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    Composite separators and redox flow batteries based on porous separators
    15.
    发明授权
    Composite separators and redox flow batteries based on porous separators 有权
    基于多孔分离器的复合分离器和氧化还原液流电池

    公开(公告)号：US09236620B2

    公开(公告)日：2016-01-12

    申请号：US13668604

    申请日：2012-11-05

    Applicant: Battelle Memorial Institute

    Inventor： Bin Li ,  Xiaoliang Wei ,  Qingtao Luo ,  Zimin Nie ,  Wei Wang ,  Vincent L. Sprenkle

    IPC: H01M8/02 ,  H01M8/18 ,  H01M8/20 ,  H01M8/04

    CPC classification number: H01M8/0243 ,  H01M8/0289 ,  H01M8/04186 ,  H01M8/188 ,  H01M8/20 ,  Y02E60/528

    Abstract: Composite separators having a porous structure and including acid-stable, hydrophilic, inorganic particles enmeshed in a substantially fully fluorinated polyolefin matrix can be utilized in a number of applications. The inorganic particles can provide hydrophilic characteristics. The pores of the separator result in good selectivity and electrical conductivity. The fluorinated polymeric backbone can result in high chemical stability. Accordingly, one application of the composite separators is in redox flow batteries as low cost membranes. In such applications, the composite separator can also enable additional property-enhancing features compared to ion-exchange membranes. For example, simple capacity control can be achieved through hydraulic pressure by balancing the volumes of electrolyte on each side of the separator. While a porous separator can also allow for volume and pressure regulation, in RFBs that utilize corrosive and/or oxidizing compounds, the composite separators described herein are preferable for their robustness in the presence of such compounds.

    Abstract translation: 具有多孔结构并且包含在基本上完全氟化的聚烯烃基质中的酸稳定的，亲水的无机颗粒的复合隔膜可用于许多应用中。 无机颗粒可以提供亲水性。 分离器的孔导致良好的选择性和导电性。 氟化聚合物骨架可导致高的化学稳定性。 因此，复合隔板的一个应用是作为低成本膜的氧化还原液流电池。 在这种应用中，与离子交换膜相比，复合分离器还可以实现额外的性能增强特征。 例如，通过平衡分离器两侧的电解液的体积，可以通过液压来实现简单的容量控制。 虽然多孔分离器还可以允许体积和压力调节，但是在使用腐蚀性和/或氧化性化合物的RFB中，本文所述的复合隔膜在其存在下的稳健性是优选的。

    High-Energy-Density, Aqueous, Metal-Polyiodide Redox Flow Batteries
    17.
    发明申请
    High-Energy-Density, Aqueous, Metal-Polyiodide Redox Flow Batteries 有权
    高能密度，水性，金属 - 多碘化物氧化还原流动电池

    公开(公告)号：US20150147673A1

    公开(公告)日：2015-05-28

    申请号：US14089499

    申请日：2013-11-25

    Applicant: BATTELLE MEMORIAL INSTITUTE

    Inventor： Bin Li ,  Zimin Nie ,  Wei Wang ,  Jun Liu ,  Vincent L. Sprenkle

    IPC: H01M8/18 ,  H01M8/20

    CPC classification number: H01M8/188 ,  H01M8/20 ,  Y02E60/528

    Abstract: Improved metal-based redox flow batteries (RFBs) can utilize a metal and a divalent cation of the metal (M2+) as an active redox couple for a first electrode and electrolyte, respectively, in a first half-cell. For example, the metal can be Zn. The RFBs can also utilize a second electrolyte having I−, anions of Ix (for x≧3), or both in an aqueous solution, wherein the I− and the anions of Ix (for x≧3) compose an active redox couple in a second half-cell.

