40 results about "Ionic transfer" patented technology

Apparatus and method for detecting current or potential generated in a liquid sample suitable for use in a chromatography or other liquid sample analytical system. One embodiment is an electrolytic ion transfer device with a signal detector in communication with the electrodes of the transfer device. Another is a combination ion transfer device / electrolyte generator. Another substitutes a detector for the ion transfer device in the combination.

A process for producing a resilient ion exchange membrane. The process comprises the steps of (1) selecting a porous matrix, (2) saturating the porous matrix with a homogenous solution comprising a mixture of: (i) a hydrophilic ionic monomer, (ii) a hydrophobic cross-linking oligomer and / or a comonomer, (iii) a free radical initiator, and (iii) a solvent for solubilizing the hydrophilic ionic monomer, the hydrophobic cross-linking oligomer and / or comonomer, and the free radical initiator into a homogenous mixture. (3) removing excess homogenous solution from the saturated porous matrix, (4) stimulating release of free radicals from the free radical initiator thereby initiating a polymerization reaction to form a cross-linked ion-transferring polymer substantially filling the pores and covering the surfaces of the porous matrix thereby forming a membrane, (5) washing the membrane to remove excess solvent, and (6) optionally bathing the washed membrane in a sodium chloride solution to selectively cross-link sodium or chloride ions to and within the ion-transferring polymer.

Disclosed is a method of inductively coupled plasma mass spectrometry (ICP-MS), comprising steps of introducing at least one sample comprising at least one sample species, and at least one reactive species, into an inductively coupled plasma source, such that at least one molecular adduct ion of the at least one reactive species and the at least one sample species is formed; transferring the at least one molecular adduct ion into a collision cell that is arranged between the inductively coupled plasma source and at least one mass analyzer, transferring the at least one molecular adduct ion, or a product thereof, into the at least one mass analyzer, and analyzing the mass of the at least one molecular adduct ion, or the product thereof, in the at least one mass analyzer. Also disclosed is a mass spectrometer that is adapted to perform the method.

The invention discloses a method for building a K+ ion channel on liquid / liquid interfaces. The method for building the K+ ion channel on the liquid / liquid interfaces comprises the following steps that (1) an alumina template is prepared; (2) the prepared alumina template is fixed on a polished smooth plastic pipe through a conductive adhesive, a three-bifurcation pipe is used as an electrolytic tank, organic phases are first added, then a potassium chloride solution is added in the plastic pipe with the fixed alumina template, the plastic pipe is placed on a three-bifurcation main pipe, the alumina template is right located on the interfaces where two solutions are not dissolved with each other, and therefore the ion channel of the liquid / liquid interfaces is formed. The method can be used for simulating a biological membrane and researching the dynamic process that ions pass through the ion channel, has important significance in researching ion transferring, knowing, understanding and mastering a large number of important physiological processes and revealing metabolic processes of substances and energy in biological bodies, and builds a platform for simulating the ions in a biological system.

An electrocatalyst composition comprising one or more electrically conductive particles of one or more of carbon black, activated carbon, and graphite with one or more catalysts of a macrocycle and a metal adhered and / or bonded to the outer surface of the particles. The catalyst can be comprised, for example, of one or more of acetylacetonate and phthalocyanine and a metal. The metal component used in the electrocatalyst composition is comprised of one or more of iron, nickel, zinc, scandium, titanium, vanadium, chromium, copper, platinum, ruthenium, rhodium, palladium, silver, osmium, iridum, platinum and gold. An ionic transfer membrane having a layer of the electrocatalyst thereon is disposed in a fuel cell in communication with and between current collectors.

The invention belongs to the technical field of electrode material preparation, and particularly relates to a uniformly dispersed ultra-small metal nanoparticle material and a dispersion method thereof. According to the present invention, the reduced graphene oxide is used as a substrate, and the uniformly dispersed ultra-small metal nanoparticle material is obtained through the freeze drying andcalcining processes. According to the invention, the ultra-small metal nanoparticles can be uniformly dispersed on the three-dimensional graphene porous foam substrate, the porous foam structure is beneficial to ion transfer and electrolyte diffusion, so that the utilization rate of the active material can be improved; the graphene substrate effectively prevents agglomeration among nanoparticles,the structural stability of the electrode material is kept, and the volume expansion of the active material in the charging and discharging process is relieved, so that the cycling stability of the electrode material is improved.

