59 results about "Ion transfer" patented technology

The invention belongs to the technical field of thermal batteries, and particularly relates to a preparation method and application of a copper fluoride-based heterojunction thermal battery positive electrode material. According to the invention, fluorides with different phases and different band gaps are utilized to form a heterogeneous interface microcosmically, an electron circulation directional electric field is formed at the inhibition interface, migration of electrons and ions is accelerated, and the ion characteristics of the fluorides are improved. According to the thermal battery positive electrode material provided by the invention, the voltage of a unit battery can be remarkably increased, charge and ion transfer of the positive electrode material can be improved, so that the material can bear large pulse current and has relatively high specific capacity, and the material has good adaptability to existing electrolytes in the market at present and has a relatively high voltage platform and relatively high specific capacity. According to the invention, the conductivity of the reaction product is further enhanced by using the copper elementary substance generated by the preferential reaction of copper fluoride, and an ion transmission channel is constructed by using the copper elementary substance generated by the preferential reaction of copper fluoride as a support frame, so that the copper fluoride-based composite material has high-potential and high-power discharge capability.

The application discloses a diaphragm-free electrolytic cell, which comprises a cell body (1) with an electrode chamber (110), a pair of electrode sheets (3) arranged at intervals in the electrode chamber (110), and a cathode sheet (3a) and an anode sheet (3b). The electrode chamber (110) is provided with an insulating screen (4) for separating the cathode sheet (3a) and the anode sheet (3b). The insulating screen (4) is provided with a plurality of screen holes (411) for fluid. Compared with the prior art, the diaphragm-free electrolytic cell can avoid short circuit caused by the contact between the cathode sheet and the anode sheet, accelerate exhaust, inhibit scale deposition, and accelerate ion transfer.

A rechargeable battery that is configured to bring two electrodes together when charging or discharging by moving one electrode towards the other and having the two electrodes be apart when not charging or discharging, thus lowering the intercalation of the battery as set up in the customary manner and likely having more charge / discharge cycles and faster charge time as likely the ion transfer throughput can be made larger and there may even be multiple and / or redundant ion transfer paths.

This invention discloses an electrolyte, battery, battery pack, and battery system for a lithium (sodium) ion battery, comprising an ionic electrolyte containing lithium borate ester (sodium salt) or lithium imine ester (sodium salt); an isoelectric point solvent of triethylamine ester, triethanolamine ester, borate ester, or phosphate ester; electrolyte 20%–50%, solvent 50%–80%. The ionic electrolyte developed in this invention is an organic compound with no ignition point and high safety, and can be used under operating conditions with voltages greater than 5 volts. The voltage of a typical lithium-ion battery is 3.4 volts. Furthermore, the electrolyte used in this invention is used in very small quantities, thus reducing overall cost and resulting in higher economic benefits. The zwitterionic polar solvent of this invention separates molecules into ions based on the charge carried by the material molecules. Due to its isoelectric point, it provides fast charging and discharging capabilities, increasing the ion transfer rate by 2-3 times or more than that of typical carbonate solvents.

A combined ion discharge tube and an ion guide system is disclosed. The ion discharge tube comprises of a cathode tube and an anode surface. The discharge tube acts as the cathode, whereas the anode can be any number of different configurations. In one embodiment the discharge tube is set inside a quadrupole ion guide, with the walls of the ion guide being the anode. In other embodiments, the discharge tube is placed inside the rods of the quadrupole and the inner walls of the rods or a separate plate acting as the anode. In all configurations, the ions are formed by the discharge tube and are introduced into the RF confinement of an ion guide to increase ion transfer efficiency.

The application discloses an insulating partition net for an electrolytic cell, characterized in that the insulating partition net (4) is used for partitioning between two electrode sheets (3) of the electrolytic cell, the insulating partition net (4) is flat, and a flow channel (40) in a zigzag arrangement is formed on the surface of the insulating partition net (4). The application further discloses an electrolytic cell provided with the insulating partition net. Compared with the prior art, the application can improve the turbulence effect, thereby accelerating exhaust, inhibiting scale deposition and accelerating ion transfer.

