POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

• Main Authors: LEE, Chang Hyun, SHIN, Jae Shin, JUNG, Hye Yun, CHOI, Su An, AN, Ji Sun, CHOI, Chang Min, JEON, Sang Hoon
• Format: Patent
• Language: English; French; Korean
• Published: 04.07.2019
• 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

The present invention may provide a positive electrode active material for a lithium secondary battery, a method for manufacturing the same, and a lithium secondary battery comprising the same, wherein the positive electrode active material for a lithium secondary battery includes secondary particles obtained by assembling lithium metal oxide primary particles, the lithium metal oxide particles have a layered structure, and each of the secondary particles has a powder resistance of 80 to 300 ohm-cm and a grain size of 50 nm or less. La présente invention concerne un matériau actif d'électrode positive de batterie secondaire au lithium, son procédé de fabrication et une batterie secondaire au lithium le comprenant, le matériau actif d'électrode positive de batterie secondaire au lithium comprenant des particules secondaires obtenues par agrégation de particules primaires d'oxyde de métal de lithium, les particules d'oxyde de métal de lithium ayant des structures en couches, et chacune des particules secondaires ayant une résistance de poudre s'inscrivant dans une plage de 80 à 300 ohm-cm et une taille de grain inférieure ou égale à 50 nm. 리튬 이차 전지용 양극 활물질, 이의 제조 방법, 및 이를 포함하는 리튬 이차 전지에 대한 것으로, 리튬 금속 산화물 1차 입자가 집합된 2차 입자이며, 상기 리튬 금속 산화물 입자는 층상 구조이며, 상기 2차 입자의 분체 저항은 80내지 300 ohm-cm이고, 결정립 크기 (grain size)가 50nm이하인 리튬 이차 전지용 양극 활물질을 제공할 수 있다.