45results about "Electrolyte holding means" patented technology

Provided is a hydroxide ion-conducting separator excellent in alkali resistance and capable of further effectively suppressing short circuiting caused by zinc dendrites. The LDH compound separator includes a porous substrate made of a high molecular material and a layered double hydroxide (LDH) compound that seals the pores of the porous substrate. The average porosity of the central portion in the thickness direction of the LDH compound separator is lower than the average porosity of the portion near the surface of the LDH compound separator.

Embodiments described herein include systems and methods for managing electrical power among various energy generation, storage, and consumption systems, including micro-grids or nano-grids. Computing systems and electrical hardware send and receive electrical power, to or from various energy storage, transfer, and consumption sites, particularly where certain nano-grids are not electrically wired to the energy generation and storage subsystems. A grid adapter receives energy from various sources, reduces noise in the electrical waveform (e.g., harmonics), and determines an amount of power to deliver to nano-grids via electrical connections or delivery vehicles to achieve acceptable operation according to grid codes or other operational configurations. A storage system may include a flow battery that exchanges electricity, based on required power or surplus power, with delivery vehicles according to an electrolyte swap for the flow battery.

A cell frame (4) for forming an electrochemical cell (2), particularly for a redox flow battery, is described and illustrated. The cell frame (4) circumscribes at least one cell interior (5) and includes at least one feed channel (13) for feeding electrolyte into the cell interior (5). The feed channel (13) has an inlet opening (18) separated from the cell interior (5) for the fed electrolyte and an outlet opening (19) adjacent to the cell interior (5) for allowing the fed electrolyte to flow out into the cell interior (5). To enable increased power density, the feed channel (13) has at least one transport channel (21) at least partially connecting the inlet opening (18) to the outlet opening (19) for transporting electrolyte into the cell interior (5) via the feed channel (13), and at least one return channel (22) for partially returning the fed electrolyte in a direction opposite to the transport direction (T) of the fed electrolyte in the transport channel (21). Each return channel (22) is in fluid contact with a transport channel (21) via at least one inlet opening (25) for the inflow of the returned electrolyte and an outlet opening (26) for the outflow of the returned electrolyte, said openings being spaced apart from one another in the transport direction (T) of the delivered electrolyte.

To provide a technique that can prevent a polymer electrolyte from peeling off from a support film even when the polymer electrolyte with a large thickness swells.SOLUTION: A polymer electrolyte 91 with a thickness of 50 μm or more is supported by a support film 92. The support film 92 has a base film 921 and an adhesive layer 922. The adhesive layer 922 covers one side of the base film 921. The thickness of the base film 921 is between 50 μm and 300 μm. When the adherend is a PET film, the adhesive strength of the adhesive layer, according to the test method of JISZ0237, is 0.05 N / cm or more.SELECTED DRAWING: Figure 1

Provided is a hybrid battery pack including a plurality of battery modules (100) disposed side by side, and a redox flow battery (200) disposed at one side of the plurality of battery modules (100), wherein an electrolyte path along which an electrolyte circulating in the redox flow battery (200) flows is disposed between the plurality of the battery modules (100).

Described and illustrated is a cell frame for forming an electrochemical cell, in particular of a redox flow battery, peripherally enclosing at least one cell interior and including at least one feed channel for feeding electrolyte into the cell interior, wherein the feed channel has an inlet opening, spaced from the cell interior, for the electrolyte to be fed and an outlet opening, adjacent to the cell interior, for the electrolyte to be fed to flow out into the cell interior. In order that the power density can be increased, it is provided that the feed channel has at least one transport channel, connecting at least in sections the inlet opening with the outlet opening, for transporting the electrolyte through the feed channel into the cell interior and at least one return channel for partially returning the electrolyte to be fed counter to the transport direction (T) of the electrolyte to be fed in the transport channel, in that the return channel is in fluid contact with the transport channel via in each case at least one entry opening for entry of the electrolyte to be returned and exit opening for exit of the electrolyte to be returned, spaced from one another in the transport direction (T) of the electrolyte to be fed.

A fluid container (3) is provided with a first metal member (31), a second metal member (32), and an adhesive section (34). The first and second metal members (31, 32) contain chromium. The adhesive section (34) is configured from an oxide having chromium as the main component. The adhesive section (34) adheres the first metal member (31) and the second metal member (32) to each other. The adhesive section (34) has a base section (341) and a convex section (342). The protruding portion (342) protrudes from the base portion (341) in the thickness direction.

