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    INTERMEDIATE LAYERS FOR ELECTRODE FABRICATION
    3.
    发明申请
    INTERMEDIATE LAYERS FOR ELECTRODE FABRICATION 审中-公开

    公开(公告)号：US20190181489A1

    公开(公告)日：2019-06-13

    申请号：US16181133

    申请日：2018-11-05

    申请人： Amprius, Inc.

    发明人： William S. Delhagen ,  Rainer J. Fasching ,  Ghyrn E. Loveness ,  Song Han ,  Eugene M. Berdichevsky ,  Constantin Ionel Stefan ,  Yi Cui ,  Mark C. Platshon

    IPC分类号： H01M10/052 ,  H01M4/66 ,  H01M4/36 ,  H01M4/13 ,  H01M4/134

    摘要： Provided are novel electrodes for use in lithium ion batteries. An electrode includes one or more intermediate layers positioned between a substrate and an electrochemically active material. Intermediate layers may be made from chromium, titanium, tantalum, tungsten, nickel, molybdenum, lithium, as well as other materials and their combinations. An intermediate layer may protect the substrate, help to redistribute catalyst during deposition of the electrochemically active material, improve adhesion between the active material and substrate, and other purposes. In certain embodiments, an active material includes one or more high capacity active materials, such as silicon, tin, and germanium. These materials tend to swell during cycling and may loose mechanical and/or electrical connection to the substrate. A flexible intermediate layer may compensate for swelling and provide a robust adhesion interface. Provided also are novel methods of fabricating electrodes containing one or more intermediate layers.

    STRUCTURALLY CONTROLLED DEPOSITION OF SILICON ONTO NANOWIRES
    6.
    发明申请
    STRUCTURALLY CONTROLLED DEPOSITION OF SILICON ONTO NANOWIRES 有权
    结构控制硅的沉积物到纳米级

    公开(公告)号：US20150325852A1

    公开(公告)日：2015-11-12

    申请号：US14710103

    申请日：2015-05-12

    申请人： Amprius, Inc.

    发明人： Weijie Wang ,  Zuqin Liu ,  Song Han ,  Jonathan Bornstein ,  Constantin Ionel Stefan

    IPC分类号： H01M4/36 ,  H01M4/04 ,  H01M4/38 ,  H01M4/1395 ,  H01M4/134 ,  H01M10/0525

    CPC分类号： H01M4/386 ,  H01M4/0428 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/366 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027

    摘要： Provided herein are nanostructures for lithium ion battery electrodes and methods of fabrication. In some embodiments, a nanostructure template coated with a silicon coating is provided. The silicon coating may include a non-conformal, more porous layer and a conformal, denser layer on the non-conformal, more porous layer. In some embodiments, two different deposition processes, e.g., a PECVD layer to deposit the non-conformal layer and a thermal CVD process to deposit the conformal layer, are used. Anodes including the nanostructures have longer cycle lifetimes than anodes made using either a PECVD or thermal CVD method alone.

    摘要翻译： 本文提供了用于锂离子电池电极的纳米结构和制造方法。 在一些实施方案中，提供涂覆有硅涂层的纳米结构模板。 硅涂层可以在非保形的多孔层上包括非保形的，更多孔的层和共形，更致密的层。 在一些实施例中，使用两个不同的沉积工艺，例如沉积非保形层的PECVD层和沉积保形层的热CVD工艺。 包括纳米结构的阳极比仅使用PECVD或热CVD法制造的阳极具有更长的循环寿命。

    TEMPLATE ELECTRODE STRUCTURES FOR DEPOSITING ACTIVE MATERIALS
    7.
    发明申请
    TEMPLATE ELECTRODE STRUCTURES FOR DEPOSITING ACTIVE MATERIALS 有权
    用于沉积活性材料的模板电极结构

    公开(公告)号：US20130344383A1

    公开(公告)日：2013-12-26

    申请号：US13914491

    申请日：2013-06-10

    申请人： Amprius, Inc.

    发明人： Ghyrn E. Loveness ,  William S. DelHagen ,  Rainer Fasching ,  Song Han ,  Zuqin Liu

    IPC分类号： H01M4/75

    CPC分类号： H01M4/366 ,  H01M4/0428 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/386 ,  H01M4/58 ,  H01M4/587 ,  H01M4/66 ,  H01M4/661 ,  H01M4/667 ,  H01M4/75 ,  H01M10/0525 ,  Y02E60/122 ,  Y10T29/49108 ,  Y10T29/49115

    摘要： Provided are examples of electrochemically active electrode materials, electrodes using such materials, and methods of manufacturing such electrodes. Electrochemically active electrode materials may include a high surface area template containing a metal silicide and a layer of high capacity active material deposited over the template. The template may serve as a mechanical support for the active material and/or an electrical conductor between the active material and, for example, a substrate. Due to the high surface area of the template, even a thin layer of the active material can provide sufficient active material loading and corresponding battery capacity. As such, a thickness of the layer may be maintained below the fracture threshold of the active material used and preserve its structural integrity during battery cycling.

