21 results about "Ionic transfer" patented technology

The invention relates to a preparation method of an in-situ growth neutral gel electrolyte membrane regulated and controlled by ethanolamine and application of the neutral gel electrolyte membrane in negative electrode protection of an aqueous zinc ion battery. The gel is promoted to form a film on the surface of a zinc plate by utilizing the crosslinking effect of ethanolamine, acrylamide and 2-acrylamide-2-methylpropanesulfonic acid and the strong bonding effect of ethanolamine and the zinc plate. The membrane can improve the problems of low ion transfer rate, high free water molecule content and high activity of the traditional gel electrolyte, effectively inhibit the generation of hydrogen evolution reaction, and improve the ion transfer number, thereby improving the stability of the negative electrode and the intestinal circulation performance of the battery. The method is simple and safe to operate and shows excellent electrochemical performance, and the invention provides the method for protecting the negative electrode of the aqueous zinc ion battery.

The present invention discloses a sodium-magnesium hybrid battery with a P2-phase layered oxide cathode material, which includes a positive electrode sheet, a negative electrode sheet and a Na / Mg double-salt electrolyte. The positive electrode sheet includes a P2-phase layered oxide cathode material, and the negative electrode sheet is pure magnesium or a magnesium alloy. The present invention also provides a preparation method and an application of the sodium-magnesium hybrid battery with the P2-phase layered oxide cathode material. The present invention fundamentally avoids the consumption of raw sodium, and the relatively high specific capacity of metallic magnesium can additionally compensate for Mg<supgt;2+< / supgt;, enabling the battery to have a relatively high energy density; dendrites will not be generated on the surface of the metallic magnesium negative electrode, improving the intrinsic safety of the battery; while giving play to the inherent advantages of magnesium batteries, it also takes into account the advantage of the high ion transfer rate of the P2-phase layered oxide cathode material, having a relatively high first-cycle charge-discharge specific capacity and cycle stability; it can be used for energy storage devices in hydropower generation, wind power generation, backup power supplies or communication base stations, as well as power batteries for electric bicycles and low-speed electric vehicles.

The invention discloses an integrated zinc ion battery based on a curled nanofiber-based gel electrolyte. The integrated zinc ion battery is structurally characterized by being composed of a curled nanofiber-based gel electrolyte layer, a positive electrode layer, a negative electrode layer, an upper packaging layer and a lower packaging layer, wherein the positive electrode layer is composed of a positive electrode material with zinc ion intercalation / deintercalation activity; the negative electrode layer is composed of metal zinc and a carbon nanomaterial; the preparation method mainly comprises the following steps: preparation of a polyisophthaloyl metaphenylene diamine coated polyurethane curled nanofiber membrane, preparation of a polyvinyl alcohol hydrogel electrolyte, compounding of a curled nanofiber based gel electrolyte, loading of a positive electrode material, loading of a negative electrode material, and packaging of the integrated zinc ion battery. According to the design, the mechanical property of the gel electrolyte is remarkably enhanced through the curled nanofibers, the impedance can be effectively reduced and the ionic conductivity can be effectively improved through better interface contact, the relative displacement or separation between adjacent assemblies can be prevented through the unique integrated structure, and even if the surface of the battery is deformed, the continuous and effective ion transfer capacity in the battery can be ensured; therefore, the device has excellent structural design and stable electrochemical performance, and is expected to provide a new direction for the development of next-generation wearable energy storage devices.

A semi-solid-state electrolyte system for use in a battery cell is provided. The semi-solid-state electrolyte system includes an oxysulfide solid-state electrolyte and a secondary electrolyte including a solvate ionic liquid. The semi-solid-state electrolyte system is configured for providing excellent ionic conductivity, supporting high current densities at a low stack pressure, and including excellent chemical stability. The oxysulfide solid-state electrolyte and the solvate ionic liquid are collectively configured for facilitating ion transfer between an anode of the battery cell and a cathode of the battery cell.

