APPLICATION OF PRESSURE TO ELECTROCHEMICAL DEVICES INCLUDING DEFORMABLE SOLIDS, AND RELATED SYSTEMS

    公开(公告)号:US20230118071A1

    公开(公告)日:2023-04-20

    申请号:US17911080

    申请日:2021-03-12

    摘要: Systems and methods for applying pressure to electrochemical devices are generally described. In some aspects, batteries including an electrochemical cell and an associated deformable solid are provided. The deformable solid may be configured to apply an anisotropic force (e.g., during cycling), which may improve the performance and/or durability of the electrochemical cell. In some instances (for example, in certain cases where the deformable solid includes a piezoelectric array and/or an electroactive polymer), the battery may be able to make dynamic adjustments to a pressure experienced by the electrochemical cell (e.g., based on signals from a pressure sensor). The systems and methods described herein can, in some instances, provide for relatively uniform pressure distributions across an electrochemical cell and/or throughout a stack of multiple electrochemical cells.

    Methods of forming electrode structures

    公开(公告)号:US11245103B2

    公开(公告)日:2022-02-08

    申请号:US16369027

    申请日:2019-03-29

    摘要: An electrode structure and its method of manufacture are disclosed. The disclosed electrode structures may be manufactured by depositing a first release layer on a first carrier substrate. A first protective layer may be deposited on a surface of the first release layer and a first electroactive material layer may then be deposited on the first protective layer. Subsequently, the first carrier substrate may be delaminated from the first release layer. The first release layer may then be removed from the first protective layer by dissolution in an electrolyte. The first protective layer may have a low mean peak to valley surface roughness and/or may be thin. In some embodiments, an interface between the first protective layer and the first electroactive material layer has a low mean peak to valley surface roughness. In some embodiments, a thickness of the first protective layer is greater than a mean peak to valley roughness of the first release layer. In some embodiments, an adhesive strength between the first release layer and the first protective layer is greater than an adhesive strength between the first release layer and the first carrier substrate.

    PROTECTIVE LAYERS FOR ELECTROCHEMICAL CELLS
    10.
    发明申请
    PROTECTIVE LAYERS FOR ELECTROCHEMICAL CELLS 审中-公开
    电化学细胞保护层

    公开(公告)号:US20160344067A1

    公开(公告)日:2016-11-24

    申请号:US15160191

    申请日:2016-05-20

    摘要: Articles and methods including layers for protection of electrodes in electrochemical cells are provided. As described herein, a layer, such as a protective layer for an electrode, may comprise a plurality of particles (e.g., crystalline inorganic particles, amorphous inorganic particles). In some embodiments, at least a portion of the plurality of particles (e.g., inorganic particles) are fused to one another. For instance, in some embodiments, the layer may be formed by aerosol deposition or another suitable process that involves subjecting the particles to a relatively high velocity such that fusion of particles occurs during deposition. In some embodiments, the layer (e.g., the layer comprising a plurality of particles) is an ion-conducting layer.

    摘要翻译: 提供了包括用于保护电化学电池中的电极的层的制品和方法。 如本文所述,诸如用于电极的保护层的层可以包括多个颗粒(例如,结晶无机颗粒,无定形无机颗粒)。 在一些实施方案中,多个颗粒的至少一部分(例如无机颗粒)彼此熔合。 例如,在一些实施方案中,该层可以通过气溶胶沉积或其它合适的方法形成,其包括使颗粒经历相对较高的速度,使得在沉积期间发生颗粒的熔化。 在一些实施例中,层(例如,包含多个颗粒的层)是离子传导层。