Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
38results about How to "Guaranteed ionic conductivity" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Energy storage device with both capacitor and lithium ion battery characteristics and manufacturing method thereof
InactiveCN101320821AIncrease energy densityImprove power densityFinal product manufactureActive material electrodesCapacitanceHigh energy
An energy storage device having both characteristics of super capacitor and lithium ion battery and manufacturing method thereof are provided. The invention adopts the mixture of anode material of lithium ion battery and electrode material of super capacitor or composite material as anode active substance, and uses the mixture of cathode material of the lithium ion battery and electrode material of the super capacitor or composite material as cathode active substance. In the electrode active substance, the electrode material of the lithium ion battery has a content of 20% to 95%; the electrode material of the super capacitor has a content of 5% to 80%. The electrode active substance is mixed with the bonder, conducting agent, additive and solvent etc to prepare slurry, then experience steps of coating, drying, roll forming, parting, so that the anode sheet and cathode sheet of the super capacitance battery are produced. By adopting multi-core winding parallel connection and the assembling technology of the winded wore parallel to the narrow arrangement, the anode sheet, the cathode sheet and the membrane are loaded in the battery shell and then welded, dried, dehydrated, and injected with electrolyte, then activated by electricity to obtain super capacitance battery with high energy density and high power density.
Owner:CENT SOUTH UNIV
Porous lithium ion battery separator with interpenetrating polymer network structure, and preparation method and application for porous lithium ion battery separator
ActiveCN105932203AGood mechanical strengthGuaranteed ionic conductivityCell seperators/membranes/diaphragms/spacersSecondary cellsSolventPolyvinylidene fluoride
The invention discloses a porous lithium ion battery separator with an interpenetrating polymer network structure, and a preparation method and an application for the porous lithium ion battery separator. The preparation method specifically comprises the steps of uniformly mixing polyvinylidene fluoride-hexafluoropropylene, (methyl) acrylate monomers, octavinyl octa-silsesquioxane cross-linking agent and pore-forming auxiliary in a proper solvent to form porous gel polymer film with the interpenetrating polymer network structure through free radical polymerization, wherein the ion conductivity of the polymer film at a temperature of 25 DEG C can reach 1.0*10<-3>S / cm, the tensile strength can reach 7MPa, and excellent dimensional stability is realized; and on the basis, carrying out post processing on the gel polymer film to obtain the porous separator. By adoption of the lithium ion battery separator provided by the invention, the ionic conductivity can be greatly improved, and the high rate charging-discharging performance can be also obviously enhanced as well, so that the porous lithium ion battery separator is high in application potential.
Owner:SUZHOU UNIV
Polymer composite membrane, preparation method thereof, polymer composite membrane prepared by method, gel electrolyte and lithium ion battery
ActiveCN106159173AHigh porosityGuaranteed ionic conductivitySecondary cellsCell component detailsPorosityPolymer science
In order to solve the problem of poor cohesiveness of a fiber layer in a polymer composite membrane in the prior art, the invention provides a polymer composite membrane. The polymer composite membrane comprises a separator and a fiber layer, wherein the fiber layer is arranged on the separator, and the peel strength of the fiber layer is over 0.03kN / m. Meanwhile, the invention also discloses a preparation method of the abovementioned polymer composite membrane. Moreover, the invention also provides the polymer composite membrane obtained according to the abovementioned preparation method, a gel electrolyte comprising the abovementioned polymer composite membrane and a lithium ion battery applying the polymer composite membrane. In the polymer composite membrane provided by the invention, the fiber layer has favorable cohesiveness, particularly, the cohesiveness between filaments in the fiber layer is high, and a positive / negative electrode and the separator can be effectively bonded into a whole; high porosity of the fiber layer is beneficial for improving the ionic conductivity; and when the polymer composite membrane provided by the invention is used for the lithium ion battery, the rate performance, the cycle performance and the safety of the lithium ion battery are greatly improved, and the service lifetime of the lithium ion battery is long.
