37 results about "Ion-permeable membranes" patented technology

A problem to be solved by the present invention is to provide an ion exchange membrane that can increase the surface area of a membrane effective for ion permeation, properly decreases the electric resistance of a flow passage between membranes and the attachment of a contaminating substance thereto, also enhances the mechanical strength of the membrane itself, and further, is less deformed or damaged due to swelling over a wide range of salt concentrations and even if there is a large difference in salt concentration between two solutions contacted with the membrane. The present invention provides an ion exchange membrane having a concavo-convex shape, wherein the ion exchange membrane has a flat portion in the vicinity of ends, and a convex curve and a concave curve resulting from curvatures of the ion exchange membrane itself form a convex part and a concave parts, respectively, in the concavo-convex shape of the ion exchange membrane, wherein the convex part extends linearly or curvedly, the concave part between the convex parts is flat, the concave part includes a first concave part adjacent to the convex part in the lateral direction of the convex part, along the longitudinal direction of the convex part, the convex part has an apex and a side face in the longitudinal direction, and the side face is inclined from the apex toward the first concave part.

The present disclosure provides a fuel cell comprising at least one fuel cell plate. Each fuel cell plate includes at least one first insulating layer, at least one ion permeable membrane, and a plurality of anodes and a plurality of cathodes. All cathodes are disposed across a first surface of the ion permeable membrane and all anodes are disposed across a second surface of the ion permeable membrane opposite the first surface. At least one material property of the anode or the cathode or a size of the anode or a size of the cathode varies or varies across the fuel cell plate, and / or at least one material property of another component of the fuel cell plate varies or varies across the fuel cell plate. A pair of anodes and cathodes across at least one ion permeable membrane may be electrically connected in parallel with an adjacent pair of anodes and cathodes.

The present application provides an electrochemical device and a preparation method therefor, and an electronic device. The electrochemical device comprises an electrode assembly and an electrolyte, the electrode assembly comprises a positive electrode sheet, a negative electrode sheet and a selective lithium-ion permeable membrane, a positive electrode side and a negative electrode side that are independent from each other are formed on two sides of the selective lithium-ion permeable membrane, and the air permeability of the selective lithium-ion permeable membrane is greater than or equal to 4000 s / 100mL; the electrolyte comprises a positive electrolyte and a negative electrolyte, the positive electrode sheet and the positive electrolyte are accommodated on the positive electrode side, and the negative electrode sheet and the negative electrolyte are accommodated on the negative electrode side; and the positive electrolyte and the negative electrolyte are different. The aforementioned arrangement can improve the kinetics and high-temperature performance of the electrochemical device.

An ion permeable membrane for selective permeation of a target ion, preferably lithium, through the membrane, the membrane comprising a target ion permeable composite comprises a target ion permeable ceramic and at least one organic polymer associated with the target ion permeable ceramic.

To provide a water treatment device efficiently eliminating metal ions from hard water without using an ion exchange resin.SOLUTION: A water treatment device 1 eliminates metal ions from water to be treated to generate treatment water. The water treatment device includes an electrolysis tank 10 including an anode chamber 15 provided with an anode 12, a cathode chamber 16 provided with a cathode 13 and a film 14 partitioning the anode chamber from the cathode chamber and permeating ions, and generating acidic water and alkaline water from the water to be treated by electrolysis. The water treatment device further includes a control part 100 controlling voltage or current between the anode and the cathode. The acidic water flows in the anode chamber, and the alkaline water flows in the cathode chamber. The control part controls the flow rate of the acidic water in the anode chamber and the flow rate of the alkaline water in the cathode chamber so as to satisfy a formula (1).SELECTED DRAWING: Figure 1

Method for exhaust air purification, wherein an exhaust air stream is passed through a magnetic field (10, 20), a chemical, preferably basic or acidic, solution is sprayed into the exhaust air stream, The exhaust air stream is treated in an electrochemical reaction module (40) which comprises an anodic part, a cathodic part and an ion-permeable membrane (43) located between the anodic part and the cathodic part. wherein the anodic part comprises at least one passage channel (41), preferably a plurality of passage channels running side by side, wherein the cathodic part comprises at least one passage channel (42), preferably a plurality of passage channels running side by side, wherein a supplied reaction gas is passed through the cathodic part, wherein the exhaust air stream is passed through the anodic part for the oxidation of organic components of the exhaust air stream and In a third process stage (3) the exhaust air stream is passed through an electrostatic precipitator (30).

