Class / Patent application number | Description | Number of patent applications / Date published |
429051000 | Electrolyte circulation | 58 |
20090023052 | SOLAR TO ELECTRICAL ENERGY CONVERSION USING THE STREAMING POTENTIAL - A system and method is presented that uses solar power driven expansion of an electrolytic solution to force the electrolytic solution from a container through at least one pore of an insulator having a fixed surface charge of one polarity into a collection receptacle. The velocities of the cations and anions flowing through the pore differ because of the fixed surface charge of the pore and this produces an electrical charge separation, the streaming potential, as a source of electrical power. Energy absorption spans the full solar spectrum including infrared, visible and near ultraviolet wavelengths. | 01-22-2009 |
20090130539 | ELECTRIC POWER GRID BUFFER - An electric power grid buffer for storing electric energy by converting low energy electrochemistry waste into higher energy electrochemistry fuel and supplying electric energy to an electric power grid by discharging the higher energy electrochemistry fuel under production of low energy electrochemistry waste. In one embodiment, the electric power grid buffer stores electric energy generated by renewable energy sources, such as wind power or solar cells, and supplies an electric current to an electric power grid such that the renewable energy source is completely isolated from the electric power grid. | 05-21-2009 |
20090186259 | ELECTRIC STORAGE BATTERIES WITH ELECTROLYTE AGITATION - The invention provides a gauntlet for tubular type electric storage batteries with air mixing of the electrolyte, the gauntlet including multiple individual tubes forming a cartridge belt type gauntlet, where the walls of at least one of these individual tubes are substantially impermeable to air, as well as a process for its manufacture. The invention further pertains to an electric storage battery using such gauntlets. | 07-23-2009 |
20090197151 | METHOD FOR OPERATING REDOX FLOW BATTERY AND REDOX FLOW BATTERY CELL STACK - The invention provides an operating method of a redox flow battery capable of grasping a charging state of the battery more reliably to stabilize an output capacity of the battery. The method is for operating the redox flow battery comprising a cell stack | 08-06-2009 |
20090239131 | Electrochemical energy cell system - A metal halogen electrochemical energy cell system that generates an electrical potential. One embodiment of the system includes at least one cell including at least one positive electrode and at least one negative electrode, at least one electrolyte, a mixing venturi that mixes the electrolyte with a halogen reactant, and a circulation pump that conveys the electrolyte mixed with the halogen reactant through the positive electrode and across the metal electrode. Preferably, the negative electrodes are made of zinc, the metal is zinc, the positive electrodes are made of porous carbonaceous material, the halogen is chlorine, the electrolyte is an aqueous zinc-chloride electrolyte, and the halogen reactant is a chlorine reactant. Also, variations of the system and a method of operation for the systems. | 09-24-2009 |
20100009243 | ELECTROCHEMICAL ENERGY CELL SYSTEM - A metal halogen electrochemical energy cell system that generates an electrical potential. One embodiment of the system includes at least one cell including at least one positive electrode and at least one negative electrode, at least one electrolyte, a mixing venturi that mixes the electrolyte with a halogen reactant, and a circulation pump that conveys the electrolyte mixed with the halogen reactant through the positive electrode and across the metal electrode. Preferably, the positive electrode comprises porous carbonaceous material, the negative electrode comprises zinc, the metal comprises zinc, the halogen comprises chlorine, the electrolyte comprises an aqueous zinc-chloride electrolyte, and the halogen reactant comprises a chlorine reactant. Also, variations of the system and a method of operation for the systems. | 01-14-2010 |
20100086834 | ENERGY STORAGE DEVICE AND ASSOCIATED METHOD - An energy storage device is provided that includes a separator having a first surface and a second surface. The first surface defines at least a portion of a cathodic chamber, and the second surface defines an anodic chamber. The cathodic chamber includes an alkali metal halide that forms an ion that is capable of conducting through the separator. The anodic chamber has a volume that is filled with a consumable fluid. The amount of the consumable fluid is greater than 90 percent by volume of the anodic chamber volume. Furthermore, the consumable fluid is reactive with an ionic species of the alkali metal halide. A method of sealing the energy storage device is also provided. | 04-08-2010 |
