106results about "Indirect fuel cells" patented technology

The present invention refers to a redox battery, to a method of storing electricity comprising the redox battery, to a method of delivering electricity comprising the redox battery, an energy storage and / or delivery system, and to the use of the redox battery or the energy system to store or deliver electricity.

The present disclosure relates to organic electrolyte solutions including organic electrolytes (e.g., aromatic imides, ferrocenes, spiro fused compounds, or cyclopropenium compounds), and redox flow batteries and systems including the same.

The present disclosure relates to organic electrolyte solutions including organic electrolytes (e.g., aromatic imides, ferrocenes, spiro fused compounds, or cyclopropenium compounds), and redox flow batteries and systems including the same.

The invention relates to an ion exchange liquid membrane flow battery. The ion exchange liquid membrane separates the catholyte and anolyte by independently stratifying with the catholyte and anolyte, it dissolves the supporting solute but does not dissolve active material in the catholyte and anolyte. The present invention uses the ion exchange liquid membrane to replace the traditional ion exchange solid membrane, solving the problems of high cost and short life of the latter. In addition, the technical solution of the present invention has significant advantages in preventing the crossover of active material due to the adjustable thickness of the ion exchange liquid membrane. Moreover, the technical solution of the present invention can flexibly match all kinds of acidic, neutral, alkaline aqueous or organic catholyte with anolyte according to application requirements, solving the problem of limited catholyte-anolyte match in a conventional flow battery. Furthermore, the technical solution of the present invention is advantageous for multi-cell assembly and large-scale application as the ion exchange liquid membrane has no fixed shape.

The present disclosure relates to organic electrolyte solutions including organic electrolytes (e.g., aromatic imides, ferrocenes, spiro fused compounds, or cyclopropenium compounds), and redox flow batteries and systems including the same.

The present application relates to a method for recovering an aqueous positive electrode electrolyte of a redox flow battery to be recovered, said aqueous positive electrode electrolyte comprising at least one electroactive compound comprising at least one oxidized or reduced form of a reduction / oxidation pair and an aqueous solvent, the invention relates to a method for producing an electroactive compound, the reduced form of which is a water-soluble organometallic complex, characterized in that the method comprises:-a step (300) of precipitating the electroactive compound, thereby obtaining a suspension,-a step (400) of separating the suspension, thereby obtaining a solid residue (52) and an effluent (54), and-a step (600) of drying the solid residue (52), comprising heating the solid residue (52) to a temperature lower than or equal to 40 DEG C, preferably lower than or equal to 35 DEG C, more preferably lower than or equal to 30 DEG C, further preferably lower than or equal to 25 DEG C, thereby obtaining a recovered electroactive compound.

The present invention relates to redox flow battery system. In particular, the present invention relates to low-cost Zinc-polyiodide redox flow battery (ZIFBs) with a low-cost electrolyte additive and a composite membrane comprising a microporous membrane and a cation conducting membrane.

Conventional redox flow batteries can be limited by the solubility of raw materials that are used to form the negolyte. Disclosed herein are methods for improving the solubility of negolyte raw materials, by conversion to more soluble compounds that retain a desired reactivity with negolyte reagents under operating conditions.

The present invention relates to the synthetic functionalization of an anthraquinone molecule substituted with at least one hydroxyl or amino group. In some aspects of the invention, a mixture containing the anthraquinone starting material, an aldehyde, a base, an optional solvent, and an optional catalyst is reacted with hydrogen, and then with an oxidizing agent. In other aspects of the invention, the synthetic functionalization of the anthraquinone molecule is carried out electrochemically, rather than chemically, using a divided electrolytic cell.

The present invention relates to a method for recycling an aqueous posolyte of a redox flow battery to be recycled, the aqueous posolyte comprising at least one electroactive compound and an aqueous solvent, the electroactive compound comprising at least one oxidized or reduced form of a reducing / oxidising couple, the reduced form of the reducing / oxidising couple being a water-soluble organometallic complex, characterised in that the method comprises: - a step of precipitating (300) the electroactive compound, whereby a suspension is obtained, - a step of separating (400) the suspension, whereby a solid residue (52) and an effluent (54) are obtained, and - a step of drying (600) the solid residue (52), comprising heating the solid residue (52) to a temperature of less than or equal to 40°C, preferably less than or equal to 35°C, preferably less than or equal to 30°C, more preferably less than or equal to 25°C, whereby a recycled electroactive compound is obtained.

