powder as the essential material for a multi-layer ceramic capacitor. The object of the invention is to prepare barium titanate powder having high purity, particle size of submicron order, uniform particle distribution and excellent crys tallinity , by reacting hydrous titanic acid compound prepared via sulfuric acid process with crystalline titanium oxide and barium hydroxide, as the starting material, at a temperature between 60° C. and 300° C. under a pressure between 5 Kgf/cm2 and 50 Kgf/cm2. The process for preparing barium titanate according to the present invention provides barium titanate powder having Ba/Ti molar ratio of 1.000±0.