123 results about "Monovalent Cations" patented technology

The invention provides a method for recovering nitrogen and phosphorus in wastewater through self-driven bipolar membrane electrodialysis. A system used in the method takes a magnesium negative electrode as a positive electrode and an air electrode as a positive electrode, and a self-driven primary battery is formed through wire connection; and ion exchange membranes with specific sequences are sequentially arranged between the two electrodes to form eight chambers, namely an anode chamber, a nitrogen and phosphorus recovery chamber, a wastewater chamber, a metal ion chamber, an ammonia water chamber, a hydrochloric acid chamber, a buffer chamber and a cathode chamber. During operation, an external power supply is not needed, and ion migration is driven by a self-generated electric field: after Mg < 2 + > and PO4 < 3-> are enriched in the nitrogen and phosphorus recovery chamber and NH4 < + > and Ca < 2 + > migrate to the metal ion chamber, NH4 < + > enters the ammonia water chamber through the monovalent cation exchange membrane, and Ca < 2 + > is separated out and reacts with OH <-> generated by the bipolar membrane to generate Ca (OH) 2 precipitate, so that membrane blockage is effectively prevented, and finally, NH4 < + >, Mg < 2 + > and PO4 < 3-> react to generate high-purity struvite. Zero energy consumption of nitrogen and phosphorus recovery of the wastewater is achieved, no additional chemicals exist, anti-blocking operation is achieved, and both environmental benefits and resource benefits are achieved.

The invention discloses a preparation method and application of a monovalent cation selective membrane for efficient lithium-magnesium separation, and belongs to the technical field of preparation of cation selective membranes. The monovalent cation selective membrane is composed of a polyamide nanofiltration base membrane and a polyethyleneimine positive electricity layer, and the preparation method comprises the following steps: taking piperazine anhydrous as a water phase concentration and trimesoyl chloride as an oil phase monomer, reacting on a polyethersulfone ultrafiltration base membrane, and preparing the polyamide nanofiltration base membrane by utilizing an interfacial polymerization method; and anchoring on the surface of the polyamide nanofiltration base membrane by utilizing cross-linking of gallic acid and PEI with the molecular weight of about 70000 through a multi-layer deposition method to obtain the Gallic-PEI / polyamide composite membrane with the positively charged surface. The membrane can realize lithium-magnesium separation through pore size screening and electrostatic repulsion effect, and has high lithium-magnesium selectivity while maintaining large lithium ion flux in the application process of an electrodialysis system, so that the lithium-magnesium separation effect of salt lake brine is improved.

The invention discloses a perovskite material, a solar cell, a preparation method, electric equipment and power generation equipment, the general formula of the perovskite material is M < x > FA < y > A < 1-x-y > B < X > 3, and M comprises monovalent cations containing an N element; fA is a formamidine cation; a comprises at least one of inorganic or organic monovalent cations, B comprises at least one inorganic divalent cation, and X comprises at least one inorganic monovalent anion. According to the embodiment of the invention, the perovskite material containing formamidine cations is doped and improved through the monovalent cations containing the N element, and the stability of the corresponding perovskite solar cell is improved.

The invention relates to a double-coordination passivated red-light perovskite quantum dot and a preparation method and application thereof. The preparation method comprises the following steps: preparing a monovalent cation precursor from cesium carbonate, 1-octadecene and oleic acid; preparing a lead source precursor from lead halide, zinc halide, 1-octadecene, diisooctyl hypophosphorous acid and oleylamine; thermally injecting the monovalent cation precursor into the lead source precursor, and cooling to prepare a perovskite quantum dot solution; performing anti-solvent purification on the perovskite quantum dot solution to obtain red light perovskite quantum dots; a process of preparing a double-coordination passivated red light perovskite quantum dot from the red light perovskite quantum dot and taurosulfonamide hydrochloride; the invention also discloses an application of the double-coordination passivated red light perovskite quantum dot prepared by the preparation method in preparation of an electroluminescent diode. The post-treatment passivation operation method is simple and convenient, and the quantum dot treated by the double-coordination ligand achieves the purpose of preparing the halide perovskite quantum dot with excellent optical performance and excellent performance of the prepared electroluminescent diode.

