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37results about How to "Dendrite suppression" patented technology
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Electrolyte for inhibiting lithium dendrites and preparation method thereof, and lithium battery
InactiveCN107275671AImprove securityDendrite suppressionSecondary cells servicing/maintenanceOrganic solventNanoparticle
The invention specifically relates to an electrolyte for inhibiting lithium dendrites and a preparation method thereof, and a lithium battery, belonging to the technical field of lithium batteries. The electrolyte comprises a lithium salt, a nanometer additive, a dispersant and an organic solvent, wherein the concentration of the lithium salt is 0.5 to 10 mol / L, and the mass percent of the nanometer additive is 0.01 to 10%. The nonaqueous electrolyte prepared with fluoride-containing nanoparticles as the nanometer additive enables the battery to have better stability and security and longer service life; the fluoride-containing electrolyte has continuous and stable effect in the battery; compared with traditional film-forming nanometer additives, the fluoride-containing nanoparticles achieves the effect of on-site rapid film formation on the surface of a negative electrode, so the growth of lithium dendrites and side reactions on the surface of a positive electrode are effectively inhibited; moreover, the fluoride-containing nanoparticles stably exist in the electrolyte and is free of problems like decline in effect.
Owner:东莞市航盛新能源材料有限公司 +1
Lithium secondary cell
InactiveUS20120208062A1Inhibit deteriorationIncrease capacitanceFinal product manufactureCell electrodesLithiumBattery cell
A lithium secondary cell, having: a negative electrode, a negative electrode-electrolyte solution, a separator, a positive electrode-electrolyte solution, and a positive electrode, which are disposed in this order, in which the separator is a solid electrolyte through which only lithium ions pass.
Owner:NAT INST OF ADVANCED IND SCI & TECH
Aqueous electrolyte for improving reversibility of neutral zinc-manganese battery and preparation method of aqueous electrolyte
PendingCN112086694AThe preparation method is safeEasy to prepareSecondary cellsAqueous electrolytesElectrolytic agentElectrical battery
The invention relates to an aqueous electrolyte for improving reversibility of a neutral zinc-manganese battery and a preparation method of the aqueous electrolyte, and the preparation method comprises the following steps: 1, preparing an inorganic zinc salt basic electrolyte: dissolving inorganic zinc salt in water, and stirring at room temperature to obtain the inorganic zinc salt basic electrolyte with a certain concentration; and 2, adding a certain amount of organic complexing agent according to the complexing molar ratio, and stirring at room temperature; according to the invention, thebeneficial effects are that the electrolyte wherein the positive electrode and the negative electrode are in direct contact is designed, the attenuation problem of the negative electrode and the positive electrode is solved, the stability of the current zinc-manganese battery based on the neutral aqueous electrolyte is improved, and the purpose of improving the reversibility of the neutral zinc battery is achieved. According to the electrolyte, the organic component is introduced, the electrolyte maintains the high safety characteristic of the original aqueous electrolyte, the introduced organic component is environmentally friendly and low in cost, and the electrolyte is suitable for any battery system based on a zinc metal or zinc alloy negative electrode and batched and large-scale battery preparation and production.
Owner:浙江浙能中科储能科技有限公司 +1
Method of improving center segregation quality of hypo-peritectic steel casting slabs
The invention discloses a method of improving center segregation quality of hypo-peritectic steel casting slabs, and belongs to the technical field of slab continuous casting. According to the method,two pairs of electromagnetic stirring rollers are arranged in a secondary cooling zone, and the two pairs of electromagnetic stirring rollers are installed at corresponding positions 3.5 to 8 m perpendicular distance from a crystallizer meniscus; the two pairs of electromagnetic stirring rollers are arranged in a three-ring manner; magnetic field directions generated by the electromagnetic stirring rollers are changed at intervals of 15 seconds; the current of the first pair of electromagnetic stirring rollers is 200 to 300 A, and the frequency is 2 to 4 Hz; the current of the second pair ofelectromagnetic stirring rollers is 300 to 400 A, and the frequency is 3 to 5 Hz; and meanwhile, the dynamic soft reduction technology is employed for processing nearby a solidification end point, thereduction interval of dynamic soft reduction is arranged at a position that the solid fraction of each casting slab is 10 % to 80 %, the reduction rate is 0.8 to 1.5 mm / m, and the total reduction amount is 4.0 to 5.5 mm. The method disclosed by the invention is capable of stably controlling center segregation of the hypo-peritectic steel casting slabs to be C 0.5 to C 1.5; hot charge rolling is realized on all the hypo-peritectic steel casting slabs; and tensile layering and rupturing of hot-rolled coils (plates) is eliminated.