The utility model discloses an easy-to-disassemble cotton thread permeation reference electrode membrane module which comprises a membrane pressing seat, a membrane pressing plate, a membrane pressing plate, a membrane pressing plate, a membrane pressing plate and a membrane pressing plate, wherein an inner hole is formed in the membrane pressing seat in a penetrating manner; the cotton thread bar is arranged in the inner hole; and the ion permeable membrane is arranged at the bottom of the membrane pressing seat and is in contact with the cotton bar. According to the cotton thread permeation reference electrode membrane module provided by the utility model, the cotton thread is arranged in the inner hole of the membrane pressing seat, so that the defect that bubbles are generated in the inner hole of the membrane pressing seat in the storage and use processes of the electrode is overcome, and meanwhile, the pressure of filled liquid does not directly act on the ion permeation membrane any more, so that the service life of the membrane module is prolonged.

A water treatment device (1) for generating treated water by removing metal ions from water to be treated, wherein the water treatment device is provided with: an anode chamber (15) provided with an anode (12); a cathode chamber (16) provided with a cathode (13); and a membrane (14) for partitioning the anode chamber and the cathode chamber and capable of transmitting ions. The water treatment device (1) is further provided with an electrolytic cell (10) for generating acidic water and alkaline water from the water to be treated by electrolysis. The water treatment device is further provided with a control unit (100) that controls voltage or current between the anode and the cathode. The acidic water flows in the anode chamber, the alkaline water flows in the cathode chamber, and a flow velocity of the acidic water in the anode chamber is higher than a flow velocity of the alkaline water in the cathode chamber.

An ion permeable membrane for selective permeation of a target ion, preferably lithium, through the membrane, the membrane comprising a target ion permeable composite comprises a target ion permeable ceramic and at least one organic polymer associated with the target ion permeable ceramic.

This disclosure provides a fuel cell comprising at least one fuel cell substrate. Each fuel cell substrate comprises a MEA including an ion permeable membrane, an anode, and a cathode. The anode is located on a first surface of the ion permeable membrane, and the cathode is located on a second surface of the ion permeable membrane. Each fuel cell substrate comprises a first insulating layer having at least one first fluid path, and a second insulating layer having at least one second fluid path. The MEA is located between the first insulating layer and the second insulating layer such that at least one first fluid path is arranged to allow an oxidizing fluid to flow to one or more cathodes of at least one fuel cell substrate, and at least one second fluid path is arranged to allow a reducing fluid to flow to one or more anodes of at least one fuel cell substrate. The fuel cell substrate comprises at least one third fluid path for a heat exchange fluid.

To provide a water treatment device suppressing a sneak current from an electrode of an electrolysis tank to an electrode of an electric conductivity sensor.SOLUTION: A water treatment device 1 includes: an electrolysis tank 10 including an anode chamber 15 provided with an anode, a cathode chamber 16 provided with a cathode, and a film which partitions the anode chamber 15 and the cathode chamber 16 and through which ions can permeate, and generating acidic water and alkali water from water to be treated. The water treatment device 1 includes: a first electric conductivity measurement part 70 measuring electric conductivity of water flowing in the anode chamber 15, and a second electric conductivity measurement part 80 measuring electric conductivity of water flowing in the cathode chamber 16. The water treatment device 1 includes: a control part 100 controlling voltage applied to the anode and the cathode on the basis of the electric conductivity; and an electrolysis power supply 90 applying voltage on the anode and the cathode of the electrolysis tank 10 by control from the control part 100. The water treatment device 1 includes: an insulation part 200 for insulating the first electric conductivity measurement part 70 and the second electric conductivity measurement part 80 from the electrolysis power supply 90.SELECTED DRAWING: Figure 1