Provided is an organopolysiloxane represented by formula (1) which is excellent in terms of the property of dispersing silicone oils and the like and dispersing particles and attains excellent long-term dispersion stability, wherein, when the organopolysiloxane is contained in a cosmetic preparation, the cosmetic preparation exhibits satisfactorily spreadability and blendability with the skin, no limitations on silicone oil content, and excellent long-term stability. [In the formula, R1 moieties are each independently a monovalent organic group selected from among C1-C20 alkyl groups, C6-C15 aryl groups, C7-C15 aralkyl groups, and -Q-O-R4; R2 is a hydroxystearic acid derivative represented by formula (2) (wherein X represents a hydrogen atom or a monovalent cation, n is 2-22, and m is 1-20); and a is 0-100, b is 0-10, c is 0-5, d is 0 or greater, e is 0 or greater, and f and g are numbers satisfying f+g=2+d+e×2, with the proviso that both b and g are not 0].

The present application relates to a method for preparing a perovskite layer and a photovoltaic device, the method comprising: a) forming a first solid layer on a substrate from a first precursor material; the first precursor material comprising at least one divalent inorganic cation B, at least one monovalent cation A and halide anions X; b) treating the first solid layer with a second precursor solution to form the perovskite layer, wherein the second precursor solution comprises at least one monovalent cation A, halide anions X and SCN ‑ The present application enables to control the perovskite film formation process, to optimize the grain size and especially to enhance the growth of the perovskite layer on a textured morphology by adding a thiocyanate compound, in particular a mixture of methylammonium chloride (MACI) and methylammonium thiocyanate (MASCN) in the second step of a two-step process.

The embodiment of the invention discloses an adhesive and a preparation method thereof, a negative pole piece and a sodium ion battery, the structural formula of the adhesive is shown in the specification, R1 is a monovalent cation, R2 is an alkyl group with a carbon atom number of 1-6, R3 is an alkyl group or alkoxy group with a carbon atom number of 1-5, and n is 3-5. By introducing a long carbon chain into a polyacrylic acid main chain, the glass transition temperature of the polyacrylic acid can be reduced, the flexibility of the polyacrylic acid can be improved, and when the polyacrylic acid is applied to a negative pole piece, the flexibility of the negative pole piece can be improved.

Disclosed in the present application are a perovskite material, a solar cell, a preparation method therefor, an electrical device and power generation equipment. The general formula of the perovskite material is MxFAyA1-x-yBX3, M+ being a N-containing monovalent cation, FA+ being formamidinium, A being at least one of inorganic or organic monovalent cations, B being at least one inorganic divalent cation, and X being at least one monovalent anion. The embodiment of the present application dopes a formamidinium-containing perovskite material with a N-containing monovalent cation so as to improve same, thus improving the stability of corresponding perovskite solar cells.

The invention relates to a solar cell, a preparation method thereof and a photovoltaic module. The preparation method of the solar cell comprises the following steps: heating and melting divalent cation halide at a first temperature to enable the divalent cation halide to be in a solid-liquid mixed state; cooling the divalent cation halide to a second temperature, wherein the second temperature is the lowest temperature capable of keeping the divalent cation halide in a solid-liquid mixed state; at a second temperature, evaporating the divalent cation halide on the substrate to prepare a skeleton layer; and coating a monovalent cation solution on the skeleton layer, and annealing to prepare the perovskite layer. According to the preparation method of the solar cell, the film forming quality of the perovskite film can be improved while the evaporation rate of the framework layer is improved, and then the photoelectric conversion efficiency of the cell is improved.

The application relates to the technical field of solar cell materials, in particular to a perovskite film, a preparation method thereof and a perovskite solar cell. The preparation method of the perovskite film comprises the following steps: preparing a divalent inorganic salt aqueous solution, wherein the divalent inorganic salt in the divalent inorganic salt aqueous solution is an inorganic salt corresponding to a divalent cation pair of the perovskite; performing film forming treatment on the divalent inorganic salt aqueous solution to obtain a divalent inorganic salt film; soaking the divalent inorganic salt film in a methyl halide ammonium solution for soaking treatment; coating a solution containing a formamidine halide salt on the divalent inorganic salt film after drying; and performing annealing treatment to obtain a perovskite film containing an organic-inorganic hybrid perovskite; wherein the methyl halide ammonium solution contains a linear alkyl halide ammonium with 2-5 carbons. The application can make the monovalent cations in the perovskite film uniformly distributed, so that the perovskite film shows a larger grain size, a lower charge trap density and a longer carrier lifetime, and can be well used in a solar cell.