Owner:MAANSHAN IRON & STEEL CO LTD
Fast production of subsphaeroidal crystal tissue semi-solid aluminium alloy
A prepared method of semi-solid spherocrystal A-alloy is to treating the alloy fusant by the process of 'refining after metamorphism' or 'metamorphism after refining'; preparing the semi-solid by the reversible electromagnetic stirring; monitoring the temperature while stirring until the temperature is under the liquid phase 3-5 Deg C., then cooling and geting the product. The efficient of the process has been improved more greatly than the traditional one, and the alloy has been more available crystal nucleus.
Owner:TSINGHUA UNIV
Alkali metal composite negative electrode and preparation method thereof and application of alkali metal composite negative electrode in preparing solid-state alkali metal battery
ActiveCN110085870AFacilitate depositionFacilitate strippingElectrode carriers/collectorsSecondary cellsSolid state electrolyteIn situ polymerization
The invention discloses an alkali metal composite negative electrode and a preparation method thereof and application of the alkali metal composite negative electrode in preparing a solid-state alkalimetal battery. The alkali metal composite negative electrode comprises a support layer and alkali metal loaded on the surface and the void of the support layer. The support layer is carbon cloth, 3Dporous graphene, a nickel mesh, a copper mesh or an aluminum mesh. The preparation of the solid-state alkali metal battery comprises the steps: placing the support layer in the molten alkali metal under the inert atmosphere, soaking it sufficiently and cooling so as to obtain the alkali metal composite negative electrode; a monomer containing unsaturated bonds, a ceramic electrolyte, a lithium salt and a selectively added functional additive are mixed with an organic solvent so as to obtain a solid-state electrolyte precursor; and assembling the alkali metal composite negative electrode, a positive electrode, a diaphragm and the solid-state electrolyte precursor to form a liquid battery and then adding an initiator and performing in-situ polymerization. The alkali metal composite negativeelectrode can effectively inhibit the formation of alkali metal dendrites and the interface reaction between the alkali metal and the electrolyte, and the prepared solid-state alkali metal battery hasbetter safety performance and comprehensive performance.
Owner:ZHEJIANG UNIV
Dendrite-free and high-rate aluminum ion battery
ActiveCN108376795ALarge specific surface areaIncrease roughnessNegative electrodesSecondary cellsAluminum IonHigh rate
The invention belongs to the technical field of energy storage batteries and particularly relates to a dendrite-free and high-rate aluminum ion battery. The aluminum ion battery comprises an anode, acathode, electrolyte and an isolating membrane, wherein the isolating membrane is arranged between the anode and the cathode; and the cathode is a porous aluminum foil, an included angle between a pore channel direction of the porous aluminum foil and an aluminum ion transmission direction is gamma, and gamma is more than or equal to 0 and less than or equal to 90 degrees. Compared with the priorart, the problem that a dendrite is produced by taking a plane aluminum foil as a cathode of an aluminum ion battery under a large-current long cycle condition is effectively inhibited, and the cycling stability and rate capability of a device are effectively improved; and the technical problems of poor rate capability and cycling stability of the aluminum ion battery caused by the production of the dendrite in the prior art are solved.
