32results about "Indirect fuel cells" patented technology

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.

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 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 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.

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 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.

Disclosed is a method for recovering the battery capacity of a vanadium redox flow battery, comprising: S100: determining the overall valence of vanadium ions in electrolyte reservoirs of the battery after the discharge capacity of the battery attenuates, and charging the battery; S200: adding a reducing agent to a positive electrolyte reservoir of the battery; S300: allowing self-circulation in the positive electrolyte reservoir of the battery, so as to complete a chemical reduction reaction; S400: determining the overall valence of the vanadium ions in the electrolyte reservoirs of the battery again, and determining the residue of the reducing agent; and / or S500: replenishing the reducing agent in the positive electrolyte reservoir of the battery, and repeating steps S300 to S400 until the mean value of the overall valence of the vanadium ions in the electrolyte reservoirs of the battery returns to 3.5. By means of using a liquid reducing agent, feeding is simplified, and the reaction rate of the reducing agent with a positive electrolyte having a high content of pentavalent vanadium is fast. The extent of the valence-decreasing reaction of the reducing agent and the residual amount of the reducing agent are strictly monitored, so that the risk of the performance of a stack being affected due to the residue of the reducing agent is reduced.

A multi-tier integrated power-to-ammonia system includes a converter for generating ammonia and heat through a reaction involving a compressed mixture of hydrogen and nitrogen gases. The system includes a steam generator that can generate steam using the heat from the reaction, and a reversible solid-oxide system in fluid communication with the steam generator that can separate the steam into oxygen gas and hydrogen gas.

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.

Process for recycling aqueous posolyte from a redox flow battery. The present invention relates to a process for recycling an aqueous posolyte from 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 redox couple, the reduced form of the redox couple being a water-soluble organometallic complex, characterized in that it comprises: - a precipitation step (300) of the electroactive compound, thereby obtaining a suspension, - a separation step (400) of the suspension, thereby obtaining a solid residue (52) and an effluent (54), and - a drying step (600) of the solid residue (52), comprising heating the solid residue (52) to a temperature less than or equal to 40°C, preferably less than or equal to 35°C, preferably less than or equal to at 30°C,more preferably less than or equal to 25°C, by which a recycled electroactive compound is obtained. Figure for the abbreviation: Figure 1,

A cell stack is in which a plurality of battery cells are stacked, including an electrode of a porous body, and a bipolar plate facing the electrode, in which the bipolar plate includes an introduction portion of an electrolyte, a discharge portion of the electrolyte, and a plurality of first grooves extending from a side at which the introduction portion is disposed toward a side at which the discharge portion is disposed, each of the plurality of first grooves allows the electrolyte in each of the plurality of first grooves flow toward the discharge portion, R2 / R1 is 7×10−11 or more and 2×10−4 or less, R1 is a permeation resistance indicating a difficulty of a flow of the electrolyte in the electrode, and R2 is a permeation resistance indicating the difficulty of the flow of the electrolyte in each of the plurality of first grooves.

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 invention relates to Redox flow battery comprising at least one electrochemical cell (CEC), a further electrochemical cell (SEC), an electrode disposed or arranged within each electrochemical half-cell, an ion-exchange membrane separating the two electrochemical half-cells of each electrochemical cell and circulating means arranged to circulate a first electrolytic media intended to be received in the battery through an electrochemical half-cell (FCEHC) of each of the at least one electrochemical cell and through an electrochemical half-cell (FSEHC) of the further electrochemical cell. One electrochemical half-cell (SSEHC) of SEC comprises at least one redox couple My / Mx insoluble in a second electrolytic media intended to be received in the SSEHC, according to formula 1 My + pe- ↔ Mx, formula 1, wherein x and y are oxidation number. The FSEHC is arranged to reduce an oxidized state Cb to a reduced state Cc, and conversely, of at least one redox couple Cb / Cc comprised in the first electrolytic media according to formula 2 Cb + ne- ↔ Cc, formula 2, wherein b and c are oxidation number. An absolute potential difference |ΔE1| between a redox potential E(Cb / Cc) of the at least one couple Cb / Cc, in a given or predetermined first electrolytic media, and a redox potential E(My / Mx) of the at least one couple My / Mx, in a given or predetermined second electrolytic media, is lower than or equal to 0.8 V.

The present invention provides a separator. More particularly, the present invention provides a multi-layered separator comprising a base layer, an optional middle layer, a top layer and an optional surface layer. Further, the present invention provides that the top layer is a polymer composite layer, wherein the polymer composite layer comprises non-functionalized or functionalized polymers, a nanomaterial, and an inorganic salt. The present invention also provides a process of preparation of the said multi-layered separator.

A redox flow battery system comprising a battery cell that charges and discharges through supply of an electrolytic liquid, a monitor cell to which the electrolytic liquid is supplied, a voltmeter that measures the open voltage of the monitor cell, a thermometer that measures the liquid temperature of the electrolytic liquid, and a control unit that controls the charging and discharging of the battery cell on the basis of the open voltage, the control unit correcting the open voltage in accordance with the liquid temperature.

The invention relates to Redox flow battery comprising at least one electrochemical cell (CEC), a further electrochemical cell (SEC), an electrode disposed or arranged within each electrochemical half-cell, an ion-exchange membrane separating the two electrochemical half-cells of each electrochemical cell and circulating means arranged to circulate a first electrolytic media intended to be received in the battery through an electrochemical half-cell (FCEHC) of each of the at least one electrochemical cell and through an electrochemical half-cell (FSEHC) of the further electrochemical cell. One electrochemical half-cell (SSEHC) of SEC comprises at least one redox couple My / Mx insoluble in a second electrolytic media intended to be received in the SSEHC, according to formula (1), wherein x and y are oxidation number. The FSEHC is arranged to reduce an oxidized state Cb to a reduced state Cc, and conversely, of at least one redox couple Cb / Cc comprised in the first electrolytic media according to formula (2), wherein b and c are oxidation number. An absolute potential difference |ΔE1| between a redox potential E(Cb / Cc) of the at least one couple Cb / Cc, in a given or predetermined first electrolytic media, and a redox potential E(My / Mx) of the at least one couple My / Mx, in a given or predetermined second electrolytic media, is lower than or equal to 0.8 V.

