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539results about How to "High ion conductivity" patented technology
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Polymer porous membrane, preparation method thereof, polymer electrolyte, polymer battery and preparation method of battery
ActiveCN102035043AImprove rate discharge performanceImprove cycle performanceFinal product manufactureSynthetic resin layered productsPolymer electrolytesPolymer science
The invention provides a polymer porous membrane, a preparation method of the polymer porous membrane, a polymer electrolyte, a polymer battery and a preparation method of the polymer battery. A carbon material is dispersed in the polymer porous membrane, so that the degree of crystallization of a polymer which constitutes the polymer porous membrane is lowered and the liquid absorption of the polymer porous membrane is increased; the liquid absorption rate, liquid holding capability and ionic conductivity of the polymer porous membrane are increased; interface impedance is reduced, battery magnification discharging performance and the circulating performance of the battery are enhanced; simultaneously, the battery prepared by the method has excellent high temperature circulation and storage performance and low expansion ratio at a high temperature and further meets the development requirement of the polymer battery. Simultaneously, the preparation method is simple and is easy to implement and the prepared battery has high performance.
Owner:SHANGHAI BYD
All-solid state electrochromic device preparation method and prepared electrochromic glass
ActiveCN104898344AReduce defectsImproved electronic insulation and ion conductivityNon-linear opticsChemistryElectricity
The invention relates to an all-solid state electrochromic device preparation method and prepared electrochromic glass, and solves the technical problems of complicated process, low yield and the like in existing electrochromic device preparation. A bottom transparent conducting layer, a lower pole electrochromic layer, an upper pole electrochromic layer and a top transparent conducting layer are sequentially deposited and grown on a transparent substrate, the upper pole electrochromic layer is directly deposited and grown on the lower pole electrochromic layer, an ion source is deposited on the upper pole electrochromic layer, the top transparent conducting layer is deposited and grown after the ion source is deposited, and finally, the device is prepared by heat treatment or optical treatment. Compared with traditional preparation technology, growth of an ion conduction layer is omitted, the technological process is simplified, yield is improved, and cost is reduced.
Owner:ZHEJIANG SHANGFANG ELECTRONICS EQUIP
Organic/inorganic composite porous layer-coated electrode and electrochemical device comprising the same
InactiveCN1918727AAvoid short circuitDoes not affect the pore structureActive material electrodesNon-aqueous electrolyte accumulator electrodesPorous coatingLithium
Disclosed is an electrode comprising a first organic / inorganic composite porous coating layer formed on its surface, wherein the first coating layer includes inorganic particles and a binder polymer for interconnecting and fixing the inorganic particles, and has micropores formed by interstitial volumes among the inorganic particles. An electrochemical device including the same electrode is also disclosed. Further, disclosed is a method for manufacturing an electrode having an organic / inorganic composite porous coating layer on the surface thereof, comprising the steps of: (a) coating a current collector with slurry containing an electrode active material and drying it to provide an electrode; and (b) coating the surface of electrode obtained from step (a) with a mixture of inorganic particles with a binder polymer. A lithium secondary battery including the electrode shows improved safety and minimized degradation in battery performance.