The invention provides a light generating system (1000) comprising a first light generating device (110) and a control system (300), wherein the first light generating device (110) comprises a first solid state light source (10), a second solid state light source (20), and a luminescent converter (2000), wherein: (A) the first solid state light source (10) is configured to generate first light source light (11) having a first peak wavelength (λp1) selected from the range of 400-490 nm; (B) the second solid state light source (20) is configured to generate second light source light (21) having a second peak wavelength (λp2) selected from the range of 470-540 nm; wherein λp2 - λp1 ≥ 20 nm; (C) the luminescent converter (2000) is configured in a light receiving relationship with the first and second solid state light source (10,20); wherein the luminescent converter (2000) comprises a first luminescent material (210) and a second luminescent material (220); (D) the first luminescent material (210) comprises a luminescent material of the type M'xM2-2xAX6 doped with tetravalent manganese, wherein M' comprises an alkaline earth cation, M comprises a monovalent cation, and x is in the range of 0-1, wherein A comprises a tetravalent cation, wherein X comprises a monovalent anion, at least comprising fluorine; wherein the first luminescent material (210) is configured to convert at least part of the first light source light (11) received by the first luminescent material (210) into first luminescent material light (211); (E) the second luminescent material (220) is configured to convert at least part of the second light source light (21) received by the second luminescent material (220) into second luminescent material light (221); wherein the second luminescent material light (221) has a second centroid wavelength (λc2) selected from the range of 600-660 nm; wherein the second luminescent material light (221) comprises at least one emission band having a second full width at half maximum FWHM2 of ≥ 40 nm; (F) the first light generating device (110) is configured to generate first device light (111); wherein in an operational mode of the first light generating device (110), the first device light (111) comprises one or more of the first luminescent material light (211) and the second luminescent material light (221); wherein the first device light (111) has a first device centroid wavelength (λcd1) selected from the range of 600-660 nm; and (G) the control system (300) is configured to control a spectral power distribution of the first device light (111) by controlling the first solid state light source (10) and the second solid state light source (20).

The invention discloses a covalent organic framework (COF) heterostructure separation membrane for high-selectivity separation of monovalent cations as well as a preparation method and application of the covalent organic framework (COF) heterostructure separation membrane. The separation membrane comprises a porous supporting substrate and a COF selective layer on the porous supporting substrate, the selective layer is composed of a first COF layer and a second COF layer which are overlapped with each other, the first COF layer is formed by assembling COF nanosheets containing sulfonic acid groups or salt groups of the sulfonic acid groups, the second COF layer is formed by assembling COF nanosheets containing alkyl substituent groups, and a COF framework contains imine bonds. The preparation method comprises the following steps: preparing two types of COF nanosheet dispersion liquid through an oil-water-oil three-phase interface reaction, carrying out dispersion treatment, and sequentially depositing and curing / drying by adopting vacuum suction filtration to obtain the heterostructure separation membrane. The separation membrane can be used for selective separation of monovalent cations such as Li < + >, Na < + > and K < + >, is suitable for systems such as salt lake brine, seawater desalination concentrate and battery recovery liquid, and has the advantages of high ion screening selectivity, stable structure and controllable preparation.

The present application belongs to the technical field of inorganic salt separation and purification, and discloses a method for purifying ammonium chloride solution, aiming to solve the technical problem that the prior art cannot effectively separate ammonium ions and sodium ions. The method comprises: S1, purifying agricultural-grade ammonium chloride solution containing sodium ions through a first membrane system to obtain a first permeate and a first retentate, wherein the separation layer surface of the first special membrane is electronegative; S2, secondly purifying the first permeate through a second membrane system; and S3, obtaining product ammonium chloride solution and reusable fresh water through a product recovery system from the second permeate. The present application utilizes the electronegativity of the membrane surface and the differential interface interaction of different monovalent cations to realize the preferential permeation of ammonium ions and the effective retention of sodium ions. The method does not need to adjust the pH value or heat the raw material solution, has a simple process, low energy consumption, and can obtain ammonium chloride products with a purity of more than 99.5%.

