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    Positive electrode active materials for secondary batteries and methods of preparing same
    1.
    发明授权
    Positive electrode active materials for secondary batteries and methods of preparing same 有权
    二次电池用正极活性物质及其制备方法

    公开(公告)号：US06878490B2

    公开(公告)日：2005-04-12

    申请号：US10040047

    申请日：2001-10-29

    申请人： Yuan Gao ,  Marina Yakovleva ,  Michael E. Leonowicz ,  Prakash Palepu ,  John F. Engel

    发明人： Yuan Gao ,  Marina Yakovleva ,  Michael E. Leonowicz ,  Prakash Palepu ,  John F. Engel

    IPC分类号： C01G23/00 ,  C01G51/00 ,  C01G53/00 ,  H01M4/36 ,  H01M4/48 ,  H01M4/485 ,  H01M4/50 ,  H01M4/505 ,  H01M4/52 ,  H01M4/525 ,  H01M4/58 ,  C01G43/04 ,  C01G49/04 ,  C01G51/04

    CPC分类号： H01M4/525 ,  C01G23/005 ,  C01G53/42 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2006/12 ,  C01P2006/80 ,  H01M4/364 ,  H01M4/485 ,  H01M4/505 ,  H01M4/5825

    摘要： The present invention is a positive electrode active material that can be used in secondary lithium and lithium-ion batteries to provide the power capability, i.e., the ability to deliver or retake energy in short periods of time, desired for large power applications such as power tools, electric bikes and hybrid electric vehicles. The positive electrode active material of the invention includes at least one electron conducting compound of the formula LiM1x−y{A}yOz and at least one electron insulating and lithium ion conducting lithium metal oxide, wherein M1 is a transition metal, {A} is represented by the formula ΣwiBi wherein Bi is an element other than M1 used to replace the transition metal M1 and wi is the fractional amount of element Bi in the total dopant combination such that Σwi=1; Bi is a cation in LiM1x−y{A}yOz; 0.95≦x≦2.10; 0≦y≦x/2; and 1.90≦z≦4.20. Preferably, the lithium metal oxide is LiAlO2 or Li2M2O3 wherein M2 is at least one tetravalent metal selected from the group consisting of Ti, Zr, Sn, Mn, Mo, Si, Ge, Hf, Ru and Te. The present invention also includes methods of making this positive electrode active material.

    摘要翻译： 本发明是一种正极活性物质，可用于二次锂离子电池和锂离子电池，以提供电力能力，即在短时间内传递或重新获取能量的能力，对于诸如电力的大功率应用而言是理想的 工具，电动自行车和混合动力电动汽车。 本发明的正极活性物质包括至少一种式LiM 1 y {A} y O z的电子导电化合物和至少一种电子绝缘和锂离子导电的锂金属氧化物，其中M 1是过渡金属 ，{A}由公式SigmawiBi表示，其中Bi是用于替代过渡金属M 1的除了M 1之外的元素，w i是总掺杂剂组合中元素Bi的分数，使得Sigmawi = 1 ; Bi是LiM 1 x-y {A} yOz中的阳离子; 0.95 <= x <= 2.10; 0 <= y <= x / 2; 和1.90 <= z <= 4.20。 优选地，锂金属氧化物是LiAlO 2或Li 2 M 2 O 3，其中M 2是选自Ti，Zr，Sn，Mn，Mo，Si，Ge，Hf，Ru和Te中的至少一种四价金属 。 本发明还包括制造该正极活性物质的方法。

    Lithium cobalt oxides and methods of making same
    4.
    发明授权
    Lithium cobalt oxides and methods of making same 失效
    锂钴氧化物及其制造方法

    公开(公告)号：US06579475B2

    公开(公告)日：2003-06-17

    申请号：US09731949

    申请日：2000-12-07

    申请人： Yuan Gao ,  Marina Yakovleva ,  John L. Burba, III ,  John F. Engel

    发明人： Yuan Gao ,  Marina Yakovleva ,  John L. Burba, III ,  John F. Engel

    IPC分类号： H01B108

    CPC分类号： C01G51/42 ,  C01P2002/20 ,  C01P2002/52 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2006/40 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021

    摘要： The present invention includes lithium cobalt oxides having hexagonal layered crystal structures and methods of making same. The lithium cobalt oxides of the invention have the formula LiwCo1−xAxO2+y wherein 0.96≦w≦1.05, 0≦x≦0.05, −0.02≦y≦0.02 and A is one or more dopants. The lithium cobalt oxides of the invention preferably have a position within the principal component space defined by the relationship axi+byi≦c, wherein xi={right arrow over (S)}i&Circlesolid;{right arrow over (P)}c1; yi={right arrow over (S)}i&Circlesolid;{right arrow over (P)}c2; the vector {right arrow over (S)}i is the x-ray spectrum for the LiwCo1−xAxO2+y compound; the vectors {right arrow over (P)}c1 and {right arrow over (P)}c2 defining the principal component space are determined by measuring the x-ray powder diffraction values {right arrow over (S)}i between 15° and 120° using a 0.02° step size and CuK&agr; rays for a large sample set of lithium cobalt oxides and using the regression of {right arrow over (S)}i of the sample set against the capacity fade after 50 cycles of a lithium coin cell that includes a lithium negative electrode and the lithium cobalt oxide as the positive electrode material and that is cycled between 3.0 and 4.3V at a constant current of C/3 during both charge and discharge cycles; and the values a, b and c are determined by using only the xi and yi values for LiwCo1−xAxO2+y compounds in the sample set that have a capacity fade after 50 cycles of less than or equal to 15%.