20100092843 | VENTURI PUMPING SYSTEM IN A HYDROGEN GAS CIRCULATION OF A FLOW BATTERY - A redox flow battery system is presented that utilizes a rebalancing cell. A pump based on the Venturi principle is coupled to the rebalancing cell in order to actively circulate hydrogen gas through the rebalancing cell. The venturi pump requires no moving parts which eliminates problems of reliability and cost. Utilizing the venturi pump to actively circulate gas can significantly enhanced the function of the rebalance cell thereby providing enhanced capacity and performance of the flow battery system. | 04-15-2010 |
20110014505 | LIQUID ELECTRODE BATTERY - An electrochemical battery that exchanges energy with an external device. The battery includes a container containing a positive electrode, a negative electrode and an intervening electrolyte, the electrodes and electrolyte existing as liquid material layers in the container at the operating temperature of the battery so that adjacent layers form respective electrode-electrolyte interfaces. Positive and negative current collectors are in electrical contact with the positive and negative electrodes, respectively, both collectors being adapted for connection to the external device to create a circuit through which current flows. A circulation producer in the battery causes circulation within at least one of the layers to increase the flux of material in one layer to an interface with an adjacent layer, thereby giving the battery a greater current/power capability. | 01-20-2011 |
20110070468 | ELECTROCHEMICAL ENERGY CELL SYSTEM - A metal halogen electrochemical energy cell system that generates an electrical potential. One embodiment of the system includes at least one cell including at least one positive electrode and at least one negative electrode, at least one electrolyte, a mixing venturi that mixes the electrolyte with a halogen reactant, and a circulation pump that conveys the electrolyte mixed with the halogen reactant through the positive electrode and across the metal electrode. Preferably, the positive electrode comprises porous carbonaceous material, the negative electrode comprises zinc, the metal comprises zinc, the halogen comprises chlorine, the electrolyte comprises an aqueous zinc-chloride electrolyte, and the halogen reactant comprises a chlorine reactant. Also, variations of the system and a method of operation for the systems. | 03-24-2011 |
20110070469 | SUPPLYING POWER FOR A MICRO SYSTEM - A micro system power supply ( | 03-24-2011 |
20110076526 | ELECTROLYTE COMPOSITIONS - An electrolyte for a flow cell battery is provided. The electrolyte includes a concentration of chromium ions that is greater than the concentration of iron ions. | 03-31-2011 |
20110200853 | Shunt current interruption in electrochemical energy generation system - An electrochemical energy generation system includes plural electrochemical cells connected electrically in series that utilize a common electrolyte that can be delivered to each of the cells and/or collected from each of the cells using one or more manifolds. The system provides a possibility for reducing shunt currents by applying a shunt-current minimizing voltage to terminals of the manifolds from the terminal electrodes of the cells connected in series. | 08-18-2011 |
20110244277 | HIGH PERFORMANCE FLOW BATTERY - 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. The mixing in the flow may be induced by structures such as: conductive and non-conductive meshes; screens; ribbons; foam structures; arrays of cones, cylinders, or pyramids; and other arrangements of wires or tubes used solely or in combination with a planar electrode surface. Third, the zinc electrolyte has a high concentration and in some embodiments has a concentration greater than the equilibrium saturation concentration—the zinc electrolyte is super-saturated with Zn ions. | 10-06-2011 |
20120045669 | Flowing Electrolyte Battery With Electric Potential Neutralization - Flowing electrolyte batteries capable of being selectively neutralized chemically; processes of selectively neutralizing flowing electrolyte batteries chemically; and processes of selectively restoring the electrical potential of flowing electrolyte batteries are disclosed herein. | 02-23-2012 |
20120058370 | Flow Battery With Radial Electrolyte Distribution - An electrochemical flow cell includes a permeable electrode, an impermeable electrode located adjacent to and spaced apart from the permeable electrode and a reaction zone electrolyte flow channel located between a first side of the permeable electrode and a first side of the impermeable electrode. The electrochemical flow cell also includes at least one electrolyte flow channel located adjacent to a second side of the permeable electrode, at least one central electrolyte flow conduit extending through a central portion of the permeable electrode and through a central portion of the impermeable electrode and at least one peripheral electrolyte flow inlet/outlet located in a peripheral portion of the electrochemical cell above or below the permeable electrode. | 03-08-2012 |
