Abstract: Disclosed are novel precursor particles for preparing a cathode active material including transition metal precursor particles containing one or more transition metals, and one or more of an alkali metal and an alkaline earth metal, wherein the alkali metal and the alkaline earth metal are contained in one or more of inner and outer parts of the transition metal precursor particles, and a novel precursor powder including the novel precursor particles.

Abstract: Disclosed, as a particle for cathode active materials, is a novel one-body particle for cathode active materials, including a core of lithium transition metal oxide containing Ni and a surface-layer portion formed on at least a part of the core, wherein the surface-layer portion contains both Co and a structure-stabilizing element, the core is present as a non-aggregated primary particle, and the structure-stabilizing element has a bond dissociation energy (BDE) with oxygen (O) greater than a bond dissociation energy (BDE) of Co and oxygen (O).

Abstract: Disclosed are a secondary battery, an active material, a method for preparing the same, and a lithium secondary battery including the same. In an embodiment, provided is a secondary battery including a positive electrode, a negative electrode and an electrolyte, wherein the secondary battery further includes a reaction-inducing substance located in any one of the positive electrode, the negative electrode and the electrolyte, wherein the reaction-inducing substance forms a reaction product by consuming thermal energy when exposed to a predetermined temperature or higher in a use environment of the secondary battery, thereby improving thermal safety of the secondary battery.

Abstract: Disclosed is a unit battery for manufacture of battery modules or battery packs, the unit battery including an electrode assembly mounted in a cell case, the electrode assembly being capable of being reversibly charged and discharged, a positive electrode body portion, to which a positive electrode of the electrode assembly is connected, the positive electrode body portion being configured to serve as a positive electrode terminal for external connection while forming one surface of the cell case, a negative electrode body portion, to which a negative electrode of the electrode assembly is connected, the negative electrode body portion being configured to serve as a negative electrode terminal for external connection while forming the other surface of the cell case, and an insulation portion configured to electrically insulate the positive electrode body portion and the negative electrode body portion from each other.

Abstract: Disclosed is a cathode active material for a lithium secondary battery including a core containing lithium composite metal oxide, and a coating layer disposed on the core and including an amorphous phase, wherein the amorphous phase contains lithium oxide and boron oxide in a form of mixture.

Abstract: Disclosed is a device for preparing multi-component metal hydroxide including a raw material feeder configured to feed raw materials including a metal raw material, a pH adjuster and a complexing agent, a reactor configured to react the raw materials fed from the raw material feeder to prepare a reaction solution and grow particles of multi-component metal hydroxide contained in the reaction solution, a storage tank configured to store the reaction solution transferred from the reactor, a first duct configured to transfer the raw materials from the raw material feeder to the reactor, a second duct configured to transfer the reaction solution from the reactor to the storage tank, a third duct configured to transfer the reaction solution from the storage tank to the reactor, and an operation controller configured to control operations of the reactor and the storage tank to circulate the reaction solution between the reactor and the storage tank until the particles of multi-component metal hydroxide grow to a ta

Abstract: Disclosed is a coating material for coating a surface of a kiln for preparing an active material, the coating material being represented by the following Formula 1: NiaXz??(1) wherein an equation of a+z=1 is satisfied, with the proviso that 0.2?a<1.0 and 0<z?0.8 are satisfied, and X is at least one element selected from the group consisting of W, Cr, Co, Fe, Cu, Na, Al, Mg, Si, Zn, K, Ti, Mo, N, B, P, C, Ta, Nb, O, Mn, Sn, Ag and Zr, or an alloy or compound of two or more elements selected therefrom.

Abstract: Disclosed is an active material for a secondary battery, the active material containing aggregates, each including a plurality of single particles, or a mixture of the aggregates with non-aggregated single particles, the active material including a first region having a relatively high content of an additional element (X) and a second region having a relatively low content of the additional element (X), wherein the first region is at least one region of a grain boundary formed whereby the surfaces of the single particles constituting the aggregate contact one another and a void (pore or gap) between the single particles, and/or a surface region of each single particle, wherein the additional element (X) includes at least one selected from the group consisting of Zr, Ti, Al, W, B, P, Mn, Ni, Mg, Cr, Ca, V, Sr, Y, F, Zn, Ga, Sn, Ru, Ce, La, and Si.

Abstract: Disclosed are a transition metal precursor for preparation of a lithium transition metal oxide, in which a ratio of tap density of the precursor to average particle diameter D50 of the precursor satisfies the condition represented by Equation 1 below, and a lithium transition metal oxide prepared using the same.

