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37results about How to "Raise the voltage window" patented technology
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Super-capacitor electrode based on vertical oriented graphene and manufacturing method thereof
InactiveCN102568853AFacilitated DiffusionEasy transferElectrolytic capacitorsIonic diffusionAdhesive
The invention discloses a super-capacitor electrode based on vertical oriented graphene and a manufacturing method thereof. The electrode comprises a current collector and a graphene nanosheet, wherein the graphene nanosheet is vertical to the surface of the current collector; each graphene nanosheet comprises 1-10 layers of graphene. In the manufacturing process, the current collector is heated to 600-1000 DEG C; a carbon element contained gas is adopted as a precursor gas to generate a plasma; the current collector is placed in the plasma; a vertical oriented graphene nanosheet directly grows on the surface of the current collector by using a plasma reinforced chemical vapor deposition method, and after the vertical oriented graphene nanosheet grows for 5 minutes to 8 hours, the obtained current collector with the vertical oriented graphene nanosheet grown on the surface is the super-capacitor electrode. The super-capacitor electrode with the vertical oriented graphene as active material can be made in one step so that the use of adhesives and agglomeration of graphene are avoided, the benefit of material infiltration and ionic diffusion is achieved and the potential in effective energy storage area of the graphene and the property of the super-capacitor is improved.
Owner:ZHEJIANG UNIV
Li-ion supercapacitor
The invention provides a Li-ion supercapacitor. The active material of a positive plate of the Li-ion supercapacitor comprises a porous carbon material and LiNixCoyMnzO2; the porous carbon material is at least one of active carbon, an active carbon fiber, porous graphitized carbon black and graphene; the ratio of the porous carbon material to LiNixCoyMnzO2 is (1:1)-(1:4), wherein x+y+z=1, x:y:z=5:2:3 or x:y:z=5:3:2 or x:y:z=6:2:2 or x:y:z=7:1.5:1.5 or x:y:z=8:1:1; the active material of a negative plate is at least one of synthetic graphite, interphase graphite, mesocarbon microbeads, hard carbon and soft carbon; the mass ratio of the LiNixCoyMnzO2 contained in the positive plate to the active material contained in the negative plate is 0.5-1.6; the electrolyte of the Li-ion supercapacitor consists of an electrolyte salt and an organic solvent; the electrolyte salt is selected from LiPF6 or LiBF4 or LiBOB or LiFSI; and the organic solvent is at lest one of ethylene carbonate, carbonic allyl ester, carbonic methyl ester, methyl carbonate, diethyl carbonate and acetonitrile.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
All-solid composite polymer electrolyte and preparation method thereof, and lithium ion battery
InactiveCN110429344AHigh conductivity at room temperatureImproved interface contactFinal product manufactureElectrolyte accumulators manufacturePolymer scienceSolvent
The invention discloses an all-solid composite polymer electrolyte and a preparation method thereof, and a lithium ion battery. The method comprises the following steps of: S1, preparing a polymer matrix membrane by adopting a phase inversion method, wherein the polymer matrix membrane has a plurality of closely arranged vertical through holes; S2, gradually adding inorganic powder, lithium salt,a second polymer and an appropriate amount of auxiliary agent into a solvent for uniform stirring in an argon-filled glove box to obtain a polymer electrolyte, then, performing scrap coating of the polymer electrolyte in an environment controlled in moisture and oxygen to form a film, performing standing at room temperature to perform vacuum drying to obtain a polymer electrolyte film; and S3, putting the polymer electrolyte film prepared in the S2 at the upper portion of the polymer matrix membrane in the S1, performing melting and hot-pressing of the polymer electrolyte in a vacuum oven at atemperature of 100-350 DEG C into the vertical holes of the polymer matrix membrane. The all-solid composite polymer electrolyte is high in room-temperature conductivity and good in interface contact, has a high modulus and a high voltage window and is simple to prepare and low in cost.
Owner:SHENZHEN BAK POWER BATTERY CO LTD
Preparation method of high-voltage-resistant solid polymer electrolyte
ActiveCN109301317AImprove high pressure performanceIncrease energy densitySolid electrolytesLi-accumulatorsPolymer scienceNanowire
A preparation method of a high-voltage-resistant solid polymer electrolyte includes the steps of: 1) according to certain ratio, dissolving a polymer substrate, lithium salt, and an inorganic additivein anhydrous acetonitrile and stirring the mixture at room temperature to obtain a uniform solution, wherein the polymer substrate is polyoxyethylene, the lithium salt is lithium bistrifluoromethylsulfonimide or lithium perchlorate; the inorganic additive is nano-wires or nano-particles of zinc borate, aluminum borate, sodium tetraborate, barium metaborate or calcium borate, the mass ratio of thepolyoxyethylene to the lithium salt EO : Li<+> is 10-20:1, and the mass of the inorganic additive is not more than 20% of the total mass of the polymer substrate and lithium salt; 2) pouring the solution into a polytetrafluoroethylene mold to volatilize the solution until completely dried, thus preparing the solid polymer electrolyte. The method improves the high-voltage resistance of the solid polymer electrolyte, so that the product fits a high-voltage ternary cathode material and energy density and safety of an all-solid-state battery are improved.