Owner:BYD CO LTD
Polymer composite membrane as well as preparation method and lithium ion battery with same
InactiveCN107785519AImprove high temperature resistanceSmall thermal shrinkageCell seperators/membranes/diaphragms/spacersFinal product manufacturePolymer sciencePolymer composites
The invention relates to the field of lithium ion batteries, discloses a polymer composite membrane as well as a preparation method thereof, and further discloses a lithium ion battery with the polymer composite membrane. The polymer composite membrane comprises a porous base membrane and a thermal-resistant fiber layer, wherein the surface of at least one side of the porous base membrane is covered with the thermal-resistant fiber layer; the thermal-resistant fiber layer is made of a material containing a first high polymer material and a second high polymer material simultaneously; the firsthigh polymer material is a thermal-resistant high polymer material of which the melting point is 180 DEG C or greater; the melting point of the second high polymer material is lower than that of thefirst high polymer material; the liquid absorption capacity of the second high polymer material in electrolyte of 25 DEG C is 40% or greater, with the error of + / -5%. Due to adoption of the first highpolymer material and the second high polymer material, the high temperature stability and the mechanical properties of the polymer composite membrane under high temperature conditions can be improved.
Owner:BYD CO LTD
Polymer composite film and preparation method thereof, and lithium ion battery comprising polymer composite film
InactiveCN107799703AImprove high temperature resistanceSmall thermal shrinkageCell seperators/membranes/diaphragms/spacersFinal product manufactureFiberElectrolytic agent
The invention discloses a polymer composite film and a preparation method thereof, and a lithium ion battery comprising the polymer composite film. The polymer composite film comprises a polymer basefilm, which comprises a first surface and a second surface, wherein the first surface and the second surface are oppositely arranged, the polymer composite film further comprises a first ceramic layer, a first heat-resistant fiber layer and a first adhesion layer, the first ceramic layer, the first heat-resistant fiber layer and the first adhesion layer are sequentially arranged on the first surface of the polymer base film from inside to outside, the materials of the first heat-resistant fiber layer simultaneously contain a first macromolecule material and a second macromolecule material, thefirst macromolecule material is a heat-resistant macromolecule material with a melting point of more than 180 DEG C, the melting point of the second macromolecule material is lower than the melting point of the first macromolecule material, the liquid absorption rate of the second macromolecule material in a 25 DEG C electrolyte is more than 40%, and the error is + / -5%. According to the present invention, by simultaneously using the first macromolecule material and the second macromolecule material, the high temperature stability and the mechanical property under the high temperature condition can be easily improved.
Owner:BYD CO LTD
Preparation method of polybenzimidazole/modified polyepichlorohydrin composite anion-exchange membrane
ActiveCN106543459AAchieve perfect compatibilityHarm reductionFuel cellsComposite filmIon-exchange membranes
The invention belongs to the field of alkaline fuel cells, and particularly relates to a preparation method of a polybenzimidazole / modified polyepichlorohydrin composite anion-exchange membrane. The preparation method comprises the following steps: after evenly mixing a polybenzimidazole-containing solution with an imidazolium salt modified polyepichlorohydrin solution, evaporating a solvent into a film; and soaking the film in an alkaline solution, and then washing the film to be neutral so as to obtain the composite anion-exchange membrane. The preparation method is simple and efficient, harm to the environment and human bodies is small, and the composite film has good ionic conductivity and stable alkali resistance and mechanical property, and can be applied to the field of alkaline fuel cells.
Owner:CHANGZHOU UNIV
Porous lithium ion battery separator based on crosslinked and linear polymer and preparation method and application thereof
ActiveCN109119574AHigh mechanical strengthImprove thermal stabilityCell seperators/membranes/diaphragms/spacersSecondary cellsMeth-High rate
The invention discloses a porous lithium ion battery separator based on a crosslinked and linear polymer and a preparation method and application thereof. The specific preparation method comprises thefollow steps: polyvinylidene fluoride-hexafluoropropylene, (meth)acrylate monomer, octavinyl polyhedral oligomeric silsesquioxane crosslinking agent and nano-zinc oxide are uniformly mixed in a suitable solvent, and a gel polymer film with a crosslinkied structure is formed by free radical polymerization, and after a pore forming effect of nano-zinc oxide, the ionic conductivity of the gel polymer film is 1.4 * 10<-3> S / cm, the tensile strength is up to 16 MPa, and excellent dimensional stability is achieved. The lithium ion battery separator obtained by the invention can greatly improve theionic conductivity and the high rate charging and discharging performance, and has good application potential.