20120082873 | CROSS-FLOW ELECTROCHEMICAL BATTERIES - A cross-flow electrochemical cell for producing electricity is disclosed that incorporates means for cross-flow pumping of electrolyte through both anode and cathode electrodes in the same direction to achieve markedly higher discharging and charging currents. Cross-flow pumping enabling use of thick mesh electrodes comprising scaffolds impregnated with high-surface-area metal nanoparticles and having high porosity are also taught. | 04-05-2012 |
20120183816 | QUENCHING SYSTEM - A quencher for a flow cell battery is described. The quencher utilizes a quench solution formed from FeCl | 07-19-2012 |
20120189880 | ELECTROCHEMICAL POWER DELIVERY VOLTAGE REGULATOR - An electrochemical power delivery voltage regulator. The regulator includes one or more fluid circuits having a first electrolyte solution with a primary redox couple and a secondary redox couple; and a second electrolyte solution with a further primary redox couple; a polyelectrode in contact with the first electrolyte solution; a further electrode in contact with the second electrolyte solution; and control means coupled to control a relative concentration of electroactive species of the secondary redox couple and thereby impact a mixed potential at the polyelectrode, such as to regulate a supply voltage of the electrochemical power delivery voltage regulator, in operation. The invention further concerns a corresponding method of voltage regulation and a system comprising such an electrochemical power and electrical consumers with consumer fluid circuits in fluid communication with respective one or more fluid circuits of the electrochemical power delivery voltage regulator. | 07-26-2012 |
20120202095 | RECOMBINATOR FOR FLOWING ELECTROLYTE BATTERY - A recombinator for a flowing electrolyte battery comprises a housing defining a reaction chamber for receiving a halogen source and a hydrogen source. A catalyst is located within the reaction chamber to catalyse the formation of hydrogen halide from the halogen source and the hydrogen source and substantially all of the halogen source, hydrogen source and hydrogen halide within the reaction chamber are maintained in gaseous form. | 08-09-2012 |
20120244395 | FLOW BATTERY WITH INTERDIGITATED FLOW FIELD - A flow battery includes a first liquid-porous electrode, a second liquid-porous electrode spaced apart from the first liquid-porous electrode, and an ion-exchange membrane arranged between the first liquid-porous electrode and the second liquid-porous electrode. First and second flow fields are adjacent to the respective first liquid-porous electrode and second liquid-porous electrode. Each of the flow fields includes first channels having at least partially blocked outlets and second channels having at least partially blocked inlets. The second channels are interdigitated with the first channels. The flow fields provide a configuration and method of operation for relatively thin electrodes with moderate pressure drops and forced convective flow through the liquid-porous electrodes. | 09-27-2012 |
20120270079 | BROMINE COMPLEX VALVE - A zinc-bromine flowing electrolyte battery comprising a negative electrolyte pump to circulate negative electrolyte within a negative electrolyte circulation path, a positive electrolyte pump to circulate positive electrolyte within a positive electrolyte circulation path and having complexed bromine located within a positive electrolyte tank, the positive electrolyte tank in fluid communication with the positive electrolyte circulation path. In use, preferential activation of either of the negative electrolyte pump or the positive electrolyte pump will determine whether positive electrolyte only or a positive electrolyte and complexed bromine mix are circulated within the positive electrolyte circulation path. | 10-25-2012 |
20120321920 | SYSTEM AND METHOD FOR OPERATING A FLOW BATTERY SYSTEM AT AN ELEVATED TEMPERATURE - A flow battery system includes a flow battery stack, a sensor and a coolant loop. The flow battery stack has an electrolyte solution flowing therethrough, and the sensor is in communication with the electrolyte solution. The coolant loop is in heat exchange communication with the electrolyte solution, wherein the heat exchange communication is selective based on an output from the sensor. | 12-20-2012 |
20120328910 | Electrolyte Flow Configuration for a Metal-Halogen Flow Battery - A flow battery and method of operating a flow battery. The flow battery includes a first electrode, a second electrode and a reaction zone located between the first electrode and the second electrode. The flow battery is configured with a first electrolyte flow configuration in charge mode and a second flow configuration in discharge mode. The first electrolyte flow configuration is at least partially different from the second electrolyte flow configuration. | 12-27-2012 |