To provide a humidity-variation power-generation element having high operational stability with respect to environmental conditions.SOLUTION: The present invention relates to a humidity-variation power-generation element that obtains an electromotive force by using humidity fluctuations in the environment. In both sides of an ion-permeable membrane, an aqueous electrolyte containing an ionic compound having deliquescence is accommodated together with an electrode. On one side of the ion-permeable membrane, the aqueous electrolyte is accommodated in the ion-permeable membrane under a waterproof moisture-permeable film that allows water vapor to pass. On the other side of the ion-permeable membrane, the aqueous electrolyte is accommodated in the ion-permeable membrane under a waterproof and moisture-proof film or wall that blocks at least moisture in the environment. The waterproof moisture-permeable film has flexibility and is provided along the surface of the aqueous electrolyte.SELECTED DRAWING: Figure 2

To provide a water treatment device efficiently eliminating metal ions from hard water without using ion exchange resins.SOLUTION: A water treatment device 1 includes an electrolysis tank 10 including an anode chamber 15 provided with an anode 12, a cathode chamber 16 provided with a cathode 13 and a film 14 partitioning the anode chamber from the cathode chamber and permeating ions, and generating acidic water and alkaline water from the water to be treated by electrolysis. The water treatment device includes: a first electric conductivity measurement part 70 measuring an electric conductivity of water flowing in the anode chamber; a second electric conductivity measurement part 80 measuring an electric conductivity of water flowing in the cathode chamber; and a control part 100 controlling voltage or current between the anode and the cathode. The acidic water flows in the anode chamber, and the alkaline water flows in the cathode chamber. The control part decides time for finishing electrolysis control repeating constant current control and constant voltage control on the basis of at least one of an electric conductivity of water measured by the first electric conductivity measurement part and an electric conductivity of water measured by the second electric conductivity measurement part.SELECTED DRAWING: Figure 1

The present disclosure provides a component (201) for an electrochemical device. The component comprises a Membrane Electrode Assembly (MEA) (113) comprising at least one ion permeable membrane, at least one anode, and at least one cathode. The one or more anodes are arranged on a first surface of the ion permeable membrane and the one or more cathodes are arranged on a second surface of the ion permeable membrane. The component also comprises a cathode plate (101) comprising a first insulating layer between a first conductive layer and a second conductive layer, the first conductive layer comprising the first fluid path. The component also comprises an anode plate (102) comprising a second insulating layer between a third conductive layer and a fourth conductive layer, the third conductive layer comprising the second fluid path. The MEA is located between the first conductive layer of the cathode plate (101) and the third conductive layer of the anode plate (102) so that the first fluid path is arranged such that a fluid can flow to or from the one or more cathodes and so that the second fluid path is arranged such that a fluid can flow to or from the one or more anodes.

The invention pertains to an electrolysis system with a high-pressure electrolyzer for producing hydrogen (H2) and oxygen (O2) at a nominal pressure (PN). The system includes multiple electrolysis cells, each with two half-cells separated by an ion-permeable membrane, forming an anode chamber and a cathode chamber. An oxygen product line connects to the anode chamber, while a hydrogen product line connects to the cathode chamber. The hydrogen and oxygen product lines lead to respective gas separators. The system features compressed gas accumulators for hydrogen and oxygen, enabling pressurized gas to be supplied to the electrolyzer on both sides, with adjustable primary pressures. The invention also includes a method for operating the system, where the electrolyzer is precharged with pressurized gas, and differential pressures are regulated to ensure efficient operation. This system supports both proton-exchange membrane (PEM) and alkaline electrolysis for high-pressure hydrogen and oxygen production.

