中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

40 records (took 0.017 seconds)

    Bimodal Lithium Transition Metal Based Oxide Powder for Use in a Rechargeable Battery
    6.
    发明申请
    Bimodal Lithium Transition Metal Based Oxide Powder for Use in a Rechargeable Battery 审中-公开
    用于充电电池的双峰型锂转移金属氧化物粉末

    公开(公告)号：US20150311512A1

    公开(公告)日：2015-10-29

    申请号：US14650974

    申请日：2013-11-28

    Applicant: UMICORE ,  UMICORE KOREA LTD.

    Inventor： Jens PAULSEN ,  Hye Yun YANG

    IPC: H01M4/36 ,  H01M4/54 ,  H01M4/525 ,  H01M4/485 ,  H01M4/505

    CPC classification number: H01M4/366 ,  C01G51/42 ,  C01G53/44 ,  C01P2002/60 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/364 ,  H01M4/48 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/54 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

    Abstract: A bimodal lithium transition metal oxide based powder for a rechargeable battery, comprising: a first lithium transition metal oxide based powder, either comprising a material having a layered crystal structure consisting of the elements Li, a metal M and oxygen, wherein the Li content is stoichiometrically controlled, wherein the metal M has the formula M=Co1-a M′a, with 0≦a≦0.05, and wherein M′ is either one or more metals of the group consisting of Al, Ga and B; or comprising a core material and a surface layer, the core having a layered crystal structure consisting of the elements Li, a metal M and oxygen, wherein the Li content is stoichiometrically controlled, wherein the metal M has the formula M=Co1-a M′a, with 0≦a≦0.05, wherein M′ is either one or more metals of the group consisting of Al, Ga and B; and the surface layer consisting of a mixture of the elements of the core material and inorganic N-based oxides, wherein N is either one or more metals of the group consisting of Mg, Ti, Fe, Cu, Ca, Ba, Y, Sn, Sb, Na, Zn, Zr, Si, Nb, Mo, Ru, Rh, Pd, Ag, Cd, Sc, Ce, Pr, Nd, Gd, Dy, and Er; the first powder having an average particle size (D50) of at least 15 μm; and a second lithium transition metal oxide based powder having the formula Li1+bN′1−bO2, wherein 0.10≦b≦0.25, and N′═NixMnyCozAd, wherein 0.10≦x≦0.60, 0.30≦y≦0.80, 0.05≦z≦0.20 and 0≦d≦0.10, A being a dopant, the second powder having an average particle size (D50) of less than 5 μm, and preferably less than 2 μm.

    Abstract translation: 一种用于可再充电电池的双峰型锂过渡金属氧化物基粉末，其包含：第一锂过渡金属氧化物基粉末，其包含具有由元素Li，金属M和氧构成的层状晶体结构的材料，其中Li含量为 化学计量控制，其中金属M具有式M = Co1-a M'a，其中0＆lt; n1E; a＆nlE; 0.05，并且其中M'是Al，Ga和B组中的一种或多种金属; 或包含芯材和表面层，所述芯具有由元素Li，金属M和氧组成的层状晶体结构，其中Li含量是化学计量控制的，其中金属M具有式M = Co1-a M 'a，具有0和nlE; a＆nlE; 0.05，其中M'是Al，Ga和B组中的一种或多种金属; 由核心材料和无机N-氧化物的混合物组成的表面层，其中N为Mg，Ti，Fe，Cu，Ca，Ba，Y，Sn中的一种或多种金属 ，Sb，Na，Zn，Zr，Si，Nb，Mo，Ru，Rh，Pd，Ag，Cd，Sc，Ce，Pr，Nd，Gd，Dy和Er; 平均粒径（D50）为15μm以上的第一粉末; 和具有式Li1 + bN'1-bO2的第二种锂过渡金属氧化物基粉末，其中0.10和nlE; b＆nlE; 0.25和N'= NixMnyCozAd，其中0.10和nlE; x和nlE; 0.60,0.30和nlE; y＆nlE; 0.80,0.05 ＆nlE; z＆nlE; 0.20和0＆nlE; d＆nlE; 0.10，A是掺杂剂，第二粉末的平均粒径（D50）小于5μm，优选小于2μm。

    METHODS FOR PREPARING POSITIVE ELECTRODE MATERIAL FOR RECHARGEABLE LITHIUM ION BATTERIES
    7.
    发明申请
    METHODS FOR PREPARING POSITIVE ELECTRODE MATERIAL FOR RECHARGEABLE LITHIUM ION BATTERIES 有权

    公开(公告)号：US20210143423A1

    公开(公告)日：2021-05-13

    申请号：US17041022

    申请日：2019-03-13

    Applicant: UMICORE ,  UMICORE KOREA LTD.

    Inventor： Jens PAULSEN ,  Shinichi KUMAKURA ,  TaeHyeon YANG ,  Dae-Hyun KIM ,  HyeJeong YANG

    IPC: H01M4/525 ,  H01M4/505 ,  H01M4/04

    Abstract: A method for preparing a powderous positive electrode material comprising single crystal monolithic particles and having a general formula Li1+a((Niz(Ni1/2Mn1/2)yCox)1-k Ak)1-aO2, wherein A is a dopant, −0.03≤a≤0.06, 0.05≤x≤0.35, 0.10≤z≤0.95, x+y+z=1 and k≤0.05 is described. The method comprises providing a mixture comprising a Ni- and Co-bearing precursor and a Li bearing precursor, subjecting the mixture to a multiple step sintering process whereby in the final sintering step a sintered lithiated intermediate material is obtained comprising agglomerated primary particles having a primary particle size distribution with a D50 between 2.0 and 8.0 μm, subjecting the lithiated intermediate material to a wet ball milling step to deagglomerate the agglomerated primary particles and obtain a slurry comprising deagglomerated primary particles, separating the deagglomerated primary particles from the slurry, and heat treating the deagglomerated primary particles at a temperature between 300° C. and at least 20° C. below the temperature in the final sintering step.

Patent Agency Ranking