20120328911 | SYSTEM AND METHOD FOR OPTIMIZING EFFICIENCY AND POWER OUTPUT FROM A VANADIUM REDOX BATTERY ENERGY STORAGE SYSTEM - An energy storage system includes a vanadium redox battery that interfaces with a control system to optimize performance and efficiency. The control system calculates optimal pump speeds, electrolyte temperature ranges, and charge and discharge rates. The control system instructs the vanadium redox battery to operate in accordance with the prescribed parameters. The control system further calculates optimal temperature ranges and charge and discharge rates for the vanadium redox battery. | 12-27-2012 |
20130011702 | Redox Flow Battery System with Divided Tank System - A redox flow battery system is provided with one or more tanks for containing electrolytes. Embodiments of electrolyte tanks include active and/or passive dividers within a single tank structure. Dividers may be configured to prevent mixing of a charged electrolyte and a discharged electrolyte stored within a single tank. | 01-10-2013 |
20130029185 | Electrochemical System Having a System for Determining a State of Charge - An electrochemical system, such as a flow battery, includes a vessel. The vessel contains at least one cell that includes a first electrode, a second electrode and a reaction zone between the first and second electrodes. The vessel also contains a flow circuit configured to deliver a fluid comprising a liquefied halogen reactant and at least one metal halide electrolyte to the at least one cell, and at least one sensor configured to measure a property of the electrochemical system indicative of a state of charge (SOC) of the electrochemical system. | 01-31-2013 |
20130029186 | ELECTROLYTE INJECTION DEVICE AND ELECTROLYTE INJECTION METHOD - A battery case is disposed in a decompression chamber. An electrolyte in an aeration tank is injected into the battery case in the decompression chamber using a liquid injection nozzle. By exposing the electrolyte to an ambient pressure in the decompression chamber within the aeration tank before supplying the electrolyte to the liquid injection nozzle, a pressure of the electrolyte is regulated to a pressure in the decompression chamber, and gas molecules in the electrolyte are separated therefrom. By providing the aeration tank, an efficiency with which the gas molecules are separated from the electrolyte is improved, and as a result, the electrolyte is injected into the battery case smoothly. | 01-31-2013 |
20130029187 | HIGH PERFORMANCE FLOW BATTERY - 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. The mixing in the flow may be induced by structures such as: conductive and non-conductive meshes; screens; ribbons; foam structures; arrays of cones, cylinders, or pyramids; and other arrangements of wires or tubes used solely or in combination with a planar electrode surface. Third, the zinc electrolyte has a high concentration and in some embodiments has a concentration greater than the equilibrium saturation concentration—the zinc electrolyte is super-saturated with Zn ions. | 01-31-2013 |
20130040171 | ENERGY STORAGE DEVICE AND ASSOCIATED METHOD - An energy storage device is provided that includes a reservoir in operative communication with a positive electrode such that the positive electrode remains fully flooded, even at the top of the charge cycle. The device more particularly includes a housing receiving therein, in a coaxial manner, an ion conducting member, and a current collector member received coaxially within the ion conducting member. In this device, a first region is provided in the space between the housing and the ion conducting member and a second region is provided in the space between the ion conducting member and the current collector member. The interior of the current collector member defines a reservoir having a certain volume at least equal to the volume of the void space created in the second region during charging of the device. | 02-14-2013 |
20130045399 | Flow Battery with Reactant Separation - An embodiment relates an electrochemical system. The system includes (a) at least one cell that comprises a first electrode, a second electrode and a reaction zone between the first and second electrode. The system also includes (b) a liquefied halogen reactant (c) at least one metal halide electrolyte and (d) a flow circuit configured to deliver the halogen reactant and the at least one metal-halide electrolyte to the at least one cell. The flow circuit includes an electrolyte reservoir and a halogen reactant/electrolyte separation device comprising a halophilic material. | 02-21-2013 |