Owner:LG CHEM LTD
Use of porous membrane and composite membrane thereof in redox flow energy storage battery
ActiveUS20130252137A1Avoided low chemical stabilityMeet needsElectrolyte holding meansFinal product manufactureProtonIon transfer
Disclosed is use of a porous membrane and a composite membrane thereof in a redox flow batteries, and in particular the use thereof in a vanadium redox flow battery. The membrane can effectively realize the separation of ions with different valence states, and an ion transfer without any ion exchange group. The pore size and structure of the porous membrane can be controlled by filling an inorganic substance or grafting an ion exchange group in the pore, in order to improve the barrier properties of the porous membrane for vanadium ions and to increase proton conductivity.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
Solid electrolyte film, and preparation method and application of solid electrolyte film
ActiveCN104103873AHigh mechanical strengthLower internal resistanceFuel and primary cellsFuel and secondary cellsSolid state electrolyteLithium–air battery
The invention discloses a solid electrolyte film, and a preparation method and an application of the solid electrolyte film. The solid electrolyte film comprises a solid electrolyte layer and a porous ceramic layer, wherein the thickness of the solid electrolyte layer is 0.5-10 micrometers; the thickness of the porous ceramic layer is 100-300 micrometers; and the solid electrolyte layer uniformly covers the porous ceramic layer. The preparation method of the solid electrolyte film comprises the following steps of (1) preparing a solid electrolyte precursor: sintering raw material powder at 500-700 DEG C, (2) preparing a solid electrolyte target material: adding the powder to a binding agent, pressing the binding agent into sheets and sintering, and (3) applying the solid electrolyte film on a porous ceramic substrate: uniformly applying the solid electrolyte film on porous ceramic by a magnetron sputtering method. The solid electrolyte film has good ionic conduction properties and mechanical properties, is applied to preparation of a lithium air battery, and is low in internal resistance and good in electrical performance. The method is simple in technology and low in cost.
Owner:南京同宁新材料研究院有限公司
Composite anode material for lithium ion battery and preparation method thereof
ActiveCN103456928AAchieve cross-linkingIntegrity guaranteedManufacture by sprayingSilicon alloySodium-ion battery
Owner:DONGGUAN AMPEREX TECH +1
Cathode active material, cathode, secondary battery and manufacturing methods for the same
ActiveUS20130052544A1Improve discharge capacityIntercalation is facilitatedMaterial nanotechnologyPhosphatesX-rayRoom temperature
An object of the present invention is to provide a cathode active material which contains small-particle sized and low-crystalline lithium transition metal silicate and which undergoes charge-discharge reaction at room temperature.The cathode active material for a non-aqueous electrolyte secondary battery is characterized by containing a lithium transition metal silicate and exhibits diffraction peaks having half widths of 0.175 to 0.6°, the peaks observed through powder X-ray diffractometry within a 2θ range of 5 to 50°.
Owner:FURUKAWA ELECTRIC CO LTD +1
Solid electrolyte and all-solid state lithium ion secondary battery
InactiveUS20150044575A1High electronegativityImprove lithium ion mobilityElectrolytic capacitorsFinal product manufactureAll solid statePhysical chemistry
In a Li ion conductivity oxide solid electrolyte containing lithium, lanthanum, and zirconium, a part of oxygen is substituted by an element M (M=N, Cl, S, Se, or Te) having smaller electronegativity than oxygen.
Owner:HITACHI LTD
Heat-resistant film and composite ion-exchange membrane
InactiveUS20060138042A1High ion conductivityHigh mechanical strengthElectrolyte holding meansIon-exchanger regenerationSurface layerHeat resistance
The present invention is a heat-resistant film comprising at least any one of a polybenzazole, aramid and polyamideimide produced by introducing a thin film made by a roll, slit or press from a polymer solution sandwiched between at least two supports into a coagulating bath and peeling the supports off in the coagulating bath to effect the coagulation, and a composite ion-exchange membrane having a surface layer consisting of an ion-exchange resin excluding a porous film on the both side of a composite layer formed by impregnating said film with the ion-exchange resin. A heat-resistant film having a combination of excellent heat resistance, mechanical strength, smoothness and interlaminar peeling resistance, especially a microporous heat-resistant film, and a composite ion-exchange membrane employing the same which has an excellent ion conductivity are provided.