The invention relates to hydrated ionic liquid gel and a preparation method and application thereof. The hydrated ionic liquid gel is prepared through the following method that when gel is prepared through enzymatic gelling, hydrated ionic liquid serves as a solvent, contains organic substances of anions and cations and follows the Huffman ion effect, and the hydrated ionic liquid gel is preparedthrough a hydrothermal method. The hydrogel can be used as a protective agent to stabilize a hydration layer of an enzyme, and has good biocompatibility. Compared with the prior art, the preparation process is mild and efficient, materials are environmentally friendly, and the prepared bioelectronics platform has enzymatic electron transfer and ion transfer capacity and can be widely applied to bioelectronics devices such as glucose sensors, motion sensors and energy storage devices.

The invention discloses a preparation method and application of a porous foamed nickel loaded manganese oxide nanosheet array, and relates to the technical field of supercapacitor electrode material preparation, and the preparation method comprises the following steps: dissolving potassium permanganate in deionized water to prepare a solution, and cleaning a foamed nickel net; transferring the potassium permanganate solution and the foamed nickel net into a hydrothermal reaction kettle together, heating, keeping the temperature, carrying out hydrothermal reaction, washing a reaction product after the reaction is finished, drying to obtain foamed nickel with an amorphous manganese oxide precursor growing on the surface, and calcining the foamed nickel in an inert atmosphere, so as to obtainthe catalyst. According to the foamed nickel loaded manganese oxide nanosheet array structure prepared by the invention, the capacitance value of an active material can be effectively improved, the ion transfer path length is shortened, the mechanical stress released in the charging and discharging process is buffered, high specific capacity can be effectively kept without attenuation in high-rate and long-period charging and discharging cycles, and industrial large-scale production is expected to be realized.

The invention relates to an exchange and concentration method for ions in a solution. According to the invention, separation of substances in a solution and an exchange reaction of ions in the solution are realized by combining an anionic membrane and a cationic membrane and providing a channel for ion transfer. The method realizes seawater desalination and recycling and harmless treatment of wastewater under the action of different displacement solutions; and the method is widely applicable to sewage treatment, to ion concentration, deacidification, dealkalization, desalination and saline water desalination in the process of industrial production, to production of sylvite and to mutual conversion between acid and alkali salts.

Memristive devices based on ion-transfer between two meta-stable phases in an ion intercalated material are provided. In one aspect, a memristive device is provided. The memristive device includes: a first inert metal contact; a layer of a phase separated material disposed on the first inert metal contact, wherein the phase separated material includes interstitial ions; and a second inert metal contact disposed on the layer of the phase separated material. The first phase of the phase separated material can have a different concentration of the interstitial ions from the second phase of the phase separated material such that the first phase of the phase separated material has a different electrical conductivity from the second phase of the phase separated material. A method for operating the present memristive device is also provided.

A method is disclosed for concentrating and purifying an eluate brine and producing a purified lithium compound. An extraction eluate, rich in lithium, is directed to a nanofiltration unit or a softening process that removes sulfate and / or calcium and magnesium. Permeate from the nanofiltration unit or the effluent from the softening process is directed through an electrodialysis unit. As the lithium-rich solution moves through the electrodialysis unit, lithium, sodium and chloride ions pass from the solution through a cation-transfer membrane and an anion-transfer membrane to concentrate compartments. A dilute stream is directed through the concentrate compartments and collects the lithium, sodium and chloride ions. The electrodialysis unit also produces a product stream which contains non-ionized impurities, such as silica and / or boron. Concentrate from the electrodialysis unit is subject to a precipitation process that produces a lithium compound that is subsequently subjected to a purification process.

Provided is a thin-film laminate structure of mixed ionic-electronic conductive electrolyte and electrode which, when used as a solid oxide cell electrolyte, enables the ionic transference number to be increased even without using a costly noble metal. The laminate structure of mixed ionic-electronic conductive electrolyte and electrode comprises a dense electrolyte layer (1), a porous electrolyte layer (2), and a porous electrode (3). The dense electrolyte layer (1) has a film thickness of 1 to 15 μm and a relative density of 95 to 100 vol %, and contains a first oxide having mixed ionic-electronic conductivity. The porous electrolyte layer (2) is laminated on the dense electrolyte layer (1), has a film thickness of 1 to 10 μm and a relative density of 30 to 90 vol %, and contains a second oxide having mixed ionic-electronic conductivity. The porous electrode (3) is laminated on the porous electrolyte layer.