Owner:SUZHOU UNIV
Repairable cross-linked solid polymer electrolyte as well as preparation method and application thereof
ActiveCN111682261AGood thermosettingGuaranteed ionic conductivityLi-accumulatorsElectrolyte immobilisation/gelificationPolymer sciencePolythylene glycol
The invention provides a repairable cross-linked solid polymer electrolyte as well as a preparation method and application thereof, and the repairable cross-linked solid polymer electrolyte is prepared by the following method: dispersing and dissolving terephthalaldehyde, bisphenol A diglycidyl ether, polyethylene glycol diamine and a lithium salt in an acetonitrile solvent, and carrying out stirring for 2-6 hours to obtain a transparent and uniform mixed solution A; dropwise adding the mixed solution A onto a polytetrafluoroethylene mold, and volatilizing acetonitrile at room temperature to obtain a sol-like substance B; and putting the sol-like substance B into a vacuum drying oven, carrying out polymerization reaction to completely crosslink and solidify the sol-like substance B, and continuously heating to dry the sol-like substance B to prepare the polymer electrolyte. According to the invention, a dynamic imine covalent bond is introduced into the polymer electrolyte to form thesolid network-shaped polymer electrolyte, so that the solid network-shaped polymer electrolyte can be repaired in time when fracture occurs in the use process; the prepared network-like polymer electrolyte has high thermal stability and dendritic-crystal-free morphology, and has excellent electrochemical properties such as ionic conductivity and lithium ion migration number.
Owner:NANCHANG HANGKONG UNIVERSITY
Imidazole side chain type anion exchange membrane for fuel cells and preparation method of imidazole side chain type anion exchange membrane
ActiveCN110760038ASolve the problem of decreased ionic conductivityImprove compactnessFuel cellsPolymer scienceFuel cells
The present invention provides an imidazole side chain type anion exchange membrane for fuel cells and a preparation method of the imidazole side chain type anion exchange membrane, and belongs to thefields of polymer chemistry and anion exchange membrane fuel cells. The anion exchange membrane is characterized in according to different monomer molar ratio: a molar ratio of a methyl hydroquinonemonomer to an allyl bisphenol S monomer is a:b (a and b are each an integer of 1-9, and a + b is 10). The present invention also provides the preparation method of the imidazole side chain type anionexchange membrane. The method uses a nucleophilic polycondensation reaction to conduct polymerizing according to different monomer molar ratios to form poly(aryl ether sulfone ketone) with different proportions containing the methyl hydroquinone monomer and allyl bisphenol S monomer so as to prepare the imidazole side chain type anion exchange membrane. The imidazole side chain type anion exchangemembrane has highest ion conductivity of 0.157 S / cm at a temperature of 80 DEG C.
Owner:华氢(广东)新能源科技有限公司
Dielectric electrolyte, lithium ion battery and preparation method of lithium ion battery
ActiveCN111682258AGood chemical stabilityImprove conductivitySolid electrolytesSecondary cellsSolid state electrolyteDielectric
The invention discloses a dielectric electrolyte. The dielectric electrolyte comprises the following substances in percentage by mass: 6 to 24% of conductive lithium salt, 70% to 90% of a polymer electrolyte matrix, and 3% to 6% of a plasticizer. The invention further discloses a lithium ion battery using the dielectric electrolyte. The lithium ion battery comprises a positive pole piece and a lithium negative pole piece; the surfaces of the positive pole piece and the lithium negative pole piece are coated with quasi-solid electrolyte; the surface of the lithium negative pole piece is coatedwith the dielectric electrolyte; preferably, the quasi-solid electrolyte comprises methyl methacrylate, Li < 1.5 > Al < 0.5 > Ge < 1.5 > (PO < 4 >) < 3 > and a mesoporous molecular sieve. The invention further discloses a preparation method of the dielectric electrolyte. According to the invention, the state of the medium electrolyte semi-solid gel has good chemical stability to lithium metal, andthe growth of lithium dendrites is inhibited, so that the lithium ion battery with excellent performance is obtained.