    摘要翻译： 本发明包括具有六方晶系结构的锂钴氧化物及其制造方法。 本发明的锂钴氧化物具有式LiwCo1-xAxO2 + y，其中0.96 <= w <= 1.05,0 <= x <= 0.05,0.02 <= y <0.02，A是一种或多种掺杂剂。 本发明的锂钴氧化物优选具有由关系axi + byi <= c定义的主要成分空间内的位置，其中xi = {向右箭头（Si＆Circlef; {向右箭头（Pc1; yi = {向右箭头 （Si＆Circlef; {向右箭头（Pc2;向量{向右箭头（Si是LiwCo1-xAxO2 + y化合物的x射线光谱）;向量（向右箭头（Pc1和{向右箭头（Pc2定义 通过测量x射线粉末衍射值（右箭头（在15°和120°之间的Si，使用0.02°步长的Si和用于大型锂钴氧化物的样品组的CuKalpha射线）并使用{ 向右箭头（相对于包含锂负极和锂钴氧化物作为正极材料的锂电池的循环50次循环后的容量褪色，并且以恒定电流在3.0和4.3V之间循环的样品组的Si 在充电和放电期间的C / 3 循环; 并且通过仅使用少于或等于15％的50个循环之后具有容量衰减的样品组中的LiwCo1-xAxO2 + y化合物的xi和yi值来确定值a，b和c。

    Lithium metal dispersion in electrodes
    8.
    发明申请
    Lithium metal dispersion in electrodes 审中-公开
    电极中的锂金属分散体

    公开(公告)号：US20050130043A1

    公开(公告)日：2005-06-16

    申请号：US10900715

    申请日：2004-07-28

    申请人： Yuan Gao ,  Marina Yakovleva ,  John Engel ,  Christine Jarvis ,  Michael Lain

    发明人： Yuan Gao ,  Marina Yakovleva ,  John Engel ,  Christine Jarvis ,  Michael Lain

    IPC分类号： H01M4/13 ,  H01M4/133 ,  H01M4/134 ,  H01M4/139 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/40 ,  H01M4/58 ,  H01M4/587 ,  H01M6/00 ,  H01M10/0525 ,  H01M10/36 ,  H01M4/04

    摘要： Electrodes, such as anodes and cathodes, can include a host material that is prelithiated or undergoes lithiation upon electrolyte introduction into a battery. Lithiation of the host material can occur by the agitation of lithium metal and a host material, the agitation of a lithium metal powder and a host material at a temperature greater than room temperature, the application of pressure to a lithium metal and host material mixture, contact of the host material with molten lithium metal, the lamination of lithium foil or lithium mesh onto an electrode containing the host material, or by lamination of lithium metal or mesh onto an electrode at elevated temperatures.

    摘要翻译： 诸如阳极​​和阴极的电极可以包括在电解质引入电池中时被预锂化或经历锂化的主体材料。 主体材料的锂化可以通过锂金属和主体材料的搅拌，在大于室温的温度下搅拌锂金属粉末和主体材料，向锂金属和主体材料混合物施加压力， 主体材料与熔融锂金属的接触，将锂箔或锂网叠层在含有主体材料的电极上，或者通过在升高的温度下将锂金属或网状物层压到电极上。

    FINELY DEPOSITED LITHIUM METAL POWDER
    10.
    发明申请
    FINELY DEPOSITED LITHIUM METAL POWDER 审中-公开
    精细沉积的锂金属粉末

    公开(公告)号：US20110135810A1

    公开(公告)日：2011-06-09

    申请号：US12954988

    申请日：2010-11-29

    申请人： Marina Yakovleva ,  Yuan Gao ,  Yangxing Li ,  Kenneth Brian Fitch

    发明人： Marina Yakovleva ,  Yuan Gao ,  Yangxing Li ,  Kenneth Brian Fitch

    IPC分类号： B05D5/12 ,  H01M4/86 ,  B44C1/17

    CPC分类号： H01M4/0416 ,  C23C10/30 ,  C23C26/00 ,  H01M4/0402 ,  H01M4/043 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1395

    摘要： The present invention provides a method of finely depositing lithium metal powder or thin lithium foil onto a substrate while avoiding the use of a solvent. The method includes depositing lithium metal powder or thin lithium foil onto a carrier, contacting the carrier with a substrate having a higher affinity for the lithium metal powder as compared to the affinity of the carrier for the lithium metal powder, subjecting the substrate while in contact with the carrier to conditions sufficient to transfer the lithium metal powder or lithium foil deposited on the carrier to the substrate, and separating the carrier and substrate so as to maintain the lithium metal powder or lithium metal foil, deposited on the substrate.

    摘要翻译： 本发明提供了一种在避免使用溶剂的同时将锂金属粉末或薄的锂箔细微沉积在基材上的方法。 该方法包括将锂金属粉末或薄的锂箔沉积到载体上，与载体对锂金属粉末的亲和力相比，与载体对于锂金属粉末的亲和力相比，使载体接触，同时接触基底 载体的条件足以将沉积在载体上的锂金属粉末或锂箔转移到基底上，并分离载体和基底，以保持沉积在基底上的锂金属粉末或锂金属箔。