Owner:TIANJIN UNIV
Polymer electrolyte capable of working in wide temperature range and preparation method thereof
ActiveCN112358624AImprove stabilityLess side effectsFinal product manufactureElectrolyte accumulators manufacturePolymer electrolytesIn situ polymerization
The invention discloses a polymer electrolyte capable of working in a wide temperature range, a preparation method of the polymer electrolyte and application of the polymer electrolyte in a solid-state lithium (sodium) secondary battery. The polymer electrolyte is prepared from a precursor solution containing a polymeric monomer, an initiator and an electrolyte salt on the surface of a base material in an in-situ polymerization manner, and is of a hyperbranched structure without a main chain and with multiple branched chains. The polymer electrolyte has the advantages of high ionic conductivity and transference number, wide electrochemical window, good mechanical strength and the like, and can stably work in a temperature range of -40-110 DEG C. Meanwhile, the preparation method of the polymer electrolyte is simple, mild in condition, low in preparation cost, easily available in raw materials and suitable for large-scale production. The polymer electrolyte disclosed by the invention isused for constructing a solid-state lithium (sodium) secondary battery, so that the working temperature of the battery can be effectively expanded, and the safety of the battery under extreme workingconditions is improved.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Carbon cloth with uniformly distributed cobalt particles and grown with vertical graphene as well as preparation method and application of carbon cloth
ActiveCN112652749AEvenly distributedEvenly distributed growthSecondary cellsNegative electrodesChemistryElectrochemistry
The invention provides carbon cloth with uniformly distributed cobalt particles and grown with vertical graphene as well as a preparation method and application of the carbon cloth. The preparation method comprises the following steps of growing vertical graphene on carbon cloth through PECVD reaction to obtain first carbon cloth, respectively and uniformly dispersing 2-methylimidazole and cobalt nitrate in water to obtain a first solution, adding the first carbon cloth into the first solution, mixing and stirring, reacting for 4h to 5h to grow Co-MOF, cleaning and drying to obtain second carbon cloth, and carrying out annealing treatment on the second carbon cloth under the protection of argon to obtain the carbon cloth with uniformly distributed cobalt particles and grown with vertical graphene. A sodium ion total battery assembled by the carbon cloth with uniformly distributed cobalt particles and grown with vertical graphene can realize good electrochemical performance.
Owner:ZHANGJIAGANG INST OF IND TECH SOOCHOW UNIV +1
Nano-structure lithium battery electrolyte additive, preparation method thereof and electrolyte
ActiveCN107528089AHigh lithium ion migration numberGood high and low temperature performanceFinal product manufactureNanotechnologyNano structuringSide chain
The invention discloses a nano-structure lithium battery electrolyte additive, a preparation method thereof and electrolyte. The nano-structure lithium battery electrolyte additive is a nano-structure lithium salt and comprises an inorganic rigid nuclear and an organic flexible villus-shaped side chain, and can be stably and uniformly dispersed in the electrolyte. The nano-structure lithium battery electrolyte additive provided by the invention can effectively increase a migration number of lithium ions of the electrolyte, can improve the high-low-temperature performance and safety of the electrolyte, and has significant effect for inhibiting dendritic crystals of a lithium ion battery and a metal lithium battery when in low-temperature fast charging.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
Polymer electrolyte and preparation method and application thereof
ActiveCN112979875AImproved thermal dimensional stabilityAvoid destructionSolid electrolytesFinal product manufacturePolymer electrolytesPolymer science
The invention discloses a polymer electrolyte and a preparation method and application thereof. The polymer electrolyte comprises a polymer matrix, the polymer matrix is a polymer formed by self-polymerization of a polymeric monomer composed of three building blocks of acryloyl, carbamate and phosphate, or a polymer formed by copolymerizing a polymeric monomer and other monomers, wherein the polymeric monomer is composed of three building blocks, namely acryloyl, carbamate and phosphate. The polymer electrolyte can be used in a battery, the polymer matrix can be subjected to a self-crosslinking reaction at a high temperature of 130-190 DEG C to generate a compact thermosetting polymer which can cut off ion transmission and prevent thermal runaway of the battery; the self-crosslinking reaction is an endothermic reaction, so that the temperature of the battery can be quickly reduced, and the thermal runaway of the battery can be prevented; the polymer electrolyte can capture free radicals and has intrinsic flame retardance; and the characteristics of the polymer matrix are synergistic, so that the thermal runaway of the battery can be effectively prevented.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