The present invention provides an azo iron complex dye which does not contain harmful heavy metals, has sufficient practical solubility to organic solvents, and exhibits a good black color, the azo iron complex dye being represented by the following formula (1). 【Chem. 1】(In formula (1), R1 and R2 are each independently a linear or branched alkyl group having 3 to 10 carbon atoms, R3 is an electron-withdrawing group, R4 is a linear or branched alkyl group having 1 to 5 carbon atoms or a linear or branched alkoxy group having 1 to 5 carbon atoms, R5 is a nitro group, a sulfonamide group, or a halogen atom, R6 is a hydrogen atom, a linear or branched alkyl group having 1 to 8 carbon atoms, a nitro group, or a halogen atom, R7 is a hydrogen atom or a linear or branched alkyl group having 3 to 12 carbon atoms, and A+ is a monovalent cation.)

Provided are a capacitor and a method for manufacturing the capacitor, the capacitor including: a first thin-film electrode layer; a second thin-film electrode layer; a dielectric layer, including a binary metal oxide, between the first thin-film electrode layer and the second thin-film electrode layer; and an interlayer, including an anionized layer, between the dielectric layer and at least one of the first thin-film electrode layer or the second thin-film electrode layer. The interlayer has a same type of crystal structure as and a different composition from the dielectric layer, and the anionized layer includes at least one of a monovalent cation, a divalent cation, or a trivalent cation.

The invention relates to the technical field of membrane separation, in particular to a functional group regulated covalent organic framework (COF) membrane and a preparation method thereof, and relates to application of the membrane in selective separation of monovalent cations. The preparation method comprises the following steps: condensing a polyaldehyde monomer and aromatic diamine with different side chain substitutions on an interface through oil-water-oil three-phase interface micro-fluidic dripping to generate a two-dimensional COF nanosheet, carrying out ultrasonic dispersion, carrying out vacuum filtration, self-assembling on a porous substrate, and drying to obtain a continuous separation layer with the thickness of 50-150nm. The functional group can regulate and control pore channels and surface charges, flux and selectivity of monovalent cations such as Li < + > can be adjusted, effective separation is kept at the pH of 3-11, and the functional group is suitable for lithium salt extraction and electrolyte purification.

Provided is a porous metal cyanide-based framework material (MCFs) with cation gating effect, along with its preparation method and application in carbon dioxide capture. The general structural formula of the framework material is Mx[M′(CN)6]y·Az·nH2O, where 0≤n≤10. When n≥1, the crystal structure belongs to the R3c space group. When 0≤n<1, the structure transforms to the P2 / c space group. The framework material has a cage structure, and each cage has six hexagonal windows and six quadrilateral windows. The monovalent cations at the hexagonal windows exhibit a gating effect, which can selectively allow carbon dioxide molecules to pass through. The framework material has the highest CO2 adsorption capacity and selectivity in carbon dioxide capture, especially in the application of carbon dioxide adsorption under low pressure (≤0.15 bar) and high humidity environment (≥40% RH)

The invention discloses a preparation method of a monovalent cation screening membrane, and belongs to the technical field of membrane preparation, a conventional cation exchange membrane is used as a base membrane, the surface layer of the single side of the base membrane is coated with a cation membrane monomer solution to form a negatively charged skin layer, and macromolecular chains of the negatively charged skin layer are mutually crosslinked and have halogen substituent groups; a side chain carbon-carbon double bond positively charged polymer solution is coated on the negatively charged skin layer, the carbon-carbon double bond is subjected to polymerization reaction to form the positively charged skin layer, on one hand, an organic amine monomer component is linked to the positively charged skin layer through a carbon-carbon double bond polymerization bond, and on the other hand, the organic amine monomer component is linked to the negatively charged skin layer through a reaction bond of an amino group and a halogen substituent group; covalent bond connection and ionic bond connection of electrostatic interaction between positive and negative charges are formed between the positively charged skin layer and the negatively charged skin layer, and the prepared monovalent cation screening membrane has high monovalent cation screening characteristic and long service life.

The invention discloses a solar cell and a preparation method thereof, a photovoltaic device, a power utilization device and a power generation device, the solar cell comprises a first electrode layer, a functional layer and a second electrode layer which are stacked, the functional layer comprises a first light absorption layer, the first light absorption layer comprises a perovskite layer, the chemical formula of the perovskite layer is A (BbPbaSn1-a-b) X3, a is greater than 0 and less than 1, b is greater than or equal to 0 and less than or equal to 0.1, and X is greater than or equal to 0 and less than or equal to 1. The A ions comprise inorganic or organic or organic-inorganic mixed monovalent cations, the B ions comprise inorganic divalent cations, the X ions comprise inorganic or organic or organic-inorganic mixed monovalent anions, the perovskite layer comprises a hole transmission interface and an electron transmission interface which are opposite to each other, and a is gradually increased along the direction from the hole transmission interface to the electron transmission interface. According to the invention, through setting the tin-lead gradient distribution in the vertical direction of perovskite, a vertical structure heterojunction with energy band gradient and more compatible interface energy level arrangement are realized, charge transmission is promoted, and carrier loss is reduced, so that the photoelectric conversion efficiency of the solar cell is improved.