Disclosed is a zero-gap electrochemical cell structure that employs molecular-level capillary, diffusion, and / or osmotic effects to minimize the need for macroscopic external management of the electrochemical cell. Preferably, these effects are inherently responsive to conditions in the electrochemical cell, making it self-regulating. In one example, an electrosynthesis or electric energy cell and method of operation are disclosed that includes a reservoir for containing a liquid electrolyte, a first gas diffusion electrode located outside the reservoir, and a second electrode located outside the reservoir. A porous capillary spacer is located between the first gas diffusion electrode and the second electrode, the porous capillary spacer having an end that extends into the reservoir. Preferably, the porous capillary spacer is capable of filling itself with liquid electrolyte when the end of the porous capillary spacer is in liquid contact with the liquid electrolyte in the reservoir.

An electrosynthetic or electrical energy cell is disclosed that includes a first gas diffusion electrode and a second electrode. A spacer, including but not limited to a porous capillary spacer, is at least partially positioned between the first gas diffusion electrode and the second electrode. In one form, the liquid electrolyte is transferred onto a side surface of the separator beyond the electrode. In one example, a liquid electrolyte reservoir is also provided in which the first gas diffusion electrode, the second electrode, and the spacer are positioned outside the liquid electrolyte reservoir. In one example, a liquid electrolyte reservoir includes an aperture for releasing a liquid electrolyte. In another form, an intermediate liquid supply structure is located at least partially between the spacer and the liquid electrolyte reservoir, where the liquid electrolyte is transferred through the intermediate liquid supply structure. Methods of operation and cell stacks are also disclosed.

Disclosed is a zero-gap electrochemical cell structure that employs molecular-level capillary, diffusion, and / or osmotic effects to minimize the need for macroscopic external management of the electrochemical cell. Preferably, these effects are inherently responsive to conditions in the electrochemical cell, making it self-regulating. In one example, an electrosynthesis or electric energy cell and method of operation are disclosed that includes a reservoir for containing a liquid electrolyte, a first gas diffusion electrode located outside the reservoir, and a second electrode located outside the reservoir. A porous capillary spacer is located between the first gas diffusion electrode and the second electrode, the porous capillary spacer having an end that extends into the reservoir. Preferably, the porous capillary spacer is capable of filling itself with liquid electrolyte when the end of the porous capillary spacer is in liquid contact with the liquid electrolyte in the reservoir.

A redox flow battery system includes a redox flow battery and an ancillary cell that is fluidly connected to the redox flow battery. The ancillary cell includes a barrier electrolyte chamber containing a barrier electrolyte solution. The ancillary cell is designed to adjust either the state of charge or the pH of first and second electrolyte solutions in the redox flow battery.

The utility model discloses an electrolyte storage tank and a flow battery system, and the electrolyte storage tank comprises a tank body, a liquid inlet is formed in the position, close to the top, of the tank body, and a liquid outlet is formed in the position, close to the bottom, of the tank body; the liquid inlet pipe group comprises a liquid inlet guide pipe, a liquid distribution main pipe, a plurality of liquid distribution branch pipes axially distributed around the liquid distribution main pipe and a flow uniformizing pipe extending downwards, and a plurality of liquid distribution holes distributed at intervals are formed in the side face of the flow uniformizing pipe; after the electrolyte is sprayed out from the liquid distribution holes, impact force is generated and acts on the electrolyte in the tank so as to form a stirring effect; and a liquid outlet pipe. According to the utility model, an electrolyte in the tank body can be stirred, so that the electrolyte is more uniformly distributed in the tank body, and meanwhile, the electrolyte can be more uniformly distributed in the vertical direction due to the arrangement of the liquid distribution holes, so that the concentration gradient and the temperature gradient of the electrolyte are effectively relieved, and the stability of a flow battery system is further improved.

This invention discloses a battery cell structure for a hybrid solid oxide electrolytic cell stack. The battery cell structure includes a hydrogen flow channel, an oxygen flow channel, and a water vapor reaction chamber. One side of the water vapor reaction chamber is separated from the hydrogen flow channel by a proton conductor electrolyte battery; the other side of the water vapor reaction chamber is separated from the oxygen flow channel by an oxygen ion conductor electrolyte battery. The water vapor reaction chamber is filled with a porous electronic conductor, which connects the positive electrode side of the proton conductor electrolyte battery to the negative electrode side of the oxygen ion conductor electrolyte battery. The proton conductor electrolyte battery converts the water vapor in the water vapor reaction chamber into protons and generates hydrogen gas in the hydrogen flow channel. The oxygen ion conductor electrolyte battery converts the water vapor in the water vapor reaction chamber into oxygen ions and generates oxygen gas in the oxygen flow channel.