As a crystalline oxide, "A x (M 2 TO 8 ) y " wherein A is a cation having a +1 oxidation state, M is a cation having a +4, +5, or +6 oxidation state, T is a cation having a +4, +5, or +6 oxidation state, x and y are real numbers that are independent of one another and greater than 0, and x is less than or equal to 3y, and the ion-conducting solid electrolyte compound has high ionic conductivity and low electronic conductivity.

The invention relates to a redox cell, a method for storing power comprising a redox cell, a method for delivering power comprising a redox cell, an energy storage and / or delivery system, and the use of a redox cell or an energy system for storing or delivering power.

The present invention relates to a method for recycling an aqueous electrolyte of a redox flow battery to be recycled, the aqueous electrolyte comprising at least one electroactive compound and an aqueous solvent, the electroactive compound being at least one oxidized or reduced form of a reducing / oxidizing couple, the oxidized form of which is a compound comprising a quinone unit, for example a benzoquinone unit, a naphthoquinone unit or an anthraquinone unit, preferably an anthraquinone unit, characterized in that it comprises a step of precipitating (300) the electroactive compound.

An apparatus for electrolysing seawater to produce hydrogen is disclosed. The apparatus comprises a unipolar electrolytic cell configured to operate in cathode-cathode mode and configured to reduce th

The invention provides batteries, e.g., flow batteries, and methods of cycling the batteries that reduce loss of capacity. The loss of capacity of may be mitigated by employing a mixture of redox active species.

There is provided a VRFB commissioning subsystem and process to purify a VRFB electrolyte on-site. In an embodiment, a conventional VRFB system is combined with a novel portable commissioning system for preparing and provisioning a purified electrolyte solution to the VRFB. This on-site purification is especially synergistic with shipping of electrolyte as a gel since the electrolyte can be produced in a densified form and not diluted with water until it is on site.

An electrolyte solution and an all-vanadium redox flow battery are disclosed. The electrolyte solution includes: a positive electrode electrolyte solution and a negative electrode electrolyte solution, the positive electrode electrolyte solution and the negative electrode electrolyte solution include chloride ions, sulfate ions and vanadium ions; both the positive electrode electrolyte solution and the negative electrode electrolyte solution satisfy: 2.9≤[c(Cl-)+c(SO42-)] / c(Vn+)≤3.6; the c(Cl-) represents a concentration of the chloride ions, the c(SO42-) represents a concentration of the sulfate ions, and the c(Vn+) represents a concentration of the vanadium ions. When Cl-, SO42- and Vn+ in the electrolyte solution meet the appropriate concentration relationship, the Cl2 production rate can be greatly reduced, thereby reducing the corrosion of battery materials. A small amount of Cl2 evolved can compensate for the oxidation of the battery electrode carbon felt, and protect the electrode carbon felt and reduce the risk level of chlorine-containing electrolytes operation environmental.

To provide a flow battery system, a battery monitoring device for the flow battery system, an electrode element for the battery monitoring device, and a manufacturing method therefor.SOLUTION: A battery monitoring device includes a positive electrode end plate, a positive electrode element that penetrates the positive electrode end plate and includes an electrode bar and a signal transmission portion protruding from the outer surface of the positive electrode end plate, a negative electrode end plate, a negative electrode element that penetrates the negative electrode end plate and includes an electrode bar and a signal transmission portion protruding from the outer surface of the negative electrode end plate, an electrolyte supply flow path, an electrolyte drainage flow path, a separator between the positive electrode end plate and the negative electrode end plate, and a voltage measurement unit.SELECTED DRAWING: Figure 2A

A method for producing hydrogen from an aqueous solution containing hydrochloric acid in dissociated form, in which at least one electrode is present, made of a metal alloy containing a plurality of metals having different standard reduction potentials, the method comprising the steps of reducing hydronium ions present in the aqueous solution to hydrogen as a result of electrons generated in the electrode flowing between the metal pair from the metal with the lower potential to the metal with the higher potential, and removing the resulting hydrogen from the aqueous solution.

