Patent number: 9543571
Abstract: Disclosed are a precursor for a rechargeable lithium battery, a positive active material including the same, a preparation method thereof, and a rechargeable lithium battery including the positive active material. More particularly, the present invention relates to a precursor including a sheet-shaped plate having a thickness of about 1 nm to about 30 nm and that is represented by the following Chemical Formula 1. NixCoyMn1-x-y-zMz(OH)2??[Chemical Formula 1] In the above Chemical Formula 1, 0<x<1, 0?y<1, 0.5?1-x-y-z, and 0?z<1, and M is at least one kind of metal selected from the group consisting of Al, Mg, Fe, Cu, Zn, Cr, Ag, Ca, Na, K, In, Ga, Ge, V, Mo, Nb, Si, Ti, and Zr.
Type:
Grant
Filed:
September 18, 2012
Date of Patent:
January 10, 2017
Assignee:
KOREA ELECTRONICS TECHNOLOGY INSTITUTE
Inventors:
Jun Ho Song, Young Jun Kim, Jeom-Soo Kim, Woo Suk Cho, Jae-Hun Kim, Jun Sung Lee, Jin Hwa Kim, Kyoung Joon Lee