The invention discloses a soybean protein-phospholipid biomimetic membrane as well as a preparation method and application thereof. The biomimetic membrane is formed by three raw materials of soybean protein, soybean lecithin and a charged polymer through electrostatic interaction and a physical blending method. The soybean 11s protein solution, the lipidosome dispersion liquid and the charged polymer solution are mixed to obtain the mosaic structure biomimetic membrane which is formed by combining various chemical bond crosslinking and electrostatic interaction, and the process conditions are simple, efficient, convenient and environmentally friendly. The biomimetic membrane provided by the invention has a mosaic structure and the characteristics of the raw materials, so that the biomimetic membrane has high ion passing rate, strong ion selection capability, excellent monovalent cation and divalent cation separation capability and certain biodegradability. When the biomimetic membrane is applied to ion separation, the separation capacity of ions with different valence states can be effectively improved, the separation effect of sodium ions and magnesium ions is optimal, and the separation factor is as high as 21.28 and is 54.6 times that of a biomimetic membrane without charges.

The application provides a perovskite ink composition, a perovskite ink and a preparation method thereof, a perovskite thin film and a preparation method and application thereof. The perovskite ink composition comprises AX, BX2, a solvent and a passivation agent, wherein A represents a monovalent cation, B represents a divalent cation, and X represents a halogen ion; the solvent comprises at least two organic solvents with different boiling points, and the solvent comprises at least two organic solvents with different solubilities for the passivation agent. The perovskite ink formed by the perovskite ink composition can be applied to the preparation of a perovskite thin film with high crystallinity and low defect state density, and can be used in the form of blade coating, inkjet printing, slot coating, roll-to-roll printing and the like, especially in the preparation process of a large-area perovskite battery, the production efficiency can be effectively improved, the process flow is simplified, and the production cost is reduced.

Anionic surfactants include compounds or mixtures of compounds having the formula, wherein R1 comprises hydrogen, methyl, or hydroxy; R2 comprises methyl, hydroxy, or hydrogen; R'2 comprises methyl, hydroxy, or hydrogen; R3 comprises a hydrocarbon group having from 1 to 18 carbon atoms, including a straight chain hydrocarbon group, a branched hydrocarbon group, a saturated hydrocarbon group, an unsaturated hydrocarbon group, or a combination thereof; and M + is a monovalent cation, and when both R2 and R'2 contain hydrogen, if R3 is a straight chain hydrocarbon group, then R1 does not contain hydrogen, and when R3 is a branched hydrocarbon group, then R2, R2, and R1 all contain hydrogen. [Formula 1] TIFF2026501160000017.tif28143

Methods for processing pretreated phosphogypsum wastewater are disclosed. The pretreated wastewater may be subjected to electrodialysis involving at least one monovalent cation selective membrane. Further downstream membrane treatment may be applied. Upstream precipitation and air-stripping techniques may optionally also be employed. Related systems are also disclosed.

Provided are an adsorbent which is capable of efficiently adsorbing a gas, a liquid, a solid substance or the like; and a gas adsorption method using the same.　This adsorbent contains an amine compound (A) and an acid (B), wherein the amine compound (A) is represented by following formula (I) or (II). (In the formula, Ra represents a linear or branched hydroxy hydrocarbon group having one or more hydroxyl groups and a hydrocarbon moiety having 1-22 carbon atoms, Rb represents a hydrogen atom or a hydrocarbon group having 1-22 carbon atoms, and c represents an integer of 1-3.) (In the formula, R1 represents an optionally substituted monovalent or divalent hydrocarbon group having 1-22 carbon atoms, R2 represents a hydrogen atom or an optionally substituted monovalent or divalent hydrocarbon group having 1-22 carbon atoms, R3 represents an optionally substituted divalent hydrocarbon group having 1-22 carbon atoms, l represents a number of 0-2, m represents a number of 0-2, and n represents 0 or 1, R1 and R2 may be combined to form a ring having 3-22 carbon atoms, and X represents a hydrogen atom or a monovalent cation.)