The invention relates to an ion exchange liquid membrane flow battery. The ion exchange liquid membrane separates the catholyte and anolyte by independently stratifying with the catholyte and anolyte, it dissolves the supporting solute but does not dissolve active material in the catholyte and anolyte. The present invention uses the ion exchange liquid membrane to replace the traditional ion exchange solid membrane, solving the problems of high cost and short life of the latter. In addition, the technical solution of the present invention has significant advantages in preventing the crossover of active material due to the adjustable thickness of the ion exchange liquid membrane. Moreover, the technical solution of the present invention can flexibly match all kinds of acidic, neutral, alkaline aqueous or organic catholyte with anolyte according to application requirements, solving the problem of limited catholyte-anolyte match in a conventional flow battery. Furthermore, the technical solution of the present invention is advantageous for multi-cell assembly and large-scale application as the ion exchange liquid membrane has no fixed shape.

A redox flow battery system includes a battery cell that performs charge-discharge by supplying an electrolyte; a monitor cell to which the electrolyte is supplied; a voltmeter that measures an open circuit voltage of the monitor cell; a thermometer that measures a liquid temperature of the electrolyte; and a controller that controls the charge-discharge of the battery cell based on the open circuit voltage, and the controller corrects the open circuit voltage in accordance with the liquid temperature.

The present invention provides a cell membrane comprising: an ion exchange membrane comprising at least one first polymer exhibiting acidic functional groups A; and a fabric, wherein the fabric comprises fibers, and wherein the surface of the fibers exhibits basic functional groups C, and wherein the fabric supports the ion exchange membrane. The present invention also provides a method for manufacturing the disclosed cell membrane, a device comprising the disclosed cell membrane, and a use of the disclosed cell membrane in an electrodialysis cell, in a fuel cell, in a PEM electrolyzer, or in a redox flow battery.

Disclosed herein are a metal-air fuel cell metal source material, a composite material comprising a metal selected from an alkali metal, an alkaline earth metal, aluminium, zinc, or iron, a conductive carbon material, and a binder, a redox-mediated metal-air fuel cell cartridge comprising a cartridge housing, and a composite material comprising a metal selected from an alkali metal, an alkaline earth metal, aluminium, zinc, or iron, a conductive carbon material, and a binder, and a redox-mediated metal-air fuel cell system comprising a redox flow cell and a first tank suitable to house an anolyte and a redox-mediated metal-air fuel cell cartridge. Also disclosed herein is a method of feeding a metal in a redox-mediated metal-air fuel cell system.

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.

The present invention relates to the synthetic functionalization of anthraquinone molecules that are substituted with at least one hydroxyl or amino group. In some aspects of the invention, the synthetic functionalization of the anthraquinone molecules occurs electrochemically rather than chemically by using a split electrolytic cell. JPEG2024506445000006.jpg55170

The present application discloses a vanadium-chromium electrolyte, a method for producing the same, and a flow battery comprising the same. The vanadium-chromium electrolyte contains an active material and a free acid, which ionizes to become a proton conductive agent, and the active material contains at least vanadium ions and chromium ions. The present application also discloses a method for producing the vanadium-chromium electrolyte, which includes the steps of dissolving a vanadium compound in the free acid and filtering to obtain a mixed solution of the free acid and vanadium ions, electrolytically reducing vanadium to an average valence of 3.5 to 4, adding a chromium compound, stirring and dissolving, and filtering, and adding water and auxiliary reagents and adjusting the concentration to prepare the vanadium-chromium electrolyte. The vanadium-chromium electrolyte of the present application has the advantages of high vanadium utilization, high energy density, and low watt-hour cost. When applied to a flow battery, it can improve the energy density of the solution and reduce battery costs.

A device for electrolyzing seawater to produce hydrogen is disclosed. The device includes a single-pole electrolytic cell configured to operate in a cathode-cathode mode and configured to reduce the production of chlorine and / or oxygen.

The invention provides batteries, e.g., flow batteries, and methods of cycling the batteries that reduce loss of capacity. The loss of capacity of may be mitigated by employing a mixture of redox active species.

The invention relates to the synthetic functionalization of an anthraquinone molecule that is substituted with at least one hydroxyl or amino group. In some aspects of the invention a mixture containing said anthraquinone starting material, an aldehyde, a base, an optional solvent, and an optional catalyst is reacted with hydrogen and then with an oxidant. In other aspects of the invention the synthetic functionalization of the anthraquinone molecule takes place electrochemically rather than chemically, through the use of a divided electrolytic cell.

There is provided a VRFB commissioning subsystem and process to purify a VRFB electrolyte on-site. In an embodiment, a reference VRFB system is combined with a portable commissioning system for preparing and provisioning a purified electrolyte solution to the VRFB. This on-site purification is especially synergistic with shipping of electrolyte as a gel since the electrolyte can be produced in a densified form and not diluted with water until it is on site.