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公开(公告)号：US12009562B2
公开(公告)日：2024-06-11
申请号：US17727904
申请日：2022-04-25
发明人： Arthur J. Esswein , John Goeltz , Desiree Amadeo
摘要： Stable solutions comprising high concentrations of charged coordination complexes, including iron hexacyanides are described, as are methods of preparing and using same in chemical energy storage systems, including flow battery systems. The use of these compositions allows energy storage densities at levels unavailable by other iron hexacyanide systems.
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公开(公告)号：US11888201B2
公开(公告)日：2024-01-30
申请号：US17937391
申请日：2022-09-30
申请人： ESS TECH, INC.
发明人： Yang Song , Craig E. Evans
CPC分类号： H01M8/188 , H01M8/004 , H01M8/0693 , H01M8/20 , Y02E60/50
摘要： A method of rebalancing electrolytes in a redox flow battery system comprises directing hydrogen gas generated on the negative side of the redox flow battery system to a catalyst surface, and fluidly contacting the hydrogen gas with an electrolyte comprising a metal ion at the catalyst surface, wherein the metal ion is chemically reduced by the hydrogen gas at the catalyst surface, and a state of charge of the electrolyte and pH of the electrolyte remain substantially balanced.
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公开(公告)号：US11811119B2
公开(公告)日：2023-11-07
申请号：US17240470
申请日：2021-04-26
摘要： Embodiments described herein relate generally to electrochemical cells having high rate capability, and more particularly to devices, systems and methods of producing high capacity and high rate capability batteries having relatively thick semi-solid electrodes. In some embodiments, an electrochemical cells includes an anode and a semi-solid cathode. The semi-solid cathode includes a suspension of an active material of about 35% to about 75% by volume of an active material and about 0.5% to about 8% by volume of a conductive material in a non-aqueous liquid electrolyte. An ion-permeable membrane is disposed between the anode and the semi-solid cathode. The semi-solid cathode has a thickness of about 250 μm to about 2,000 μm, and the electrochemical cell has an area specific capacity of at least about 7 mAh/cm2 at a C-rate of C/4. In some embodiments, the semi-solid cathode slurry has a mixing index of at least about 0.9.
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公开(公告)号：US20190173117A1
公开(公告)日：2019-06-06
申请号：US16251895
申请日：2019-01-18
发明人： Hwei-Liang Chang , Ning-Yih Hsu , Yao-Sheng Hsu , Zone-Sure Chang
IPC分类号： H01M8/18 , H01M8/04186 , H01M8/24 , H01M8/04276 , H01M8/2483 , H01M8/20
CPC分类号： H01M8/188 , H01M8/04186 , H01M8/04276 , H01M8/20 , H01M8/2459 , H01M8/2483 , Y02E60/528
摘要： A flow battery apparatus is provided with shunted currents repressed. The apparatus has a positive electrode device, a negative electrode device and a plurality of gas-gap devices. Gas-gap devices are separately set between branching channels and inlet and outlet manifolds of positive and negative electrodes. Each of the branching channels separately has an inserting tube to be inserted into one of the gas-gap devices. The diameter of the inserted vessel of gas-gap devices is bigger than the diameter of the inserting tube connected to a corresponding one of the branching channels. Thus, working liquids transferred to the positive and negative electrodes are segregated with coordination of the gas-gap devices. Only air spaces and discrete liquid drops are left between separated parts of the working liquids. Thus, shunted currents are repressed by preventing conductive paths from being formed between the positive and negative electrodes.
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公开(公告)号：US20190020085A1
公开(公告)日：2019-01-17
申请号：US16057117
申请日：2018-08-07
CPC分类号： H01M12/08 , C02F1/469 , H01M2/0255 , H01M2/14 , H01M4/463 , H01M4/9041 , H01M8/04186 , H01M8/04283 , H01M8/0482 , H01M8/04828 , H01M8/0693 , H01M8/083 , H01M8/18 , H01M8/20 , H01M8/227 , H01M12/04 , H01M2300/0014
摘要： An anaerobic aluminum-water electrochemical cell that includes: a plurality of electrode stacks, each electrode stack featuring an aluminum or aluminum alloy anode, and at least one cathode configured to be electrically coupled to the anode; one or more physical separators between each electrode stack adjacent to the cathode; a housing configured to hold the electrode stacks, an electrolyte, and the physical separators; a water injection port, in the housing, configured to introduce water into the housing. The electrochemical cell also includes an amount of hydroxide base sufficient to form an electrolyte having a hydroxide base concentration of at least 0.05 M to at most 3 M when water is introduced between the anode and at least one cathode of the electrochemical cell. The aluminum or aluminum alloy of the anode is substantially free of titanium and boron.
