Lg Energy Solution, Ltd.

Wen Xiu Wang

Wang Mo Jung

Sang Min Park

Sung Bin Park

Sang Wook Lee

Min Suk Kang

Seul Ki Kim

So Ra Baek

Tae-Gyun Noh

Eun Sol Lho

Min-Gyu Kim

Sung-Bin Park

Do-Hwa Jung

Tae-In Kim

Sung-Hwan Kim

Seung-Hark Park

Joong Yeop Do

Do-Yeon Kwon

In one arrangement, the present disclosure relates to a positive electrode active material including a nickel-cobalt-manganese-based lithium transition metal oxide which contains nickel in an amount of 60 mol % or more based on a total number of moles of metals excluding lithium, wherein the nickel-cobalt-manganese-based lithium transition metal oxide is doped with doping element M(where the doping element Mis a metallic element including Al) and doping element M(where the doping element Mis at least one metallic element selected from the group consisting of Mg, La, Ti, Zn, B, W, Ni, Co, Fe, Cr, V, Ru, Cu, Cd, Ag, Y, Sc, Ga, In, As, Sb, Pt, Au, and Si), where the doping element Mcan be in an amount of 100 ppm to 10,000 ppm, and the doping element Mand the doping element Mare included in a weight ratio of 50:50 to 99:1.

Positive electrode active material, and positive electrode and lithium secondary battery which include the positive electrode active material

The present disclosure relates to a positive electrode active material for a secondary battery, the positive electrode active material being a lithium composite transition metal oxide particle including nickel (Ni) and cobalt (Co) and including at least one of manganese (Mn) and aluminum (Al), wherein the lithium composite transition metal oxide particle includes 60 mol % or greater of the nickel (Ni) in all metals excluding lithium, a doping element is doped on the lithium composite transition metal oxide particle, and the particle intensity of the lithium composite transition metal oxide particle is 210 MPa to 290 MPa.

Positive electrode active material for secondary battery, preparation method thereof, and positive electrode for secondary battery including same

A spinel-structured lithium manganese-based positive electrode active material includes a lithium manganese oxide represented by Formula 1, and a coating layer which is disposed on a surface of the lithium manganese oxide and includes at least one coating element selected from the group consisting of aluminum, titanium, tungsten, boron, fluorine, phosphorus, magnesium, nickel, cobalt, iron, chromium, vanadium, copper, calcium, zinc, zirconium, niobium, molybdenum, strontium, antimony, bismuth, silicon, and sulfur, and a positive electrode and a lithium secondary battery which include the positive electrode active material,LiMnMOA&#x2003;&#x2003;[Formula 1] wherein, in Formula 1, Mis at least one metallic element including lithium (Li), A is at least one element selected from the group consisting of fluorine, chlorine, bromine, iodine, astatine, and sulfur, 0&#x2264;a&#x2264;0.2, 0&#x3c;b&#x2264;0.5, and 0&#x2264;c&#x2264;0.1.

Spinel-structured lithium manganese-based positive electrode active material, and positive electrode and lithium secondary battery which include the positive electrode active material

The present disclosure relates to a positive electrode material including a spinel-structured lithium manganese-based first positive electrode active material and a lithium nickel-manganese-cobalt-based second positive electrode active material, wherein the first positive electrode active material includes a lithium manganese oxide represented by Formula 1 and a coating layer which is disposed on a surface of the lithium manganese oxide, the second positive electrode active material is represented by Formula 2, and an average particle diameter of the second positive electrode active material is greater than an average particle diameter of the first positive electrode active material, and a positive electrode and a lithium secondary battery which include the positive electrode material:LiMnMOA&#x2003;&#x2003;[Formula 1]Li[NiCoMnM]OB&#x2003;&#x2003;[Formula 2]

Positive electrode material, positive electrode, and lithium secondary battery which include spinel-structured lithium manganese-based positive electrode active material

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Daejeon, South Korea

Wen Xiu Wang