High-ceramic-content composite solid electrolyte, and preparation method thereof
PendingCN111509290ASimple manufacturing methodIncrease productionSolid electrolytesFinal product manufacturePhysical chemistrySlurry
The invention relates to the field of electrochemical energy storage, particularly to a composite solid electrolyte with high ceramic content, and a preparation method thereof. The composite solid electrolyte comprises the following components: perovskite type solid electrolyte LLTO, PAN and a lithium salt, wherein the mass fraction of LLTO is 60-85%. The preparation method comprises the followingsteps: preparing LLTO powder with an average particle size of 0.01-50 microns; mixing the LLTO powder with PAN and the lithium salt, adding an N,N-dimethylformamide solvent, and carrying out ball milling (or stirring or ultrasonic treatment) to obtain slurry; and finally coating a clean glass plate with the obtained slurry by adopting a casting molding method, and heating and drying in a vacuum drying oven to obtain the composite solid electrolyte. The composite solid electrolyte disclosed by the invention has the advantages of high lithium ion conductivity (0.1-5 mScm<-1>), good flexibility,simple preparation method and the like, and is suitable for the fields of lithium ion batteries, flow batteries and the like.
Owner:THE HONG KONG UNIV OF SCI & TECH
Method for synthesizing porphyrin-based two-dimensional metal organic framework nanosheet array on zinc substrate and battery
ActiveCN114744143AGuaranteed ion transmissionNovel structureElectrochemical processing of electrodesNanotechnologyElectrical batteryMetal-organic framework
The invention belongs to the technical field of electrochemical power supplies, and particularly relates to a method for synthesizing a porphyrin-based two-dimensional metal organic framework (MOF) nanosheet array on a zinc substrate, which at least comprises the following steps: 1, preparing a solution: dispersing a precursor of a porphyrin structure containing carboxyl in a mixed solvent to obtain a precursor solution; 2, the precursor solution and a zinc substrate are subjected to a reaction, and a porphyrin-based two-dimensional Zn-MOF array is obtained; and step 3, washing the porphyrin-based two-dimensional Zn-MOF array obtained in the step 2 with a solvent, and then removing the solvent, so that the porphyrin-based two-dimensional MOF nanosheet array is attached to the zinc substrate. The MOF open-pore array structure is efficiently synthesized through a surfactant-free substrate induction method, and the MOF open-pore array structure is used for the negative electrode of the metal ion battery, so that U-shaped deposition of metal can be induced, generation of dendritic crystals can be inhibited, and the cycle performance of the metal ion battery is improved. Meanwhile, the MOF nano array is simple to synthesize and suitable for large-scale production.
Owner:TIANJIN UNIV
Zinc battery negative electrode protected by hydrophobic layer, preparation method and battery
PendingCN114005949AInhibit negative electrode hydrogen evolutionImprove cycle performanceElectrode manufacturing processesFinal product manufactureElectrical batteryPhysical chemistry
The invention discloses a zinc battery negative electrode protected by a hydrophobic layer, a preparation method and a battery, and belongs to the technical field of electrochemistry. The method is characterized in that a layer of titanate and hydrophobic binder mixture is arranged on the surface of the zinc battery negative electrode active material to form a zinc negative electrode protection layer, the protection layer has certain hydrophobicity, is stable in structure, can effectively inhibit hydrogen evolution of a zinc negative electrode and can inhibit zinc dendrites, and therefore, the zinc negative electrode provided with the hydrophobic protective layer and the battery adopting the negative electrode can remarkably improve the charge-discharge cycle performance.
Owner:张韩生
Method for preparing solid polymer electrolyte by doping magnetic field orientation organic modified magnetic nanofibers
ActiveCN111725566AImprove ionic conductivityImprove securityMaterial nanotechnologyFinal product manufacturePolymer electrolytesAll solid state
The invention discloses a method for preparing a solid polymer electrolyte by doping magnetic field oriented organic modified magnetic nanofibers. The high-ionic-conductivity solid polymer electrolytefor the all-solid-state lithium battery is prepared by utilizing magnetic field oriented organic modified magnetic sepiolite, and organic modified magnetic sepiolite particles are directionally arranged in the PEO polymer electrolyte under the action of a magnetic field so that the polymer solid electrolyte with high ionic conductivity and high safety is obtained.