Owner:TOYO TOYOBO CO LTD
Metal fiber-nanometer carbon fiber-carbon aerogel composite material and preparation method and use thereof
InactiveCN101661839ASelf-supportingGood for electrolyte storageElectrode manufacturing processesHybrid capacitor electrodesMetal fiberInternal resistance
The invention discloses a metal fiber-nanometer carbon fiber-carbon aerogel composite material and a preparation method and a use thereof, wherein, the material contains metal fiber, nanometer carbonfiber and carbon aerogel; a binding point of the metal fiber is sintered on a tri-dimensional net structure, the nanometer carbon fiber grows on the metal fiber, and the carbon aerogel is coated on the nanometer carbon fiber. The preparation method comprises the following steps: sintering the metal fiber net structure in a large area on a selected thin layer; allowing the nanometer carbon fiber togrow by catalyzing a selected chemical vapor phase deposition method of a carbon-containing compound under a specified condition; then coating a selected organic polymer on the nanometer carbon fiber, and carbonizing the polymer at a certain temperature to obtain the metal fiber-nanometer carbon fiber-carbon aerogel composite material. The material can be taken as an electrode material of a novelchemical power supply; and the material has a self-supporting integral structure without an organic polymer macromolecular binding agent, has a tri-dimensional layered hole structure which is beneficial to ion transmission and storage, and has high electrical conductivity, small internal resistance and good chemical energy storage performance.
Owner:EAST CHINA NORMAL UNIV
Composite solid polymer electrolyte and preparation method thereof
The invention provides a composite solid polymer electrolyte and a preparation method thereof. The polymer electrolyte comprises a high-molecular polymer, carbon quantum dots and an organic lithium salt or organic sodium salt, wherein the high-molecular polymer is selected from one of polyoxyethylene, polyacrylonitrile or polymethyl methacrylate and the like. The preparation method comprises the steps of preparing the carbon quantum dots from organic ketone or organic aldehyde as a raw material and then compounding the carbon quantum dots and high-molecular polymer matrix and the organic lithium / sodium salt. By the composite solid polymer electrolyte, a crystal phase of the polymer matrix in the electrolyte can be effectively reduced, the dissociation rate of the lithium / sodium salt is improved, and the electrochemical properties of the ionic conductivity and the like of the polymer electrolyte are significantly improved.
Owner:湖南国拓新能源科技有限公司
Composite solid electrolyte material and preparation method and application thereof
ActiveCN110085909AGood compatibilityImprove electrochemical performanceSolid electrolytesSecondary cellsAll solid statePolymer electrolytes
The invention discloses a composite solid electrolyte material and a preparation method and application thereof. The composite solid electrolyte material is composed of a conducting ion polymer, a metal-organic framework material and an alkali metal or alkaline earth metal salt. The metal-organic framework material includes MOF-235, MIL-68, MIL-88. MIL-96 and other series. The metal-organic framework material has a special topological structure. The addition of the solid electrolyte material can effectively reduce the crystallinity of the polymer electrolyte, promote the dissociation of the alkali metal or alkaline earth metal salt, the obtained composite solid electrolyte has good ionic conductivity and electrochemical stability in a wide temperature range (25-120 DEG C) and also has goodflexibility and film thinning, and the preparation method is simple and scale production is feasible. The composite solid electrolyte can be matched with different types of positive electrode materials and alkali metal or alkaline earth metal negative electrode, and the assembled all-solid-state battery can present good electrochemical performance at the above-mentioned temperature.
Owner:CENT SOUTH UNIV
Molten salt and thermal battery
ActiveUS20080299447A1High ion conductivityImproved chemical stabilityDeferred-action cellsElectrolytic capacitorsElectrical resistivity and conductivityMolten salt
The present invention provides a molten salt containing at least two salts, and having a melting point of 350° C. or more and 430° C. or less and an electric conductivity at 500° C. of 2.2 S / cm or more. The present invention also provides a thermal battery including the molten salt as an electrolyte.
Owner:PANASONIC CORP
A sulphur-modified polyolefin battery separation film and its making method
ActiveCN101267028AImprove hydrophilicityGood ion conductivityFibre typesCell component detailsPolyolefinIsolation membrane
The invention discloses a polyolefin battery isolation membrane after lfonation modifying, wherein the weight ratios of raw material of the invention are: 60 to 90 percent of polyethylene or polypropylene fiber, graft monument acrylic acid, meth-acrylic acid, 2 to 10 percent of propylene peptide amine or meth-acrylic peptide amine, 5 to 15 percent of enhanced fiber, 1 to 10 percent of sulfonation agent. The polyolefin after lfonation modifying has good hydrophilicity, strong preserving liquid ability, high alkali uptake rate, good chemical stability and strong anti-oxidation property after washing, and can improve electrical property of nickel battery significantly.
