Abstract: Disclosed is a transition metal precursor used for preparation of lithium composite transition metal oxide, the transition metal precursor comprising a composite transition metal compound represented by the following Formula 1: M(OH1?x)2?yAy/n??(1) wherein M comprises two or more selected from the group consisting of Ni, Co, Mn, Al, Cu, Fe, Mg, B, Cr and second period transition metals; A comprises one or more anions except OH1?x; 0<x<0.5; 0.01?y?0.5; and n is an oxidation number of A. The transition metal precursor according to the present invention contains a specific anion. A lithium composite transition metal oxide prepared using the transition metal precursor comprises the anion homogeneously present on the surface and inside thereof, and a secondary battery based on the lithium composite transition metal oxide thus exerts superior power and lifespan characteristics, and high charge and discharge efficiency.

Abstract: Disclosed are a cathode active material for lithium secondary batteries including lithium-containing metal oxide particles; a first surface treatment layer formed on the surfaces of the lithium-containing metal oxide particles and including at least one compound selected from the group consisting of fluorine-doped metal oxides and fluorine-doped metal hydroxides; and a second surface treatment layer formed on a surface of the first surface treatment layer and including a fluorine copolymer, and a method of manufacturing the same.

Abstract: Disclosed is a transition metal precursor used for preparation of lithium composite transition metal oxide, the transition metal precursor comprising a composite transition metal compound represented by the following Formula 1: M(OH1?x)2?yAy/n??(1) wherein M comprises two or more selected from the group consisting of Ni, Co, Mn, Al, Cu, Fe, Mg, B, Cr and second period transition metals; A comprises one or more anions except OH1?x; 0?x?0.5; 0.01?y?0.5; and n is an oxidation number of A. The transition metal precursor according to the present invention contains a specific anion. A lithium composite transition metal oxide prepared using the transition metal precursor comprises the anion homogeneously present on the surface and inside thereof, and a secondary battery based on the lithium composite transition metal oxide thus exerts superior power and lifespan characteristics, and high charge and discharge efficiency.

Abstract: Disclosed are a precursor for preparation of a lithium composite transition metal oxide, a method for preparing the same and a lithium composite transition metal oxide obtained from the same. More particularly, the transition metal precursor which has a composition represented by Formula 1 below and is prepared in an aqueous transition metal solution, mixed with a transition metal-containing salt, including an alkaline material, the method for preparing the same and the lithium composite transition metal oxide obtained from the same are disclosed. MnaMb(OH1-x)2-yAy ??(1) wherein M is at least one selected form the group consisting of Ni, Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and Period II transition metals; A is at least one selected form the group consisting of anions of PO4, BO3, CO3, F and NO3, and 0.5?a?1.0; 0?b?0.5; a+b=1; 0<x<1.0; and 0?y?0.02.

Abstract: The present invention provides a method for preparing a core-shell structured particle, the method using a continuous Couette-Taylor crystallizer in which a core reactant inlet, a shell reactant inlet, and a product outlet are sequentially formed on an outer cylinder along a flow direction of a fluid flowing in a Couette-Taylor fluid passage between the outer cylinder and an inner cylinder, wherein a core particle is primarily formed in the fluid passage by a core reactant supplied through the core reactant inlet; a shell layer is formed on a surface of the core particle to cover the core particle by a shell reactant supplied through the shell reactant inlet; and a core-shell structured particle in which the shell layer is formed on the circumference of the core particle, is discharged to the outside through the product outlet.

Abstract: Provided are lithium transition metal composite particle including a lithium transition metal oxide particle, a metal-doped layer formed by doping the lithium transition metal oxide particle, and LiF formed on the lithium transition metal oxide particle including the metal-doped layer, a preparation method thereof, and a lithium secondary battery including the lithium transition metal composite particles.