To provide a water treatment device provided with an electric conductivity sensor reducing influence of polarization due to metal ions remaining in treatment water and enabling measurement of appropriate electric conductivity.SOLUTION: A water treatment device 1 includes an electrolysis tank 10 including an anode chamber 15, a cathode chamber 16 and a film partitioning the anode chamber 15 from the cathode chamber 16 and permeating ions, and generating acidic water and alkaline water from the water to be treated by electrolysis. The water treatment device 1 includes: a first electric conductivity measurement part 70; a second electric conductivity measurement part 80; and a control part 100 controlling voltage applied to the anode and the cathode on the basis of the electric conductivity. The first electric conductivity measurement part 70 and / or the second electric conductivity measurement part 80 have / has an electric conductivity sensor 200 provided with a first electrode and a second electrode, and a voltage measurement terminal for voltage measurement. The control part 100 measures resistance of water existing between the first electrode and the second electrode on the basis of the voltage measured by the voltage measurement terminal and calculates an electric conductivity on the basis of measured water resistance.SELECTED DRAWING: Figure 1

A water treatment device (1) includes an electrolytic cell (10) for electrolytically producing acidic water and alkaline water from water to be treated, the electrolytic cell (10) comprising an anode chamber (15), a cathode chamber (16), and a membrane by which the anode chamber (15) is separated from the cathode chamber (16) and through which ions can pass. The water treatment device (1) further includes: a first conductivity measurement part (70); a second conductivity measurement part (80); and a control unit (100) which controls voltages to be applied to the anode and the cathode, on the basis of the conductivities. The first conductivity measurement part (70) and / or the second conductivity measurement part (80) has a conductivity sensor (200) including a first electrode, a second electrode, and a voltage measurement terminal for voltage measurement. The control unit (100) calculates the resistivity of the water present between the first electrode and the second electrode on the basis of the voltage measured with the voltage measurement terminal and calculates the conductivity on the basis of the measured resistivity of the water.

A system and method including an ion transfer cell including a first side and a second side separated by an ion-permeable membrane. A first flow channel is included on the first side, where the first flow channel includes a first liquid electrolyte slurry, where the first liquid electrolyte slurry comprises first particles, where the first particles are configured to accept or deploy at least one electron-ion pair. A first electrode is included within the first electrode flow channel, where the first electrode is along and in substantial contact with the ion-permeable membrane, where the first electrode is configured to facilitate a flow of ions through the first electrode to and from the first particles and the ion-permeable membrane. The first liquid electrolyte slurry is configured to flow through the first electrode flow channel in one of two opposite directions across the first electrode.

The invention provides a coaxial cable type electric control ion selective permeation device and application thereof in lithium ion extraction, and relates to the technical field of electrochemical separation. The coaxial cable type electric control ion selective permeation device comprises a carbon rod 1, a liquid receiving cavity 2, a lithium manganate ion permeable membrane 3, a raw material liquid cavity 4 and a conductive tubular electrode 5 which are sequentially and coaxially coated from inside to outside, the coaxial cable type electric control ion selective permeation device further comprises a power source 10, the carbon rod 1 is connected with the negative electrode of the power source 10, the conductive tubular electrode 5 is connected with the positive electrode of the power source 10, and the lithium manganate ion permeation membrane 3 is connected with the carbon rod 1 or the conductive tubular electrode 5 through an electric control switch 11. Periodic oxidation-reduction potential is applied through an electric control switch 11, Li ions on the raw material liquid side are driven to migrate to receiving liquid through a permeable membrane, Mg ions are repelled through oxidation state potential, and the self-cleaning and anti-blocking functions are achieved. The device can be used for continuously and efficiently treating the lithium-containing raw material liquid.

Provided is a water treatment device (1) for producing treated water by removing metal ions from water to be treated, the water treatment device comprising an electrolytic cell (10) that includes an anode chamber (15) provided with an anode (12), a cathode chamber (16) provided with a cathode (13), and a membrane (14) for partitioning the anode chamber and the cathode chamber and capable of transmitting ions, and that produces acidic water and alkaline water from the water to be treated through electrolysis. The water treatment device further comprises a control unit (100) that controls the voltage or current between the anode and the cathode. The acidic water flows in the anode chamber, the alkaline water flows in the cathode chamber, and the control unit controls the flow velocity of the acidic water in the anode chamber and the flow velocity of the alkaline water in the cathode chamber so as to satisfy mathematical formula 1.

