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352 条记录 (耗时 0.041 秒)

    Graphite or carbon particulates for the lithium ion battery anode
    34.
    发明授权
    Graphite or carbon particulates for the lithium ion battery anode 有权
    用于锂离子电池阳极的石墨或碳颗粒

    公开(公告)号：US09437344B2

    公开(公告)日：2016-09-06

    申请号：US12804413

    申请日：2010-07-22

    申请人： Aruna Zhamu ,  Jinjun Shi ,  Guorong Chen ,  Qing Fang ,  Bor Z. Jang ,  Ming C. Wang

    发明人： Aruna Zhamu ,  Jinjun Shi ,  Guorong Chen ,  Qing Fang ,  Bor Z. Jang ,  Ming C. Wang

    IPC分类号： B32B9/00 ,  H01B1/12 ,  C01B31/04 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525

    CPC分类号： H01B1/122 ,  C01B32/20 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  Y02T10/7011 ,  Y10T428/30

    摘要： This invention provides a graphite or graphite-carbon particulate for use as a lithium secondary battery anode material having a high-rate capability. The particulate is formed of a core carbon or graphite particle and a plurality of satellite carbon or graphite particles that are each separately bonded to the core particle wherein the core particle is spherical in shape, slightly elongate in shape with a major axis-to-minor axis ratio less than 2, or fibril in shape, and wherein the satellite particles are disc-, platelet-, or flake-like particles each containing a graphite crystallite with a crystallographic c-axis dimension Lc and a lateral dimension. Preferably, Lc is less than 100 nm and the flake/platelet lateral dimension is less than 1 μm. The core particle may be selected from natural graphite, artificial graphite, spherical graphite, graphitic coke, meso-carbon micro-bead, soft carbon, hard carbon, graphitic fibril, carbon nano-fiber, carbon fiber, or graphite fiber. Preferably, the flat-shaped particles are randomly oriented with respect to one another.

    摘要翻译： 本发明提供一种用作具有高速率能力的锂二次电池负极材料的石墨或石墨 - 碳颗粒。 颗粒由芯碳或石墨颗粒和多个卫星碳或石墨颗粒形成，每个卫星碳或石墨颗粒分别与核心颗粒结合，其中核心颗粒是球形的，具有略长的形状，具有长轴对次要的 轴比小于2，或原纤维形状，并且其中卫星颗粒是盘状，片状或片状颗粒，每个颗粒含有具有晶体c轴尺寸Lc和横向尺寸的石墨微晶。 优选地，Lc小于100nm，片/横板尺寸小于1μm。 核心颗粒可以选自天然石墨，人造石墨，球形石墨，石墨焦炭，内消旋碳微珠，软碳，硬碳，石墨原纤，碳纳米纤维，碳纤维或石墨纤维。 优选地，扁平形颗粒相对于彼此是随机取向的。

    Lithium-ion cell having a high-capacity anode and a high-capacity cathode
    37.
    发明申请
    Lithium-ion cell having a high-capacity anode and a high-capacity cathode 有权
    具有高容量阳极和大容量阴极的锂离子电池

    公开(公告)号：US20130224603A1

    公开(公告)日：2013-08-29

    申请号：US13385561

    申请日：2012-02-27

    申请人： Guorong Chen ,  Aruna Zhamu ,  Xiging Wang ,  Bor Z. Jang ,  Yanbo Wang ,  Qing Fang

    发明人： Guorong Chen ,  Aruna Zhamu ,  Xiging Wang ,  Bor Z. Jang ,  Yanbo Wang ,  Qing Fang

    IPC分类号： H01M4/583 ,  H01M10/00 ,  H01M4/44 ,  H01M4/46 ,  H01M4/40 ,  H01M4/505 ,  H01M4/525 ,  H01M4/485 ,  H01M4/38 ,  H01M4/42 ,  B82Y30/00

    CPC分类号： H01G11/50 ,  B82Y30/00 ,  H01M4/386 ,  H01M4/387 ,  H01M4/483 ,  H01M4/485 ,  H01M4/587 ,  H01M4/625 ,  Y02E60/13

    摘要： A lithium-ion cell comprising: (A) a cathode comprising graphene as the cathode active material having a surface area to capture and store lithium thereon and wherein said graphene cathode is meso-porous having a specific surface area greater than 100 m2/g; (B) an anode comprising an anode active material for inserting and extracting lithium, wherein the anode active material is mixed with a conductive additive and/or a resin binder to form a porous electrode structure, or coated onto a current collector in a coating or thin film form; (C) a porous separator disposed between the anode and the cathode; (D) a lithium-containing electrolyte in physical contact with the two electrodes; and (E) a lithium source disposed in at least one of the two electrodes when the cell is made. This new Li-ion cell exhibits an unprecedentedly high energy density.