Owner:SHENZHEN SENIOR TECH MATERIAL
Batteries, fuel cells, and other electrochemical devices
ActiveUS20110274988A1Improve performanceIncrease in component surface areaElectrolyte moving arrangementsSolid electrolytesFuel cellsEngineering
An electrochemical device having an anode electrode, a cathode electrode, and an electrolyte. At least one of the anode electrode and the cathode electrode is provided with a substantially uniform superficial relief pattern formed by a plurality of substantially uniform projections and has an electrical conductivity gradient between peaks of the projections and valleys between the projections
Owner:GAS TECH INST
High voltage lithium battery cell and preparation method therefor, and lithium ion battery
ActiveCN105470576AHigh ion conductivityPrevent restoreFinal product manufactureElectrolyte accumulators manufactureElectrolytic agentPolymer electrolytes
For overcoming the problem of degradation of lithium battery performance caused by high probability of oxidization of an electrolyte of a high voltage lithium battery in the prior art, the invention provides a high voltage lithium battery cell. The high voltage lithium battery cell comprises a positive electrode, a negative electrode and an electrolyte positioned between the positive electrode and the negative electrode; the electrolyte comprises an inorganic electrolyte layer and a polymer electrolyte layer positioned on the surface of the inorganic electrolyte layer; the inorganic electrolyte layer is positioned on the surface of the positive electrode; and the polymer electrolyte layer is positioned on the surface of the negative electrode. Meanwhile, the invention also discloses a preparation method for the high voltage lithium battery cell and a lithium ion battery adopting the high voltage lithium battery cell. The high voltage lithium battery cell provided by the invention can overcome a large amount of negative problems caused by oxidization of the electrolyte, and the safety performance and the cycling performance of the lithium battery can be improved.
Owner:BYD CO LTD
Solid electrolyte and secondary battery
InactiveCN104272518AHigh ion conductivityPrevent penetrationFinal product manufactureZirconium compoundsPorosityDendrite
The purpose of the present invention is to provide a solid electrolyte which can prevent the penetration of dendrites of electrode components, and has high ion conductivity, and to provide a secondary battery using the electrolyte. A solid electrolyte according to the present invention is sheet-shaped, is formed from an oxide sintered body, and comprises: a layer-shaped compact section having a sintered density of 90% or more; and a porous section which is formed so as to connect with at least one surface of the compact section on the surface-side of the solid electrolyte, and which has a porosity of at least 50%. A secondary battery according to the present invention comprises the solid electrolyte, and a positive electrode and a negative electrode which are arranged at corresponding positions sandwiching the solid electrolyte. Also, a secondary battery according to the present invention comprises: a separator comprising solid electrolyte; the positive electrode and negative electrode which are arranged at corresponding positions sandwiching the separator; and electrolyte solution which is filled in the negative electrode-side where the negative electrode is disposed and / or the positive electrode-side where the positive electrode is disposed, sandwiching the separator.
Owner:TOYOTA IND CORP
Garnet-type Li-ion conductive oxide
ActiveCN105977527AImprove sintered densityHigh ion conductivitySecondary cellsElectrolyte immobilisation/gelificationMaterials scienceIon
The invention provides a garnet-type Li-ion conductive oxide, that is, Li7La3Zr2O12, and the garnet-type Li-ion conductive oxide has relatively high sintered density and high ionic conductivity. The garnet-type Li-ion conductive oxide is formed by Li, La, Zr, and O. The garnet-type Li-ion conductive oxide is characterized by containing at least one element respresented by M1, M2, M3, and M4. The M1, M2, M3, and M4 represent the following elements. M 1 is more than one element selected from of Mg, Ca, Sr, Ba, and Zn. M2 is more than one element selected from Al, Ga, Co, Fe, and Y. M3 is more than one element selected from Sn and Ge. M4 is more than one element selected from Ta and Nb.
