Patent number: 10938030
Abstract: A positive active material, including: a lithium transition metal composite oxide represented by Formula 1: LiaNibM1cM2dM3eO2??Formula 1 wherein, in Formula 1, M1 comprises Co, Mn, or a combination thereof, M2 comprises Mg and Ti, M3 comprises Al, B, Ca, Na, K, Cr, V, Fe, Cu, Zr, Zn, Sr, Sb, Y, Nb, Ga, Si, Sn, Mo, W, Ba, a rare earth element, or a combination thereof, 0.9?a?1.1, 0.7?b<1.0, 0<c?0.3, 0<d?0.03, 0?e?0.05, and 0.95?(b+c+d+e)?1.05, and a molar ratio of Ti:Mg in M2 is about 1:1 to about 3:1.
Type:
Grant
Filed:
September 25, 2017
Date of Patent:
March 2, 2021
Assignees:
SAMSUNG ELECTRONICS CO., LTD., SAMSUNG SDI CO. LTD.
Inventors:
Dongwook Shin, San Moon, Jinsu Ha, Jinhwan Park, Changsoo Lee