    摘要翻译： 一种锂离子电池，包括：（A）包含石墨烯的阴极，所述阴极活性材料具有在其上捕获和储存锂的表面积，并且其中所述石墨烯阴极是比表面积大于100m 2 / g的中等孔; （B）包括用于插入和提取锂的负极活性材料的阳极，其中所述负极活性材料与导电添加剂和/或树脂粘合剂混合以形成多孔电极结构，或涂覆在涂层中的集电体上，或 薄膜形式; （C）设置在阳极和阴极之间的多孔隔板; （D）与两个电极物理接触的含锂电解质; 和（E）当制造电池时，设置在两个电极中的至少一个电极中的锂源。 这种新的锂离子电池表现出前所未有的高能量密度。

    Graphene-enhanced anode particulates for lithium ion batteries
    38.
    发明申请
    Graphene-enhanced anode particulates for lithium ion batteries 有权
    用于锂离子电池的石墨烯增强阳极颗粒

    公开(公告)号：US20120064409A1

    公开(公告)日：2012-03-15

    申请号：US12807635

    申请日：2010-09-10

    申请人： Aruna Zhamu ,  Jinjun Shi ,  Guorong Chen ,  Qing Fang ,  Bor Z. Jang

    发明人： Aruna Zhamu ,  Jinjun Shi ,  Guorong Chen ,  Qing Fang ,  Bor Z. Jang

    IPC分类号： H01M4/583 ,  H01B1/04 ,  H01M4/505 ,  H01M4/525 ,  H01M4/485 ,  H01M4/50

    CPC分类号： H01M4/133 ,  B82Y30/00 ,  H01B1/04 ,  H01M4/0471 ,  H01M4/13 ,  H01M4/131 ,  H01M4/139 ,  H01M4/386 ,  H01M4/387 ,  H01M4/48 ,  H01M4/483 ,  H01M4/523 ,  H01M4/5825 ,  H01M4/587 ,  H01M4/625 ,  H01M10/0525 ,  Y02E60/122

    摘要： A nano graphene-enhanced particulate for use as a lithium-ion battery anode active material, wherein the particulate is formed of a single sheet of graphene or a plurality of graphene sheets and a plurality of fine anode active material particles with a size smaller than 10 μm. The graphene sheets and the particles are mutually bonded or agglomerated into the particulate with at least a graphene sheet embracing the anode active material particles. The amount of graphene is at least 0.01% by weight and the amount of the anode active material is at least 0.1% by weight, all based on the total weight of the particulate. A lithium-ion battery having an anode containing these graphene-enhanced particulates exhibits a stable charge and discharge cycling response, a high specific capacity per unit mass, a high first-cycle efficiency, a high capacity per electrode volume, and a long cycle life.

    摘要翻译： 一种用作锂离子电池负极活性材料的纳米石墨烯增强颗粒，其中颗粒由单片石墨烯或多个石墨烯片和多个尺寸小于10的细阳极活性材料颗粒形成 μm。 石墨烯片和颗粒与至少包含阳极活性物质颗粒的石墨烯片相互结合或聚集成颗粒。 石墨烯的量为至少0.01重量％，阳极活性物质的量为至少0.1重量％，均基于颗粒的总重量。 具有包含这些石墨烯增强颗粒的阳极的锂离子电池表现出稳定的充放电循环响应，每单位质量的高比容量，高的第一循环效率，每电极体积的高容量和长的循环寿命 。

    Graphite or carbon particulates for the lithium ion battery anode
    39.
    发明申请
    Graphite or carbon particulates for the lithium ion battery anode 有权
    用于锂离子电池阳极的石墨或碳颗粒

    公开(公告)号：US20120021294A1

    公开(公告)日：2012-01-26

    申请号：US12804413

    申请日：2010-07-22

    申请人： Aruna Zhamu ,  Jinjun Shi ,  Guorong Chen ,  Qing Fang ,  Bor Z. Jang ,  Ming C. Wang

    发明人： Aruna Zhamu ,  Jinjun Shi ,  Guorong Chen ,  Qing Fang ,  Bor Z. Jang ,  Ming C. Wang

    IPC分类号： H01M4/58 ,  H01B1/04 ,  C01B31/04

    CPC分类号： H01B1/122 ,  C01B32/20 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  Y02T10/7011 ,  Y10T428/30

    摘要： This invention provides a graphite or graphite-carbon particulate for use as a lithium secondary battery anode material having a high-rate capability. The particulate is formed of a core carbon or graphite particle and a plurality of satellite carbon or graphite particles that are each separately bonded to the core particle wherein the core particle is spherical in shape, slightly elongate in shape with a major axis-to-minor axis ratio less than 2, or fibril in shape, and wherein the satellite particles are disc-, platelet-, or flake-like particles each containing a graphite crystallite with a crystallographic c-axis dimension Lc and a lateral dimension. Preferably, Lc is less than 100 nm and the flake/platelet lateral dimension is less than 1 μm. The core particle may be selected from natural graphite, artificial graphite, spherical graphite, graphitic coke, meso-carbon micro-bead, soft carbon, hard carbon, graphitic fibril, carbon nano-fiber, carbon fiber, or graphite fiber. Preferably, the flat-shaped particles are randomly oriented with respect to one another.

    摘要翻译： 本发明提供一种用作具有高速率能力的锂二次电池负极材料的石墨或石墨 - 碳颗粒。 颗粒由芯碳或石墨颗粒和多个卫星碳或石墨颗粒形成，每个卫星碳或石墨颗粒分别与核心颗粒结合，其中核心颗粒是球形的，具有略长的形状，具有长轴对次要的 轴比小于2，或原纤维形状，并且其中卫星颗粒是盘状，片状或片状颗粒，每个颗粒含有具有晶体c轴尺寸Lc和横向尺寸的石墨微晶。 优选地，Lc小于100nm，片/横板尺寸小于1μm。 核心颗粒可以选自天然石墨，人造石墨，球形石墨，石墨焦炭，内消旋碳微珠，软碳，硬碳，石墨原纤，碳纳米纤维，碳纤维或石墨纤维。 优选地，扁平形颗粒相对于彼此是随机取向的。