Abstract: A positive active material for a rechargeable lithium battery, a method for manufacturing the same, and a rechargeable lithium battery including the same are provided. A positive active material for a rechargeable lithium battery includes a compound that is capable of reversibly intercalating or deintercalating lithium, wherein the compound is formed of a core portion and a coating layer, the core portion is doped with M, and the coating layer includes Al and B, wherein M is Zr, Ti, Mg, Ca, Al, B, V, Zn, Mo, Ni, Co, Mn, or a combination thereof.

Abstract: In an embodiment of the present invention, a positive active material for a lithium secondary battery is represented by Formula 1, and includes a core including a compound having a core portion and a surface portion, and the compound has a lower L3/L2 intensity ratio of Ni in the surface portion than an L3/L2 intensity ratio of Ni in the core portion. Li[LizA(1-z-a)Da]EbO2-b??[Formula 1] (In the above formula (1), A is Ni?Co?Mn?, D is at least one element selected from the group consisting of Na, K, Mg, Ca, Sr, Ni, Co, Ti, Al, B, Si, Sn, Mn, Cr, Fe, V, Zr, Nb, and Mo, E is at least one element selected from the group consisting of P, F, and S, ?0.05?z?0.1, 0?a?0.05, 0?b?0.05, 0.3???0.9, 0.05???0.4, and 0.05???0.4.) (The L3/L2 intensity ratio of Ni is the oxidation number of Ni measured by electronic energy loss spectroscopy (EELS).).

Abstract: There are provided a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing the same. The cathode active material for a lithium secondary battery includes: a compound reversibly intercalating and deintercalating lithium; and a coating layer positioned on at least a portion of a surface of the compound, wherein the coating layer is a composite coating layer containing Li3PO4 and further containing a lithium metal oxide, a metal oxide, and/or a combination thereof, the lithium metal oxide or the metal oxide containing Zr.

Abstract: In an embodiment of the present invention, a positive active material for a lithium secondary battery is represented by Formula 1, and includes a core including a compound having a core portion and a surface portion, and the compound has a lower L3/L2 intensity ratio of Ni in the surface portion than an L3/L2 intensity ratio of Ni in the core portion. Li[LizA(1-z-a)Da]EbO2-b ??[Formula 1] (In the above formula (1), A is Ni?Co?Mn?, D is at least one element selected from the group consisting of Na, K, Mg, Ca, Sr, Ni, Co, Ti, Al, B, Si, Sn, Mn, Cr, Fe, V, Zr, Nb, and Mo, E is at least one element selected from the group consisting of P, F, and S, ?0.05?z?0.1, 0?a?0.05, 0?b?0.05, 0.3???0.9, 0.05???0.4, and 0.05???0.4.) (The L3/L2 intensity ratio of Ni is the oxidation number of Ni measured by electronic energy loss spectroscopy (EELS).

Abstract: There are provided a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing the same. The cathode active material for a lithium secondary battery includes: a core made of a compound reversibly intercalating and deintercalating lithium; and a coating layer positioned on at least a portion of a surface of the compound, wherein the coating layer is a composite coating layer containing Li3PO4 and LiF, and further containing a lithium metal compound, a metal oxide, a metal fluoride compound, and/or a combination thereof, and the core is doped with fluorine.

Abstract: Provided is a positive active material for a lithium secondary battery, which is a compound capable of reversible intercalation and deintercalation of lithium and having secondary particles formed by the aggregation of primary particles, wherein the size of crystal grains is between 0.0593 and 0.0610 ?m at a (003) peak in the spectrum analysis of X-ray diffraction analysis.

Abstract: A positive active material for a rechargeable lithium battery, a method for manufacturing the same, and a rechargeable lithium battery including the same are provided. A positive active material for a rechargeable lithium battery includes a compound that is capable of reversibly intercalating or deintercalating lithium, wherein the compound is formed of a core portion and a coating layer, the core portion is doped with M, and the coating layer includes Al and B, wherein M is Zr, Ti, Mg, Ca, Al, B, V, Zn, Mo, Ni, Co, Mn, or a combination thereof.

Abstract: There are provided a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing the same. The cathode active material for a lithium secondary battery includes: a core made of a compound reversibly intercalating and deintercalating lithium; and a coating layer positioned on at least a portion of a surface of the compound, wherein the coating layer is a composite coating layer containing Li3PO4 and LiF, and further containing a lithium metal compound, a metal oxide, a metal fluoride compound, and/or a combination thereof, and the core is doped with fluorine.

Abstract: There are provided a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing the same. The cathode active material for a lithium secondary battery includes: a compound reversibly intercalating and deintercalating lithium; and a coating layer positioned on at least a portion of a surface of the compound, wherein the coating layer is a composite coating layer containing Li3PO4 and further containing a lithium metal oxide, a metal oxide, and/or a combination thereof, the lithium metal oxide or the metal oxide containing Zr.

Abstract: There are provided a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing the same. The cathode active material for a lithium secondary battery includes: a compound reversibly intercalating and deintercalating lithium; and a coating layer positioned on at least a portion of a surface of the compound, wherein the coating layer is a composite coating layer containing Li3PO4 and LiF, and further containing a lithium metal compound, a metal oxide, a metal fluoride compound, and/or a combination thereof.

Abstract: A cathode active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, wherein the cathode active material includes a compound being capable of intercalating and deintercallating lithium, wherein the compound consists of a core part and a coating layer, and the core part is doped with M1 and M2 while the coating layer includes B, are provided. The M1 and M2 are independently at least one metal selected from Zr, Ti, Mg, Ca, V, Zn, Mo, Ni, Co, and Mn, and M1 and M2 are different.