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1.发明授权公开(公告)号：US11929528B2
公开(公告)日：2024-03-12
申请号：US16997403
申请日：2020-08-19
发明人： Evan R. King , Kean Duffey , Adam Morris-Cohen , John Goeltz , Steven Y. Reece
IPC分类号： H01M8/04186 , H01M4/96 , H01M8/04082 , H01M8/0444 , H01M8/04791 , H01M8/18 , H01M8/20 , H01M8/22
CPC分类号： H01M8/04194 , H01M4/96 , H01M8/04201 , H01M8/0444 , H01M8/04791 , H01M8/188 , H01M8/20 , H01M8/222 , Y02E60/50
摘要： The present invention relates to methods and apparatuses for determining the ratio of oxidized and reduced forms of a redox couple in solution, each method comprising: contacting first and second stationary working electrodes and first and second counter electrode to the solution; applying a first potential at the first stationary working electrode and a second potential at the second stationary working electrode relative to the respective counter electrodes and measuring first and second constant currents for the first and second stationary working electrodes, respectively; wherein the first and second constant currents have opposite signs and the ratio of the absolute values of the first and second constant currents reflects the ratio of the oxidized and reduced forms of the redox couple in solution. When used in the context of monitoring/controlling electrochemical cells, additional embodiments include those further comprising oxidizing or reducing the solution.
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公开(公告)号：US10418647B2
公开(公告)日：2019-09-17
申请号：US15090506
申请日：2016-04-04
IPC分类号： H01M8/0258 , H01M8/18 , H01M4/96 , H01M8/0228
摘要： Productive electrochemical reactions can often occur most effectively in proximity to a separator dividing an electrochemical cell into two half-cells. Parasitic reactions can often occur at locations more removed from the separator. Parasitic reactions are generally undesirable in flow batteries and other electrochemical systems, since they can impact operating performance. Flow batteries having a decreased incidence of parasitic reactions can include, a first half-cell containing a first electrode, a second half-cell containing a second electrode, a separator disposed between the first half-cell and the second half-cell and contacting the first and second electrodes, a first bipolar plate contacting the first electrode, and a second bipolar plate contacting the second electrode, where a portion of the first electrode or the first bipolar plate contains a dielectric material. The first electrode and the first bipolar plate still define a contiguous electrically conductive pathway when containing the dielectric material.
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3.发明申请公开(公告)号：US20200381751A1
公开(公告)日：2020-12-03
申请号：US16997403
申请日：2020-08-19
发明人： Evan R. King , Kean Duffey , Adam Morris-Cohen , John Goeltz , Steven Y. Reece
IPC分类号： H01M8/04186 , H01M8/18 , H01M8/20 , H01M4/96 , H01M8/04082 , H01M8/0444 , H01M8/04791 , H01M8/22
摘要： The present invention relates to methods and apparatuses for determining the ratio of oxidized and reduced forms of a redox couple in solution, each method comprising: contacting first and second stationary working electrodes and first and second counter electrode to the solution; applying a first potential at the first stationary working electrode and a second potential at the second stationary working electrode relative to the respective counter electrodes and measuring first and second constant currents for the first and second stationary working electrodes, respectively; wherein the first and second constant currents have opposite signs and the ratio of the absolute values of the first and second constant currents reflects the ratio of the oxidized and reduced forms of the redox couple in solution. When used in the context of monitoring/controlling electrochemical cells, additional embodiments include those further comprising oxidizing or reducing the solution.
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4.发明授权公开(公告)号：US10833340B2
公开(公告)日：2020-11-10
申请号：US15033607
申请日：2014-10-31
发明人： Evan R. King , Kean Duffey , Adam Morris-Cohen , John Goeltz , Steven Y. Reece
IPC分类号： H01M8/04186 , H01M8/18 , H01M8/20 , H01M4/96 , H01M8/04082 , H01M8/0444 , H01M8/04791 , H01M8/22
摘要： The present invention relates to methods and apparatuses for determining the ratio of oxidized and reduced forms of a redox couple in solution, each method comprising: (a) contacting a first stationary working electrode and a first counter electrode to the solution; (b) applying a first potential at the first working electrode and measuring a first constant current; (c) applying a second potential at the first working electrode and measuring a second constant current; wherein the sign of the first and second currents are not the same; and wherein the ratio of the absolute values of the first and second currents reflects the ratio of the oxidized and reduced forms of the redox couple in solution. When used in the context of monitoring/controlling electrochemical cells, additional embodiments include those further comprising (d) oxidizing or reducing the solution, so as to alter the balance of the oxidized and reduced forms of the redox couple in solution, to a degree dependent on the ratio of the absolute values of the first and second currents. These embodiments may be used in the context of maintaining an electrochemical cell, stack, or system.