The invention discloses a salt-containing organic wastewater treatment device, system and method. The salt-containing organic wastewater treatment device comprises: a shell; the separation pipe is arranged in the shell, and the two ends of the separation pipe penetrate through the shell; the organic matter treatment unit comprises an organic matter adsorption layer and an organic matter desorption assembly; the inorganic salt treatment unit comprises an electrode assembly, a pulse power supply and an inorganic salt discharge pump, and the two units are communicated through a separation pipe separation channel. According to the invention, the principle that pulse electro-adsorption-desorption salt ions are instantaneously enriched in a corresponding electric field is utilized, and organic matters dissolved in water are enriched by virtue of the adsorption-ultrasonic desorption effect of the modified fabric at the same time; instantaneous high-concentration salt ions in the field region are transferred out in time when the electric field is reversed, so that the concentration difference is enlarged, thereby realizing step-by-step concentration of salt components (or organic components) in high-salt-concentration materials containing organic matters, finally realizing low-energy-consumption and high-flux separation of salt and high-boiling-point organic components in high-concentration organic wastewater, and improving the product value.

The application provides a preparation method of an ion complex and a supramolecular framework assembly, an artificial solid electrolyte interface phase and a zinc metal anode, and belongs to the field of supramolecular framework assemblies. The ion complex is prepared through ion interaction of a polyoxometalate cluster, coordination of zinc ions and cationic terpyridine and hydrogen bonding of grafted carboxyl groups, so that the three-dimensional SF is constructed in a good crystalline state. The three-dimensional growth of the framework of the ion complex is beneficial to improving the structural stability, while the unique performance is maintained. The ion complex can grow in situ on the zinc surface and further extend laterally to form a defect-free full coverage layer. Through dissolution and post-coordination effect, the 3D SF layer is used as an artificial solid electrolyte interface to improve the performance of the zinc anode. The clusters uniformly distributed in the nanopores of the ion complex form negatively charged nanochannels, which can accelerate the transfer of zinc ions and make the zinc deposition uniform.

The invention relates to a biosensor and a method of detecting a target substance by using the biosensor. The biosensor according to an embodiment of the invention includes a reaction layer generating a hydrogen ion through a physical and / or chemical interaction with a target substance in a specimen, a hydrogen ion transfer layer formed on one side of the reaction layer to transfer the hydrogen ion generated in the reaction layer, and a phase transition layer formed on one side of the hydrogen ion transfer layer, in which a phase of a substance changes due to the hydrogen ion transferred from the hydrogen ion transfer layer.

The present invention discloses a low-temperature-resistant lithium-ion battery negative electrode slurry, its preparation method, and application, belonging to the field of lithium-ion battery technology. The low-temperature-resistant lithium-ion battery negative electrode slurry is composed of the following components, calculated by mass percentage: 42-48.5% negative electrode material, 0.1-3.0% polyacrylate binder, 1-2.0% conductive agent, 0.6-1.5% sodium carboxymethyl cellulose, and 45-55% deionized water. The negative electrode slurry of the present invention improves the compatibility of the electrolyte and the negative electrode material at low temperatures, increases the ion transfer rate, and reduces the internal resistance, effectively ensuring the low-temperature discharge performance of the lithium-ion battery.

The invention discloses a recovery treatment method of ammonium fluoride wastewater. The method comprises the following steps: firstly, separating ammonium ions from the ammonium fluoride wastewater in an ion exchange adsorption mode; and then, carrying out replacement reaction by utilizing a regeneration solution so as to transfer the ammonium ions into the regeneration solution. And then, controlling the pH value of the regeneration liquid subjected to the replacement reaction to be 10-11.5, so that the ammonium ions are converted into free ammonia. The pH-controlled regeneration liquid is then subjected to a stripping treatment to produce an ammonia-containing gas. And then, carrying out absorption treatment on the ammonia-containing gas to generate ammonia water. Therefore, the purposes of saving energy, reducing carbon and recycling waste can be achieved. The invention further discloses a recycling treatment system for the ammonium fluoride wastewater, which is used for implementing the steps.

The application discloses a salt-containing organic wastewater treatment device, a treatment system and a treatment method. The salt-containing organic wastewater treatment device comprises a shell, a separation pipe arranged in the shell and penetrating through the shell at both ends, an organic matter treatment unit comprising an organic matter adsorption layer and an organic matter desorption assembly, and an inorganic salt treatment unit comprising an electrode assembly, a pulse power supply and an inorganic salt discharge pump, and the two units are connected through a separation pipe separation channel. The application utilizes the principle of instantaneous enrichment of salt ions in the corresponding electric field by pulse electric adsorption-desorption, and enriches dissolved organic matter in water by the aid of modified fabric adsorption-ultrasonic desorption. When the pulse fluid provided by the liquid pump reverses the electric field in time, the instantaneous high-concentration salt ions in the field area are transferred out to expand the concentration difference, so that the salt component (or the organic component) in the high-salt-concentration material containing organic matter is gradually concentrated, and finally, the high-concentration organic wastewater is separated at low energy consumption and high flux to improve the value of the product.