    摘要翻译： 提供了电化学活性电极材料的实例，使用这种材料的电极以及制造这种电极的方法。 电化学活性电极材料可以包括含有金属硅化物的高表面积模板和沉积在模板上的高容量活性材料层。 模板可以用作活性材料和/或活性材料和例如基底之间的电导体的机械支撑。 由于模板的高表面积，即使活性材料的薄层也能提供足够的活性材料负荷和相应的电池容量。 因此，该层的厚度可以保持低于所使用的活性材料的断裂阈值，并且在电池循环期间保持其结构完整性。

    HIGH CAPACITY BATTERY ELECTRODE STRUCTURES
    8.
    发明申请
    HIGH CAPACITY BATTERY ELECTRODE STRUCTURES 有权

    公开(公告)号：US20220149379A1

    公开(公告)日：2022-05-12

    申请号：US17493740

    申请日：2021-10-04

    申请人： Amprius, Inc.

    发明人： Zuqin Liu ,  Song Han ,  Ghyrn E. Loveness

    IPC分类号： H01M4/62

    摘要： Provided are battery electrode structures that maintain high mass loadings (i.e., large amounts per unit area) of high capacity active materials in the electrodes without deteriorating their cycling performance. These mass loading levels correspond to capacities per electrode unit area that are suitable for commercial electrodes even though the active materials are kept thin and generally below their fracture limits. A battery electrode structure may include multiple template layers. An initial template layer may include nanostructures attached to a substrate and have a controlled density. This initial layer may be formed using a controlled thickness source material layer provided, for example, on a substantially inert substrate. Additional one or more template layers are then formed over the initial layer resulting in a multilayer template structure with specific characteristics, such as a surface area, thickness, and porosity. The multilayer template structure is then coated with a high capacity active material.

    STABILIZED, PRELITHIATED SILICON OXIDE PARTICLES FOR LITHIUM ION BATTERY ANODES
    9.
    发明申请
    STABILIZED, PRELITHIATED SILICON OXIDE PARTICLES FOR LITHIUM ION BATTERY ANODES 有权

    公开(公告)号：US20220006079A1

    公开(公告)日：2022-01-06

    申请号：US17480010

    申请日：2021-09-20

    申请人： Amprius, Inc.

    发明人： Kai Yan ,  Hongduan Huang

    IPC分类号： H01M4/485 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/133 ,  H01M10/0525 ,  H01M4/1393 ,  H01M4/04 ,  H01M4/587 ,  H01M4/62 ,  H01M4/58

    摘要： Although silicon-oxide based particles have stable capacity and high cycling efficiency as anode active material, they are known to suffer significant capacity loss during the first battery cycles. The addition of lithium silicate may help to mitigate the initial capacity loss, but it has been difficult to produce such anodes. During battery manufacture cell components are exposed to water, and lithium silicate is water soluble. As lithium silicate dissolves, the pH of the water increases, which can etch silicon, degrading the anode active material. Such degradation can be mitigated by doping lithium silicate with multivalent elements or by converting some silicon to metal silicide before water processing. Doping of lithium silicate makes it less soluble in water. And metal silicide is not as easily etched as silicon. While retaining the excellent capacity and stability of silicon-oxide based material, these methods and the structures they produce have been shown to increase the effective energy density of batteries that employ such structures by offsetting capacity loss in the first cycles.

    Stabilized, prelithiated silicon oxide particles for lithium ion battery anodes
    10.
    发明授权
    Stabilized, prelithiated silicon oxide particles for lithium ion battery anodes 有权

    公开(公告)号：US11152613B2

    公开(公告)日：2021-10-19

    申请号：US16250635

    申请日：2019-01-17

    申请人： Amprius, Inc.

    发明人： Kai Yan ,  Hongduan Huang

    IPC分类号： H01M4/485 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/133 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/1393 ,  H01M4/04 ,  H01M4/587 ,  H01M4/62 ,  H01M4/58 ,  H01M4/02

    摘要： Although silicon-oxide based particles have stable capacity and high cycling efficiency as anode active material, they are known to suffer significant capacity loss during the first battery cycles. The addition of lithium silicate may help to mitigate the initial capacity loss, but it has been difficult to produce such anodes. During battery manufacture cell components are exposed to water, and lithium silicate is water soluble. As lithium silicate dissolves, the pH of the water increases, which can etch silicon, degrading the anode active material. Such degradation can be mitigated by doping lithium silicate with multivalent elements or by converting some silicon to metal silicide before water processing. Doping of lithium silicate makes it less soluble in water. And metal silicide is not as easily etched as silicon. While retaining the excellent capacity and stability of silicon-oxide based material, these methods and the structures they produce have been shown to increase the effective energy density of batteries that employ such structures by offsetting capacity loss in the first cycles.