104 results about "Ion transfer" patented technology

A mass spectrometry system that includes first and second ion sources that produce ions, the ions produced by the second ion source being calibration ions to calibrate the mass spectrometry system; an ion transfer device that receives the ions as a continuous stream during a first time period and forms a first ion packet as a single ion packet, such that during a second time period when the ion transfer device delivers the first ion packet, it receives the ions as a continuous stream to form a second ion packet by accumulating the incoming ions in another single ion packet, such that the ion transfer device separately delivers the formed ion packets at a frequency in a range from 1 to 1000 Hz; and a mass analyzer that separates the ions in the ion packets based on the mass-to-charge ratio of the ions.

The invention provides a composite positive electrode material and a preparation method thereof, a positive plate and a lithium ion battery. The composite positive electrode material comprises a lithium-rich manganese-based positive electrode material and a perovskite type oxide coated on the surface of the lithium-rich manganese-based positive electrode material, the chemical formula of the perovskite type oxide is Li2x-ySr1-xZr1-yNbyO3, x is equal to 3y / 4, and y is equal to 0.5-0.7. The perovskite type oxide has relatively high ionic conductivity, a relatively wide electrochemical platform and a stable structure, and is coated on the surface of the lithium-rich manganese-based positive electrode material, so that on one hand, the contact between the lithium-rich manganese-based positive electrode material and an electrolyte is reduced, the generation of side reactions is reduced, and the service life of the lithium-rich manganese-based positive electrode material is prolonged; and on the other hand, the first coulombic efficiency can be improved. And the conductivity of the lithium-rich manganese-based positive electrode material can be improved, the lithium ion transfer impedance of a liquid phase and a solid phase can be reduced, and the rate capability can be enhanced.

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 invention relates to the technical field of sodium ion batteries, in particular to an electrolyte and a sodium ion battery. The electrolyte comprises a sodium salt, an organic solvent and an inorganic aluminum salt additive, the inorganic aluminum salt additive comprises any one or more of aluminum trifluoromethanesulfonate, aluminum bis (fluorosulfonyl) imide, aluminum bis (fluorosulfonyl) imide, aluminum fluoride and aluminum chloride; the organic solvent comprises a carbonic ester solvent. The inorganic aluminum salt additive is introduced into the electrolyte provided by the invention, so that a uniform solid electrolyte interface (SEI) film containing Al2O3 / Al can be generated on a negative electrode, sodium ion transfer impedance is effectively reduced, and rate capability and cycle performance of the sodium ion battery are remarkably improved.

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.

An ion analysis apparatus, comprising: an ionization source configured to generate a beam of ions; a trapping device configured to receive the beam of ions and to axially transfer ions downstream; a first quadrupole mass filter configured to receive the ions transferred from the trapping device and to transfer at least a first subset of the received ions; a segmented linear quadrupole ion trap configured to receive the at least first subset of ions transferred from the first quadrupole mass filter, to perform a first processing step on the received at least first subset of ions and to transfer the processed ions; a second quadrupole mass filter configured to receive the processed ions transferred from the segmented linear quadrupole ion trap and to transfer at least a second subset of the processed ions; a collision cell configured to receive the at least second subset of ions transferred from the second quadrupole mass filter, to perform a second processing step on the received at least second subset of ions and to transfer the processed ions; a mass analyzer configured to receive the processed ions from the collision cell and to mass analyze the received processed ions.

The invention provides an electrolyte, a battery and a formation method of the battery, and relates to the technical field of batteries. The electrolyte adopts ethylene carbonate (EC) and dibutyl carbonate (DBC) as a solvent or a part of the solvent, and the volume fraction of the dibutyl carbonate (DBC) in the organic solvent is not less than 20%. The high polarity of the EC is beneficial to maintaining dissociation of the lithium salt, so that the lithium salt can be decomposed into lithium ions and anions, and the DBC has the characteristics of low viscosity and low polarity, can promote migration of the lithium ions and the anions at low temperature, promotes more anions to participate in a solvation structure, is beneficial to forming an anion-dominated solvation structure, and improves the stability of the lithium ion battery. Further, a characteristic SEI film with high ionic conductivity and mechanical strength is formed, the ion transmission efficiency of the battery is improved, and the cycle performance and the rate capability of the battery are further improved.

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.

The invention discloses an aluminum-cerium oxide solid solution, a proton ceramic fuel cell and a preparation method of the proton ceramic fuel cell, and relates to an oxide solid solution and ceramic fuel cell technology. The preparation method of the aluminum cerium oxide solid solution comprises the following steps: dissolving an aluminum salt and a cerium salt in water to prepare a uniformly mixed solution; dropwise adding a complexing agent solution into the mixed solution until the mixed solution becomes uniform colloid; and continuously heating the colloid, stirring, drying, and roasting to obtain the aluminum cerium oxide solid solution. The aluminum-cerium oxide solid solution crystal in the preparation method is high in purity and free of impurity phases, the oxygen vacancy concentration of the aluminum-cerium oxide solid solution crystal is higher than that of traditional oxide electrolyte materials doped with cerium oxide, zirconium oxide and the like, and the aluminum-cerium oxide solid solution crystal is suitable for being used as a proton ceramic fuel cell electrolyte. The ion and proton conduction in the proton ceramic fuel cell can be enhanced, and the ion transmission activation energy is reduced, so that the medium and low temperature electrochemical performance of the cell is obviously improved.

