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    TECHNIQUES FOR CHARGING AND/OR DISCHARGING A BATTERY USING FREQUENCY MODULATION
    35.
    发明申请
    TECHNIQUES FOR CHARGING AND/OR DISCHARGING A BATTERY USING FREQUENCY MODULATION 有权

    公开(公告)号：US20210119489A1

    公开(公告)日：2021-04-22

    申请号：US16995689

    申请日：2020-08-17

    Applicant: Massachusetts Institute of Technology

    Inventor： Yet-Ming Chiang ,  Bohua Wen

    IPC: H02J50/20 ,  H01M10/44

    Abstract: Described herein are techniques that increase the charging and/or discharging rate of a rechargeable battery, at least in part, by using frequency modulated (FM) signals having a frequency in the megahertz (MHz) frequency range. In some embodiments, the MHz frequency range may include any frequency between 0.1 MHz and 1 gigahertz (GHz). In some embodiments, a battery charger described herein may be configured to generate and transmit, to a battery, an FM signal modulated over a frequency range during a period of time, the FM signal having a frequency of at least 0.5 MHz during at least a first portion of the period of time. In some embodiments, a method described herein includes transmitting an FM signal modulated over a frequency range during a period of time and having a frequency of at least 0.5 MHz during at least a first portion of the period of time to a battery.

    CONTROLLED POROSITY IN ELECTRODES
    39.
    发明申请
    CONTROLLED POROSITY IN ELECTRODES 审中-公开
    电极中的控制孔隙度

    公开(公告)号：US20150364753A1

    公开(公告)日：2015-12-17

    申请号：US14716501

    申请日：2015-05-19

    Applicant: Massachusetts Institute of Technology ,  The Regents of the University of Michigan ,  The Regents of the University of California

    Inventor： Yet-Ming Chiang ,  Chang-Jun Bae ,  John William Halloran ,  Qiang Fu ,  Antoni P. Tomsia ,  Can K. Erdonmez

    IPC: H01M4/139 ,  H01M10/0525 ,  H01M4/13

    CPC classification number: H01M4/139 ,  H01M4/0411 ,  H01M4/0471 ,  H01M4/13 ,  H01M4/1391 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T29/4911

    Abstract: Porous electrodes in which the porosity has a low tortuosity are generally provided. In some embodiments, the porous electrodes can be designed to be filled with electrolyte and used in batteries, and can include low tortuosity in the primary direction of ion transport during charge and discharge of the battery. In some embodiments, the electrodes can have a high volume fraction of electrode active material (i.e., low porosity). The attributes outlined above can allow the electrodes to be fabricated with a higher energy density, higher capacity per unit area of electrode (mAh/cm2), and greater thickness than comparable electrodes while still providing high utilization of the active material in the battery during use. Accordingly, the electrodes can be used to produce batteries with high energy densities, high power, or both compared to batteries using electrodes of conventional design with relatively highly tortuous pores.

    Abstract translation: 通常提供多孔电极，其中孔隙度具有低弯曲度。 在一些实施例中，多孔电极可被设计为填充电解质并用于电池中，并且可以包括在电池充电和放电期间离子传输的主要方向上的低弯曲度。 在一些实施例中，电极可以具有高体积分数的电极活性材料（即，低孔隙率）。 上述属性可以允许电极以比同类电极更高的能量密度，每单位面积电极的容量（mAh / cm 2）和更大的厚度制造，同时仍然在使用期间提供电池中活性材料的高利用率 。 因此，与使用具有相对高曲率孔的常规设计的电极的电池相比，电极可用于生产具有高能量密度，高功率或两者的电池。

    HIGH ENERGY DENSITY REDOX FLOW DEVICE
    40.
    发明申请
    HIGH ENERGY DENSITY REDOX FLOW DEVICE 有权
    高能量密度回流流量装置

    公开(公告)号：US20130344367A1

    公开(公告)日：2013-12-26

    申请号：US13975474

    申请日：2013-08-26

    Applicant: Massachusetts Institute of Technology

    Inventor： Yet-Ming Chiang ,  W. Craig Carter ,  Bryan Y. Ho ,  Mihai Duduta ,  Pimpa Limthongkul

    IPC: H01M8/18 ,  H01M8/20

    CPC classification number: H01M8/188 ,  B60L11/1875 ,  B60L11/1898 ,  H01M8/20 ,  Y02E60/528 ,  Y02T10/705 ,  Y02T90/34

    Abstract: Redox flow devices are described in which at least one of the positive electrode or negative electrode-active materials is a semi-solid or is a condensed ion-storing electroactive material, and in which at least one of the electrode-active materials is transported to and from an assembly at which the electrochemical reaction occurs, producing electrical energy. The electronic conductivity of the semi-solid is increased by the addition of conductive particles to suspensions and/or via the surface modification of the solid in semi-solids (e.g., by coating the solid with a more electron conductive coating material to increase the power of the device). High energy density and high power redox flow devices are disclosed. The redox flow devices described herein can also include one or more inventive design features. In addition, inventive chemistries for use in redox flow devices are also described.

    Abstract translation: 描述了氧化还原流动装置，其中正极或负极活性材料中的至少一个是半固体或是冷凝离子存储电活性材料，并且其中至少一个电极活性材料被输送到 并且从发生电化学反应的组件产生电能。 半固体的电子导电性通过向悬浮液中添加导电颗粒和/或通过半固体中的固体的表面改性（例如，通过用更多的电子传导涂层材料涂覆固体以增加功率而增加） 的设备）。 公开了高能量密度和高功率氧化还原流量装置。 本文描述的氧化还原流动装置还可以包括一个或多个本发明的设计特征。 此外，还描述了用于氧化还原流动装置的发明化学物质。

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