Owner:南通赛得能源有限公司
Composite electrolyte and application thereof
ActiveCN111613830AGood chemical stabilityImprove conductivitySolid electrolytesSecondary cellsSolid state electrolyteElectrolytic agent
The invention discloses a composite electrolyte and application thereof, the composite electrolyte comprises a gel electrolyte coated on a lithium negative electrode and a quasi-solid electrolyte coated on a positive electrode, and the gel electrolyte is in contact with the quasi-solid electrolyte; electrolyte is adsorbed in the quasi-solid electrolyte; both the gel electrolyte and the quasi-solidelectrolyte contain the same conductive lithium salt; the invention also discloses application of the composite electrolyte to a lithium ion battery. According to the invention, through cooperation of the two electrolytes, lithium dendrites are inhibited, and the composite electrolyte is ensured to have good conductivity.
Owner:南通赛得能源有限公司
Core-shell structure material and preparation method and applications thereof
ActiveCN107331856AGuaranteed ionic conductivityGuaranteed electronic conductivityCell electrodesSecondary cellsIonLithium sulfide
The invention discloses a core-shell structure material and a preparation method and applications thereof. The core-shell structure material comprises a core containing elemental sulfur and a shell that coats the core. The shell comprises sulfur containing organic substances. The sulfur containing organic substances can react with selected substances to for an in-situ coating layer on the shell. The selected substances are selected from substances that can carry out nucleophilic reactions or electrophilic reactions with sulfur containing organic substances. The core-shell structure material can be used as the cathode material of a lithium-sulfur battery; moreover, the preparation technology is simple and convenient, the efficiency is high, the conditions are mild, the equipment is simple, and the material is suitable for large scale industrial application. The sulfur containing organic substances in the core-shell structure material can carry out chemical reactions with lithium sulfide electrolyte additives and generates an in-situ coating layer, which can inhibit the dissolution and shuttling of polysulfide ions. A lithium sulfur battery prepared from the core-shell structure material has a high discharge capacity and excellent cycling stability.
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
Lithium polyoxometallate composite diaphragm for lithium battery
ActiveCN104051694AGuaranteed ionic conductivityLower battery internal resistanceCell component detailsBattery chargeElectrolyte
The invention discloses a lithium polyoxometallate composite diaphragm for a lithium battery and a preparation method of the diaphragm. The composite diaphragm comprises a PVDF-HFP copolymer, SiO2 and lithium polyoxometallate, wherein the lithium polyoxometallate has a three-dimensional skeleton structure, and lithium ions are combined with anions of lithium polyoxometallate; in the battery charging / discharging process, the lithium ions of the lithium polyoxometallate can be continuously exchanged with the lithium ions in electrolyte, the combination of the diaphragm material with the lithium ions in the electrolyte is realized, the internal resistance of the battery is reduced, and the rate characteristic of the battery is improved.
Owner:DONGFANG ELECTRIC CORP LTD
Preparation process of gel lithium battery
PendingCN112436195AIncrease energy densityImprove securityFinal product manufactureSecondary cells servicing/maintenanceElectrolytic agentSlurry coating
The invention is applicable to the technical field of lithium battery preparation, and provides a preparation process of a gel lithium battery, which comprises the following steps: forming slurry coatings on the surfaces of a positive pole piece and a negative pole piece in a manner of dip-coating the positive pole piece and the negative pole piece in a mixed solution containing a gel material, nano ceramic powder, a dispersing agent, a solvent and a flame-retardant additive; and enabling the coating to be subjected to vacuum baking to form a gel film to replace a lithium battery diaphragm inthe prior art, so that the energy density of the battery can be improved. After the composite positive pole piece and the composite negative pole piece are wound into a battery cell and electrolyte isinjected into the battery cell, multidimensional pores are formed, channels of lithium ions in a gel thin film are guaranteed, the electrolyte containing the flame-retardant additive is prepared, andthe safety performance of the battery can be improved by means of self-dissolution and extraction of the flame-retardant additive in the electrolyte. The gel films on the surfaces of the composite positive pole piece and the composite negative pole piece are formed into self-crosslinking at high temperature and high pressure to form a good reaction interface, so that the ionic conductivity of lithium ions in the gel films is ensured.
