Abstract: The present exemplary embodiments relate to a positive electrode active material, its manufacturing method, and a lithium secondary battery including the same. The positive electrode active material according to an exemplary embodiment is a metal oxide particle including: a metal oxide particle comprising a central portion and a surface portion located on the surface of the central portion, wherein, the metal oxide particle includes nickel, cobalt, manganese, and doping elements and is composed of a single particle, and the metal oxide particle includes a crystal phase of layered structure belonging to the R-3m space group on the surface, and an average grain size is 1550 ? or more.

Abstract: It is related to a manufacturing method of a negative electrode active material for lithium secondary battery, comprising: preparing an artificial graphite; mixing the artificial graphite and a coal tar to form a coating layer on the artificial graphite; and carbonizing the artificial graphite on which the coating layer is formed, wherein, the artificial graphite has a degree of sphericity of 0.6 to 1; and in the step of preparing an artificial graphite, the artificial graphite contains 20 wt % or more of artificial graphite derived from coal-based coke.

Abstract: A positive active material for a lithium secondary battery and a lithium secondary battery including the same are provided, wherein the positive active material includes lithium, nickel, cobalt, manganese, and a doping element, and the doping element may include Zr, Al, and Ti.

Abstract: The present disclosure relates to a positive electrode active material for rechargeable lithium ion batteries and a method of preparing the positive electrode active material, in which a compound including sulfur is used as an additive in a wet treatment process to remove residual lithium impurities (LiOH, Li2CO3) present on a surface of the positive electrode active material, such that the residual lithium impurities are effectively removed without loss of capacity while a Li-S compound coating layer is formed on the surface thereof, thereby reducing resistance and leakage current.

Abstract: It is related to a positive electrode active material for lithium secondary battery, comprising: a compound represented by Chemical Formula 1, wherein a molar content of lithium present in the structure of the positive electrode active material, measured through neutron diffraction analysis, is 1.01 to 1.15 for 1 mole of the positive electrode active material, a method of preparing it, and a lithium secondary battery including the same. Li1+a(NibM11-b)1-aO2??[Chemical Formula 1] In the Chemical Formula 1, 0<a<0.2, 0.8<b<1, M1 is at least one element selected from Co, Mn, Al, Mg, Ca, Ti, V, Cr, Zr, Nb, Mo, and W.

Abstract: An apparatus for calcining a secondary battery cathode material includes: a calcination furnace including an inner space that includes a temperature rising space, a temperature maintaining space, and a cooling space, which sequentially communicate; a plurality of rollers for transferring a sagger, in which a cathode material is accommodated, from the temperature rising space to the cooling space via the temperature maintaining space; a plurality of heaters arranged along the inner space; a plurality of gas feeding parts for feeding gas to the inner space; and a plurality of exhaust parts for exhausting gas from the inner space, wherein the cross-sectional area of the temperature maintaining space is smaller than the cross-sectional area of the temperature rising space and the cross-sectional area of the cooling space.

Abstract: The present exemplary embodiments relate to a positive electrode active material and a lithium secondary battery including the same. According to an exemplary embodiment, a positive electrode active material for a lithium secondary battery including a metal oxide particle including nickel, cobalt, manganese and aluminum, and three types of doping elements doped on the metal oxide particle is provided.

Abstract: A vertical type apparatus for firing a cathode material of a secondary battery is provided. The vertical type apparatus for firing the cathode material according to the present disclosure includes a plurality of saggers, each having an open upper portion, provided with a through-slit for gas flow in a lower surface thereof, and loaded with the cathode material therein, and a plurality of unit firing furnaces, each having an open upper portion, each plurally stacked in the vertical direction, each receiving the respective sagger.

Abstract: The present exemplary embodiments relate to a positive electrode active material and a lithium secondary battery including the same. According to an exemplary embodiment, a positive electrode active material for a lithium secondary battery including a metal oxide particle including nickel, cobalt and manganese, and five types of doping elements doped on the metal oxide particles is provided.

Abstract: The present invention provides a positive electrode active material, its manufacturing method and a lithium secondary battery containing the same. The positive electrode active material for a lithium secondary battery of the present invention is a positive electrode active material for lithium secondary battery, comprising: a lithium metal oxide particle; and a coating layer positioned on at least part of the lithium metal oxide particle surface; wherein, the coating layer includes any one or more of group 5 elements and group 6 elements, B, LiOH, Li2CO3 and Li2SO4.

Abstract: Provided is a positive active material for a lithium secondary battery including a compound represented by the following formula 1, wherein, a molar content of lithium present in a structure of the positive active material, measured through neutron diffraction analysis, is 1.02 to 1.15 per mole of the positive active material, and a c-axis lattice constant variation ratio of the R-3m structure is less than 2.3% for charge and discharge in the 2.5 V to 4.25 V range, [Chemical Formula 1] Li1+a(NibM11-b)1-aO2 in formula 1 above, 0<a<0.2, 0.8<b<1, and M1 is one or more elements selected from Co, Mn, Al, Mg, Ca, Ti, V, Cr, Zr, Nb, Mo, and W.