A method of regenerating a symmetrical redox flow battery includes: a first discharge process having a duration in which a capacity of the redox flow battery in a first polarity and comprising a membrane decreases from a first to a second capacity, the process comprising: flowing a catholyte through a catholyte compartment in the first polarity; flowing an anolyte through an anolyte compartment in the first polarity; wherein: the first polarity of the redox flow battery includes a membrane having a first face in fluid communication with the catholyte compartment and a second face in fluid communication with the anolyte compartment; and the first and the second faces of the membrane being opposing surfaces of the membrane; and a second discharge process comprising: reversing the polarity of the catholyte and anolyte compartments wherein: the redox flow battery in the second polarity exhibits an initial increased capacity compared to the second capacity from the first discharge process.

The invention belongs to the technical field of electrochemical energy storage, and particularly relates to a full-tenon-and-mortise flow battery electric pile structure and an assembly method thereof. The invention provides a full-tenon-and-mortise flow battery electric pile structure and an assembling method thereof in order to solve the problems of non-uniform assembly stress distribution, electric pile component dislocation, reduced sealing safety, increased leakage current, low coulombic efficiency and the like caused by large installation error of a flow battery electric pile, and provides the full-tenon-and-mortise flow battery electric pile structure and the assembling method thereof. The galvanic pile is formed by connecting a plurality of single-section components through mortises and tenons, and modular free combination and self-positioning among the components are realized through full mortise and tenon connection, so that the stress distribution uniformity among the components and the sealing property of the galvanic pile are improved, and the mounting precision and the assembly efficiency of the flow battery galvanic pile are greatly improved; and large-scale production of the redox flow battery stack is convenient to realize.

Provided are methods for fabricating ion exchange membranes. Such a method comprises exposing a polymer to an ionic functional group precursor under conditions to incorporate covalently bound ionic functional groups into the polymer, thereby providing a functionalized polymer comprising the covalently bound ionic functional groups; and forming the functionalized polymer into a membrane, thereby providing an ion exchange membrane that is permeable to some ions present in a fluid in contact with the membrane while impermeable to other ions present in the fluid. The ion exchange membranes and devices incorporating the membranes, e.g., redox flow batteries, are also encompassed by the present disclosure.

Embodiments disclosed herein comprise a wave energy converter (WEC) that includes a buoyant chamber with a tube depending from the buoyant chamber. In an embodiment, a battery is coupled to the WEC. In an embodiment, the battery includes a first tank for storing an oxidizing gas and a precursor fluid, and a second tank for storing a fuel. In an embodiment the battery further includes a fuel cell fluidically coupled to the first tank and the second tank, and a reaction pipe fluidically coupled to the first tank and the second tank.

The invention relates to an OCV battery, an application and a method, in particular to the field of flow batteries, and the OCV battery comprises three electrode chambers. By using the OCV battery provided by the invention, the open-circuit voltages of the two half batteries of the flow battery can be measured at the same time, and the open-circuit voltage of the whole battery can be calculated according to the open-circuit voltages of the two half batteries. By implementing the method, the accuracy of the measured OCV value of the flow battery can be ensured, and the battery maintenance can be reduced. And meanwhile, the process is simple, the operation is simple and convenient, the cost is low, and the long-term efficient and stable operation of the flow battery can be ensured.

A power conversion system (200A) incorporated in a flight vehicle includes a power converter (10) having a semiconductor element stored therein. An energy storage (20) is disposed above the power converter (10) in the vertical direction, the energy storage storing a solid or liquid energy source containing a neutron attenuating material. The power converter (10) is provided with a movable mechanism (60) that moves to shift in position according to a tilt of the flight vehicle. The movable mechanism includes slider rails and a slider movable unit.

The invention relates to an electrochemical device comprising: - two electrodes; - a spacer, placed between the two electrodes, made of a porous polymer material forming a continuous three-dimensional network, having a porosity greater than 70%, preferably greater than 80%, whose pores are interconnected, and possessing charged surface functional groups; - an electrolytic solution comprising a solute in the form of a dissolved salt and impregnating the pores of said spacer; - and a device D for harvesting the electrical energy generated by a potential difference existing between the two electrodes or for applying a potential difference between the two electrodes. Said device is intended for implementing an ion transfer process within said device.

Polymers for use as an Anion Exchange Membranes (AEMs) and produce an alkaline stable AEM. The multinuclear aromatic and amine-functionalized acetal (ketal) come together to form a polymer with a hydrocarbon backbone that is stable to alkaline conditions. The use of an amine-functionalized acetal allows for the incorporation of a stable cation, dimethyl piperidinium, in the most stable confirmation while avoiding incorporation of a CF3 group with every cation. The amines within the amine-functionalized polyaromatic that results from this polymerization are quaternized to form the desired cationic groups to create an AEM that is mechanically robust, conductive, and stable.