The present application relates to the technical field of all-solid-state lithium metal battery, and particularly relates to a solid-state polymer electrolyte and a preparation method and application thereof. In the present application, trifluoroethanol is used to fluorinate eggshell membrane powder in natural eggshell, which is used as a polyethylene oxide-based solid-state polymer electrolyte additive. This can adjust the network structure of the polymer, enhance the electrochemical and mechanical performance of the solid-state electrolyte, inhibit lithium dendrite growth, and enhance the cycle performance of the lithium metal battery. The lithium ion transfer number of the improved solid-state electrolyte battery is determined by chronamperometry, and the lithium ion transfer number is higher, and it is easier to generate fluorinated lithium and lithium oxide, and better inhibit the growth of lithium dendrites. The addition of trifluoroethanol to fluorinate the eggshell membrane solid-state electrolyte in the natural eggshell makes the lithium symmetrical battery and the lithium iron phosphate full battery exhibit excellent performance in various cases.

This invention relates to the field of electrochemical detection technology, specifically to a Y-type peptide-modified ion-selective electrode, comprising an electrode substrate, a solid-state transduction layer, an ion-selective membrane, and an antifouling and antibacterial layer. A conductive porous metal-organic framework (MOF) material is used as the solid-state transduction layer, whose large specific surface area provides numerous active sites for ion transfer, promoting ion transport and conversion. By employing different ion exchange membranes, the detection of multiple different ions can be achieved. Simultaneously, a peptide is used as an antifouling and antibacterial layer attached to the surface of the ion-selective membrane, modifying the ion-selective electrode and integrating both anti-adhesion and bactericidal properties. This solves the problem of biofouling caused by biomass adhesion or growth on the electrode surface during seawater detection, providing excellent antifouling performance and enabling more accurate ion detection. The invention also provides a method for preparing the ion-selective electrode and its applications.

The electrochromic device includes a first transparent substrate, a first transparent conductive layer, an ion storage layer, an ion transfer layer, an electrochromic layer, a second transparent conductive layer, and a second transparent substrate which are sequentially stacked, where the first transparent conductive layer includes at least two first conductive portions, the second transparent conductive layer includes at least two second conductive portions, and an extension direction of the at least two first conductive portions and an extension direction of the at least two second conductive portions are configured to intersect with each other.

A method of performing mass spectrometry includes accumulating ions resulting from components eluted from a chromatographic column over an accumulation time and transferring the accumulated ions to a mass analyzer. During an acquisition, a mass spectrum is acquired of detected ions originating from the transferred ions. An elution profile is obtained from a series of acquired mass spectra including the acquired mass spectrum and a plurality of previously acquired mass spectra. The elution profile includes a plurality of detection points representing a change in intensity of the detected ions over time. A current signal state of the elution profile is classified based on a subset of detection points included in the plurality of detection points. The accumulation time is set for a next acquisition of a mass spectrum based on the classified current signal state of the elution profile.

An oil-based separator and a manufacturing method therefor, and a secondary battery. The oil-based separator comprises a base membrane and a coating disposed on at least one surface of the base membrane, and the coating comprises a first binder, a second binder, and an inorganic filler; the mass percentage of the first binder is A, and the mass percentage of the second binder is B, wherein A and B satisfy the relationship: 0.25≤A / B≤4; the particle size D50 of the first binder is RA, and the particle size D50 of the second binder is RB, wherein RA and RB satisfy the relationship: 0<RA / RB≤0.6. In the oil-based separator provided by the present invention, by controlling the relationships of the particle sizes and the mass percentages of the two binders, the binding power can be effectively improved, and the pores of the separator are not easily blocked, thereby accelerating ion transfer, and improving charging and discharging speed.

