Lg Energy Solution, Ltd.

Lg Chem, Ltd

Eun Sol Lho

Sang Wook Lee

Wang Mo Jung

So Ra Baek

Min Suk Kang

Dong Hun Lee

Wen Xiu Wang

Hye Lim Jeon

Eun Jo

Sang Min Park

Byung Chun Park

Sung Bin Park

Ji Hoon Ryu

Seul Ki Kim

Ji Young Park

Jin Tae Hwang

Gi Beom Han

Dong Hwi Kim

Dae Jin Lee

Hyeong Ii Kim

Su Yeon Oh

Joong Yeop Do

A positive electrode active material for a secondary battery which includes a nickel-based lithium composite transition metal oxide including nickel (Ni), wherein the lithium composite transition metal oxide satisfies Equation 1 and Equation 2 below80 nm≤crystallite size≤150 nm  [Equation 1]Δ size(|crystallite size−crystallite size|)≤20  [Equation 2]

Positive electrode active material for secondary battery and lithium secondary battery including the same

A positive electrode active material includes a nickel-based lithium composite metal oxide having a Ni content of 80 atm % or greater among transition metals except lithium, and in the form of a single particle or pseudo-single particle. The nickel-based lithium composite metal oxide has a coating layer positioned on the surface thereof, wherein the coating layer contains cobalt. The positive electrode active material also satisfies [Equation 1] 1≤XY/Z≤3, wherein X is the molar number (mol %) of Co in the coating layer based on 100 moles of the nickel-based lithium composite metal oxide, Y is the average particle diameter (μm) of nodules of the nickel-based lithium composite metal oxide, and Z is D(μm) of the positive electrode active material, wherein Z is from 5 μm to 12 μm.

Positive electrode active material and positive electrode including the same

A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), and a glassy coating layer formed on surfaces of particles of the lithium composite transition metal oxide, wherein, in the lithium composite transition metal oxide, an amount of the nickel (Ni) in a total amount of transition metals is 60 mol % or more, and an amount of the manganese (Mn) is greater than an amount of the cobalt (Co), and the glassy coating layer includes a glassy compound represented by Formula 1.LiMO  [Formula 1]

Positive electrode active material for secondary battery, method of preparing the same, and lithium secondary battery including the positive electrode active material

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 positive electrode active material for a secondary battery which includes a nickel-based lithium composite transition metal oxide including nickel (Ni), wherein the lithium composite transition metal oxide satisfies Equation 1 and Equation 2 below80 nm≤crystallite size≤150 nm  [Equation 1]Δsize(|crystallite size−crystallite size|)≤20  [Equation 2]

Provided are various embodiments of a positive electrode for a secondary battery, which in one embodiment includes a first positive electrode material mixture layer formed on a positive electrode collector, and a second positive electrode material mixture layer formed on the first positive electrode material mixture layer, wherein the first positive electrode material mixture layer has an operating voltage of 4.25 V to 6.0 V and includes an active material for overcharge which generates lithium and gas during charge; a method of preparing such a positive electrode for a secondary battery; and a lithium secondary battery including such a positive electrode.

Positive electrode for secondary battery and secondary battery including the 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

The present invention relates to a method for recovering a positive electrode active material from a lithium secondary battery including: 1) separating a positive electrode into a collector and a positive electrode part; 2) removing an organic substance by firing the separated positive electrode part; 3) washing the fired resultant and removing remaining fluorine (F); 4) adding a lithium-containing material into the washed resultant and firing to recover a lithium transition metal oxide.

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Daejeon, South Korea

Eun Sol Lho