Owner:湖南省斯盛新能源有限责任公司
A kind of preparation method of ion exchange membrane for vanadium battery
ActiveCN105932317BImprove mechanical propertiesReduce penetrationRegenerative fuel cellsCross-linkIonic conductance
Owner:深圳市益达兴科技股份有限公司
Hydrotalcite in-situ growth composite membrane, and preparation method and application thereof
InactiveCN112928322AHigh selectivityLow costRegenerative fuel cellsElectrical batteryPhysical chemistry
The invention discloses a hydrotalcite in-situ growth composite membrane, and a preparation method and application thereof, and belongs to the field of alkaline and neutral group secondary batteries. The hydrotalcite in-situ growth composite membrane comprises an ion conduction membrane substrate and a hydrotalcite layer grown on the ion conduction membrane in situ. By effectively controlling hydrotalcite synthesis conditions and interface interaction, the distribution uniformity of the synthesized hydrotalcite layer can be effectively controlled, and accurate size screening and high-efficiency ionic conductivity of the porous ionic conduction membrane are realized. In addition, the in-situ growth hydrotalcite film has super-strong alkali-resistant stability and mechanical properties, so that the alkaline zinc-based flow battery with high performance and long service life is realized, and a good application prospect is shown.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Solid electrolyte with self-supporting structure, preparation method and application
InactiveCN111900460AImprove adhesionIncrease contactSolid electrolytesLi-accumulatorsSolid state electrolyteAdhesive
The invention discloses a solid electrolyte with a self-supporting structure. The solid electrolyte comprises a framework material and active ceramic powder adhered to the framework material through an adhesive, and the surface of the framework material loaded with the active ceramic powder is uniformly covered with uniformly mixed succinonitrile and lithium bis(trifluoromethyl) sulfonimide. The invention also discloses a preparation method and application of the solid electrolyte. The solid electrolyte not only has good mechanical properties and interface contact, but also has high ionic conductivity and a wide electrochemical window; and the cycle performance of an all-solid-state lithium ion battery prepared by the method is remarkably improved.
Owner:SIDUS ENERGY TECH LTD
Lithium battery negative plate loaded with temperature-resistant composite layer and preparation method
ActiveCN112259707AImprove temperature resistanceGuaranteed ionic conductivitySecondary cellsNegative electrodesElectrical conductorHexafluoropropylene
The invention provides a lithium battery negative plate loaded with a temperature-resistant composite layer and a preparation method. The lithium battery negative plate is prepared by spraying a turbid liquid B on the negative plate loaded with a porous conductive layer, and the turbid liquid B is prepared by adding an inorganic temperature-resistant material into a mixed solution; the negative plate loaded with the porous conductive layer is prepared by spraying a turbid liquid A on the negative plate, the turbid liquid A is prepared by adding an inorganic lithium ion conductor, polyoxyethylene and graphene oxide powder into a mixed solution, and the negative plate is prepared by mixing a negative active material, polyvinylidene fluoride and a conductive agent and coating a copper foil with the mixture, wherein the mixed solution is prepared by dissolving a polyvinylidene fluoride hexafluoropropylene copolymer in a mixed solvent of acetone and N, N-dimethylformamide. The lithium battery negative plate provided by the invention not only has good temperature resistance, but also has high ionic conductivity and good safety and usability, and meanwhile, the preparation process is simple and suitable for industrial production.
Owner:山东亿维新材料有限责任公司
Preparation method and application of polyolefin/nanocrystalline cellulose composite membrane
InactiveCN105185940BImprove hydrophilicityImprove bindingCell seperators/membranes/diaphragms/spacersCellulosePolymer science
Owner:XUCHENG FUJIAN SCI & TECH
Lithium ion battery and preparation method thereof
ActiveCN112786962AEnsure effective conductionImprove cycle performanceFinal product manufactureSecondary cells charging/dischargingPolymer electrolytesChemical physics
The invention provides a lithium ion battery and a preparation method thereof. The lithium ion battery comprises a positive electrode material, a negative electrode material and a polymer electrolyte, and the polymer electrolyte has a -NHLi structure on a contact surface with at least one of the positive electrode material and the negative electrode material. The polymer electrolyte of the lithium ion battery is formed by in-situ polymerization during battery formation. Therefore, a -NHLi structure is formed on the surface of the positive electrode material or / and the negative electrode material, so that effective conduction of lithium ions can be ensured, and the ionic conductivity and the lithium ion transference number are ensured. Meanwhile, the polymer has excellent elastic modulus and can maintain the stability of an interface, so that a stable lithium ion transmission channel and a stable lithium ion transmission interface are provided, and the cycle performance of the battery is improved.