The invention discloses a proton exchange membrane capable of being subjected to laser welding and a preparation method thereof. The proton exchange membrane for laser welding is of a double-layer composite structure composed of a weldable layer and a proton exchange layer. The weldable layer is formed by calendering or melt extrusion of a mixed material, and the mixed material comprises polyolefin resin, a plasticizer, hydrophilic silicon dioxide, a coloring agent and an antioxidant; the proton exchange layer is formed by coating the surface of the weldable layer with resin slurry of non-fluorine polymer resin containing sulfonic acid groups; the proton exchange membrane can realize laser welding with the electrode plate frame, and the welding part is not cracked after being soaked in electrolyte. The membrane material provided by the invention can realize laser welding with an electrode plate frame, can improve the stability of a galvanic pile, reduces the use amount of sealing gaskets, and reduces the stacking volume and cost. Based on the synergistic effect of proton exchange and micropore screening, the membrane material has excellent proton conductivity and vanadium resistance. The membrane materials are all fluoride-free environment-friendly materials, acid and alkali resistance and low cost are achieved, and continuous batch processing can be achieved.

The invention relates to an electrochemical device comprising: - two electrodes; - a stack of membranes, disposed between the two electrodes, comprising an alternation of membranes selectively permeable to cations and membranes selectively permeable to anions, and such that each membrane is separated from a neighboring membrane by an intermembrane space, a spacer being positioned in at least one of the intermembrane spaces thus defined, said spacer being made of a porous polymer material forming a continuous three-dimensional network, having a porosity greater than 70%, preferably greater than 80%, whose pores are interconnected, and having charged surface functional groups; - an aqueous electrolytic solution comprising a solute in the form of a dissolved salt, having a pH ranging from 6 to 9 and impregnating the pores of said spacer;- and a device D for harvesting the electrical energy generated by a potential difference existing between the 2 electrodes or for applying a potential difference between the 2 electrodes.

Safety of redox flow battery systems employing CN ligand electrolytes involves preventing the production of toxic HCN during operation. Disclosed herein are systems for detecting parameters that can lead to the production of HCN when a redox flow battery is operated in a fault condition, which perform corrective actions to ensure that HCN is not formed and further to restore the redox flow battery to a normal operating condition. Also disclosed herein are methods of using the systems.

To provide a tank allowed to inhibit a substance, such as an electrolytic solution, within the tank from leaking outside.SOLUTION: A tank comprises a tank body and an inside layer laid on an inner surface of the tank body. The inside layer has a peel strength to the tank body smaller than a breaking strength of the inside layer.SELECTED DRAWING: Figure 2

In one aspect, a bipolar membrane battery comprises a separation layer disposed between an anode half-cell and a cathode half-cell, the anode half-cell having a proton exchange membrane and an anode, the proton exchange membrane being disposed between the anode and the separation layer, the cathode half-cell having an anion exchange membrane and a cathode, the anion exchange membrane being disposed between the cathode and the separation layer, and the bipolar membrane battery further comprising an external circuit connecting the anode and the cathode.

The safety of redox flow batteries systems employing CN-liganded electrolytes concerns preventing the production of poisonous HCN during operation. Systems are disclosed herein for the detection of parameters under which HCN may be produced when the redox flow batteries are operated under fault conditions, performing corrective actions to ensure HCN is not formed, and further returning the redox flow battery to a normal operating state. Methods employing the systems are also disclosed herein.

Electrochemical systems providing reversible operation of high specific energy or gravimetric energy, and high energy density or volumetric energy battery chemistries, methods of operating such systems, processes providing high energy densities and high power densities, and architectures for the successful implementation of such systems, methods and processes. A number of interconnected electrochemical reactors can be assembled to create a battery. By presenting fluidic reactants via pumping, injection and / or other circulation technologies that enable high specific energy, high utilization of reactants, and efficient thermal control, the operation of the electrochemical reactor / battery can be optimized. In a flow battery system and method for handling molten alkali metal and hydroxide species, the volume of the reactants is maximized over inactive components and thus increase energy density. Molten and gaseous reactants / products are fed to / removed from a central power conversion module from / fed to reservoirs for discharge / charge.

A tank includes a tank body and an inner layer disposed at an inner surface of the tank body, wherein peel strength of the inner layer with respect to the tank body is smaller than breaking strength of the inner layer.

A battery according to some implementations includes a first liquid electrode to undergo a first half reaction, a second liquid electrode to undergo a second half reaction, a hollow frame forming a first electrode reservoir to store the first liquid electrode and a second electrode reservoir to store the second liquid electrode, and a separating membrane coupled to the frame and disposed between the first electrode reservoir and the second electrode reservoir, wherein the frame includes an inter-electrode communication part configured to allow the first electrode reservoir and the second electrode reservoir to be in fluidic communication with each other.