Abstract: Disclosed are a cathode active material including a lithium transition metal oxide based on at least one transition metal selected from the group consisting of Ni, Mn and Co, wherein at least one hetero element selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Bi, Zn and Zr is located at a surface portion of or inside the lithium transition metal oxide, and a secondary battery including the same. The cathode active material according to the present invention includes predetermined hetero elements at a surface thereof and therein, and, as such, a secondary battery based on the cathode active material may exhibit excellent high-speed charge characteristics and lifespan characteristics.

Abstract: Disclosed are a transition metal precursor for preparing a lithium composite transition metal oxide, a method for preparing the precursor, and a lithium composite transition metal oxide. The transition metal precursor includes a composite transition metal compound having a composition represented by Formula (1) and a Mn content of 60 to 85 mol %: NiaMbMn1-(a+b)(OH1-x)2??(1) where M is at least one selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and period II transition metals, 0.15?a?0.3, 0?b?0.1 and 0<x<0.5. The lithium composite transition metal oxide has a composition represented by Formula (2) and a Mn content of 60 to 85 mol %: Li1+z[NiaMbMn1-(a+b)]2O4-yAy??(2) where M is at least one selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr and period II transition metals, A is a monoanion or dianion, 0.15?a?0.3, 0.005?b?0.1, ?0.1?z?0.1 and 0?y?0.1.

Abstract: Disclosed are a cathode active material for high voltage and a lithium secondary battery including the same. More particularly, a cathode active material including spinel-type compound particles having a composition represented by Formula 1 below; and metal oxides or metal hydroxides present on surfaces of the spinel-type compound particles, and a lithium secondary battery including the same. Li1+aMxMn2?xO4?zAz ??(1) where a, x and z are defined in a specification of the present invention.

Abstract: Disclosed herein is a high voltage cathode active material and a method for preparing the same. The cathode active material includes particles of a spinel-type compound having a composition represented by Formula (1) and a carbon-based material present on surfaces of the particles of the spinel-type compound: Li1+aMxMn2?xO4?zAz ??(1) where ?0.1?a?0.1, 0.3?x?0.8 and 0?z?0.1.

Abstract: Disclosed is a precursor for preparing a lithium composite transition metal oxide. More particularly, a transition metal precursor, including a composite transition metal compound represented by Formula 1 below, used to prepare a lithium transition metal oxide: NiaMbMn1?(a+b)(O1?x)2??(1) wherein M is at least one selected form the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and Period II transition metals; and 0.2?a?0.25, 0?b?0.1, and 0<x<0.5.

Abstract: Provided are a cathode active material including lithium transition metal phosphate particles, wherein the lithium transition metal phosphate particles include a first secondary particle formed by agglomeration of two or more first primary particles, and a second secondary particle formed by agglomeration of two or more second primary particles in the first secondary particle, and a method of preparing the same. Since the cathode active material according to an embodiment of the present invention may include first primary particles and second primary particles having different average particle diameters, the exfoliation of the cathode active material from a cathode collector may be minimized and performance characteristics, such as high output characteristics and an increase in available capacity, of a secondary battery may be further improved. In addition, since the first secondary particles are porous, the secondary particles are collapsed and fractured due to rolling when used in a cathode.

Abstract: Provided are a method of manufacturing a lithium nickel complex oxide including mixing a nickel-containing mixed transition metal precursor, a lithium compound, and a polyvinylidene fluoride-hexafluoropropylene (PVdF-HFP) copolymer, and heat treating the mixture, a lithium nickel complex oxide manufactured thereby, and a cathode active material including the lithium nickel complex oxide. The method of manufacturing a lithium nickel complex oxide according to an embodiment of the present invention may adjust a ratio of divalent nickel (NiII) to trivalent nickel (NiIII) by using a polyvinylidene fluoride-hexafluoropropylene (PVdF-HFP) copolymer, and thus, the method may improve capacity of a secondary battery.