The application discloses an electrically controlled ion extraction membrane and a preparation method and application thereof, and the electrically controlled ion extraction membrane comprises a support layer and an electrically active extraction layer, the support layer is composed of an ultrafiltration membrane, the electrically active extraction layer is composed of a porous carbon-based membrane, the support layer and the electrically active extraction layer are subjected to suction filtration and vacuum drying to form an ultrafiltration / porous carbon-based composite membrane, the composite membrane is immersed in an extractant to be adsorbed and saturated, and the electrically controlled ion extraction membrane is formed. The application realizes selective separation of lithium ions in salt lake brine, underground brine or concentrated seawater; the extractant in the pore channel of the electrically controlled ion extraction membrane is insoluble in water, is easy to separate, is stable in property, has strong affinity with lithium ions, can selectively extract lithium ions in brine, and then the lithium ions extracted on the membrane are back-extracted into a back-extraction liquid, so that the lithium ion extraction and back-extraction processes are continuously operated; ion transfer is strengthened by using an electric field, a chemical equilibrium of traditional support liquid membrane extraction is broken, and the separation rate is fast; and the application is easy to industrialize.

The application belongs to the technical field of anion exchange membranes, aims to improve the ion transfer performance and size stability of anion exchange membranes, and provides a polyoxafluorene indole type anion exchange membrane and a preparation method thereof.The preparation method synthesizes polyoxafluorene indole type materials with good stability and electrical conductivity, then ion liquid is grafted to the polymer to obtain polyoxafluorene indole type quaternary ammonium polymer, and a membrane is prepared.Through testing, the prepared membrane better balances the problem between stability and electrical conductivity, and can be applied to neutral flow batteries.The polyoxafluorene indole type anion exchange membrane prepared by the method can exhibit very excellent battery performance, the energy efficiency is much better than that of a commercial membrane AMVN, and the stability is very good, and the efficiency does not obviously decrease after 1000 cycles of battery circulation.

The application relates to a multi-pulse field ion implantation compression ion transfer tube in an analysis instrument, which comprises an insulating inner cylinder, a BN ion gate and a Faraday disc; the BN ion gate divides the insulating inner cylinder into two areas, namely an ionization reaction area and a transfer area; a gas inlet is arranged at the position close to the Faraday disc in the transfer area, a gas outlet is arranged at the position far from the BN ion gate in the ionization reaction area, and a sample inlet is arranged at the position close to the BN ion gate; an electric potential U1 is applied to the BN ion gate when the BN ion gate is opened, the electric field intensity of the ionization reaction area is E1, and the electric field intensity of the transfer area is E2; a metal grid net which is perpendicular to the axis direction of the ion transfer tube is arranged at the position with a distance L1 (the distance in the axis direction of the ion transfer tube) from the BN ion gate in the ionization reaction area and is used as a pulse ion implantation grid net; an electric potential U1+El*L1+P1 is applied to the pulse ion implantation grid net; a pulse compression metal grid net which is perpendicular to the axis direction of the ion transfer tube is arranged at the distance L2 (the distance in the axis direction of the ion transfer tube) from the BN ion gate in a transfer area; and an electric potential U1-E2*L2+P2 is applied to the pulse compression metal grid net.

A single-layer dielectric thin film with ceramic particles embedded in organic material in a battery structure; wherein a solid or semi-solid lithium battery comprises a negative electrode, a positive electrode, and the dielectric thin film layer connected between the negative electrode and the positive electrode; A dielectric thin film comprising: A polymer material as a base material for the dielectric thin film consisting of a mixture of PVDF-HFP (polyvinylidene fluoride hexafluoropropylene copolymer), HNBR (hydrogenated nitrile butadiene rubber) and SN (succinonitrile); The SN in the polymer material acts as a plasticizer. The SN added to the PVDF-HFP disperses the polymer structure and reduces its crystallization. The SN dissociates the lithium salts of the dielectric thin film and promotes ionic conductivity. Lithium salts dispersed in the polymer material lower the energy level of the lithium ions transferred in the polymer material and increase their stability and conductivity. A variety of ceramic composite particles dispersed in the polymer material increase the ionic conductivity and strength of the dielectric thin film, with each of the ceramic composite particles comprising the following: A ceramic particle with high lithium-ion conductivity serves to guide and distribute the lithium ions as they pass through the dielectric thin film. This allows the ceramic particle to form uniformly distributed lithium-ion channels within the dielectric thin film. A dopamine layer surrounds the outer surface of the ceramic particle, thus forming the first particle. The dopamine layer consists of several copolymerized dopamine molecules. A PVDF (polyvinylidene fluoride) layer surrounds the outside of the first particle. wherein the composite ceramic particles are dispersed in the polymer material; the lithium salts added to the polymer material serve to increase the conductivity of the lithium ions and the density of the lithium ions.

