Patent number: 11532807
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:
Grant
Filed:
November 6, 2018
Date of Patent:
December 20, 2022
Inventors:
So Ra Baek, Wang Mo Jung, Min Suk Kang, Sang Wook Lee, Eun Sol Lho, Wen Xiu Wang