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    LITHIUM COMPLEX OXIDE
    3.
    发明申请
    LITHIUM COMPLEX OXIDE 有权

    公开(公告)号：US20210135216A1

    公开(公告)日：2021-05-06

    申请号：US17085519

    申请日：2020-10-30

    申请人： ECOPRO BM CO., LTD.

    发明人： Jung Han LEE ,  Seung Woo CHOI ,  Moon Ho CHOI ,  Jun Won SUH ,  Jin Kyeong YUN ,  Mi Hye YUN ,  Kwang Seok CHOI ,  Joong Ho BAE ,  Jin Oh SON

    IPC分类号： H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/36 ,  C01G53/00

    摘要： A lithium complex oxide includes a mixture of first particles of n1 (n1>40) aggregated primary particles and second particles of n2 (n2≤20) aggregated primary particles, the lithium complex oxide represented by Chemical Formula 1 and having FWHM (deg., 2θ) of 104 peak in XRD, defined by a hexagonal lattice having R-3m space group, in a range of Formula 1: LiaNixCoyMnzM1-x-y-zO2,  [Chemical Formula 1] where M is selected from: B, Ba, Ce, Cr, F, Mg, Al, Cr, V, Ti, Fe, Zr, Zn, Si, Y, Nb, Ga, Sn, Mo, W, P, Sr, and any combination thereof, 0.9≤a≤1.3, 0.6≤x≤1.0, 0.0≤y≤=0.4, 0.0≤z≤0.4, and 0.0≤1−x−y−z≤0.4, −0.025≤FWHM(104)−{0.04+(xfirst particle−0.6)×0.25}≤0.025,  [Formula 1] where FWHM(104) is represented by Formula 2, FWHM(104)={(FWHMChemical Formula 1 powder(104)−0.1×mass ratio of second particles)/mass ratio of first particles}−FWHMSi powder(220).  [Formula 2]

    POSITIVE ELECTRODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
    7.
    发明申请
    POSITIVE ELECTRODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME 有权

    公开(公告)号：US20230139863A1

    公开(公告)日：2023-05-04

    申请号：US18046045

    申请日：2022-10-12

    申请人： ECOPRO BM CO., LTD.

    发明人： Joong Ho BAE ,  Du Yeol KIM ,  Moon Ho CHOI ,  Jun Won SUH ,  Sun Kyu KIM ,  Jung Han LEE ,  Seung Woo CHOI

    IPC分类号： H01M4/36 ,  H01M4/505 ,  H01M4/525

    摘要： The present invention relates to a positive electrode active material and a lithium secondary battery comprising the same, and more specifically, to a positive electrode active material including a lithium composite oxide containing at least nickel and titanium, wherein the titanium is present in an oxide form in at least a portion of the surface of the lithium composite oxide at the same time as being doped in the lithium composite oxide, and thus it is possible to simultaneously improve the output efficiency and high-temperature lifetime characteristics (high-temperature cycle capacity retention rate) of a lithium secondary battery using the positive electrode active material, and a lithium secondary battery including the same.