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    Positive electrode materials having a superior hardness strength
    83.
    发明申请
    Positive electrode materials having a superior hardness strength 有权

    公开(公告)号：US20220255075A1

    公开(公告)日：2022-08-11

    申请号：US17718515

    申请日：2022-04-12

    Applicant: Umicore ,  Umicore Korea Ltd.

    Inventor： Maxime BLANGERO ,  Da-In CHOI ,  WooRam CHO ,  JiHye KIM

    IPC: H01M4/525 ,  H01M4/505 ,  C01G53/00 ,  H01M10/0525

    Abstract: A powderous positive electrode material for a lithium secondary battery has the general formula Li1+x[Ni1−a−b−cMaM′bM″c]1−xO2−z. M is one or more elements of the group Mn, Zr and Ti. M′ is one or more elements of the group Al, B and Co. M″ is a dopant different from M and M′, and x, a, b and c are expressed in mol with −0.02≤x≤0.02, 0≤c≤0.05, 0.10≤(a+b)≤0.65 and 0≤z≤0.05. The material has an unconstrained cumulative volume particle size distribution value (Γ0(D10P=0)), a cumulative volume particle size distribution value after having been pressed at a pressure of 200 MPa (ΓP(D10P=200)) and a cumulative volume particle size distribution value after having been pressed at a pressure of 300 MPa (ΓP(D10P=300)). When ΓP(D10P=200) is compared to Γ0(D10P=0), the relative increase in value is less than 100%. When ΓP(D10P=300) is compared to Γ0(D10P=0), the relative increase in value is less than 120%.

    Positive electrode materials having a superior hardness strength
    89.
    发明申请
    Positive electrode materials having a superior hardness strength 有权

    公开(公告)号：US20210005891A1

    公开(公告)日：2021-01-07

    申请号：US17019626

    申请日：2020-09-14

    Applicant: Umicore ,  Umicore Korea Ltd.

    Inventor： Maxime BLANGERO ,  Da-In CHOI ,  WooRam CHO ,  JiHye KIM

    IPC: H01M4/525 ,  H01M4/505 ,  C01G53/00 ,  H01M10/0525

    Abstract: A powderous positive electrode material for a lithium secondary battery has the general formula Li1+x[Ni1−a−b−cMaM′bM″c]1−xO2−z. M is one or more elements of the group Mn, Zr and Ti. M′ is one or more elements of the group Al, B and Co. M″ is a dopant different from M and M′, and x, a, b and c are expressed in mol with −0.02≤x≤0.02, 0≤c≤0.05, 0.10≤(a+b)≤0.65 and 0≤z≤0.05. The material has an unconstrained cumulative volume particle size distribution value (Γ0(D10P=0)), a cumulative volume particle size distribution value after having been pressed at a pressure of 200 MPa (ΓP(D10P=200)) and a cumulative volume particle size distribution value after having been pressed at a pressure of 300 MPa (ΓP(D10P=300)). When ΓP(D10P=200) is compared to Γ0(D10P=0), the relative increase in value is less than 100%. When ΓP(D10P=300) is compared to Γ0(D10P=0), the relative increase in value is less than 120%.

    Lithium metal oxide cathode powders for high voltage lithium-ion batteries
    90.
    发明授权
    Lithium metal oxide cathode powders for high voltage lithium-ion batteries 有权

    公开(公告)号：US10854874B2

    公开(公告)日：2020-12-01

    申请号：US15545348

    申请日：2016-01-20

    Applicant: Umicore ,  Umicore Korea Ltd.

    Inventor： Xin Xia ,  Jens Paulsen ,  Shinichi Kumakura ,  Song-Yi Han

    IPC: H01M4/36 ,  H01M4/525 ,  H01M4/1391 ,  H01M4/04 ,  H01M4/131 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02 ,  C01G53/00

    Abstract: This invention discloses a lithium metal oxide powder for a cathode material in a rechargeable battery, consisting of a core and a surface layer, the core having a layered crystal structure comprising the elements Li, M and oxygen, wherein M has the formula M=(Niz(Ni1/2Mn1/2)yCox)1-kAk, with 0.15≤x≤0.30, 0.20≤z≤0.55, x+y+z=1 and 0≤k≤0.1, wherein A is a dopant, wherein the Li content is stoichiometrically controlled with a molar ratio 0.95≤Li:M≤1.10; and wherein the surface layer comprises the elements Li, M′ and oxygen, wherein M′ has the formula M′=(Niz′(Ni1/2Mn1/2)y′Cox′)1-k′Ak′, with x′+y′+z′=1 and 0≤k′≤0.1, and wherein y′/(y′+2z′)≥1.1*[y/(y+2z)]. The surface layer may also comprise at least 3 mol % Al, the Al content in the surface layer 10 being determined by XPS.

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