20130045400 | REDOX FLOW BATTERY - Provided are a redox flow battery (RF battery) in which a positive electrode electrolyte and a negative electrode electrolyte are supplied to a battery cell including a positive electrode, a negative electrode, and a membrane, to charge and discharge the battery, and a method of operating the RF battery. The positive electrode electrolyte contains a manganese ion, or both of a manganese ion and a titanium ion. The negative electrode electrolyte contains at least one type of metal ion selected from a titanium ion, a vanadium ion, a chromium ion, a zinc ion, and a tin ion. The RF battery can have a high electromotive force and can suppress generation of a precipitation of MnO | 02-21-2013 |
20130059177 | LI-ION/POLYSULFIDE FLOW BATTERY - Li-Ion/Polysulfide flow battery systems are provided to achieve high energy density and long service life. The system is configured to minimize corrosion of the lithium electrode by providing an electrochemical reactor comprising a first and a second electrode configured in spaced apart relation defining an inter-electrode channel through which the sulfur electrolyte is caused to flow. | 03-07-2013 |
20130157087 | FLOW BATTERY SYSTEM WITH STANDBY MODE - A flow battery system includes an ON mode, and OFF mode and a STANDBY mode. The ON mode enables access to a full energy capacity of the flow battery system with regard to an amount of electric power that can be drawn from or stored to the flow battery system. The OFF mode disables access to the full energy capacity and the STANDBY mode enables access to a portion of the full energy capacity. | 06-20-2013 |
20130183551 | Liquid Reserve Batteries For Munitions - A method for producing power from a liquid reserve battery. The method including heating a liquid electrolyte and forcing the heated liquid electrolyte into gaps dispersed in a battery cell. | 07-18-2013 |
20130183552 | BATTERY PACK SYSTEM AND LIQUID LEAKAGE DETECTION METHOD THEREOF - A battery pack system and a liquid leakage detection method thereof are provided. The battery pack system comprises battery cells, a isolated liquid and a battery box containing the isolated liquid. The battery cells are soaked in the isolated liquid. The battery box is formed with a isolated liquid outlet and a isolated liquid inlet. The outlet is connected together with the inlet via a circulation pump and a liquid separation device to form a circulation passage. When electrolyte leakage occurs to any of the battery cells, the electrolyte is separated into the liquid separation device and detected by a detection component. The present disclosure encloses the leaked electrolyte into the fire-retardant isolated liquid to prevent the electrolyte from contacting with the air so as to improve the safety of the battery box body. | 07-18-2013 |
20130266829 | Fluidic Architecture for Metal-Halogen Flow Battery - A metal-halogen flow battery system includes a stack of flow cells, an electrolyte reservoir and one or more of a concentrated halogen return line fluidly connecting the stack to the reservoir, a venturi, a mixer, a concentrated halogen pump, or a concentrated halogen line heater. | 10-10-2013 |
20130316199 | ELECTROCHEMICAL BALANCE IN A VANADIUM FLOW BATTERY - A Flow Cell System that utilizes a Vanadium Chemistry is provided. The flow cell system includes a stack, storage tanks for electrolyte, and a rebalance system coupled to correct the electrolyte oxidation state. Methods of rebalancing the negative imbalance and positive imbalance in the flow cell system are also disclosed. | 11-28-2013 |
20140037999 | Battery with Low Temperature Molten Salt (LTMS) Cathode - A battery is provided with an associated method for transporting metal-ions in the battery using a low temperature molten salt (LTMS). The battery comprises an anode, a cathode formed from a LTMS having a liquid phase at a temperature of less than 150° C., a current collector submerged in the LTMS, and a metal-ion permeable separator interposed between the LTMS and the anode. The method transports metal-ions from the separator to the current collector in response to the LTMS acting simultaneously as a cathode and an electrolyte. More explicitly, metal-ions are transported from the separator to the current collector by creating a liquid flow of LTMS interacting with the current collector and separator. | 02-06-2014 |
20140038000 | Flow-Through Metal Battery with Ion Exchange Membrane - A metal flow-through battery is provided, with ion exchange membrane. The flow-through battery is primarily made up of an anode slurry, a cathode slurry, and a hydroxide (OH | 02-06-2014 |
20140044999 | Metal/Air Flow Battery - In one embodiment, a battery system includes a negative electrode, a separator adjacent to the negative electrode, a positive electrode separated from the negative electrode by the separator, the positive electrode including an electrode inlet and an electrode outlet, an electrolyte including about 5 molar LiOH located within the positive electrode, and a first pump having a first pump inlet in fluid communication with the electrode outlet and a first pump outlet in fluid communication with the electrode inlet and controlled such that the first pump receives the electrolyte from the electrode outlet and discharges the electrolyte to the electrode inlet during both charge and discharge of the battery system. | 02-13-2014 |