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公开(公告)号：US20180277864A1
公开(公告)日：2018-09-27
申请号：US15992332
申请日：2018-05-30
IPC分类号： H01M8/04186 , H01M8/20 , H01M8/18 , H01M2/38
CPC分类号： H01M8/04186 , H01M2/38 , H01M8/188 , H01M8/20
摘要： High performance flow batteries, based on alkaline zinc/ferro-ferricyanide rechargeable (“ZnFe”) and similar flow batteries, may include one or more of the following improvements. First, the battery design has a cell stack comprising a low resistance positive electrode in at least one positive half cell and a low resistance negative electrode in at least one negative half cell, where the positive electrode and negative electrode resistances are selected for uniform high current density across a region of the cell stack. Second, a flow of electrolyte, such as zinc species in the ZnFe battery, with a high level of mixing through at least one negative half cell in a Zn deposition region proximate a deposition surface where the electrolyte close to the deposition surface has sufficiently high zinc concentration for deposition rates on the deposition surface that sustain the uniform high current density.
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公开(公告)号：US10050290B2
公开(公告)日：2018-08-14
申请号：US15107517
申请日：2013-12-26
发明人： Michael L. Perry , Andrew Smeltz , Wei Xie
IPC分类号： H01M8/20 , H01M8/04276 , H01M8/04186 , H01M8/0444 , H01M8/04746 , H01M8/18
CPC分类号： H01M8/04186 , H01M8/04276 , H01M8/0444 , H01M8/04783 , H01M8/188 , H01M8/20 , Y02E60/528
摘要： A flow battery that includes an electrochemical cell having first and second half-cells and an ion-selective separator there between wherein a fluid pressure differential across the ion-selective separator for a controlled amount of time is selectively utilized to urge a concentration imbalance of the electrochemically active species between the first and second electrolytes toward a concentration balance.
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公开(公告)号：US09997799B2
公开(公告)日：2018-06-12
申请号：US15166178
申请日：2016-05-26
发明人： Arthur J. Esswein , John Goeltz , Desiree Amadeo
IPC分类号： H01M8/20 , H01G11/02 , C25B15/02 , C25B1/04 , C25B1/30 , G01N27/30 , H01M8/22 , H01M8/18 , H01M8/08
CPC分类号： H01M8/222 , H01M8/08 , H01M8/188 , H01M8/20 , H01M2300/0002 , Y02E60/528
摘要： Stable solutions comprising high concentrations of charged coordination complexes, including iron hexacyanides are described, as are methods of preparing and using same in chemical energy storage systems, including flow battery systems. The use of these compositions allows energy storage densities at levels unavailable by other iron hexacyanide systems.
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公开(公告)号：US20180138532A1
公开(公告)日：2018-05-17
申请号：US15847951
申请日：2017-12-20
申请人： Ftorion, Inc.
IPC分类号： H01M8/0656 , H01M8/20 , H01M8/18 , H01M8/08 , H01M8/22
CPC分类号： H01M8/0656 , H01M8/08 , H01M8/188 , H01M8/20 , H01M8/22 , Y02E60/528
摘要： A method for producing electric power and regenerating an aqueous multi-electron oxidant (AMO) and a reducer in an energy storage cycle is provided. A discharge system includes a discharge unit, an acidification reactor, and a neutralization reactor. The acidification reactor converts an oxidant fluid including the AMO into an acidic oxidant fluid. The discharge unit generates electric power and a discharge fluid by transferring electrons from a positive electrode of an electrolyte-electrode assembly (EEA) to the AMO and from a reducer to a negative electrode of the EEA. The neutralization reactor neutralizes the discharge fluid to produce a neutral discharge fluid. The regeneration system splits an alkaline discharge fluid into a reducer and an intermediate oxidant in a splitting-disproportionation reactor and releases the reducer and a base, while producing the AMO by disproportionating the intermediate oxidant. The regenerated AMO and reducer are supplied to the discharge unit for power generation.
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公开(公告)号：US09972858B2
公开(公告)日：2018-05-15
申请号：US14773112
申请日：2014-08-04
发明人： Yongrong Dong , Hirokazu Kaku , Kei Hanafusa , Ryojun Sekine
CPC分类号： H01M8/188 , H01M8/20 , H01M2300/0011 , Y02E60/528
摘要： Provided is a redox flow battery that can suppress generation of a precipitation on a positive electrode. The redox flow battery performs charging and discharging by supplying a positive electrode electrolyte and a negative electrode electrolyte to a battery cell that includes a positive electrode, a negative electrode, and a separating membrane interposed between the two electrodes. The positive electrode electrolyte contains a manganese ion and an additional metal ion, the negative electrode electrolyte contains at least one metal ion selected from a titanium ion, a vanadium ion, a chromium ion, and a zinc ion, and the additional metal ion contained in the positive electrode electrolyte is at least one of an aluminum ion, a cadmium ion, an indium ion, a tin ion, an antimony ion, an iridium ion, a gold ion, a lead ion, a bismuth ion, and a magnesium ion.
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