The invention relates to the technical field of semiconductor manufacturing, in particular to a wafer electroplating device which comprises an electroplating cavity, a wafer electroplating device and a wafer electroplating device. The rotating assembly is used for clamping and rotating the wafer, so that the lower surface of the wafer is in contact with the electroplating liquid; the ion permeable membrane is arranged in the electroplating chamber; the rectifying element is arranged in the electroplating chamber and is positioned above the ion permeable membrane; a flow boosting element comprising a transmission assembly and at least one paddle; at least one inclined surface is arranged on the paddle, and the paddle is arranged between the rectifying element and the ion permeable membrane or between the rectifying element and the rotating assembly; and the driving assembly is matched with the transmission assembly to drive the paddle to rotate. The driving assembly drives the flow assisting element to rotate, so that the flowing problem of electroplating liquid deep in the electroplating cavity is solved, and the stability in the electroplating production process and the electroplating uniformity are improved.

This disclosure provides a fuel cell comprising at least one fuel cell board. Each fuel cell board comprises at least one first insulating layer, at least one ion-permeable membrane, a plurality of anodes, and a plurality of cathodes. All cathodes are arranged across the entire first surface of the ion-permeable membrane, and all anodes are arranged across the entire second surface opposite the first surface of the ion-permeable membrane. At least one material property of an anode or cathode, or the size of an anode or cathode, varies across the entire fuel cell board, and / or at least one material property of other components of the fuel cell board varies across the entire fuel cell board. A pair of anodes and cathodes flanking at least one ion-permeable membrane may be electrically connected in parallel with adjacent anode-cathode pairs.

Provided are a power generation method and a power generating element capable of obtaining an electromotive force by utilizing humidity variation in an environment and having excellent operation stability. An aqueous solution of an ionic compound having deliquescence is separated by an ion permeable membrane, electrodes are inserted into the aqueous solution on both sides of the ion permeable membrane, one is blocked from outside air and sealed, and the other is connected to the outside air, and a difference in ion concentration derived from the ionic compound in the aqueous solution is generated across the ion permeable membrane due to a change in humidity in the outside air to generate an electromotive force between the electrodes.

Provided is a power generation element that obtains a larger electromotive force using changes in humidity in the environment. Provided is a power generation element that generates power using a change in humidity caused by water vapor in the environment. A first chamber isolated from water vapor in the environment and a second chamber open to the water vapor in the environment are separated by an ion permeable membrane, and the first chamber and the second chamber are each filled with a water-based electrolyte comprising an aqueous solution of a deliquescent ionic compound. And electrodes are respectively arranged in the first chamber and the second chamber. Wherein the ion permeable membrane is composed of an electrolyte capable of conducting unhydrated ions.

The present disclosure is directed to lithium electrodeposition systems and methods of using such electrodeposition systems. Specifically, the electrodeposition systems disclosed herein can include a catholyte chamber and at least one anolyte chamber, wherein the catholyte chamber is configured to receive an electrode substrate such that a width direction of the electrode substrate is substantially parallel to the direction of gravity as it moves through the catholyte chamber. In addition, the system can be configured to flow lithium ions from the anolyte chamber to the catholyte chamber through an ion-permeable membrane and deposit lithium metal on a side of the electrode substrate as it moves through the catholyte chamber.

The invention relates to an electrolysis system (1) comprising an electrolyser (3) for producing hydrogen (H2) and oxygen (O2) as product gases, comprising a plurality of electrolysis cells which each have two half-cells separated by an ion-permeable membrane (5) so that an anode chamber (7) and a cathode chamber (9) are formed. On the anode side, an oxygen product line (11B) is connected to the anode chamber (7) and on the cathode side a hydrogen product line (11A) is connected to the cathode chamber (9), wherein the hydrogen product line (11A) leads into a first gas separator (13A) and the oxygen product line (11B) leads into a second gas separator (13B). The electrolysis system (1) has a differential pressure control device (15) which comprises a differential pressure sensor (17A) that is configured such that a differential pressure (Δp) between the anode chamber (7) and the cathode chamber (9) can be determined, the value of which can be processed in the differential pressure control device. The invention further relates to a method for operating such an electrolysis system (1).