Owner:TDK CORPARATION
Preparation method for double quaternary ammonium side long chain anion-exchange membrane
ActiveCN104311857APrecise control of ion exchange capacityPrecise control of anion conductivityAnion exchangersSolubilityFunctional monomer
The invention discloses a preparation method for a double quaternary ammonium side long chain anion-exchange membrane. The preparation method is characterized in that a dual-functional monomer with both tertiary amine group and quaternary ammonium group performs nucleophilic substitution on the main polymer chain with live benzyl bromine, benzyl chloride or chlorine acyl group, so as to obtain the double quaternary ammonium side long chain anion-exchange membrane. The raw materials are cheap and are easy to obtain, the preparation method is simple and is applicable to large scale industrial production, and the prepared anion-exchange membrane has the advantages of high ion conductivity, long service life, excellent mechanical property, and good solubility.
Owner:UNIV OF SCI & TECH OF CHINA
Preparation method of electrospun composite membrane for lithium ion battery
InactiveCN105428572AImprove mechanical propertiesHigh ion conductivitySecondary cellsCell component detailsFiberCrystallinity
The invention provides a preparation method of an electrospun composite membrane for a lithium ion battery, and relates to lithium ion batteries. The invention provides the preparation method of the electrospun composite membrane which is higher in ionic conductivity, better in electrochemical properties and smaller in thickness for the lithium ion battery. The preparation method comprises: preparing a precursor solution A for compounding polyvinylidene fluoride and another polymer; preparing a precursor solution B for mixing the polyvinylidene fluoride and inorganic nano-material; and adopting an electrospinning technology to obtain the electrospun composite membrane for the lithium ion battery. According to the preparation method provided by the invention, PVDF is adopted as a substrate; a porous mesh-shaped composite fiber membrane is produced by using the electrospinning technology, a polymer blend and the inorganic nano-material; and a crystallinity of a PVDF system is reduced, thus improving ion conductivity, tensile strength and breaking elongation of an amorphous area of the membrane, ensuring ionic conductivity and safety performance of the lithium ion battery with a higher electrolyte, and obtaining fiber membranes different in thickness. Therefore, application needs of the lithium ion battery membrane are met.
Owner:XIAMEN UNIV
Apparatus for converting a fluid into at least two gasses through electrolysis
InactiveUS6890410B2Reduce manufacturing costSignificantly reduces anode/cathode arcingCellsElectrode shape/formsElectricityElectrolysis
An electrolysis conversion system for converting liquid to gas, such as water into hydrogen and oxygen, includes a housing in which are housed encapsulated and non-encapsulated electrodes in any one of side-by-side, rolled or folded relationship. The electrodes are immersed in an electrolyte, water or the like and are appropriately electrically connected to positive and negative sides of an energy source. The encapsulation material of the encapsulated electrodes can be substantially conductive or non-conductive to either ion flow or electron flow and either substantially non-porous or porous to gas bubbles with the option of utilizing spacers to prevent arcing and thereby generate hydrogen and oxygen from the water / electrolyte. The encapsulating media is either a folded flexible sheet heat sealed along three edges, two sheets heat sealed along four edges, a tube heat sealed along opposite axial edges or a coating dip-coated, electro-deposited, silk screen coated or similarly applied to the electrode which is preferably porous and can either be rigid or relatively bendable / flexible.
Owner:SULLIVAN JOHN T
Surface modified lithium-containing composite oxide for cathode active material for lithiun ion secondary battery and its production process
InactiveUS20100173199A1Large discharge capacity and volume capacity densityExcellent in safety and durabilitySecondary cellsPositive electrodesAlkaline earth metalLanthanide
To provide a surface modified lithium-containing composite oxide for a cathode active material for a lithium ion secondary cell, which is excellent in volume capacity density, safety, durability for charge and discharge cycles and an excellent rate property, and its production process.Particles of a lithium-containing composite oxide represented by the formula: LipNxMyOzFa, wherein N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Al, Sn, alkaline earth metal elements and transition metal elements other than N, 0.9≦p≦1.3, 0.9≦x≦2.0, 0≦y≦0.1, 1.9≦z≦4.2, and 0≦a≦0.05, are impregnated with a solution containing a lanthanoid source and a titanium source, followed by heat treatment at from 550 to 1,000° C., to prepare a surface modified lithium-containing composite oxide having a highly crystalline lithium lanthanoid titanium composite oxide having a perovskite structure containing no fluorine contained in the surface layer of the particles.
