Publication number: 20220052331
Abstract: A method of preparing an octahedral-structured lithium manganese-based positive electrode active material includes mixing a manganese raw material, a raw material including doping element M1, wherein the doping element M1 is at least one element selected from the group consisting of Mg, Al, Li, Zn, B, W, Ni, Co, Fe, Cr, V, Ru, Cu, Cd, Ag, Y, Sc, Ga, In, As, Sb, Pt, Au, and Si, and a lithium raw material and sintering the mixture in an oxygen atmosphere to prepare a lithium manganese oxide having an octahedral structure and doped with the doping element M1, wherein the sintering includes performing first sintering at 400° C. to 700° C. for 3 hours to 10 hours and performing second sintering at 700° C. to 900° C. for 10 hours to 20 hours. Also provided is an octahedral-structured lithium manganese-based positive electrode active material prepared by the above preparation method.
Type:
Application
Filed:
November 1, 2019
Publication date:
February 17, 2022
Applicant:
LG Energy Solution, Ltd.
Inventors:
Eun Sol Lho, Wang Mo Jung, Min Suk Kang, Sang Wook Lee, So Ra Baek, Wen Xiu Wang
Publication number: 20220045322
Abstract: 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 M1 (where the doping element M1 is a metallic element including Al) and doping element M2 (where the doping element M2 is 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 M1 can be in an amount of 100 ppm to 10,000 ppm, and the doping element M1 and the doping element M2 are included in a weight ratio of 50:50 to 99:1.
Type:
Application
Filed:
November 1, 2019
Publication date:
February 10, 2022
Applicant:
LG Energy Solution, Ltd.
Inventors:
Wen Xiu Wang, Wang Mo Jung, Min Suk Kang, Sang Wook Lee, So Ra Baek, Eun Sol Lho
Publication number: 20200119341
Abstract: 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, Li1+aMn2?bM1bO4?cAc ??[Formula 1] wherein, in Formula 1, M1 is 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?a?0.2, 0<b?0.5, and 0?c?0.1.
Type:
Application
Filed:
November 6, 2018
Publication date:
April 16, 2020
Applicant:
LG Chem, Ltd.
Inventors:
So Ra Baek, Wang Mo Jung, Min Suk Kang, Sang Wook Lee, Eun Sol Lho, Wen Xiu Wang