The invention discloses an antibacterial cyclic amino acid surfactant as well as a preparation method and application thereof, and belongs to the technical field of synthesis of amino acid surfactants. The antibacterial cyclic amino acid surfactant has the following structure: # imgabs0 #, in which R is a saturated hydrocarbon chain, R1 is a fatty acyl group, and M is a monovalent cation; the linear amino acid surfactant not only has a good thickening effect, but also shows good inhibitory activity on various bacteria and fungi, the bacteriostatic activity is far higher than that of the conventional linear amino acid surfactant, and the linear amino acid surfactant can be widely applied to daily chemical products.

An aqueous dispersion including a polymer having a 2-oxazoline group; and a surfactant, the surfactant containing a sulfuric acid ester compound represented by the following Chemical Formula (S):R1—O—(R2O)nSO3X  (S)wherein R1 represents an aliphatic hydrocarbon group having 8 to 20 carbon atoms; R2 represents an alkylene group having 2 to 4 carbon atoms; n represents 2 to 15; and X represents a monovalent cation.

The invention relates to a method for producing phosphoric acid, a monovalent cation sulfate and calcium carbonate, comprising a first treatment of a phosphate source with an inorganic acid solution, a second treatment for obtaining calcium sulfate, recovery of phosphoric acid and calcium sulfate to be treated in a treatment with a monovalent cation carbonate solution, and recovery of calcium carbonate and a monovalent cation sulfate.

The invention provides a light generating system (1000) comprising a first light generating device (110), wherein the first light generating device (110) comprises a first solid state light source (10) and a luminescent converter (2000), wherein: (A) the first solid-state light source (10) is configured to generate light source light (11) having a first peak emission wavelength (λp1) selected from the range of 430-490 nm; (B) the luminescent converter (2000) is configured in a light receiving relationship with the first solid-state light source (10); wherein the luminescent converter (2000) comprises a first particulate luminescent material (2100), a second particulate luminescent material (2200), and a main matrix material (700); wherein the first particulate luminescent material (2100) and the second particulate luminescent material (2200) are configured embedded in the main matrix material (700); (C) the first particulate luminescent material (2100) comprises a first luminescent material (210) configured to convert light source light (11) received by the first luminescent material (210) into first luminescent material light (211) having a first centroid wavelength (λc1) selected from the range of 600-660 nm; (D) the second particulate luminescent material (2200) comprises (i) a second particulate matrix material (720) and (ii) primary particles (2300) comprising a second luminescent material (220), wherein the primary particles (2300) are configured embedded in the second particulate matrix material (720); wherein the second luminescent material (220) comprises a luminescent material of the type M'xM2-2xAX6 doped with tetravalent manganese, wherein M' comprises an alkaline earth cation, wherein M comprises an monovalent cation, wherein A comprises a tetravalent cation, and wherein X comprises a monovalent anion, at least comprising fluorine (F); wherein the second luminescent material (220) is configured to convert light source light (11) received by the second luminescent material (220) into second luminescent material light (221) having a second centroid wavelength (λc2) selected from the range of 610-650 nm; (E) the first light generating device (110) is configured to generate first device light (111) comprising the first luminescent material light (211) and the second luminescent material light (221); and wherein the first device light (111) has a first device centroid wavelength (λcd,1) selected from the range of 610-660 nm.

In an embodiment a method includes a) providing an aqueous solution of a carbon dioxide absorption agent, wherein the carbon dioxide absorption agent comprises cations of the 1st main group of the periodic table, b) passing an air flow containing carbon dioxide through the aqueous solution of method step a), wherein at least a part of the carbon dioxide from the air flow is bound to the carbon dioxide absorption agent and the air flow is depleted in carbon dioxide and c) introducing the aqueous solution of method step b) or an aqueous solution including the carbon dioxide bound to the carbon dioxide absorption agent into a middle chamber of an at least three-chamber electrolysis cell, wherein the three-chamber electrolysis cell includes a membrane selective for monovalent cations, and electrolyzing the aqueous solution of method step b) or the aqueous solution comprising the carbon dioxide bound to the carbon dioxide absorption agent under release of at least a part of the carbon dioxide.