Owner:UNIV OF SCI & TECH OF CHINA
A kind of polymer electrolyte and its preparation method and application
ActiveCN112979875BImproved thermal dimensional stabilityAvoid destructionSolid electrolytesFinal product manufacturePolymer electrolytesPolymer science
The invention discloses a polymer electrolyte and a preparation method and application thereof, wherein the polymer electrolyte comprises a polymer matrix, and the polymer matrix is composed of three blocks of acryl, urethane and phosphate. The polymer formed by the self-polymerization of the polymerized monomer, or the polymer formed by the copolymerization of the polymerized monomer composed of the three building blocks of acryl, urethane and phosphate ester and other monomers. The polymer electrolyte can be used in a battery, and the polymer matrix can undergo a self-crosslinking reaction at a high temperature of 130-190° C. to generate a dense thermosetting polymer that can cut off ion transport and prevent the occurrence of thermal runaway of the battery; and The self-crosslinking reaction is an endothermic reaction, which helps to quickly reduce the battery temperature and prevent the battery from thermal runaway; the polymer electrolyte can also capture free radicals and has intrinsic flame retardancy; the above characteristics of the polymer matrix act synergistically , which can effectively prevent the occurrence of thermal runaway of the battery.
Owner:中科深蓝汇泽新能源(青岛)有限责任公司
A kind of alkali metal composite negative electrode and its preparation method and its application in the preparation of solid alkali metal battery
ActiveCN110085870BDendrite suppressionImprove mechanical propertiesElectrode carriers/collectorsSecondary cellsSolid state electrolytePorous graphene
The invention discloses an alkali metal composite negative electrode and a preparation method thereof and application of the alkali metal composite negative electrode in preparing a solid-state alkalimetal battery. The alkali metal composite negative electrode comprises a support layer and alkali metal loaded on the surface and the void of the support layer. The support layer is carbon cloth, 3Dporous graphene, a nickel mesh, a copper mesh or an aluminum mesh. The preparation of the solid-state alkali metal battery comprises the steps: placing the support layer in the molten alkali metal under the inert atmosphere, soaking it sufficiently and cooling so as to obtain the alkali metal composite negative electrode; a monomer containing unsaturated bonds, a ceramic electrolyte, a lithium salt and a selectively added functional additive are mixed with an organic solvent so as to obtain a solid-state electrolyte precursor; and assembling the alkali metal composite negative electrode, a positive electrode, a diaphragm and the solid-state electrolyte precursor to form a liquid battery and then adding an initiator and performing in-situ polymerization. The alkali metal composite negativeelectrode can effectively inhibit the formation of alkali metal dendrites and the interface reaction between the alkali metal and the electrolyte, and the prepared solid-state alkali metal battery hasbetter safety performance and comprehensive performance.
Owner:ZHEJIANG UNIV
A dendrite-free, high-rate aluminum-ion battery
ActiveCN108376795BHigh magnificationImprove charge and discharge rateNegative electrodesSecondary cellsAluminum IonAluminium-ion battery
The invention belongs to the technical field of energy storage batteries and particularly relates to a dendrite-free and high-rate aluminum ion battery. The aluminum ion battery comprises an anode, acathode, electrolyte and an isolating membrane, wherein the isolating membrane is arranged between the anode and the cathode; and the cathode is a porous aluminum foil, an included angle between a pore channel direction of the porous aluminum foil and an aluminum ion transmission direction is gamma, and gamma is more than or equal to 0 and less than or equal to 90 degrees. Compared with the priorart, the problem that a dendrite is produced by taking a plane aluminum foil as a cathode of an aluminum ion battery under a large-current long cycle condition is effectively inhibited, and the cycling stability and rate capability of a device are effectively improved; and the technical problems of poor rate capability and cycling stability of the aluminum ion battery caused by the production of the dendrite in the prior art are solved.