Provided are layered gel-polymer electrolytes and electrochemical cells comprising these electrolytes as well as methods of forming the electrolytes and the cells. A gel-polymer electrolyte comprises a support core and one or two interface layers on the core surface. The interface layers are relied on to conform to electrode surfaces with high surface roughness, while the support core prevents any physical penetration and electrical shorts through the gel-polymer electrolyte, e.g., by electrode protruding peaks. Specifically, the interface layer redistributes around these protruding peaks and forms a continuous interface with the electrode surface. When the stack is compressed, the gel-polymer electrolyte also releases some liquid electrolyte, which soaks the electrode and enhances ionic transfer within the electrode and through the electrolyte-electrode interface. The gel-polymer electrolyte is formed by coating interface layers on the support core and soaking this assembly in a liquid electrolyte.

The invention relates to the technical field of fluorine-containing wastewater treatment, and particularly discloses a method for recovering a high-purity fluoride product from high-concentration fluorine-containing wastewater, an extraction method comprises raw material pretreatment, ion transfer enrichment and chemical precipitation, an ion transfer enrichment device comprises a positive electrode tank, a negative electrode tank, an intermediate tank, a first ionic membrane plate and a second ionic membrane plate, the energy consumption is low, and the whole process is operated at normal temperature; meanwhile, the material cost is low, the lithium ion selective membrane can be repeatedly used, expensive adsorbents or organic solvents are not needed, meanwhile, pollutant-free emission is achieved, organic solvents are not needed, pretreatment precipitates can be recycled, and large-scale popularization and application are facilitated.

This invention relates to the field of zinc-ion battery technology, providing the preparation and application of a solid electrolyte and its MXene-derived titanium dioxide additive. The preparation method of the solid electrolyte includes: mixing zinc trifluoromethanesulfonate and acetamide at a mass ratio of 1:1.137, heating and stirring in an 85°C water bath until a liquid state is achieved; adding 1 wt%, 2 wt%, 3 wt%, 4 wt%, and 5 wt% TiO2@Ti3C2 powder to the solution, and stirring until homogeneous; injecting the electrolyte into a glass fiber membrane at high temperature, and then cooling and solidifying at room temperature to obtain a solid electrolyte for application in batteries. In this invention, the TiO2@Ti3C2 filler improves the ionic conductivity of the solid electrolyte, promotes the dissociation of zinc salts, forms ion transfer channels on the filler surface, and acts as a plasticizer to reduce polymer crystallinity and enhance chain migration, effectively improving the electrochemical performance of solid zinc-ion batteries.

The invention relates to the technical field of electrochemical sensing, in particular to an ultramicro electrode for monitoring chloride ions in real time and a preparation method and application of the ultramicro electrode. The ultramicro electrode comprises a hollow micron tube, an organic phase reference electrode and a water phase reference electrode / counter electrode; the tip of the hollow micron tube is filled with an organic phase, the organic phase reference electrode is inserted into the organic phase, the organic phase reference electrode and the water phase reference electrode / counter electrode are connected through a wire, and the organic phase comprises an organic solvent, organic gel powder and an ionic ligand. When the chloride ions are monitored, ion ligands in an organic phase and the chloride ions in a water phase to be detected are subjected to reversible specific binding at a liquid-liquid interface to accelerate an ion transfer reaction, so that the ultramicro electrode can monitor an ion transfer current, and real-time monitoring of the chloride ions is realized; the ultramicro electrode has good linear responsiveness, selectivity, reversibility and stability, and has wide application prospects in molecular pathology of nervous system diseases and related diagnosis and treatment aspects.

The application discloses a single-particle size measurement method based on liquid / liquid interface ion transfer shielding effect, which comprises the following steps: filling a water phase solution in a micro-nano glass tube, inserting an Ag / AgCl electrode into the micro-nano glass tube, inserting the micro-nano glass tube and a counter / reference electrode into an electrolytic cell containing an oil phase solution, and measuring a pre-collision steady-state current; adding a to-be-measured particle into the water phase solution, measuring a post-collision steady-state current, and obtaining the particle size according to the following formula: The application adopts a micro liquid / liquid interface two-electrode system, utilizes two-phase ion transfer as an indicating reaction to realize single-particle ion transfer current shielding effect collision electrochemistry.