The invention relates to the technical field of high-salinity wastewater treatment, in particular to a high-salinity wastewater purification reactor which comprises an inner tank, a wastewater pump and a water inlet pipe. The two ion permeable membranes are oppositely mounted at the bottom of the cavity of the tank body, the output end of the water inlet pipe extends into a space I defined by the two ion permeable membranes, a surrounding plate is mounted on the outer sides of the two electrodes in a surrounding manner, a space II for concentrating high-salinity wastewater is formed between the surrounding plate and the two ion permeable membranes, and a space II for concentrating high-salinity wastewater is formed between the surrounding plate and the two ion permeable membranes. The top of the second space is separated from the middle of the treatment chamber of the tank body through a reverse osmosis membrane, and a third space for crystallizing high-salinity wastewater is arranged between the outer side of the coaming and the inner wall of the tank body; the evaporation membrane is horizontally arranged at the middle upper part of the treatment chamber of the tank body, a fourth space for gathering clear water is arranged between the evaporation membrane and the reverse osmosis membrane, and a fifth space for gathering water vapor is arranged between the evaporation membrane and the top of the tank body; the high-salinity wastewater is subjected to secondary concentration, so that the crystallization and precipitation speed of the high-salinity wastewater is increased, and the purification treatment efficiency of the high-salinity wastewater is improved.

To provide a water treatment device efficiently eliminating metal ions from hard water without using an ion exchange resin.SOLUTION: A water treatment device 1 eliminates metal ions from treated water to generate treatment water. The water treatment device includes: an anode chamber 15 provided with an anode 12; a cathode chamber 16 provided with a cathode 13; a film 14 partitioning the anode chamber from the cathode chamber and can permeate ions; and an electrolysis tank 10 generating acidic water and alkaline water from the treated water by electrolysis. The water treatment device further includes a control part 100 controlling voltage or current between the anode and the cathode. The acidic water flows through the anode chamber, and the alkaline water flows through the cathode chamber. The flow rate of the acidic water in the anode chamber is faster than the flow rate of the alkaline water in the cathode chamber.SELECTED DRAWING: Figure 1

This provides a simpler way to recover lithium from waste energy storage devices containing lithium and polyvalent metals. [Solution] The lithium recovery method is a lithium recovery method for recovering lithium from waste of energy storage devices containing lithium and polyvalent metals, and includes a lithium recovery apparatus equipped with a cell having a raw material chamber between an anode and a cathode, an extraction chamber, and a monovalent selective cation permeable membrane separating the raw material chamber and the extraction chamber, and includes an extraction step in which lithium is extracted from an acidic raw material solution containing a leaching solution in which lithium and polyvalent metals contained in the waste are dissolved and leached out with mineral acid, contained in the raw material chamber, by passing an electric current between the anode and the cathode, into an acidic extract solution containing mineral acid contained in the extraction chamber.

The present application relates to the technical field of high-salinity wastewater treatment, and particularly relates to a high-salinity wastewater purification reactor, which comprises an inner tank body, a wastewater pump and a water inlet pipe; further comprising: two ion permeation membranes oppositely installed at the bottom of a cavity of the tank body, an output end of the water inlet pipe extending into a space one enclosed by the two ion permeation membranes, a surrounding plate installed around the outer side of the two electrodes, a space two for concentrating high-salinity wastewater formed between the surrounding plate and the two ion permeation membranes, the top of the space two and the middle part of a treatment cavity of the tank body being separated by a reverse osmosis membrane, a space three for crystallizing high-salinity wastewater being arranged between the outer side of the surrounding plate and the inner wall of the tank body; an evaporation membrane horizontally installed at the upper part of the treatment cavity of the tank body, a space four for gathering clean water being formed between the evaporation membrane and the reverse osmosis membrane, and a space five for gathering water vapor being arranged between the evaporation membrane and the top of the tank body; the high-salinity wastewater purification reactor improves the speed of crystallization and precipitation of high-salinity wastewater and the efficiency of high-salinity wastewater purification treatment by performing two-stage concentration on the high-salinity wastewater.