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 an oxidized or reduced form of a redox couple, the oxidized form of which is a compound comprising a quinone unit, for example a benzoquinone unit, naphthoquinone unit or anthraquinone unit, preferably an anthraquinone unit, characterized in that it comprises a step (300) of precipitating the electroactive compound.

The aim of the invention is to improve the seal between an elastomeric end frame (20) and the adjacent stack frame (3) of a cell stack (4) of a redox flow battery. This is achieved in that a first sealing element (25), which extends along the circumference of the end frame (20) and is closed in the circumferential direction and which is raised from a first end surface (24) of the end frame (20), is molded on the end frame (20) on the side of a depression (22) for receiving a current collector (21) on the first end surface (24) of the end frame (20).

A vanadium-chromium electrolyte, a method for preparing the same, and a redox flow battery composed thereof are provided. The vanadium-chromium electrolyte includes active substances and a free acid, the free acid acts as a proton conductive agent after ionization, and the active substances contain at least vanadium ions and chromium ions. The present disclosure further provides the method for preparing the vanadium-chromium electrolyte, which includes the following steps: dissolving a vanadium compound with a free acid, and obtaining a mixed solution of the free acid and vanadium ions through filtering; electrolytically reducing vanadium to an average valence state of 3.5 to 4 valence; adding a chromium compound, dissolving through stirring, and implementing a filtering; and adding pure water and an auxiliary reagent to adjust concentration, and preparing the vanadium-chromium electrolyte.

A battery system comprising a sealed aqueous flow battery that employs a passive, in-tank electrolyte recombination system. The recombination system allows for electrolyte stabilization in batteries where hydrogen evolution may occur as a side reaction without the need to use any externally-supplied rebalancing reactants. The system is a passive system that does not require a control system, additional pumps, or pumping energy.

The invention relates to a redox flow battery, to an energy storage system including said redox flow battery, as well as to methods for delivering and / or storing electricity by means of said redox flow battery.

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 an oxidized or reduced form of a redox couple, the reduced form of the redox couple being a water-soluble organometallic complex, characterised in that it comprises:a step to precipitate (300) the electroactive compound, whereby a suspension is obtained,a step to separate (400) the suspension, whereby a solid residue (52) and an effluent (54) are obtained, anda step to dry (600) the solid residue (52), comprising heating the solid residue (52) to a temperature lower than or equal to 40° C., preferably lower than or equal to 35° C., more preferably lower than or equal to 30° C., further preferably lower than or equal to 25° C., whereby a recycled electroactive compound is obtained.

The present invention relates to the synthetic functionalization of anthraquinone molecules 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, optionally a solvent, and optionally a catalyst is reacted with hydrogen and then with an oxidizing agent. In other aspects of the invention, the synthetic functionalization of the anthraquinone molecules is carried out electrochemically, rather than chemically, by using separated electrolytic cells.

To realize synthetic functionalization of anthraquinone molecules substituted with at least one hydroxyl group or amino group.SOLUTION: According to part of embodiments of the present invention, synthetic functionalization of anthraquinone molecules occurs not chemically but electrochemically by using a divided electrolytic tank.SELECTED DRAWING: Figure 2

Bipolar plate electrode arrangement used in a redox flow battery stack, comprising a bipolar plate (140) made of a thermoplastic resin, Electrodes (170A, 170B) are arranged on opposite sides of the bipolar plate (140), wherein the electrodes (170A, 170B) are thermally compressed at a central section of the bipolar plate (140) so that they penetrate the bipolar plate (140), and Fiber mats (150A, 150B), wherein a size of the bipolar plate (140) is larger than a size of the electrodes (170A, 170B), the bipolar plate (140) has a periphery (141) which is outside the electrodes (170A, 170B), the fiber mats (150A, 150B) are hot-pressed so that they penetrate into the periphery (141) of the bipolar plate (140), and the intruded fiber mats (150A, 150B) have a shape that has an inner opening, and the outer size of the fiber mats (150A, 150B) is equal to the outer size of the bipolar plate (140) and the size of the inner opening is smaller than the outer size of the electrodes (170A, 170B).

In one aspect, an apparatus and a method for monitoring a hydrogen storage system of a vehicle to always monitor the hydrogen storage system of the vehicle are provided. The apparatus comprises a first temperature sensor that measures an internal temperature of a hydrogen tank, a second temperature sensor that measures an outdoor temperature, a comparator that determines whether a hydrogen leak occurs based on the result of comparing the internal temperature with the outdoor temperature and outputs a wake-up signal, and a controller that performs failure diagnosis of a hydrogen storage system, when receiving the wake-up signal.

Conventional redox flow batteries may be limited by the solubility of the raw materials used to produce Negolite. This specification describes a method for improving the solubility of Negolite raw materials by converting them into more soluble compounds that also exhibit the desired reactivity with Negolite reagents under operating conditions.

A multi-layer integrated electro-ammonia conversion system includes a converter for generating ammonia and heat by reaction of a compressed mixture involving hydrogen and nitrogen. The system includes a steam generator that can generate steam using the heat from the reaction, and a reversible solid oxide system in fluid communication with the steam generator that can separate the steam into oxygen and hydrogen.