The invention relates to a method for exchanging and concentrating ions in a solution. By adopting the combination of an anionic membrane and a cationic membrane or the combination of a cationic resin and an anionic resin, a channel for ion transfer is provided to realize the separation of substances in the solution and the exchange reaction of ions. Under the action of different replacement solutions, seawater desalination, waste water recycling and harmless treatment are realized; the method can be widely applied to sewage treatment and industrial production processes, ion concentration, deacidification, dealkalization, desalination, brine desalination process in the industry production process, the production of potassium salt, sodium salt and alkali, and the mutual conversion between acid, alkali and salts.

Memristive devices based on ion-transfer between two meta-stable phases in an ion intercalated material are provided. In one aspect, a memristive device is provided. The memristive device includes: a first inert metal contact; a layer of a phase separated material disposed on the first inert metal contact, wherein the phase separated material includes interstitial ions; and a second inert metal contact disposed on the layer of the phase separated material. The first phase of the phase separated material can have a different concentration of the interstitial ions from the second phase of the phase separated material such that the first phase of the phase separated material has a different electrical conductivity from the second phase of the phase separated material. A method for operating the present memristive device is also provided.

The invention relates to a weather-resistant oil-water mixed gel platform and a preparation and application thereof, a preparation method comprises the following steps: (1) modifying chondroitin sulfate to prepare modified chondroitin sulfate with double bonds as a cross-linking agent; (2) mixing ethylene glycol and water to prepare an oil-water mixed solution; (3) diluting concentrated sulfuric acid with an oil-water mixed solution to obtain a mixed solvent; (4) mixing the prepared cross-linking agent with a solvent, and adding a monomer and a photo-initiation system to prepare a uniform precursor solution; (5) gelling the obtained gel precursor solution to prepare oil-water mixed gel; and (6) loading mercaptopyridine on the prepared oil-water mixed gel to prepare the oxidation-reduction active oil-water mixed gel. Compared with the prior art, the preparation process is convenient and efficient, the material is green and environment-friendly, and the prepared gel platform has all-weather tolerance and ion transfer capability and can be used for preparing electronic energy storage devices.

The invention provides a 3D printed solid-state battery and a preparation method and application thereof. The 3D printed solid-state battery comprises a positive pole piece, a negative pole piece and a solid-state electrolyte located between the positive pole piece and the negative pole piece, wherein the positive pole piece comprises the following raw materials in percentage, by mass, 70-80% of a positive active material, 5-10% of an electronic conductive agent, 2-10% of an ionic conductive agent, 2-4% of LiTFSI, 1.5-5% of polyvinylidene fluoride, 4-6% of polyoxyethylene and a positive solvent; and the solid content of raw materials of the positive pole piece accounts for 20-50% of the solid content of the positive solvent. The 3D printing technology is adopted, the solid electrolyte with precise surface appearance and internal structure is designed, interface contact between the electrolyte and an electrode is improved, ion transfer between the electrode and the electrolyte is improved, and in addition, lithium ion transmission between the positive electrode and the solid electrolyte is improved by combining with a polymer composite positive electrode added with polyoxyethylene.

The invention relates to a solid-state polymer electrolyte membrane material with continuous ion transfer nanometer channels. The solid-state polymer electrolyte membrane material is a membrane prepared from spherical micelle, which is formed by amphiphilic polymers in a self-assembling way, through fusing and crosslinking; the preparation method comprises the steps of selecting one kind of cosolvent and preparing PCOE-g-MPEG comb-shaped copolymer solution with a certain concentration; selecting one kind of selective solvent, stirring and slowly adding into the comb-shaped copolymer solution; performing dialysis on the obtained mixed solution; weighing a certain amount of lithium salt and adding into the dialysed micelle solution, and performing condensation on a volatile solvent to obtain flocculent accumulated micelle; and performing heat treatment in a drying oven to obtain the solid-state polymer electrolyte membrane. The obtained solid-state polymer electrolyte membrane can form continuous ion transfer channels when the MPEG content is relatively low, so that relatively high electrical conductivity and high mechanical performance can be maintained.

