POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD OF PREPARING THE POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY INCLUDING THE POSITIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY

• Main Authors: You, Yongchan, Lee, Jangwook, Kang, Byungwuk, Kim, Soohyeon, Choi, Seungyeon
• Format: Patent
• Language: English
• Published: 08.08.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

Provided are a positive electrode active material for a lithium secondary battery, a method of preparing the positive electrode active material, and a lithium secondary battery including a positive electrode that includes the positive electrode active material, wherein the positive electrode active material includes large crystal secondary particles of a nickel-based lithium metal oxide which include a plurality of primary particles, wherein the large crystal secondary particles have a hollow structure having pores therein, the primary particles have a size of about 1 μm to about 4 μm, the large crystal secondary particles have a size of about 10 μm to about 18 μm, the positive electrode active material comprises a coating layer containing a cobalt compound which is on surfaces of the large crystal secondary particles of the nickel-based lithium metal oxide, and the large crystal secondary particles of the nickel-based lithium metal oxide are doped with molybdenum.