Owner:AGC SEIMI CHEM CO LTD
Battery and method of manufacturing the same
ActiveUS20140220454A1Ionic conduction can be improvedHigh ion conductivitySolid electrolytesFinal product manufactureElectrolyteAnode
A battery capable of improving ionic conduction is provided. The battery includes a cathode, an anode, and a solid electrolyte layer. One or more of the cathode, the anode, and the solid electrolyte layer includes a solid electrolyte binder.
Owner:MURATA MFG CO LTD
Sulfonated polymer applied to lithium battery electrode as binder
ActiveCN104466112AHigh performance featuresHigh rate characteristicsSecondary cellsNon-aqueous electrolyte accumulator electrodesHigh current densitySulfonated polymer
The invention relates to a sulfonated polymer applied to a lithium battery electrode as a binder as well as a method for preparing the lithium battery electrode. The sulfonated polymer is used as the binder in electrode slurry of the lithium battery electrode, the obtained lithium battery electrode is used for assembling a lithium battery, and the lithium battery is relatively long in charging-discharge cycle life and stable in work under a relatively high current density. The sulfonated polymer with a sulfonic acid group has excellent capacity of transferring lithium ions, so that the lithium ions can be rapidly transmitted back and forth between an electrode active material and an electrolyte, and the lithium battery which is stable to run under the rapid charging-discharging condition can be obtained. The sulfonated polymer which is used as the binder is sufficient in cohesion force and binding strength, and the electrode active material and a conductive medium are stuck onto a current collector by the sulfonated polymer and are unlikely to fracture and dust, so that the lithium battery has sufficient capacity and cycle performance as well as excellent rate capacity.
Owner:BEIJING NATURE STONE SCI TECH DEVP
Porous membrane and multilayer porous membrane
ActiveUS20150050545A1High ion conductivityImprove ionic conductivityHybrid capacitor separatorsNon-aqueous electrolyte accumulatorsPorous membraneTortuous retinal vessels
A multilayer porous membrane comprising a porous membrane containing a polyolefin resin as a main component; and a porous layer containing an inorganic filler and a resin binder and laminated on at least one surface of the porous membrane; wherein the porous membrane has an average pore size d=0.035 to 0.060 μm, a tortuosity τa=1.1 to 1.7, and the number B of pores=100 to 500 pores / μm2, which are calculated by a gas-liquid method, and the porous membrane has a membrane thickness L=5 to 22 μm.
Owner:ASAHI KASEI E-MATERIALS CORPORATION
Ceramic diaphragm taking aerogel as powder body, and applications of ceramic diaphragm in lithium ion battery
InactiveCN106784558AHigh porosityLarge specific surface areaSecondary cellsCell component detailsPorosityMetallurgy
The invention provides a ceramic diaphragm taking aerogel as a powder body, and applications of the ceramic diaphragm in a lithium ion battery, relating to a lithium ion battery diaphragm. The ceramic diaphragm takes aerogel as the ceramic powder body which is coated on the diaphragm to form a ceramic diaphragm. The ceramic diaphragm taking aerogel as the powder body can be applied to batteries. The batteries include non-aqueous electrolyte secondary batteries and the like; each battery comprises an anode material, a cathode material and a ceramic diaphragm taking aerogel as a powder body, and the ceramic diaphragm taking aerogel as a powder body is arranged between the anode material and the cathode material. Aerogel is a lightweight nanometer mesoporous noncrystaline material formed by crosslinking of atom clusters, the porosity is up to 80%, the specific surface area is up to 800-1000m<2> / g, the aerogel has the characteristics of being excellent in transparency, extremely low heat conductivity, resistant to high temperature, low in density and the like. The ceramic diaphragm can be used as a highly safety diaphragm material of secondary batteries such as lithium ion batteries, and has excellent thermal stability and electrochemical performances.
