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    ELECTRODE HAVING ELECTRICALLY ACTIVATED MATRIX
    1.
    发明申请
    ELECTRODE HAVING ELECTRICALLY ACTIVATED MATRIX 审中-公开

    公开(公告)号：US20170179488A1

    公开(公告)日：2017-06-22

    申请号：US14977843

    申请日：2015-12-22

    Applicant: NISSAN NORTH AMERICA, INC.

    Inventor： XIAOGUANG HAO ,  KENZO OSHIHARA

    IPC: H01M4/62 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525

    CPC classification number: H01M4/62 ,  H01M4/13 ,  H01M4/362 ,  H01M4/386 ,  H01M4/387 ,  H01M4/587 ,  H01M10/0525 ,  H01M2220/20

    Abstract: Electrodes incorporate an electrically activated matrix into which active material is provided. The active material includes alloying particles, which, as used herein, are active catalyst particles that have a high lithium storage capacity resulting in large volume expansions during lithiation. The electrically activated matrix is activated during charging and discharging of the battery, and when activated, maintains the electrode structure and stability by expanding and contracting with the volume expansion and contraction of the alloying particles during lithiation and delithiation, respectively. The electrically activated matrix also reduces cracking and pulverization of the alloying particles, maintaining electrical conductivity between active materials, thereby maintaining battery energy density through the life of the battery.

    ELECTRODES WITH DIRECTIONALLY RESTRAINED ACTIVE MATERIALS AND METHODS OF RESTRAINT
    4.
    发明申请
    ELECTRODES WITH DIRECTIONALLY RESTRAINED ACTIVE MATERIALS AND METHODS OF RESTRAINT 审中-公开

    公开(公告)号：US20170179489A1

    公开(公告)日：2017-06-22

    申请号：US14977891

    申请日：2015-12-22

    Applicant: NISSAN NORTH AMERICA, INC.

    Inventor： KENZO OSHIHARA ,  XIAOGUANG HAO

    IPC: H01M4/62 ,  H01M4/134 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/04 ,  H01M4/74

    Abstract: A method of making an electrode for a lithium ion battery includes providing a restricting media having a main body with opposing planar surfaces and depositing alloying particles on the opposing planar surfaces to form a restrained active particle layer. The restricting media can be a magnetic, electrochemically inactive material with an affinity for the alloying particles. The restricting media restrains expansion of the alloying particles during lithiation to a respective side of the restricting media. Electrodes include a current collector and an electrode material layer adjacent the current collector including the restricting media, the alloying particles deposited on the restricting media to form a restrained active particle layer, and a carbon material in contact with the alloying particles

    ELECTRODE STRUCTURE HAVING ALTERNATING COMPOSITE LAYERS
    5.
    发明申请
    ELECTRODE STRUCTURE HAVING ALTERNATING COMPOSITE LAYERS 有权
    具有替代复合层的电极结构

    公开(公告)号：US20160211513A1

    公开(公告)日：2016-07-21

    申请号：US14597389

    申请日：2015-01-15

    Applicant: Nissan North America, Inc.

    Inventor： XIAOGUANG HAO ,  KENZO OSHIHARA

    IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587

    CPC classification number: H01M4/366 ,  H01M4/133 ,  H01M4/386 ,  H01M4/387 ,  H01M4/587 ,  H01M10/052 ,  H01M2220/20 ,  Y02E60/122

    Abstract: An electrode comprises a current collector and a multi-layer active material formed on the current collector. The multi-layer active material includes at least one active composite unit having a first layer consisting essentially of a first carbon material having electrochemical activity and a binder and a second layer formed on the first layer comprising a high energy density material. A top layer is formed on the active composite unit consisting essentially of a second carbon material having electrochemical activity and a binder. The electrode provides even current distribution and compensates for particle volume expansion.

    Abstract translation: 电极包括形成于集电体上的集电体和多层活性物质。 多层活性材料包括至少一种活性复合单元，其具有基本上由具有电化学活性的第一碳材料和粘合剂组成的第一层和在包含高能量密度材料的第一层上形成的第二层。 主要由具有电化学活性的第二碳材料和粘合剂组成的活性复合单元上形成顶层。 电极提供均匀的电流分布并补偿颗粒体积膨胀。

    ELECTRODE WITH MODIFIED CURRENT COLLECTOR STRUCTURE AND METHOD OF MAKING THE SAME
    6.
    发明申请
    ELECTRODE WITH MODIFIED CURRENT COLLECTOR STRUCTURE AND METHOD OF MAKING THE SAME 审中-公开

    公开(公告)号：US20170170483A1

    公开(公告)日：2017-06-15

    申请号：US14969508

    申请日：2015-12-15

    Applicant: NISSAN NORTH AMERICA, INC.

    Inventor： XIAOGUANG HAO

    IPC: H01M4/70 ,  H01M4/04 ,  H01M4/66

    CPC classification number: H01M4/70 ,  H01M4/045 ,  H01M4/134 ,  H01M4/661 ,  H01M10/0525

    Abstract: Electrodes having three dimensional current collectors provide stability to the electrode structure, improved contact between active material and the current collector, and improved charge transfer. An electrode includes a three dimensional current collector including a substantially planar base and spring-like structures extending from the substantially planar base in spaced relation along the substantially planar base. Each spring-like structure has an attachment end attached to the substantially planar base and a free distal end. Active material is layered on the three dimensional current collector, the active material filled between the spring-like structures. The active material comprises alloying particles having a high specific capacity, wherein the spring-like structures deflect as the alloying particles expand in volume due to lithiation and return to an initial position as the alloying particles contract due to delithiation.

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