Owner:TIANJIN UNIV
Carbon cloth with vertical graphene with uniform distribution of cobalt particles and its preparation method and application
ActiveCN112652749BEvenly distributedSimple structureSecondary cellsNegative electrodesPhysical chemistryGraphite
The invention provides a carbon cloth with vertical graphene with evenly distributed cobalt particles, its preparation method and application. The preparation method comprises: growing vertical graphene on carbon cloth by PECVD reaction to obtain the first carbon cloth; uniformly dispersing 2-methylimidazole and cobalt nitrate in water respectively to obtain the first solution; adding the first carbon cloth to Mix and stir in the first solution, react for 4h-5h to grow Co-MOF, wash and dry to obtain the second carbon cloth; anneal the second carbon cloth under the protection of argon to obtain vertical graphene with evenly distributed cobalt particles carbon cloth. The sodium-ion full battery assembled from the carbon cloth with vertical graphene with cobalt particles uniformly distributed in the present invention can achieve good electrochemical performance.
Owner:ZHANGJIAGANG INST OF IND TECH SOOCHOW UNIV +1
Tubular nanofiber material, negative pole piece and lithium metal battery
PendingCN114635200AFor precise controlDendrite suppressionHollow filament manufactureFibre treatmentElectrical batteryPolymer chemistry
Owner:NINGDE AMPEREX TECH
Solid electrolyte, and lithium metal anode and a preparation method thereof
ActiveCN112117488AImprove electrochemical performanceHelp with migrationSolid electrolytesSecondary cellsSolid state electrolyteLithium metal
The invention provides a solid electrolyte, and a lithium metal anode and a preparation method thereof. The solid electrolyte is a composite polymer electrolyte formed by compounding lithium lanthanumtitanium oxide and linear polyurethane. The preparation method comprises the following steps: firstly, preparing lithium lanthanum titanium oxide particles with a complete crystalline phase through aprocess of combining hydrothermal synthesis and high-temperature calcination; and then, blending and stirring the lithium lanthanum titanium oxide particles and linear polyurethane, and carrying outsolvent evaporation treatment to prepare the solid electrolyte. The lithium ion conductivity of the solid electrolyte prepared by the method at room temperature reaches 3.8*10<4>Scm<1>. Meanwhile, thebattery assembled by the solid electrolyte shows excellent cycle performance and excellent specific capacity at room temperature. The lithium metal anode can be obtained by compounding the solid electrolyte and a lithium metal sheet.
Owner:HUAZHONG UNIV OF SCI & TECH
Solid electrolyte, lithium metal negative electrode and preparation method thereof
ActiveCN112117488BImprove electrochemical performanceHelp with migrationSolid electrolytesSecondary cellsSolid state electrolyteLithium metal
The invention provides a solid electrolyte, a lithium metal negative electrode and a preparation method thereof. The solid electrolyte is a composite polymer electrolyte composed of lithium lanthanum titanium oxide and linear polyurethane. The preparation method is as follows: firstly, lithium lanthanum titanyl oxide particles with complete crystalline phase are prepared by combining hydrothermal synthesis and high-temperature calcination; then, lithium lanthanum titanyl oxide particles and linear polyurethane are blended and stirred, and solvent evaporation is performed , to prepare a solid electrolyte. The lithium ion conductivity of the solid electrolyte prepared by the present invention at room temperature reaches 3.8×10 ‑4 S cm ‑1 . At the same time, the battery assembled with this solid electrolyte exhibits excellent cycle performance and excellent specific capacity at room temperature. In the invention, the lithium metal negative electrode can be obtained by combining the solid electrolyte and the lithium metal sheet.