Abstract: Disclosed are a transition metal precursor for preparation of a lithium composite transition metal oxide, the transition metal precursor including a composite transition metal compound represented by Formula 1 below and a hydrocarbon compound, and a method of preparing the same: MnaMb(OH1?x)2??(1) wherein M is at least two selected from the group consisting of Ni, Co, Mn, Al, Cu, Fe, Mg, B, Cr, and second period transition metals; 0.4?a?1; 0?b?0.6; a+b?1; and 0<x<0.5. The transition metal precursor includes a particular composite transition metal compound and a hydrocarbon compound, and thus, when a lithium composite transition metal oxide is prepared using the same, carbon may be present in lithium transition metal oxide particles and/or on surfaces thereof, whereby a secondary battery including the lithium composite transition metal oxide exhibits excellent rate characteristics and long lifespan.

Abstract: The present invention relates to a positive active material for a lithium battery, a method of preparing the same, and a lithium battery including the same. More particularly, the present invention relates to a positive active material having excellent high-capacity and thermal stability, a method of preparing the same, and a lithium battery including the same.

Abstract: Disclosed is a transition metal precursor used for preparation of lithium composite transition metal oxide, the transition metal precursor comprising a composite transition metal compound represented by the following Formula 1: M(OH1?x)2?yAy/n??(1) wherein M comprises two or more selected from the group consisting of Ni, Co, Mn, Al, Cu, Fe, Mg, B, Cr and second period transition metals; A comprises one or more anions except OH1?x; 0?x?0.5; 0.01?y?0.5; and n is an oxidation number of A. The transition metal precursor according to the present invention contains a specific anion. A lithium composite transition metal oxide prepared using the transition metal precursor comprises the anion homogeneously present on the surface and inside thereof, and a secondary battery based on the lithium composite transition metal oxide thus exerts superior power and lifespan characteristics, and high charge and discharge efficiency.

Abstract: A positive active material according to one embodiment of the present invention includes an internal bulk part and an external bulk part surrounding the internal bulk part and has a continuous concentration gradient of the metal composition from an interface between the internal bulk part and the external bulk part to the surface of the active material. The provided positive active material in which the metal composition is distributed in a continuous concentration gradient has excellent electrochemical characteristics such as a cycle life, capacity, and thermal stability.

Abstract: Disclosed are precursor particles of a lithium composite transition metal oxide for lithium secondary batteries, wherein the precursor particles of a lithium composite transition metal oxide are composite transition metal hydroxide particles including at least two transition metals and having an average diameter of 1 ?m to 8 ?m, wherein the composite transition metal hydroxide particles exhibit monodisperse particle size distribution and have a coefficient of variation of 0.2 to 0.7, and a cathode active material including the same.

Abstract: The present invention relates to a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The positive active material includes an active compound that can intercalate/deintercalate lithium ions, and a bismuth (Bi)-based compound on the surface of the active compound. The bismuth (Bi)-based compound in the positive active material of the present invention decreases resistance against acid generated around a positive active material, and plays a role of suppressing structural change of the positive active material and its reaction with an electrolyte solution and preventing dissolution of transition elements therein. Accordingly, the positive active material of the present invention can improve storage and cycle life characteristics at a high temperature. In addition, it can increase charge and discharge, cycle life, and rate characteristics of a rechargeable lithium battery as well as improve mobility of lithium ions in the electrolyte solution.

Abstract: The present invention relates to a method of preparing a positive active material for a rechargeable lithium battery, a positive active material prepared according to the method, and a rechargeable lithium battery including the same. This manufacturing method includes preparing a complex salt solution by mixing a solution including a metal source material and a chelating agent, disposing the complex salt on the surface of a lithium-included compound by adding a lithium-included compound to the complex salt solution, adding a solution including a fluorine source material to the solution including a lithium-included compound with the complex salt on the surface, and heat-treating the mixture. The present invention provides a simple method of economically preparing a positive active material in which structural transition on the surface is prevented and securing a uniform coating layer.