20140057140 | Reduction of Water Transfer Across Membrane - A method of operating a redox flow battery includes a step of observing a difference in relative volume between the anolyte fluid volume and the catholyte fluid volume. The ionic molality of anolyte fluid is increased if the relative volume of the anolyte fluid decreases. A redox flow battery having balanced anolyte and catholyte initial ionic molalities is also provided. | 02-27-2014 |
20140057141 | PRESSURE BALANCING OF ELECTROLYTES IN REDOX FLOW BATTERIES - Methods and apparatuses are disclosed for mitigating electrolyte migration in a redox flow battery system. A first parameter of a first electrolyte in a first flow path of a redox flow battery cell block may be measured. The first flow path may have an inlet to and an outlet from the redox flow battery cell block. A second parameter of a second electrolyte in a second flow path of the redox flow battery cell block may be measured. The second flow path may have an inlet to and an outlet from the redox flow battery cell block. The first parameter may be detected to be greater than the second parameter. A first device coupled to the redox flow battery cell block in the second flow path may be operated to increase the second parameter in the second flow path. | 02-27-2014 |
20140141291 | Hybrid Anodes for Redox Flow Batteries - RFBs having solid hybrid electrodes can address at least the problems of active material consumption, electrode passivation, and metal electrode dendrite growth that can be characteristic of traditional batteries, especially those operating at high current densities. The RFBs each have a first half cell containing a first redox couple dissolved in a solution or contained in a suspension. The solution or suspension can flow from a reservoir to the first half cell. A second half cell contains the solid hybrid electrode, which has a first electrode connected to a second electrode, thereby resulting in an equipotential between the first and second electrodes. The first and second half cells are separated by a separator or membrane. | 05-22-2014 |
20140193673 | POLARITY SWITCHING FLOW BATTERY SYSTEM AND METHOD - A flow battery system and method are provided. The flow battery system may include a feed system feeding positive electrolyte from a first storage tank to a positive inlet of a battery stack and negative electrolyte from a second storage tank to a negative inlet of the battery stack, a return system returning charged electrolyte from the battery stack to the first and second storage tanks, and a controller to selectively control at least one of the feed system and the return system so positive electrolyte, from the first storage tank, is applied a negative charge by the battery stack and then returned by the return system to the second storage tank, and so negative electrolyte, from the second storage tank, is applied a positive charge by the battery stack and then returned by the return system to the first storage tank. | 07-10-2014 |
20140255734 | RESERVOIR FOR MULTIPHASE ELECTROLYTE FLOW CONTROL - A flow battery reservoir includes a reservoir housing, an electrolyte inlet configured to provide an electrolyte mixture containing a liquid metal-halide electrolyte solution and a complexed halogen phase at or toward a stagnant zone in a lower portion of the reservoir, and an electrolyte outlet configured to outlet the liquid metal-halide solution from the reservoir. The electrolyte outlet is positioned such that in use the liquid metal-halide solution flows upward against the force of gravity to reach the electrolyte outlet while the complexed halogen phase settles in the stagnant zone. | 09-11-2014 |
20140272483 | Systems and Methods for Rebalancing Redox Flow Battery Electrolytes - Various methods of rebalancing electrolytes in a redox flow battery system include various systems using a catalyzed hydrogen rebalance cell configured to minimize the risk of dissolved catalyst negatively affecting flow battery performance. Some systems described herein reduce the chance of catalyst contamination of RFB electrolytes by employing a mediator solution to eliminate direct contact between the catalyzed membrane and the RFB electrolyte. Other methods use a rebalance cell chemistry that maintains the catalyzed electrode at a potential low enough to prevent the catalyst from dissolving. | 09-18-2014 |
20140272484 | ELECTROCHEMICAL CELL STACK HAVING A PROTECTIVE FLOW CHANNEL - Disclosed herein are improved electrochemical cell stacks having at least one protective channel on an end of the stack. Redox flow batteries (RFBs) containing the “protected” electrochemical cell stacks, and methods of operating such RFBs, are also provided. | 09-18-2014 |