Owner:CHINA AVIATION LITHIUM BATTERY RES INST CO LTD
A porous ion-conducting membrane supported by an organic framework copolymer and its preparation and application
ActiveCN113036174BAchieving controllable designPrevent collapseSolid electrolytesRegenerative fuel cellsNon solventOrganic chemistry
The invention discloses the application of a porous ion-conducting membrane supported by an organic skeleton copolymer in a liquid flow battery. This type of film is prepared by dissolving the soluble organic skeleton copolymer precursor A in the casting solution, coating it on the support, and undergoing phase inversion in a non-solvent containing the organic skeleton copolymer precursor B. The film is formed During the process, precursor A and precursor B in-situ generate organic framework copolymers in the film. The prepared porous ion conduction membrane containing the organic framework copolymer is processed, dried and pickled to prepare the porous ion conduction membrane supported by the organic framework copolymer. The designed and prepared porous ion-conducting membrane has good battery performance in the flow battery, especially the all-vanadium flow battery.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Electricity-membrane coupled water treatment system with clean energy and water treatment method
PendingCN111675396AReduce maintenance costsSolve the problem of low turbulence intensityWater contaminantsWater/sewage treatment with mechanical oscillationsDiamond electrodesChemical oxygen demand
The invention discloses an electricity-membrane coupled water treatment system with clean energy and a water treatment method. The system comprises a particle filtering module, an electrochemical degradation module, a nanofiltration separation module, a direct-current power supply and a solar power generation module. The outlet of the particle filtering module is connected to the electrochemical degradation module; the outlet of the electrochemical degradation module is connected to the nanofiltration separation module; concentrated water is returned to the electrochemical degradation module through the outlet of the nanofiltration separation module, and fresh water is discharged through the outlet. Any processing unit in the electrochemical degradation module comprises an anode and a cathode, the anode and the cathode are connected with a direct-current power supply through wires, and the direct-current power supply is connected with the solar power generation module. The anode is a gradient boron-doped diamond electrode. The provided treatment system has high chemical oxygen demand (COD) removal efficiency, high mineralization efficiency and high current utilization efficiency, and meanwhile, by introducing clean energy into the system structure, the overall energy consumption required in the water degradation process can be greatly reduced.
Owner:江苏净钻环保科技有限公司
Porous lithium-ion battery separator based on cross-linked and linear polymers and its preparation method and application
ActiveCN109119574BHigh mechanical strengthImprove thermal stabilityCell seperators/membranes/diaphragms/spacersSecondary cellsMethacrylateCross linker
Owner:SUZHOU UNIV
A kind of preparation method of polybenzimidazole/modified polyepichlorohydrin composite anion exchange membrane
ActiveCN106543459BAchieve perfect compatibilityHarm reductionFuel cellsComposite filmIon-exchange membranes
Owner:CHANGZHOU UNIV
A kind of medium electrolyte, lithium ion battery and preparation method thereof
ActiveCN111682258BGood chemical stabilityImprove conductivitySolid electrolytesSecondary cellsSolid state electrolyteDielectric
Owner:南通赛得能源有限公司
Positive plate and application thereof
InactiveCN111900330AReduce acid contentIncrease fluid retentionSecondary cellsPositive electrodesElectrolytic agentPhysical chemistry
The invention provides a positive plate and application thereof. A first aspect of the invention provides a positive plate. The positive plate comprises a current collector and an active layer, and the active layer is arranged on the upper surface and / or the lower surface of the current collector. At least one active layer comprises functional particles, and the functional particles are oxides ofwhich the outer layers comprise -NH- or -NH2 groups. According to the positive plate provided by the invention, the active layer comprises the functional particles, and-NH-or-NH2 groups on the outer layers of the functional particles can adsorb acidic substances in the lithium ion battery and reduce the acid content in the lithium ion battery, so that consumption of lithium ions and corrosion of the acidic substances to a positive electrode material are avoided. Besides,-NH- or -NH2 groups on the outer layers of the functional particles have certain hydrophilicity, so that the wettability of the electrolyte can be effectively improved, lithium ion channels are increased, the liquid retention rate of the positive plate is increased, and the ionic conductivity between the positive plate andthe electrolyte is ensured, and therefore, the cycle performance and the safety performance of the lithium ion battery are improved.