The invention provides a secondary battery and a preparation method thereof, an energy storage system and electric equipment, and relates to the technical field of energy storage. The diaphragm comprises a polyvinyl base film, a first coating and a second coating, the first coatings are arranged on the surfaces of the two sides of the polyethylene base film, the materials of the first coatings comprise first carbon nanotubes, paraffin layers and polydopamine-polyethyleneimine layers, and polydopamine in the polydopamine-polyethyleneimine layers is connected to branched chains of polyethyleneimine through carbon-nitrogen bonds; the second coating is arranged on the surface of one side, far away from the polyvinyl base film, of the first coating, and the material of the second coating comprises a second carbon nanotube and a polyurethane layer coated on the surface of the second carbon nanotube. The first coating and the second coating are constructed on the surface of the polyethylene-based membrane, so that the thermal stability of the diaphragm and the wettability of an electrolyte are improved, and the ion transmission impedance is reduced. When the diaphragm is applied to the secondary battery, the rate capability, the cycling stability, the thermal stability and the safety of the secondary battery can be improved.

The invention relates to a preparation method and application of a PVDF-based composite electrolyte membrane, and belongs to the technical field of lithium battery electrolyte. The preparation method of the PVDF-based composite electrolyte membrane comprises the following steps: mixing dehydrated zeolite and lithium chloride, and replacing a sodium element in the dehydrated zeolite with a lithium element to prepare lithium zeolite; and preparing the lithium zeolite, polyvinylidene fluoride and lithium salt into an electrolyte membrane. The PVDF-based composite electrolyte membrane prepared by adopting the method has good ionic conductivity, relatively low activation energy and relatively high exchange current density and critical current density, can promote uniform deposition of lithium when being used for a lithium battery, has relatively high lithium ion transfer number and relatively wide electrochemical window, and can be applied to the lithium battery. And the lithium ion battery has relatively good cycle performance under different current densities, and shows excellent electrochemical performance.

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 invention provides a lithium ion battery electrolyte and an application thereof. The electrolyte at least comprises the following components: a lithium salt; the solvent comprises a first solvent, and the first solvent comprises at least one of fluorocarboxylic acid esters; and an additive, the additive comprising a first additive, the first additive comprising 2-(thiophenyl) ethyl acrylate. The lithium ion battery electrolyte provided by the invention can promote rapid transmission of lithium ions, reduce side reactions and improve the high-temperature cyclic gas production performance of the battery in a high-voltage rapid charging scene.

The invention relates to a membrane (10) including: - a porous substrate (30) including two opposite main surfaces (32, 34), - a selective ion transfer layer (20) including sheets (22) of a nanomaterial extending over one of the two main surfaces (32, 34) of the porous substrate, the nanomaterial being of the formula: XMNO14, M being of the formula As3(1-y-z)Sb3yBi3z, and N being of the formula P2kAs2(1-k), y, z and k being numbers ranging from 0 to 1 with y+z less than or equal to 1, X being of the formula H3(1-x)A3x, A being an alkali, an ammonium cation or a cation derived from a water-soluble hydroxide salt or a mixture thereof, x being a number ranging from 0 to 1.

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.

An electrochromic aperture, which comprises a first transparent substrate (11), a first transparent conductive layer (12), an ion storage layer (13), an ion transfer layer (14), an electrochromic layer (15), a second transparent conductive layer (16), and a second transparent substrate (17). The ion transfer layer (14) is a solid electrolyte layer. Also provided is a method for manufacturing the electrochromic aperture, relating to an etching operation after coating on the ion storage layer (13) and the electrochromic layer (15) is finished. Also provided is a lens modules having the electrochromic aperture.

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.

The present invention discloses an in-situ gelled double cross-linked polymer electrolyte, a preparation method and an application thereof. A polymer nanofiber membrane is prepared by an electrostatic spinning method, a cross-linked nanofiber membrane is obtained by heat treatment, and then a mixed solution of an organic electrolyte and a cross-linking agent is impregnated to obtain a double cross-linked polymer solid electrolyte membrane material through in-situ cross-linking gelation. The double cross-linked polymer solid electrolyte membrane material has high porosity, high liquid absorption rate, excellent mechanical strength and thermal stability, and good electrochemical properties. It has high ionic conductivity and lithium ion transfer number, high oxidative decomposition potential, and has excellent rate performance and cycle performance when used in lithium-ion batteries, thus solving the problems of low ionic conductivity and poor mechanical properties of polymer electrolytes.

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.

A mass spectrometry system that includes an ion source that produces ions, an ion transfer device, and a mass analyzer. The ion transfer device includes a first ion transfer device that receives ions from an inlet and transfers ions to an outlet, and includes a plurality of first plate electrodes that are stacked, each plate electrode having a hole with a same diameter, and separated by a first inter-electrode spacing such that the hole diameter is between 1 to 100 times the first inter-electrode spacing; a second ion transfer device receives and transfers the ions, and includes a plurality of second plate electrodes with holes having a same diameter, separated by a second inter-electrode spacing such that the hole diameter is between 3 to 100 times the second inter-electrode spacing; and a third ion transfer device includes a plurality of third plate electrodes with holes having a plurality of diameters.

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.