20140272485 | Flow Batteries with Modular Arrangements of Cells - A modular arrangement of cells that enables adjustments in cell currents in response to changes in concentration of the redox reactants. The adjustments improve battery efficiency by more closely matching the current in a given cell to the rate at which reactants are supplied to that cell. The cell modules provide the flexibility to operate flow batteries efficiently over a wide range of electrolyte states of charge and allow managed scale-up while easing manufacturability concerns. | 09-18-2014 |
20140308547 | Fluidic Architecture for Metal-Halogen Flow Battery - A metal-halogen flow battery system includes a stack of flow cells, an electrolyte reservoir and one or more of a concentrated halogen return line fluidly connecting the stack to the reservoir, a venturi, a mixer, a concentrated halogen pump, or a concentrated halogen line heater. | 10-16-2014 |
20140363707 | HIGH PERFORMANCE FLOW BATTERY - 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. | 12-11-2014 |
20140370335 | CONSIST HAVING SHARED ELECTROLYTE TANKS - A system for distributing energy among a plurality of power consumers may include a plurality of reaction cells configured to receive electrolytes and provide electric power. The system may also include a first tank configured to contain a supply of fluid including positively charged electrolytes and a second tank configured to contain a supply of fluid including negatively charged electrolytes. The system may also include at least one pump configured to pump fluid among the plurality of reaction cells and the first and second tanks. The system may include a controller configured to control operation of the at least one pump based on a desired power supply to at least one of the plurality of power consumers. | 12-18-2014 |
20150303524 | ELECTROCHEMICAL STORAGE OF THERMAL ENERGY - The invention relates to an energy conversion and storage system and a method wherein a battery catholyte composition (e.g., following or during a discharge process) is decomposed by heating to produce a decomposed catholyte and separate an anolyte component therefrom, thereby enabling use of the anolyte component and a remainder of the decomposed catholyte in anodic and cathodic half-cells of an electrochemical energy storage device. | 10-22-2015 |
20160064757 | FLOW CELL WITH SHUNT CURRENT COUNTER ELECTRODE - Counter electrodes are used within the context of a flow cell to attract shunt current depositions during operation. The counter electrodes may be electrically connected with an anode of the flow cell to attract the depositions and then electrically connected with a cathode of the flow cell to remove the depositions. | 03-03-2016 |
20160111706 | Flowing Electrolyte Battery and Method of Controlling a Flowing Electrolyte Battery - A flowing electrolyte battery can be quickly and safely electrically stripped using electrolyte. The battery includes: a stack comprising a plurality of electrodes; a negative electrolyte circuit coupled to the stack, for circulating negative electrolyte through the stack; a positive electrolyte circuit coupled to the stack, for circulating positive electrolyte through the stack; and a valve coupling the positive electrolyte circuit and the negative electrolyte circuit. The valve includes a closed configuration that prevents flow of electrolyte between the positive electrolyte circuit and the negative electrolyte circuit, and an open configuration that enables flow of electrolyte from at least one of the positive electrolyte circuit and the negative electrolyte circuit to the other of the positive electrolyte circuit and the negative electrolyte circuit. The valve is opened and closed by changes in pressure differences between the positive and the negative electrolyte circuits. | 04-21-2016 |
20160190628 | LAMINAR FLOW BATTERY - An electrochemical cell is disclosed. The cell comprises a substrate with an elongate channel formed therein; first and second electrodes extending longitudinally in the channel and disposed to opposite sides of the channel; and three fluid ports at each end of the channel for ingress and egress of respective fluids, wherein three fluids entering into the channel through respective fluid ports at one end flow through the channel in parallel laminar streams and exit the channel through the respective ports at the other end. One of the fluids is disposed between the other two fluids in the channel, and facilitates diffusion of ions to and from those other two fluids. One or more of the cells may be used as part of a flow battery. Also described is a method for manufacturing the electrochemical cell. The battery may be used to power an electric vehicle. | 06-30-2016 |
20180026293 | FLOW BATTERY | 01-25-2018 |
20190148804 | HYBRID AIR-SLURRY FLOW CELL BATTERY | 05-16-2019 |