Owner:ZHUHAI COSMX BATTERY CO LTD
Different-side-chain type anion exchange membranes for fuel cell and preparation method of membranes
PendingCN112300391ASolve the problem of decreased ionic conductivityImprove compactnessFuel cellsFuel cellsSide chain
The invention provides a different-side-chain type anion exchange membranes for a fuel cell and a preparation method of the anion exchange membranes, and belongs to the field of polymer chemistry andanion exchange membrane fuel cells. According to different molar ratios of monomers, the molar ratio of a methyl hydroquinone monomer to an allyl bisphenol S monomer is a:b (a and b are both integersof 1-9 and a+b is equal to 10); the invention also provides a preparation method of the different-side-chain type anion exchange membranes, which comprises the following steps: conducting polymerizingaccording to different molar ratios of monomers by utilizing nucleophilic polycondensation reaction to form polyaryletherketone containing different proportions of the methyl hydroquinone monomer tothe allyl bisphenol S-containing monomer, thereby preparing the different-side-chain type anion exchange membranes. The highest ionic conductivity of the different-side-chain type anion exchange membranes at 80 DEG C can reach 0.137 S / cm.
Owner:CHANGCHUN UNIV OF TECH
A film-forming method for a polymer-based solid electrolyte
ActiveCN109167090BEasy dischargeUniform structureSecondary cellsFuel cellsSolid state electrolytePhysical chemistry
The invention discloses a method for forming a film of a polymer-based solid electrolyte, which comprises the following steps: (1) adding lithium salt and a polymer into a polar solvent, stirring evenly to form a film with a viscosity of 0.1Pa·s to 10Pa·s uniform slurry; (2) scrape or spray the slurry on the rigid substrate to form a layer of wet film, and then cover the porous framework material on the surface of the wet film; (3) uniformly coat the slurry on the porous framework material A layer of wet film is formed on the surface, and then dried to form a polymer-based solid electrolyte membrane. In the film-forming method of the present invention, by coating the film twice, the polymer slurry can be well adsorbed on the inside and surface of the porous skeleton material to achieve the effect of sufficient wetting, which is conducive to the discharge of air bubbles. After drying, it forms smooth, A polymer solid electrolyte membrane with a uniform structure and no internal defects ensures the ionic conductivity and tensile strength of the polymer-based solid electrolyte.
Owner:CHANGSHA RES INST OF MINING & METALLURGY
Lithium ion battery, negative electrode material, negative electrode filler and preparation process thereof
PendingCN114824443AImprove stabilityImprove cycle performanceSmall-sized cells cases/jacketsLarge-sized cells cases/jacketsHydrofluoric acidElectrical battery
The invention provides a lithium ion battery, a negative electrode material, a negative electrode filler and a preparation process thereof. The negative electrode filler of the negative electrode material comprises an elastic shell film and a conductive agent layer coated on the surface of the elastic shell film. A hole body is formed in the outer surface of the elastic shell membrane, a hollow cavity is formed in the elastic shell membrane, and the hole body is communicated with the hollow cavity. A water removal coating is formed on the inner wall of the elastic shell film. According to the negative electrode filler of the negative electrode material, the hole bodies are formed in the outer surface of the elastic shell membrane, and the hollow cavity is formed in the elastic shell membrane, so that when the lithium ion battery expands, the elastic shell membrane of the negative electrode filler is extruded and contracted, and the influence on the overall thickness expansion of a pole piece is avoided; the water removal coating is formed on the inner wall of the elastic shell film, so that the water in the negative electrode material can be effectively removed, the generation of hydrofluoric acid is reduced, the high-temperature performance, the cycle performance and the safety performance of the lithium ion battery are improved, and the service life of the lithium ion battery is prolonged.
Owner:东莞凯德新能源有限公司
Lithium-ion secondary battery, separator and preparation method thereof
ActiveCN105206778BGuaranteed ionic conductivityHigh mechanical strengthSecondary cellsCell component detailsPorous substrateElectrolytic agent
Owner:CONTEMPORARY AMPEREX TECH CO
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com