Core-Shell Lithium Transition Metal Oxides
    4.
    发明申请
    Core-Shell Lithium Transition Metal Oxides 有权
    核壳锂跃迁金属氧化物

    公开(公告)号:US20120261610A1

    公开(公告)日:2012-10-18

    申请号:US13505595

    申请日:2010-10-19

    IPC分类号: H01M4/525

    摘要: A lithium transition metal oxide powder for use in a rechargeable battery is disclosed, where the surface of the primary particles of said powder is coated with a LiF layer, where this layer consists of a reaction product of a fluorine-containing polymer and the primary particle surface. The lithium of the LiF originates from the primary particles surface. Examples of the fluorine-containing polymer are either one of PVDF, PVDF-HFP or PTFE. Examples of the lithium transition metal oxide are either one of —LiCodMeO2, wherein M is either one of both of Mg and Ti, with e

    摘要翻译: 公开了一种用于可充电电池的锂过渡金属氧化物粉末,其中所述粉末的初级颗粒的表面涂覆有LiF层,其中该层由含氟聚合物和主要颗粒的反应产物 表面。 LiF的锂源自初级颗粒表面。 含氟聚合物的实例是PVDF,PVDF-HFP或PTFE之一。 锂过渡金属氧化物的实例是-LiCodMeO 2中的一种,其中M是Mg和Ti中的一种,e <0.02和d + e = 1; -Li1 + aM'1-aO2±bM1kSm,其中-0.03

    Alumina dry-coated cathode material precursors
    9.
    发明授权
    Alumina dry-coated cathode material precursors 有权
    氧化铝干涂阴极材料前体

    公开(公告)号:US09543581B2

    公开(公告)日:2017-01-10

    申请号:US13817324

    申请日:2011-08-04

    摘要: A particulate precursor compound for manufacturing an aluminum doped lithium transition metal (M)-oxide powder usable as an active positive electrode material in lithium-ion batteries includes a transition metal (M)-hydroxide or (M)-oxyhydroxide core and a non-amorphous aluminum oxide coating layer covering the core. By providing an aluminum dry-coating process where the particulate precursor core compound is mixed with alumina powder in one or more procedures, higher doping levels of aluminum compared to the known prior art may be achieved. The crystal structure of the alumina is maintained during the coating procedures and the core of each mixed transition metal precursor particle is surrounded by a coating layer containing crystalline alumina nano particles. The aluminum concentration in the particulate precursor decreases as the size of the core increases.

    摘要翻译: 用于制造可用作锂离子电池中的活性正极材料的铝掺杂锂过渡金属(M) - 氧化物粉末的颗粒前体化合物包括过渡金属(M) - 羟基氧化物或(M) - 羟基氧化物核心和非 - 无定形氧化铝覆层覆盖核心。 通过提供铝干法涂覆方法,其中颗粒前体核心化合物与氧化铝粉末以一种或多种方法混合,可以实现与已知现有技术相比较较高掺杂水平的铝。 在涂布过程中保持氧化铝的晶体结构,并且每个混合的过渡金属前体颗粒的芯被包含结晶氧化铝纳米颗粒的涂层包围。 颗粒前体中的铝浓度随着核心尺寸的增加而减小。