Abstract: Disclosed in a positive active material for a lithium secondary battery including a compound represented by formula 1 and having a 10% to 70% ratio of diffracted intensity of diffraction lines in 2?=53° (104 plane) with respect to diffracted intensity of diffraction lines in the vicinity of 2?=22° (003 plane) in X-ray diffraction patterns using a CoK?-ray, LixCoO2-yAy??(1) wherein, x is from 0.90 to 1.04, y is from 0 to 0.5, and A is selected from the group consisting of F, S and P.

Abstract: Disclosed in a positive active material for a lithium secondary battery including a compound represented by formula 1 and having a 10% to 70% ratio of diffracted intensity of diffraction lines in 2?=53° (104 plane) with respect to diffracted intensity of diffraction lines in the vicinity of 2?=22° (003 plane) in X-ray diffraction patterns using a CoK?-ray, LixCoO2-yAy??(1) wherein, x is from 0.90 to 1.04, y is from 0 to 0.5, and A is selected from the group consisting of F, S and P.

Abstract: Disclosed in a positive active material for a lithium secondary battery including a compound represented by formula 1 and having a 10% to 70% ratio of diffracted intensity of diffraction lines in 2?=53° (104 plane) with respect to diffracted intensity of diffraction lines in the vicinity of 2?=22° (003 plane) in X-ray diffraction patterns using a CoK?-ray, LixCoO2-yAy??(1) wherein, x is from 0.90 to 1.04, y is from 0 to 0.5, and A is selected from the group consisting of F, S and P.

Abstract: Disclosed in a positive active material for a lithium secondary battery including a compound represented by formula 1 and having a 10% to 70% ratio of diffracted intensity of diffraction lines in 2?=53° (104 plane) with respect to diffracted intensity of diffraction lines in the vicinity of 2?=22° (003 plane) in X-ray diffraction patterns using a CoK?-ray, LixCoO2-yAy??(1) wherein, x is from 0.90 to 1.04, y is from 0 to 0.5, and A is selected from the group consisting of F, S and P.

Abstract: Disclosed in a positive active material for a lithium secondary battery including a compound represented by formula 1 and having a 10% to 70% ratio of diffracted intensity of diffraction lines in 2?=53° (104 plane) with respect to diffracted intensity of diffraction lines in the vicinity of 2?=22° (003 plane) in X-ray diffraction patterns using a CoK?-ray, LixCoO2-yAy??(1) wherein, x is from 0.90 to 1.04, y is from 0 to 0.5, and A is selected from the group consisting of F, S and P.

Abstract: A filter including a base film, a plurality of light absorption units spaced apart from one another at regular intervals in the base film, and a focusing layer on the base film. The focusing layer may include a plurality of longitudinal crests or microlenses aligned with the light absorption units.

Abstract: Disclosed in a positive active material for a lithium secondary battery including a compound represented by formula 1 and having a 10% to 70% ratio of diffracted intensity of diffraction lines in 2?=53° (104 plane) with respect to diffracted intensity of diffraction lines in the vicinity of 2?=22° (003 plane) in X-ray diffraction patterns using a CoK?-ray, LixCoO2-yAy??(1) wherein, x is from 0.90 to 1.04, y is from 0 to 0.5, and A is selected from the group consisting of F, S and P.

Abstract: A sealed battery includes a can for receiving an electric generator, a shape-variable plate crimped on an opening of the can, a gasket disposed between the can and the shape-variable plate, a fixing plate disposed under the shape-variable plate, an insulating member disposed between the shape-variable plate and the fixing plate, and a projection extending from the fixing plate and welded on the shape-variable plate. The projection is provided with a mechanically weak portion which is designed to be broken at an internal pressure lower than that for separating a welding portion of the projection and the shape-variable plate.

Abstract: Disclosed is an electrolyte for a rechargeable lithium battery including at least one organic solvent selected from the group consisting of thiocarbonate, thioester and thioether, and a lithium salt.

Abstract: Disclosed is a positive active material for a lithium secondary battery having high capacity and long durability properties, and particularly to a powder of LiaNi1−x−yCoxMyO2−zFz and LiaNi1−x−yCoxMyO2−zSz (where M is a metal selected from the group consisting of Al, Mg, Sr, La, Ce, V, and Ti, and wherein 0≦x<0.99, 0.01≦y≦0.1, 0.01≦z≦0.1, and 1.00≦a≦1.1) an oxygen in LiaNi1−x−yCoxMyO2 is substituted with F or S whereby the durability, capacity and structural safety of the positive active material is increased.