Owner:XIAMEN UNIV
Proton-conductive composite electrolyte membrane and producing method thereof
InactiveUS20080213646A1Improve ionic conductivityImprove battery performanceSemi-permeable membranesSolid electrolytesComposite electrolyteProton
Owner:KANAMURA KIYOSHI +1
Solidified composite electrolyte and preparation method thereof
ActiveCN103151557AImprove conductivityNot volatileSecondary cellsComposite electrolyteElectrochemistry
The invention relates to a solidified composite electrolyte and a preparation method thereof, and belongs to the technical field of lithium secondary battery electrolytes. The electrolyte is a gel composite electrolyte, and is formed by compounding a porous inorganic electrolyte network with an ionic liquid; and the electrolyte is the in-situ gel composite electrolyte formed by limiting an ionic liquid by a porous inorganic electrolyte network in situ or an ex-situ adsorption-type gel composite electrolyte formed by limiting an ionic liquid by a porous inorganic electrolyte network ex situ. The method adopts an ionic liquid to assist a sol-gel method, and the in-situ gel composite electrolyte, an all-solid-state electrolyte or the ex-situ adsorption-type gel composite electrolyte can be prepared in the different steps of one method. The electrolyte is in a porous network structure and a nano-particle size, represents high ionic conductivity, wide electrochemical stability window, good heat stability, chemical stability and mechanical strength, good film-forming property, and is easy to process and form; and the method is simple, low in consumption, energy-saving, green and environment-friendly.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Strongly alkaline polyarylether ionomer and preparation and application thereof
ActiveCN102702507AImprove ionic conductivityLow ionic conductivityCell component detailsFuel cell detailsDiphenylmethaneIonomer
The invention discloses strongly alkaline polyarylether ionomer and preparation and application thereof. The strongly alkaline polyarylether ionomer is prepared by polymerizing 2 (4, 4'-hydroxyphenyl) diphenylmethane and chlorine-containing or fluorine-containing aromatic monomer with Ar1 and Ar1 structure to obtain polyarylether, and subjecting the polyarylether to a series of functional processes such as chloromethylation, quaternization and alkalization. An alkaline anion exchange membrane is prepared by casting chloromethylation-based polyarylether solution into a membrane and subjecting the membrane to a series of functional processes such as quaternization and alkalization. The alkaline anion exchange membrane has fine barrier action on methyl alcohol, is fine in physicochemical property, high in thermal stability and fine in conductivity at high temperature, overcomes the defects of unstable property and low ionic conductivity of existing polyarylether anion exchange membranes, is applicable to fuel cell alkaline anion exchange membranes, and has broad application prospect.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method of coated ternary nickel-cobalt-manganese lithium oxide positive electrode material
InactiveCN109638232AHigh ion conductivityImprove high temperature cycle performanceCell electrodesSecondary cellsLithium oxideElectrical conductor
The invention discloses a preparation method of a coated ternary nickel-cobalt-manganese lithium oxide positive electrode material. The preparation method comprises the following steps of (1) preparing a ternary nickel-cobalt-manganese lithium precursor; (2) preparing an oxide-coated ternary nickel-cobalt-manganese lithium precursor; and (3) preparing an ion conductor oxide-coated ternary nickel-cobalt-manganese lithium positive electrode material. By the preparation method of the positive electrode material, a lithium ion is easy to de-intercalate from a surface layer of the material, and thehigh-temperature circulation performance of the material is improved; a coating layer does not react with an electrolyte, interface side reaction caused by contact of the main body material and the electrolyte is reduced, and the safety of the material is improved; the processing performance of a pole plate during the uniform coating process is improved, and the high-temperature circulation performance of the material after being assembled into a battery is improved; and the prepared positive electrode material does not need to be subjected to a roasting process for two times, the energy consumption is reduced, and the cost is reduced.
Owner:宁夏汉尧富锂科技有限责任公司
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