The application provides a light-driven solid-state electrolyte membrane and an integrated flexible light-assisted solid-state sodium metal battery based on the same, and belongs to the technical field of batteries. The battery comprises a light-driven solid-state electrolyte membrane and a photoelectrochemical storage positive electrode. The light-driven solid-state electrolyte membrane comprises polyethylene oxide, a heterojunction filler, a wood fiber soft filler and a sodium salt, wherein the heterojunction filler is a composite material of copper oxide and indium oxide. The photoelectrochemical storage positive electrode comprises an indium selenium oxide film, titanium dioxide and sodium vanadium phosphate. By incorporating a trace amount of heterojunction into the polyethylene oxide electrolyte, the application utilizes the photogenerated electric field generated by the light-driven mechanism to reduce the interface impedance, effectively improves the ionic conductivity and the sodium ion transfer number; and in combination with the energy level matched photoelectrochemical storage positive electrode, the application maximizes the use of photogenerated carriers and enhances the interface compatibility between the electrolyte and the positive electrode; and the battery assembled by the application exhibits excellent cycle stability.

The invention discloses a cation modified electrolyte and a lithium ion battery, and belongs to the technical field of battery materials, the cation modified electrolyte comprises a lithium salt, an organic solvent and an additive used for adjusting a lithium ion solvation structure and an interface structure; the additive is inorganic salt of alkali metal and / or alkaline earth metal; and anions in the additive are the same as anions in the lithium salt. The inorganic salt of alkali metal and / or alkaline earth metal is introduced as the electrolyte additive, and due to better microcosmic ion migration balance, a solid-liquid interface film forming component is improved, and the inorganic salt component is further increased, so that a lithium ion solvation structure and an interface structure can be adjusted; the ionic conductivity, the ion transfer number and the diffusion coefficient of the electrolyte can be improved to a certain extent, and the cycling stability and the capacity retention ratio of the lithium ion battery can be remarkably improved.

The application discloses an insulating spacer for an electrolytic cell, characterized in that: the insulating spacer (4, 4') is used for separating between adjacent diaphragms (2) and electrode sheets (3), the side of the insulating spacer (4, 4') is provided with scraping parts (410, 410') capable of rubbing contact with the adjacent diaphragms (2) or electrode sheets (3); or the insulating spacer (4, 4') is used for separating between two electrode sheets (3), the side of the insulating spacer (4, 4') is provided with scraping parts (410, 410') capable of rubbing contact with the adjacent electrode sheets (3). The application further discloses an electrolytic cell provided with the insulating spacer. Compared with the prior art, the insulating spacer can realize the scraping and scale removing functions, and can improve the turbulence effect, so as to accelerate exhaust, inhibit scale deposition and accelerate ion transfer.

Electrochemical cells and methods of preventing overheating of the same are disclosed. An electrochemical cell may include a cathode and an anode. The anode may include a lithium alloy. The anode may be configured to reduce a maximum rate of ion transfer between the anode and the cathode in response to an occurrence of a fault condition. The lithium alloy may comprise at least 70 weight percent lithium to 99 weight percent lithium.

This utility model discloses a visualized micro-experimental device, including a transparent electrolysis chamber, two conductive electrodes, a visualization monitoring module, a transparent gas collecting bottle, a transparent tail gas absorption bottle, a first conduit, a second conduit, a third conduit, and a fourth conduit. The transparent electrolysis chamber is divided into a spatially isolated cathode chamber and an anode chamber. The two conductive electrodes are respectively inserted into the cathode chamber and the anode chamber. The visualization monitoring module is used for visualized qualitative and quantitative analysis of ion transfer. One end of the first conduit is inserted into the upper outlet of the anode chamber, and the other end is inserted into the upper inlet of the transparent gas collecting bottle. One end of the second conduit is inserted into the upper outlet of the transparent gas collecting bottle, and the other end is inserted into the bottom of the transparent tail gas absorption bottle. The third conduit is inserted into the upper outlet of the transparent tail gas absorption bottle. The fourth conduit is inserted into the upper outlet of the cathode chamber. This device solves the technical problems of high safety risks, low level of intelligence, poor environmental performance, and lack of process monitoring in traditional electrolysis experimental devices.