Owner:HUAZHONG UNIV OF SCI & TECH
Lithium-free dendrite anode with carbon nanotube film directly compounded with molten lithium metal and preparation method thereof
ActiveCN111900333BIncrease in sizeReduce energy densityMaterial nanotechnologyElectrode carriers/collectorsFree energiesPhysical chemistry
Owner:JIANGXI UNIV OF SCI & TECH
A negative electrode of metal lithium secondary battery and application thereof
ActiveCN108155345BDendrite suppressionImprove efficiencyFuel and primary cellsNon-aqueous electrolyte accumulator electrodesMetallic lithiumChemical physics
The invention relates to an anode of a lithium rechargeable battery. The anode comprises a lithium plate as the anode; a modified graphene layer is arranged on the surface of one side of the lithium plate. The anode of the lithium rechargeable battery can effectively inhibit the metal lithium dendrite. The lithium rechargeable battery with a composite layer, disclosed by the invention, has bettercyclic performance and coulomb efficiency.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Electrode treated by persulfate and application thereof
PendingCN112952123AIncreased oxygen-containing functional groupsImprove electrode activityCell electrodesRegenerative fuel cellsElectro conductivityCharge and discharge
The invention discloses an electrode treated by persulfate and application of the electrode in a zinc-iron flow battery, an electrode material is soaked in an aqueous solution of persulfate for treatment, and compared with an original untreated electrode material, the electrode material has higher electrode activity, the conductivity of the battery can be effectively improved, and the cycle performance and the efficiency of the battery are improved; meanwhile, the charge-discharge capacity and the energy density of the battery are greatly improved.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Three-dimensional carbon material, preparation method and application thereof
ActiveCN112751028BImprove securitySolution to short lifeCell electrodesSecondary cellsElectrical batteryLithium metal
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
A kind of electrolyte solution for secondary zinc-nickel battery and preparation method thereof
ActiveCN111463503BExtend your lifeImprove conductivityFinal product manufactureAlkaline accumulators manufactureElectrolytic agentPhysical chemistry
The invention discloses an electrolyte solution for a secondary zinc-nickel battery and a preparation method thereof. The preparation method of the invention includes compounding and constant volume of various battery electrolyte raw materials. The electrolyte solution prepared by the invention includes the following mass components: Raw materials: 25‑50w% alkali, 0.01‑5w% LiOH / lithium salt, 0.1‑5w% boric acid and / or borate, 0.01‑1w% aluminum-containing substances, 5‑15w% ZnO, 0.005‑ 0.03w% SiO 2 , and the balance is pure water; the electrolyte solution prepared by the invention has good circulation performance, long service life and high commercial value.
Owner:山东合泰新能源有限公司
A kind of intrinsically safe electrolyte for secondary lithium-sulfur battery and preparation method thereof
ActiveCN109599592BImprove electrochemical performanceImprove securityLi-accumulatorsOrganic electrolytesElectrolytic agentOrganic solvent
The present invention relates to an intrinsically safe electrolyte for a secondary lithium-sulfur battery and a preparation method thereof. The electrolyte comprises a lithium salt and an organic solvent, and the organic solvent is a phosphate solvent or a phosphate solvent and a hydrofluoroether. A mixed solvent composed of a similar solvent; lithium salt is added to the organic solvent, and the electrolyte is uniformly stirred to form an electrolyte, that is, an intrinsically safe electrolyte for a secondary lithium-sulfur battery is prepared. Compared with the prior art, the lithium-sulfur battery after using the electrolyte can realize safe cycling, which is embodied in the uniform lithium deposition morphology, no obvious dendrites and complete flame retardancy. On this basis, the electrochemical performance is significantly improved. , which is more advantageous than other sulfur materials and lithium metal batteries.
Owner:SHANGHAI JIAOTONG UNIV
Separator for electricity storage devices, and electricity storage device
PendingCN113812038ADendrite suppressionImprove securityHybrid capacitor separatorsHybrid capacitor electrolytesComposite materialEngineering
A separator for electricity storage devices according to the present invention comprises an active layer that contains an Li-absorbing material; and the active layer has an electrical resistivity in the plane direction of 100,000 Omega cm or more and an air permeability of 650 s or less.
Owner:ASAHI KASEI KK
A lithium metal negative electrode and its preparation and application
ActiveCN112786835BImprove deposition uniformityEasy transferNegative electrodesLi-accumulatorsElectrolytic agentOrganic Ester
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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