Publication number: 20140242463
Abstract: The present invention provides a positive active material for a secondary lithium battery, a method of preparing the positive active material, and a secondary lithium battery including the positive active material, wherein the positive active material includes a lithium metal composite oxide core represented by the following Chemical Formula 1, and a coating layer including a fluorine compound and positioned at a shell of the lithium metal composite oxide core. LiwNixCoyMn1-x-y-zMzO2??[Chemical Formula 1] (1.2?w?1.5, 0<x<1, 0?y<1, 0.5?1-x-y-z, and M is at least one 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:
Application
Filed:
September 18, 2012
Publication date:
August 28, 2014
Applicant:
KOREA ELECTRONICS TECHNOLOGY INSTITUTE
Inventors:
Jun Ho Song, Young Jun Kim, Jeom-Soo Kim, Woo Suk Cho, Jae-Hun Kim, Jin Hwa Kim
Publication number: 20140227594
Abstract: Disclosed are a precursor of a positive active material for a rechargeable lithium battery and a preparation method thereof, and a positive active material and a rechargeable lithium battery including the same, and specifically a precursor for a rechargeable lithium battery is represented by the following Chemical Formula 1, wherein a manganese ion concentration deviation in the precursor is within 3 wt %. NixCoyMn1-x-y-zMz(OH)2??[Chemical Formula 1] (0<x<1, 0?y<1, 0.5?1?x?y?z, 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:
Application
Filed:
September 24, 2012
Publication date:
August 14, 2014
Applicant:
KOREA ELECTRONICS TECHNOLOGY INSTITUTE
Inventors:
Jun Ho Song, Young Jun Kim, Jae-Hun Kim