Ultra-conductive solid-state polymer electrolytes are disclosed. A method of synthesizing the electrolytes involves doping graphene oxide sheets with ion transfer mediators, mixing the doped graphene oxide sheets into a base polymer electrolyte, and reorienting the doped graphene oxide sheets by applying an electrical field and / or a magnetic field while the polymer mixture is fluidal.

A coated capillary tube having a tunable resistance in an ion transfer device, including an inlet end in communication with an atmospheric-pressure ion source, an outlet end in communication with a vacuum region of a mass spectrometer, a body elongated along an axis from the inlet end to the outlet end, and an inside surface defining a bore having an inner diameter is disclosed. The coated capillary tube also includes a resistive coating on the inside surface of the capillary tube, in which the resistive coating includes at least one layer comprising oxides or nitrides of a metal and discrete metal particles of a different metal embedded therein.

The application belongs to the field of water treatment equipment and application technology, and particularly relates to a selective electrodialysis device and application thereof. The selective electrodialysis device comprises an electrodialysis cell, an anode and a cathode arranged on the two sides of the electrodialysis cell, and a cation exchange membrane and an anion exchange membrane arranged between the anode and the cathode in sequence. The cation exchange membrane is made of sulfonated polybenzimidazole as a base material, and the surface of the cation exchange membrane is coated with polystyrene sodium sulfonate containing porous micro-nano materials. A protective layer containing polydiphenylpiperidine is coated on the side of the cation exchange membrane facing the anode. The anion exchange membrane is made of quaternary amine polyfluorosulfone or polyether sulfone as a base material, and the surface of the anion exchange membrane is coated with polydimethyl diallyl ammonium chloride. The device can efficiently separate monovalent ions and polyvalent ions, the functionalization of the ion exchange membrane increases the membrane charge density, promotes the rapid migration of ions under the action of an electric field, and improves the ion transfer rate. The device is stable in operation, has a high separation rate and a high current efficiency.

The present application provides a positive electrode material, a method for preparing the same, a positive electrode sheet, and a all-solid-state battery. The positive electrode material includes a lithium-rich manganese-based positive electrode active material and a coating layer covering at least a part of the surface of the lithium-rich manganese-based positive electrode active material. The molecular formula of the lithium-rich manganese-based positive electrode active material is xLi 2-α MnO3·(1-x)Li 1-β Ni a Co b Mn c O 2-γ where a + b + c = 1, 0 < α + β ≤ 0.2, 0 < γ ≤ 0.1, 0 < x < 1. The coating layer satisfies the following formulas 1 and 2: 0.5×10 -3 S / cm ≤ T ≤ 5×10 -3 S / cm (Formula 1), H ≤ 10 -9 S / cm (Formula 2), where T is the ionic conductivity of the coating layer and H is the electronic conductivity of the coating layer. The positive electrode material according to the present application solves the problem of low initial coulombic efficiency of the lithium-rich manganese-based positive electrode material and improves the interface ion transfer efficiency and the stability of the positive electrode material.

The invention belongs to the field of controllable generation methods of amine aerosol particles and CO2 gas-solid reaction research, and relates to a controllable generation method of high-stability amine nano-particles and application of the high-stability amine nano-particles in CO2 gas-solid reaction research, and the controllable generation method comprises the following steps: 1) putting an amine compound and a sample into an amine aerosol generation device for heating, gas-phase organic matter impurities are removed through an activated carbon decomposing agent, and amine aerosol mixed particles are obtained; (2) introducing the amine aerosol mixed particles obtained in the step (S1) into a double-layer flow tube reaction device to carry out a multi-phase reaction with CO2, introducing a part of products after the reaction into an amine particulate matter particle size and concentration online detection device to carry out detection, and introducing the other part of products into a CO2 adsorbent to remove residual CO2 so as to obtain the product amine aerosol particles; and (3) extracting the product amine aerosol particles obtained in the step (2) into a solvent electrospray, and introducing the product amine aerosol particles into an HRMS on-line detection unit through an ion transmission tube for detection after the product amine aerosol particles are ionized.