The invention relates to a device for measuring hydrogen conductivity and continuously removing cations in water. The device comprises a conductivity meter, a pH meter, a pure water tank, an ammonia-containing water tank, an electric deamination device, a power supply, a power water pump and a flow meter, wherein the electric deamination device comprises an ammonia removal compartment, a positive electrode chamber and a negative electrode chamber; the positive electrode chamber and the negative electrode chamber are respectively positioned on the left side and the right side of the electric deamination device; and a positive electrode chamber water distribution plate is arranged between the positive electrode chamber and the ammonia removal compartment. The device disclosed by the invention has the beneficial effects that the structure of an electrical desorption method is optimized, and the device for continuously removing cations in water for hydrogen conductivity measurement is designed, so that ammonia water can be efficiently removed. The cation exchange membrane is selected, so that anions can be prevented from entering the ammonia removal compartment, and anion pollution is avoided; and the positive electrode chamber and the negative electrode chamber which are used for providing a direct-current electric field are arranged, and strong acid type ion exchange resin is arranged in the ammonia removal compartment, so that the efficiency of transferring ammonia water to ammonia radical ions in a chemical equilibrium manner is improved, and the removal efficiency is improved.

The invention relates to enzymatic bio-salt gel as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) mixing bio-salt and water to prepare bio-salt solutions with different concentrations; (2) modifying chondroitin sulfate to prepare propenylation modified chondroitin sulfate with double bonds as a cross-linking agent; and (3) mixing the cross-linking agents prepared in the step (1) and the step (2), adding a monomer and a cascade enzyme initiation system to prepare a uniform precursor solution, and gelling the obtained gel precursor solution to prepare the bio-salt gel. Compared with the prior art, the method has the advantages that the preparation process is mild and efficient, the materials are green and environment-friendly, and the prepared bio-salt gel has enzymatic electron transfer and ion transfer capabilities and can be used for glucose sensing.

The invention relates to an electrodialysis membrane recovery process for acid wastewater in viscose fiber spinning, and belongs to the technical field of electrodialysis membrane recovery. The process comprises steps of: pretreatment of low-concentration acid wastewater, pretreatment of an acid bath after spinning, arrangement of electrodialysis membrane components, entrance of electrodialysis membrane components to the acid bath after spinning, ion transfer, and acid bath reuse. Acid wastewater in viscose fiber spinning is treated through the specific electrodialysis membrane recovery process, sulfuric acid and zinc sulfate in the low-concentration of acid wastewater is effectively recovered, the acid bath after spinning achieves the requirements of the acid bath before spinning and is reused, and consumption of alkaline substances and discharge of salt substances are reduced.

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 a method for exchanging and concentrating ions in a solution. The method provides an ion transfer channel through combination of an anionic membrane and a cationic membrane or combined application of anionic resin and cationic resin and achieves substance separation and ion exchange reaction in the solution. Under the effects of different replacement solution, sea water desalination, wastewater recycling and innocent treatment are achieved. The method can be widely applied to sewage treatment, ion concentration, deacidification, dealkalization, desalination and saline water desalting in the industrial production process, production of potassium salt, sodium salt and alkali and mutual conversion among acid, alkali and salt.

The present invention relates to a composition for a gel polymer electrolyte, which includes a lithium salt, a non-aqueous organic solvent, a polymerization initiator, and an oligomer containing a polycarbonate-based repeating unit, a gel polymer electrolyte in which mechanical strength and ion transfer capability are improved by polymerization of the composition for a gel polymer electrolyte, and a lithium secondary battery in which external impact and stability during high-temperature storage are improved by including the gel polymer electrolyte.

The invention discloses a method for building a K+ ion channel on liquid / liquid interfaces. The method for building the K+ ion channel on the liquid / liquid interfaces comprises the following steps that (1) an alumina template is prepared; (2) the prepared alumina template is fixed on a polished smooth plastic pipe through a conductive adhesive, a three-bifurcation pipe is used as an electrolytic tank, organic phases are first added, then a potassium chloride solution is added in the plastic pipe with the fixed alumina template, the plastic pipe is placed on a three-bifurcation main pipe, the alumina template is right located on the interfaces where two solutions are not dissolved with each other, and therefore the ion channel of the liquid / liquid interfaces is formed. The method can be used for simulating a biological membrane and researching the dynamic process that ions pass through the ion channel, has important significance in researching ion transferring, knowing, understanding and mastering a large number of important physiological processes and revealing metabolic processes of substances and energy in biological bodies, and builds a platform for simulating the ions in a biological system.