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5.发明公开公开(公告)号：US20240113313A1
公开(公告)日：2024-04-04
申请号：US18526040
申请日：2023-12-01
发明人： Evan R. King , Kean Duffey , Adam Morris-Cohen , John Goeltz , Steven Y. Reece
IPC分类号： H01M8/04186 , H01M4/96 , H01M8/04082 , H01M8/0444 , H01M8/04791 , H01M8/18 , H01M8/20 , H01M8/22
CPC分类号： H01M8/04194 , H01M4/96 , H01M8/04201 , H01M8/0444 , H01M8/04791 , H01M8/188 , H01M8/20 , H01M8/222 , Y02E60/50
摘要： The present invention relates to methods and apparatuses for determining the ratio of oxidized and reduced forms of a redox couple in solution, each method comprising: contacting first and second stationary working electrodes and first and second counter electrode to the solution; applying a first potential at the first stationary working electrode and a second potential at the second stationary working electrode relative to the respective counter electrodes and measuring first and second constant currents for the first and second stationary working electrodes, respectively; wherein the first and second constant currents have opposite signs and the ratio of the absolute values of the first and second constant currents reflects the ratio of the oxidized and reduced forms of the redox couple in solution. When used in the context of monitoring/controlling electrochemical cells, additional embodiments include those further comprising oxidizing or reducing the solution.
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公开(公告)号：US20240006635A1
公开(公告)日：2024-01-04
申请号：US18343547
申请日：2023-06-28
IPC分类号： H01M8/04276 , H01M8/04082
CPC分类号： H01M8/04276 , H01M8/04201
摘要： Provided are flow batteries, comprising: a first reservoir containing a first electrolyte solution and one or more battery packs. A battery pack comprises a battery stack, an enclosure enclosing the battery stack, a first supply flow path, and a first return flow path. The first supply flow path comprises a substantially U-shaped bend such that a first portion of the first supply flow path and a second portion of the first supply flow path are positioned substantially parallel to each other and within the enclosure. The first return flow path comprises a substantially U-shaped bend such that a first portion of the first return flow path and a second portion of the first return flow path are positioned substantially parallel to each other and within the enclosure. These flow batteries are useful to mitigate inter-stack shunt currents.
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公开(公告)号：US20240178429A1
公开(公告)日：2024-05-30
申请号：US18431251
申请日：2024-02-02
IPC分类号： H01M8/18 , H01M8/04276
CPC分类号： H01M8/188 , H01M8/04276
摘要： Provided is a flow battery that includes a first electrochemical cell. The first electrochemical cell includes a separator and a first half-cell. The first half-cell includes a first electrode and a first bipolar plate. The first bipolar plate includes a first active side comprising a first inner plate subflow architecture configured to receive a first electrolyte, and a second active side positioned opposite the first active side, the second active side comprising a second inner plate subflow architecture configured to receive a second electrolyte. The first inner plate subflow architecture is different than the second inner plate subflow architecture.
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公开(公告)号：US11916272B2
公开(公告)日：2024-02-27
申请号：US18454369
申请日：2023-08-23
IPC分类号： H01M8/04276 , H01M8/18
CPC分类号： H01M8/188 , H01M8/04276
摘要： Provided are flow batteries that include a fluidic train within a dynamic fluidic network system which fluidic train is convertible between a first state and a second state, the first state the first state placing a main electrolyte source and a dynamic fluidic network, outside the fluidic train and an electrode region, into fluid communication with the electrode region and the second state placing the main electrolyte source and the dynamic fluidic network, outside the fluidic train and the electrode region, into fluid isolation from the electrode region and placing the electrode region into fluid communication with a sampling segment. Also provided are methods of operating flow batteries.
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公开(公告)号：US11777128B1
公开(公告)日：2023-10-03
申请号：US17810462
申请日：2022-07-01
IPC分类号： H01M8/04276 , H01M8/18
CPC分类号： H01M8/188 , H01M8/04276
摘要： Provided are flow batteries that include a fluidic train within a dynamic fluidic network system which fluidic train is convertible between a first state and a second state, the first state the first state placing a main electrolyte source and a dynamic fluidic network, outside the fluidic train and an electrode region, into fluid communication with the electrode region and the second state placing the main electrolyte source and the dynamic fluidic network, outside the fluidic train and the electrode region, into fluid isolation from the electrode region and placing the electrode region into fluid communication with a sampling segment. Also provided are methods of operating flow batteries.
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10.发明授权公开(公告)号：US10903511B2
公开(公告)日：2021-01-26
申请号：US15364206
申请日：2016-11-29
发明人： Adam Morris-Cohen
IPC分类号： H01M8/04276 , H01M8/04746 , H01M8/04186 , H01M8/04537 , H01M8/18 , H01M8/20
摘要： The circulation rates of the electrolyte solutions in a flow battery can impact operating performance. Adjusting the circulation rates can allow improved performance to be realized. Flow battery systems having adjustable circulation rates can include a first half-cell containing a first electrolyte solution, a second half-cell containing a second electrolyte solution, at least one pump configured to circulate the first electrolyte solution and the second electrolyte solution at adjustable circulation rates through at least one half-cell in response to a value of Pexit/I or I/Penter, and at least one sensor configured to measure net electrical power entering or exiting the flow battery system, and an amount of electrical current passing through the whole cell. I is the electrical power passing through the whole cell. Pexit is net electrical power exiting the system in a discharging mode, and Penter is net electrical power entering the system in a charging mode.
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