Abstract: The present exemplary embodiments relate to positive electrode active materials. The positive electrode active material according to an exemplary embodiment is a metal oxide particle including a center and a surface portion positioned on the surface of the center, where the metal oxide particle includes nickel, cobalt, manganese, and doping elements, and is composed of single particles, and the doping elements include two or more species selected from the group consisting of Zr, Al, B, P, La, Ta, Ti, W, Mo, Si, Ga, Zn, Nb, Ag, Sn, Bi, Au, Y, Ge, V, Cr, and Fe.

Abstract: A positive electrode active material for a lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery including the same, wherein the positive electrode active material is a lithium nickel-based compound particle having a Ni content of 75 mol % or more, and a difference in concentration of Al between the center and the surface in the lithium nickel-based compound particle is less than 1 mol %.

Abstract: It is related to a manufacturing method of negative electrode active material for lithium secondary battery, comprising: preparing an artificial graphite; forming a coating layer covering the artificial graphite by mixing the artificial graphite and a liquid coating material; and carbonizing the artificial graphite on which the coating layer is formed; wherein, the liquid coating material has a viscosity of 300 to 25000 mPa s at 35° C.; a negative electrode active material according to the method; and a lithium secondary battery including the same.

Abstract: The present exemplary embodiments relate to a positive electrode active material and a lithium secondary battery including the same. According to an exemplary embodiment, a positive electrode active material for a lithium secondary battery including a metal oxide particle including nickel, cobalt, manganese and aluminum, and two types of doping elements doped on the metal oxide particle is provided.

Abstract: It relates to a positive electrode active material for a lithium secondary battery and a lithium secondary battery including the same, wherein the positive electrode active material for lithium secondary battery, comprising: a core containing a lithium nickel-based compound having a Ni content of 80 mol % or more; and a coating material positioned on at least a portion of the core surface; wherein, the coating material includes a first coating material containing at least one of group 5 elements and group 6 elements; and S; and a second coating material including B, LiOH, Li2CO3 and Li2SO4, and the second coating material is a needle-like material.

Abstract: The present invention relates to a positive active material for lithium secondary battery, its manufacturing method, and lithium secondary battery including the same, and it provides that a positive active material for lithium secondary battery, comprising: a core and a coating layer, wherein, the core is lithium metal oxide, the coating layer comprises boron, the boron compound in the coating layer comprises a lithium boron oxide and a boron oxide, the lithium boron oxide is included 70 wt % or more and 99 wt % in the entire coating layer, the lithium boron oxide comprises Li2B4O7, with respect to the lithium boron oxide 100 wt %, the content of Li2B4O7 is 55 wt % or more and 99 wt % or less.

Abstract: A positive electrode active material for a lithium secondary battery comprising a compound represented by Chemical Formula 1 is introduced. Li1+mNi1-w-x-y-zCowMnxM1yM2zO2-pXp??[Chemical Formula 1] (In the Chemical Formula 1, M1 and M2 are different from each other, and any one element selected from the group consisting of Al, Mg, Zr, Sn, Ca, Ge, Ti, Cr, Fe, Zn, Y, Ba, La, Ce, Sm, Gd, Yb, Sr, Cu and Ga respectively, X is any one element selected from the group consisting of F, N, S, and P, w, x, y, z, p and m are respectively 0.125<w<0.202, 0.153<x<0.225, 0?y?0.1, 0?z?0.1, 0.34?w+x?0.36, 0?p?0.1, and ?0.1?m?0.2.

Abstract: An apparatus for calcining a secondary battery cathode material includes: a calcination furnace including an inner space that includes a temperature rising space, a temperature maintaining space, and a cooling space, which sequentially communicate; a plurality of rollers for transferring a sagger, in which a cathode material is accommodated, from the temperature rising space to the cooling space via the temperature maintaining space; a plurality of heaters arranged along the inner space; a plurality of gas feeding parts for feeding gas to the inner space; and a plurality of exhaust parts for exhausting gas from the inner space, wherein the cross-sectional area of the temperature maintaining space is smaller than the cross-sectional area of the temperature rising space and the cross-sectional area of the cooling space.

Abstract: A vertical-type firing apparatus for a positive electrode material for a secondary battery, for vertically moving and firing the positive electrode material for the secondary battery, comprises: a vertical-type firing furnace including an exhaust part, an air supply part, and a firing space positioned between the exhaust part and the air supply part; and a heater for heating the firing space of the vertical-type firing furnace, wherein the firing space includes a temperature-raising space, a cooling space, and a temperature-maintaining space located between the temperature-raising space and the cooling space, and the temperature of the temperature-maintaining space is higher than the temperature of the temperature-raising space and the temperature of the cooling space.