Abstract: Disclosed are novel precursor particles for preparing a cathode active material including transition metal precursor particles containing one or more transition metals, and one or more of an alkali metal and an alkaline earth metal, wherein the alkali metal and the alkaline earth metal are contained in one or more of inner and outer parts of the transition metal precursor particles, and a novel precursor powder including the novel precursor particles.

Abstract: Disclosed is a cathode active material for a lithium secondary battery including a core containing lithium composite metal oxide and a coating layer disposed on the core and having an amorphous phase, wherein the amorphous phase contains lithium oxide and tungsten oxide in a form of mixture.

Abstract: Disclosed is a cathode active material for lithium secondary batteries containing lithium transition metal composite oxide in the form of primary particles having a one-body structure, the cathode active material having a ratio (R/L) of a right area (R) to a left area (L) in a particle size distribution (PSD) graph of less than 1.1, based on a maximum point of a main peak in the particle size distribution (PSD) graph, in which an X-axis represents a particle size (?m) and a Y-axis represents a relative particle amount (%).

Abstract: Disclosed is a lithium composite metal oxide containing nickel (Ni) and titanium (Ti) as main components. The lithium composite metal oxide, which is a cathode active material for a lithium secondary battery, has high charge capacity and desirable lifespan characteristics, and realizes optimal performance of a lithium secondary battery when used in combination with an anode active material having high energy density. In particular, the lithium composite metal oxide is capable of maintaining optimal balance with the charge and discharge efficiency of the Si-based anode active material and thus enables manufacture of a high-performance lithium secondary battery.

Abstract: Disclosed is a cathode active material for a lithium secondary battery including a core containing lithium composite metal oxide and a coating layer disposed on the core and having an amorphous phase, wherein the amorphous phase contains lithium oxide, tungsten oxide, and boron oxide in a form of mixture.

Abstract: Disclosed is a secondary battery including a positive electrode, a negative electrode and an electrolyte, wherein the secondary battery further includes a reaction-inducing substance located in any one of the positive electrode, the negative electrode and the electrolyte, wherein the reaction-inducing substance forms a reaction product when exposed to a predetermined temperature or higher in a use environment of the secondary battery, wherein the reaction product is a non-conductor.

Abstract: Disclosed are a lithium transition metal oxide and a lithium secondary battery, in which a ratio of average particle diameter D50 of the lithium transition metal oxide to average particle diameter D50 of a transition metal precursor for preparation of the lithium transition metal oxide satisfies the condition represented by Equation 3 below: 0 < Average ? ? particle ? ? diameter ? ? D ? ? 50 ? ? of ? ? lithium ? ? transition ? metal ? ? oxide Average ? ? particle ? ? diameter ? ? D ? ? 50 ? ? of ? ? transition ? ? metal ? precursor < 1.2 .

Abstract: Disclosed are a cathode active material for a lithium secondary battery including a core containing lithium composite metal oxide, and a coating layer disposed on the core, containing a mixture of lithium oxide, tungsten oxide, boron oxide and phosphorus oxide, and having an amorphous phase, and a lithium secondary battery including the same.

Abstract: Disclosed are a secondary battery, an active material, a method for preparing the same, and a lithium secondary battery including the same. In an embodiment, provided is a secondary battery including a positive electrode, a negative electrode and an electrolyte, wherein the secondary battery further includes a reaction-inducing substance located in any one of the positive electrode, the negative electrode and the electrolyte, wherein the reaction-inducing substance forms a reaction product by consuming thermal energy when exposed to a predetermined temperature or higher in a use environment of the secondary battery, thereby improving thermal safety of the secondary battery.

Abstract: Disclosed is a secondary battery including a positive electrode, a negative electrode and an electrolyte, wherein the secondary battery further includes a reaction-inducing substance located in any one of the positive electrode, the negative electrode and the electrolyte, wherein the reaction-inducing substance forms a reaction product when exposed to a predetermined temperature or higher in a use environment of the secondary battery, wherein the reaction product is a non-conductor.

Abstract: Disclosed is a cathode active material for secondary batteries comprising at least one compound selected from the following formula 1: (1?s?t)[Li(LiaMn(1?a?x?y)NixCoy)O2]*s[Li2CO3]*t[LiOH]??(1) wherein 0<a<0.2, 0<x<0.9, 0<y<0.5, a+x+y<1, 0<s<0.03, and 0<t<0.03; and a, x and y represent a molar ratio, and a and t represent a weight ratio. The cathode active material has long lifespan at room temperature and high temperatures and provides superior stability, although charge and discharge are repeated at a high current.