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    Olivine Composition with Improved Cell Performance
    25.
    发明申请
    Olivine Composition with Improved Cell Performance 审中-公开
    橄榄石组合与改善的细胞性能

    公开(公告)号：US20160006035A1

    公开(公告)日：2016-01-07

    申请号：US14771237

    申请日：2013-03-08

    Applicant: UMICORE ,  UMICORE KOREA LTD.

    Inventor： DaeHyun KIM ,  Jens PAULSEN ,  HeonPyo HONG

    IPC: H01M4/58

    CPC classification number: H01M4/5825 ,  C01B25/45 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

    Abstract: The invention discloses an olivine cathode material comprising Li, M and PO 4, having a non-stoichiometric composition wherein: —the phosphor stoichiometry PO 4:[(Li+M)/2] is between 0.940 and 1.020, —the lithium to metal ratio Li:M is between 1.040 and 1.150, and wherein M=Fe−x−z′ Mn x D z′, with 0.10 0, D being a dopant comprising either one or both of Cr and Mg. In one embodiment PO 4:[(Li+M)/2] is between 0.960 and 1.000, resulting in an even better performing material. Performance is improved even more in another embodiment wherein PO 4:[(Li+M)/2] is less than 1.000. Improvements in performance are also obtained for either an embodiment wherein the lithium to metal ratio Li:M is between 1.070 and 1.120; or an embodiment wherein the manganese to iron ratio Mn/(Mn+Fe) is between 0.25 and 0.75; or for another embodiment wherein z′

    Abstract translation: 本发明公开了一种包含Li，M和PO 4的橄榄石阴极材料，具有非化学计量组成，其中： - 化学计量PO 4：[（Li + M）/ 2]在0.940和1.020之间，锂与金属 比例Li：M在1.040和1.150之间，其中M = Fe-x-z'Mn x D z'，其中0.10 0，D是包含Cr和 镁 在一个实施方案中，PO 4：[（Li + M）/ 2]在0.960和1.000之间，导致更好的材料。 在PO 4：[（Li + M）/ 2]小于1.000的另一个实施方案中，性能得到改善。 对于其中锂与金属之比Li:M在1.070和1.120之间的实施例，也可获得性能的改进; 或其中锰与铁的比例Mn /（Mn + Fe）为0.25至0.75的实施方案; 或者z'<0.05的另一个实施方案。

    PRECURSORS OF CATHODE MATERIALS FOR A RECHARGEABLE LITHIUM ION BATTERY
    27.
    发明申请
    PRECURSORS OF CATHODE MATERIALS FOR A RECHARGEABLE LITHIUM ION BATTERY 审中-公开

    公开(公告)号：US20200017370A1

    公开(公告)日：2020-01-16

    申请号：US16568756

    申请日：2019-09-12

    Applicant: Umicore ,  Umicore Korea Ltd.

    Inventor： Dae-Hyun KIM ,  Jens PAULSEN ,  JinDoo OH ,  Maxime BLANGERO

    IPC: C01G51/00 ,  H01M4/525 ,  H01M10/0525

    Abstract: A method for manufacturing a cobalt based hydroxide carbonate compound having a malachite-rosasite mineral structure, comprising the steps of: providing an first aqueous solution comprising a source of Co, providing a second aqueous solution comprising Na2CO3, mixing both solutions in a precipitation reactor at a temperature above 70° C., thereby precipitating a cobalt based hydroxide carbonate compound whilst evacuating from the reactor any CO2 formed by the precipitation reaction, wherein the residence time of the compound in the reactor is between 1 and 4 hours, and recovering the cobalt based hydroxide carbonate compound. The cobalt based hydroxide carbonate compound is used as a precursor of a lithium cobalt based oxide usable as an active positive electrode material in lithium ion batteries.

    Precursor and Method for Preparing Ni Based Li Transition Metal Oxide Cathodes for Rechargeable Batteries
    29.
    发明申请
    Precursor and Method for Preparing Ni Based Li Transition Metal Oxide Cathodes for Rechargeable Batteries 审中-公开

    公开(公告)号：US20180351174A1

    公开(公告)日：2018-12-06

    申请号：US15757016

    申请日：2016-08-25

    Applicant: Umicore ,  Umicore Korea Ltd.

    Inventor： Jens PAULSEN ,  JiHye KIM ,  Jin-Doo OH ,  Jing ZHANG

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

    Abstract: A crystalline precursor compound is described for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor having a general formula Li1−a ((Niz(Ni1/2 Mn1/2)y Cox)1−k Ak)1+a O2, wherein x+y+z=1, 0.1≤x≤0.4, 0.25≤z≤0.55, A is a dopant, 0≤k≤0.1, and 0.04≤a≤0.50, wherein the pre cursor has a crystalline size L expressed in nm, with 77−(67*z)≤L≤97−(67*z). Also a method is described for manufacturing a positive electrode material having a general formula Li1−a′ ((Niz (Ni1/2 Mn1/2)y Ak)1−a′ O2, wherein x+y+z=1, 0.1≤x≤0.4, 0.25≤z≤0.55, A is a dopant, 0≤k≤0.1, and 0.01≤a′≤0.10 by sintering the crystalline precursor compound in an oxidizing atmosphere at a temperature T between 800 and 1000° C., for a time t between 6 and 36 hrs.

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