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公开(公告)号：US20190341643A1
公开(公告)日：2019-11-07
申请号：US16509157
申请日：2019-07-11
IPC分类号： H01M8/18 , H01M8/04276 , H01M8/20 , H01M8/04186 , H01M8/0202
摘要： Parasitic reactions, such as production of hydrogen and oxidation by oxygen, can occur under the operating conditions of flow batteries and other electrochemical systems. Such parasitic reactions can undesirably impact operating performance by altering the pH and/or state of charge of one or both electrolyte solutions in a flow battery. Electrochemical balancing cells can allow rebalancing of electrolyte solutions to take place. Electrochemical balancing cells suitable for placement in fluid communication with both electrolyte solutions of a flow battery can include: a first chamber containing a first electrode, a second chamber containing a second electrode, a third chamber disposed between the first chamber and the second chamber, an ion-selective membrane forming a first interface between the first chamber and the third chamber, and a bipolar membrane forming a second interface between the second chamber and the third chamber.
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公开(公告)号：US10411285B2
公开(公告)日：2019-09-10
申请号：US15098273
申请日：2016-04-13
IPC分类号： H01M8/18 , H01M8/0202 , H01M8/04186 , H01M8/04276 , H01M8/1039 , H01M8/20 , H01M8/1023
摘要： Parasitic reactions, such as production of hydrogen and oxidation by oxygen, can occur under the operating conditions of flow batteries and other electrochemical systems. Such parasitic reactions can undesirably impact operating performance by altering the pH and/or state of charge of one or both electrolyte solutions in a flow battery. Electrochemical balancing cells can allow rebalancing of electrolyte solutions to take place. Electrochemical balancing cells suitable for placement in fluid communication with both electrolyte solutions of a flow battery can include: a first chamber containing a first electrode, a second chamber containing a second electrode, a third chamber disposed between the first chamber and the second chamber, an ion-selective membrane forming a first interface between the first chamber and the third chamber, and a bipolar membrane forming a second interface between the second chamber and the third chamber.
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公开(公告)号：US10403911B2
公开(公告)日：2019-09-03
申请号：US15289063
申请日：2016-10-07
发明人： Srivatsava Venkataranga Puranam , Timothy B. Grejtak , Jeremy Loretz , Thomas H. Madden , Joseph Johannes Henricus Pijpers , Helen Elizabeth Vanbenschoten , Curtis Warrington
IPC分类号： H01M8/0297 , H01M8/0202 , H01M8/18 , H01M8/20 , H01M8/0234 , H01M8/0245
摘要： Electrochemical cells, such as those present within flow batteries, can have an electrode and a bipolar plate in at least one half-cell interfacially bonded together with an electrically conductive adhesive. Bonding the bipolar plate to the electrode can decrease contact resistance and sometimes lessen the incidence of parasitic reactions in the electrochemical cell. Flow batteries containing these features can include: a first half-cell containing a first electrode in interfacial contact with a first bipolar plate, a second half-cell containing a second electrode in interfacial contact with a second bipolar plate, and a separator disposed between the first half-cell and the second half-cell. An electrically conductive adhesive interfacially bonds at least one of the first electrode to the first bipolar plate and the second electrode to the second bipolar plate. Each electrode maintains fluid communication with its corresponding bipolar plate.
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公开(公告)号：US10833347B2
公开(公告)日：2020-11-10
申请号：US16509157
申请日：2019-07-11
IPC分类号： H01M8/18 , H01M8/0202 , H01M8/04186 , H01M8/04276 , H01M8/20 , H01M8/1023 , H01M8/1039
摘要： Parasitic reactions, such as production of hydrogen and oxidation by oxygen, can occur under the operating conditions of flow batteries and other electrochemical systems. Such parasitic reactions can undesirably impact operating performance by altering the pH and/or state of charge of one or both electrolyte solutions in a flow battery. Electrochemical balancing cells can allow rebalancing of electrolyte solutions to take place. Electrochemical balancing cells suitable for placement in fluid communication with both electrolyte solutions of a flow battery can include: a first chamber containing a first electrode, a second chamber containing a second electrode, a third chamber disposed between the first chamber and the second chamber, an ion-selective membrane forming a first interface between the first chamber and the third chamber, and a bipolar membrane forming a second interface between the second chamber and the third chamber.
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公开(公告)号：US10347925B2
公开(公告)日：2019-07-09
申请号：US15143344
申请日：2016-04-29
IPC分类号： H01M8/04186 , H01M8/18 , H01M8/08 , H01M8/1053 , H01M8/1067 , H01M4/90 , H01M8/1018
摘要： Parasitic reactions, such as evolution of hydrogen at the negative electrode, can occur under the operating conditions of flow batteries and other electrochemical systems. Such parasitic reactions can undesirably impact operating performance by altering the pH and/or state of charge of one or both electrolyte solutions in a flow battery. Electrochemical balancing cells can allow adjustment of electrolyte solutions to take place. Electrochemical balancing cells suitable for placement in fluid communication with both electrolyte solutions of a flow battery can include: a first chamber containing a first electrode, a second chamber containing a second electrode, a third chamber disposed between the first chamber and the second chamber, a cation-selective membrane forming a first interface between the first chamber and the third chamber, and a bipolar membrane, a cation-selective membrane, or a membrane electrode assembly forming a second interface between the second chamber and the third chamber.
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公开(公告)号：US10153502B2
公开(公告)日：2018-12-11
申请号：US14963147
申请日：2015-12-08
IPC分类号： H01M8/18 , G01R31/36 , G01N21/552 , H01M8/0444 , H01M8/04537 , G01N21/85
摘要： State of charge determination within electrochemical systems, such as flow batteries, can often be difficult to measure, particularly in an in situ manner. Methods for assaying the condition of an electrochemical system can include: interacting electromagnetic radiation with a first electrolyte solution at a location within the electrochemical system, the electromagnetic radiation being delivered through an optical material configured to exhibit attenuated total reflectance at an interface between the optical material and the first electrolyte solution; receiving at a detector electromagnetic radiation that has interacted with the first electrolyte solution via one or more attenuated total reflectances within the optical material; and measuring an absorbance of at least one of an oxidized form or a reduced form of a first coordination compound within the first electrolyte solution via the electromagnetic radiation that is received at the detector.
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