The present application belongs to the technical field of new energy batteries, and particularly relates to a negative electrode composite active material, a preparation method and application. The material comprises: a carbon nanofiber film, which is provided with pores; silicon-based nanoparticles, which are loaded on the surface and pores of the carbon nanofiber film; and an amorphous carbon outer layer, which is coated on the carbon nanofiber film and the silicon-based nanoparticles. The carbon nanofiber film has pores, which not only can provide a certain expansion space, effectively alleviate the expansion of lithium ions in the embedding and de-embedding process, but also can increase the ion transfer channel and improve the ion conductivity; the amorphous carbon outer layer can further inhibit the expansion of the silicon-based material and effectively improve the cycle life; and the coating of the amorphous carbon can build an internal electric field between the amorphous carbon-carbon fiber / silicon particles, improve the conductivity and enhance the battery rate performance.

This invention discloses a method for preparing a 3D graphitized ultrafine fiber conductive network self-supporting lithium battery, relating to the field of lithium battery cathode material technology. This invention utilizes electrospinning technology to prepare three-dimensional (3D) network structure polyimide (PI) nanofibers, which, after graphitization (GPI), are used as a substrate to support the NCM811 cathode material. This method offers several advantages: First, the PI prepared by electrospinning can form a long-range, continuous three-dimensional electron network, facilitating electron and ion transfer and effectively alleviating the volume expansion and cycle performance degradation issues of NCM811 electrode materials. Second, it eliminates the need for conductive additives and aluminum foil current collectors, achieving a self-supporting electrode material. Third, because the PI fibers prepared by electrospinning have excellent flexibility, they can be used in flexible lithium-ion batteries, directly assembled into energy storage and conversion devices. Therefore, combining electrospinned graphitized GPI to support NCM811 battery materials is a good strategy for improving the electrochemical performance of NCM811.

The application discloses a kind of physical crosslinking electrically controlled ion glue, composite membrane electrode and preparation method prepared thereby.Polyvinylidene fluoride binder is added to N-methylpyrrolidone solution, and is dissolved by being stirred sufficiently to prepare polyvinylidene fluoride binder solution;Slowly add polyacrylic acid binder with ion transfer function in the above binder solution;Two kinds of binders are blended by heating to make them produce physical crosslinking, i.e., to prepare stable and uniform physical crosslinking electrically controlled ion glue.The physical crosslinking electrically controlled ion glue is used to prepare high ionic conductive composite membrane electrode, compared with traditional polyvinylidene fluoride binder, hydrogen proton on the carboxylic acid functional group of electrically controlled ion glue can occur ion exchange reaction with lithium ion in solution, promote the transfer of lithium ion on the interface of composite membrane electrode, so as to be beneficial to improve the separation performance of lithium ion of composite membrane electrode.

The present invention provides a composite cathode for an all-solid-state secondary battery, characterized by comprising a cathode active material and a composite electrolyte comprising a sulfide-based solid electrolyte and a transition metal-containing chloride-based solid electrolyte. By providing stable and excellent electron / ion transfer pathways at high voltage, the composite cathode is capable of improving the lifespan and charge / discharge characteristics of the all-solid-state secondary battery.

The application provides a cyanide covalent organic framework material and a preparation method thereof, and a functional diaphragm and a preparation method thereof, and belongs to the technical field of diaphragms.The application provides a cyanide covalent organic framework material, which has a chemical structure as shown in formula I.The COF material provided by the application contains a cyanide functional group, can realize enrichment and acceleration of anion transfer, promote decomposition of lithium salt anions, form a stable SEI rich in LiF, inhibit growth of lithium dendrites, and improve safety and interface stability of a battery; one-dimensional nano open pores of the COF material can significantly improve the lithium ion transfer rate of a compact modification layer, and improve ion conductivity and cycle performance of the battery.