    Abstract translation: 改进的基于金属的氧化还原电池（RFB）可以分别在第一半电池中利用金属（M2 +）的金属和二价阳离子作为第一电极和电解质的活性氧化还原对。 例如，金属可以是Zn。 RFB还可以在水溶液中使用具有Ix（x≥3）的阴离子或IIx的第二电解质，其中I和Ix的阴离子（对于x≥3）组成活性氧化还原对 第二个半单元格

    Sodium-Based Energy Storage Device Based on Surface-Driven Reactions
    18.
    发明申请
    Sodium-Based Energy Storage Device Based on Surface-Driven Reactions 审中-公开
    基于表面驱动反应的钠基储能装置

    公开(公告)号：US20140199596A1

    公开(公告)日：2014-07-17

    申请号：US13740878

    申请日：2013-01-14

    Applicant: BATTELLE MEMORIAL INSTITUTE

    Inventor： Yuyan Shao ,  Jun Liu ,  Jie Xiao ,  Wei Wang

    IPC: H01M4/38 ,  H02J15/00 ,  H02J7/00 ,  H01G9/00

    CPC classification number: H01M4/381 ,  H01G11/06 ,  H01G11/30 ,  H01G11/32 ,  H01G11/62 ,  H01M4/13 ,  H01M4/663 ,  H01M10/054 ,  H01M10/44 ,  Y02E60/13 ,  Y02T10/7022

    Abstract: The performance of sodium-based energy storage devices can be improved according to methods and devices based on surface-driven reactions between sodium ions and functional groups attached to surfaces of the cathode. The cathode substrate, which includes a conductive material, can provide high electron conductivity while the surface functional groups can provide reaction sites to store sodium ions. During discharge cycles, sodium ions will bind to the surface functional groups. During charge cycles, the sodium ions will be released from the surface functional groups. The surface-driven reactions are preferred compared to intercalation reactions.

    Abstract translation: 可以根据钠离子和附着于阴极表面的官能团之间的表面驱动反应的方法和装置，改​​善钠基储能装置的性能。 包括导电材料的阴极基底可以提供高电子导电性，而表面官能团可以提供反应位点来储存钠离子。 在放电循环期间，钠离子将与表面官能团结合。 在充电循环期间，钠离子将从表面官能团释放出来。 与嵌入反应相比，表面驱动的反应是优选的。

    In-Situ Health Monitoring System for Redox Flow Batteries
    19.
    发明公开
    In-Situ Health Monitoring System for Redox Flow Batteries 审中-公开

    公开(公告)号：US20240210356A1

    公开(公告)日：2024-06-27

    申请号：US18541396

    申请日：2023-12-15

    Applicant: BATTELLE MEMORIAL INSTITUTE

    Inventor： Xiaoqin Zang ,  Zhiqun Deng ,  Wei Wang ,  Litao Yan ,  Zimin Nie

    IPC: G01N29/032 ,  G01N29/024 ,  G01N29/24 ,  H01M8/04313 ,  H01M8/18

    CPC classification number: G01N29/032 ,  G01N29/024 ,  G01N29/2475 ,  H01M8/04313 ,  H01M8/188 ,  G01N2291/02416

    Abstract: This document describes techniques and systems for in operando, non-invasive monitoring of byproducts that commonly arise within redox flow batteries. The described techniques and systems allow for accurate, inexpensive, portable, and real-time methods to measure evolution of gas bubbles and precipitates within the electrolyte solutions of redox flow batteries. System operators can monitor and maintain the amount of byproducts within the electrolyte solution by measuring an acoustic attenuation coefficient of the electrolyte solution and changes in the speed at which ultrasonic echoes propagate through the solution. The acoustic attenuation coefficient is measured using an ultrasonic transducer attached to a probing cell, which is connected to an electrolyte flow of a redox flow battery. The acoustic attenuation coefficient provides an accurate, real-time identification of byproducts that is generally insensitive to varying operational temperatures of the electrolyte solution. The probing cell also allows examination of the sound speed as it detects echoes of the transmitted frequencies.

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