Electrocatalytic apparatus for the simultaneous conversion of methane and CO2 into methanol via an electrochemical reactor operating at ambient temperature and pressure, said electrochemical reactor simultaneously converts CO2 to methanol by surficial catalytic reaction on the cathode, and methane to methanol by surficial catalytic reaction on the anode. The electrochemical reactor further works with an electrolyte consisting of electrolytic complexes of water-soluble transition metals and small molecules as co-catalyst of the electrocatalytic reactions and facilitator of ionic transfer and solubility of CO2 and CH4 molecules in the electrolyte. The electrochemical reactor is further equipped with zero-gap membrane electrocatalytic electrode assemblies, the cathode and anode comprising two electrocatalytic mesoporous surfaces and being tubular and coaxial, delineating two regions, which are separated one from the other by an ion exchange membrane (27). The tubular electrodes pack vertically together, the external gaps being filled by an insulating material. The packed electrodes are electrically connected to the power source in a parallel electrical circuit.

An anion exchange polymer includes aryl ether linkage free polyarylenes having aromatic / polyaromatic rings in polymer backbone and a tethered alkyl quaternary ammonium hydroxide side groups. This anion exchange polymer may be utilized in an anion exchange process and may be made into a thin anion transfer membrane. An ion transfer membrane may be mechanically reinforced having one or more layers of functional polymer based on a terphenyl backbone with quaternary ammonium functional groups and an inert porous scaffold material for reinforcement. An anion exchange membrane may have multilayers of anion exchange polymers which each containing varying types of backbones, varying degrees of functionalization, or varying functional groups to reduce ammonia crossover through the membrane.

The present invention provides a composite solid electrolyte, a preparation method and an application thereof. The composite solid electrolyte comprises a polymer, an additive and a lithium salt. The addition amount of the additive is 5-25% of the mass of the polymer. The additive is a two-dimensional bimetallic-organic framework material having -NH2 and / or -NO2 groups. The present invention effectively inhibits the migration of anions by using the additive, improves the Li + ion transference number. At the same time, based on the diverse pore structures and surface functions of the additive, the ion transfer path of the solid electrolyte can be shortened, the number of active sites can be increased, and the ionic conductivity of the solid electrolyte and the cycle performance of the battery can be effectively improved.

The present disclosure relates to processes and reactors for producing alkali metals from feed liquids containing alkali metal hydroxides. The method comprises feeding a feed liquid into an electrolytic cell comprising an anode region containing an anode and an anolyte, a cathode region containing a cathode and a catholyte comprising an alkali metal-based conductive salt in an organic solvent, and a barrier separating the anode region and the cathode, the barrier is selective for alkali metal cation transfer from the feed liquid, the alkali metal-based conductive salts in the anolyte and the catholyte sharing the same alkali metal cation; and applying a voltage across the electrolytic cell to transfer the alkali metal cations to the cathode region and precipitate the alkali metal on the cathode. A reactor configured for performing the process includes, among other things, an electrolytic cell including an anode region including an anode, a cathode region including a cathode and configured for operation within an electrolyte organic solvent, and a barrier separating the anode region from the cathode, the barrier being selective for alkali metal cation conduction.

Provided are electrochemical cells and methods of manufacturing these cells. An electrochemical cell comprises a positive electrode and an electrolyte layer, printed over the positive electrode. In some examples, each of the positive electrode, electrolyte layer, and negative electrode comprises an ionic liquid enabling ionic transfer. The negative electrode comprises a negative active material layer (e.g., comprising zinc), printed over and directly interfacing the electrolyte layer. The negative electrode also comprises a negative current collector (e.g., copper foil) and a conductive pressure sensitive adhesive layer. The conductive pressure sensitive adhesive layer is disposed between and adhered to, directly interfaces, and provides electronic conductivity between the negative active material layer and the negative current collector. In some examples, the conductive pressure sensitive adhesive layer comprises carbon and / or metal particles (e.g., nickel, copper, indium, and / or silver). Furthermore, the conductive pressure sensitive adhesive layer may comprise an acrylic polymer, encapsulating these particles.

The invention relates to an electrochemical device comprising: - two electrodes (1); - a spacer (4), placed between the 2 electrodes (1), consisting of a porous polymer material forming a continuous three-dimensional network, having a porosity greater than 70%, preferentially greater than 80%, the pores of which are interconnected, and having charged surface functional groups; - an electrolyte solution (7, 8) comprising a solute in the form of a dissolved salt and impregnating the pores of said spacer (4); - and a device (5) 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 (1), said device being intended for carrying out an ion transfer process within said device.