公开(公告)号：US20170301944A1

公开(公告)日：2017-10-19

申请号：US15508113

申请日：2015-09-03

Applicant: OCI COMPANY LTD.

Inventor： Byung-Man KANG ,  Soo-Whan KIM ,  Min-Ki HONG ,  Byung-Chul KIM

IPC: H01M8/18 ,  H01M4/58

CPC classification number: H01M8/188 ,  H01M4/582 ,  H01M2300/0011 ,  Y02E60/528

Abstract: The present invention relates to a redox flow battery and, more specifically, to a redox flow battery comprising an anolyte, a catholyte, and an ion exchange membrane, wherein the anolyte and the catholyte respectively comprise an electrolyte containing a Cl− ion and an active material containing a vanadium ion, and the electrolyte comprises at least one side reaction inhibitor selected from the group consisting of a metal phosphate, a metal hydrochloride and a metal sulfate.

公开(公告)号：US20170054172A1

公开(公告)日：2017-02-23

申请号：US15119908

申请日：2015-02-16

Applicant: OCI COMPANY LTD.

Inventor： Ji-Eun HONG ,  Seung-Yoen LEE ,  Soo-Whan KIM ,  Hee-Chang YE ,  Byung-Chul KIM

IPC: H01M8/18 ,  H01M8/02 ,  H01M8/20

CPC classification number: H01M8/188 ,  H01M8/02 ,  H01M8/20 ,  Y02E60/528

Abstract: The present invention relates to a redox flow battery, and more particularly, to a redox flow battery which is charged and discharged by supplying a positive electrolyte and a negative electrolyte to a battery cell using an active material containing vanadium and a cation exchange membrane, in which the positive electrolyte and the negative electrolyte contain vanadium ions as active ions, the difference in volume between the positive electrolyte and the negative electrolyte is maintained at 10% or less, and the total concentration of anions in the negative electrolyte is higher than the total concentration of anions in the positive electrolyte, whereby the transfer of water in the battery is controlled and a change in the volume of the electrolytes is minimized.

Abstract translation: 本发明涉及一种氧化还原液流电池，更具体地说，涉及通过使用含有钒和阳离子交换膜的活性物质向电池单体供给正电解质和负电解质而进行充放电的氧化还原液流电池， 正电解质和负电解质含有钒离子作为活性离子，正电解质和负电解质之间的体积差保持在10％以下，负电解质中阴离子的总浓度高于总电解质 正电解液中阴离子的浓度被控制，从而电池中的水的转移受到控制，并且电解质的体积变化被最小化。

公开(公告)号：US20170346114A1

公开(公告)日：2017-11-30

申请号：US15535619

申请日：2015-12-16

Applicant: OCI COMPANY LTD.

Inventor： Min-Ki HONG ,  Eun-Sun OH ,  Hee-Chang YE ,  Byung-Chul KIM ,  Soo-Whan KIM

IPC: H01M8/04276 ,  H01M8/18 ,  H01M8/04537

CPC classification number: H01M8/04276 ,  H01M8/04611 ,  H01M8/0482 ,  H01M8/188 ,  Y02E60/528

Abstract: According to one embodiment of the present invention, the method for controlling the pump speed of a redox flow battery for transferring an electrolyte stored in an electrolyte tank to a cell stack comprises the steps of: measuring the input power and/or the output power of the redox flow battery; measuring the charging power and/or the discharging power of the redox flow battery; calculating the power loss of the redox flow battery by using the difference between the input power and the charging power, or the difference between the output power and the discharging power; and adjusting the pump speed according to the power loss.

公开(公告)号：US20150017556A1

公开(公告)日：2015-01-15

申请号：US14328409

申请日：2014-07-10

Applicant: OCI COMPANY LTD.

Inventor： Ok-Seon KIM ,  Min-Ki HONG ,  Soo-Whan KIM ,  Byung-Chul KIM

IPC: H01M8/04 ,  H01M8/18

CPC classification number: H01M8/04694 ,  H01M8/04313 ,  H01M8/184 ,  H01M8/188 ,  Y02E60/528

Abstract: Disclosed are a redox flow battery system and a control method for the same. In the redox flow battery system, an oxidation number is controlled by injecting at least one of an oxidant and a reducer into at least one of a cathode side and an anode side using a measured oxidation number of the electrolyte. Therefore, even though an oxidation number balance is inevitably broken, since an initial concentration of vanadium ion, that is, an average oxidation number is maintained without a large change in the concentration, efficiency and stability of a battery may be promoted, and the oxidation number balance may be monitored in real time and the oxidation number balance may be recovered without a separate process of separating electrolytes to entirely mixing the electrolytes, or the like, that is, without stopping a function of the battery, thereby facilitating maintenance and control of performance of the battery.

Abstract translation: 公开了一种氧化还原液流电池系统及其控制方法。 在氧化还原液流电池系统中，使用测定的电解质的氧化数，将氧化剂和还原剂中的至少一种注入至阴极侧和阳极侧的至少一方来控制氧化数。 因此，即使氧化数平衡不可避免地被破坏，由于维持初始浓度的钒离子，即平均氧化数而不会发生大的浓度变化，因此可以促进电池的效率和稳定性，氧化 可以实时监测数量平衡，并且可以在不分离电解质以完全混合电解质等的方法的情况下回收氧化数量平衡，即不停止电池的功能，从而便于维护和控制 电池的性能。

公开(公告)号：US20150118550A1

公开(公告)日：2015-04-30

申请号：US14522068

申请日：2014-10-23

Applicant: OCI COMPANY LTD.

Inventor： Jong-Hwa SHON ,  Byung-Chul KIM ,  Soo-Whan KIM

IPC: H01M4/86 ,  H01M4/88 ,  H01M8/18 ,  H01M4/96

CPC classification number: H01M4/8631 ,  H01M4/04 ,  H01M4/0471 ,  H01M4/8875 ,  H01M4/96 ,  H01M8/188 ,  H01M2004/8694

Abstract: Disclosed is a carbon structure electrode for redox flow batteries, which includes a plurality of spherical macropores formed on a surface of a polymer-derived carbon structure and inside the polymer-derived carbon structure so as to allow electrolyte migration. The carbon structure electrode for redox flow batteries has excellent electrical conductivity and enables cost reduction through a simplified preparation process.

Abstract translation: 公开了一种用于氧化还原液电池的碳结构电极，其包括在聚合物衍生的碳结构的表面上形成的多个球形大孔，并且在聚合物衍生的碳结构内部，以使电解质迁移。 用于氧化还原液流电池的碳结构电极具有优异的导电性，并且通过简化的制备工艺可以降低成本。