Owner:ZHEJIANG UNIV OF TECH
High-voltage and high-rate type lithium cobalt oxide cathode material and preparation method thereof
InactiveCN105591081AImprove Capacitive PerformanceImproved magnification performanceSecondary cellsPositive electrodesHigh rateCarbonate
The invention discloses a high-voltage and high-rate type lithium cobalt oxide cathode material and a preparation method thereof. The preparation method comprises steps as follows: cobalt oxide and lithium carbonate are taken as precursors, magnesium carbonate is added, and lithium cobalt oxide can be obtained after primary sintering and breaking; an aluminum alkoxide and titanate mixed alcoholic solution is added, secondary sintering is performed after mixing, and lithium cobalt oxide can be obtained. When discharge voltage is up to 4.5 V and the rate is 0.2C (1C=177.5 mAh / g), specific capacity of lithium cobalt oxide prepared with the method is higher than 190 mAh / g, rate performance of 1C / 0.2C is higher than 98%, and 3.6V voltage platform occupancy is higher than 99%; the material has the characteristics of stable structure and smaller specific discharge capacity attenuation in a high-voltage and high-rate charging and discharging process; according to the method, a voltage window, capacity performance and rate performance of the lithium cobalt oxide cathode material are successfully improved, further, the technology is simple, the implementation is convenient, the cost is low, and the prepared high-voltage and high-rate type lithium cobalt oxide cathode material has excellent electrochemical performance.
Owner:ENERGY RESOURCES INST HEBEI ACADEMY OF SCI
Solid electrolyte composite membrane, preparation method thereof and solid-state battery
PendingCN119400934AImprove ionic conductivitygood chemical stabilitySecondary cells servicing/maintenanceLi-accumulatorsSolid state electrolyteElectrolytic agent
The invention relates to the technical field of solid-state batteries, in particular to a solid-state electrolyte composite membrane, a preparation method thereof and a solid-state battery. The preparation method comprises the following steps: performing ultrasonic-initiated cross-linking polymerization on a polymer solid electrolyte monomer, a cross-linking agent and a surface hydroxylated oxide solid electrolyte to obtain a polymer-oxide solid electrolyte matrix, washing the polymer-oxide solid electrolyte matrix, and soaking the polymer-oxide solid electrolyte matrix in an electrolyte to obtain the solid electrolyte composite membrane. According to the invention, crosslinking of the polymer electrolyte monomer is initiated by ultrasound, and chemical bonds are formed between part of the polymer electrolyte monomer and the surface-hydroxylated oxide solid electrolyte, so that the interfacial compatibility of the polymer electrolyte monomer and the surface-hydroxylated oxide solid electrolyte is effectively improved, and the ionic conductivity, chemical stability and mechanical strength of the polymer electrolyte are improved; due to the properties of easy processing, good flexibility and the like of the polymer electrolyte, the interface compatibility between the oxide solid electrolyte and the positive and negative pole pieces can be fully improved, the flexibility and the processability are improved, and a win-win effect is achieved.
Owner:SVOLT ENERGY TECHNOLOGY CO LTD
Multilayer composite solid electrolyte as well as preparation method and application thereof
ActiveCN119419354Aimprove stabilityImprove cycle stabilityElectrolytesLi-accumulatorsSolid state electrolyteElectrical battery
The invention belongs to the technical field of lithium ion batteries, and discloses a multi-layer composite solid electrolyte and a preparation method and application thereof, the preparation method comprises the following steps: mixing a lithium salt A, a polymer and a solvent to obtain slurry A, and drying the slurry A to obtain a negative electrode side solid electrolyte; mixing a lithium salt B, a polymer, MOF and a solvent to obtain slurry B, coating a negative electrode side solid electrolyte membrane with the slurry B, and drying to obtain an intermediate product; and mixing a lithium salt C, a polymer and a solvent to obtain slurry C, coating the intermediate product with the slurry C, and drying to obtain the multi-layer composite solid electrolyte, the lithium salt A is prepared by mixing any one of LiBOB and LiDFOB with LIFSI; and the lithium salt C is prepared by mixing any one of LiDFP and LiNO3 with LIFSI. The prepared multi-layer composite solid electrolyte can improve the cycling stability and the voltage window of the battery.
Owner:ZHUJI PAWA NEW ENERGY CO LTD
Preparation method of low-temperature solid electrolyte and application of low-temperature solid electrolyte in low-temperature solid supercapacitor
ActiveCN113035587ASimple manufacturing methodEasy to operateHybrid capacitor electrolytesHybrid/EDL manufactureSolid state electrolyteHexafluoropropylene
The invention relates to a preparation method of a low-temperature solid electrolyte and application of the low-temperature solid electrolyte in a low-temperature solid supercapacitor. The preparation method comprises the steps that acetone is added into polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) and fully dissolved to obtain a transparent viscous solution A; an electrolyte salt is added into a solvent and uniformly mixed to obtain an electrolyte solution B; the solution A and the solution B are uniformly mixed to obtain a precursor solution C; and the precursor solution coats a clean and smooth substrate through blade coating or curtain coating and subjected to natural drying to obtain a low-temperature solid electrolyte membrane with a size of 20-100 microns. The prepared solid electrolyte has high conductivity at a low temperature; the preparation method is simple, easy to implement and wide in applicability; and when the low-temperature solid electrolyte is applied to the preparation of the low-temperature solid supercapacitor, the working temperature of the prepared solid supercapacitor is as low as -60 DEG C, the solid supercapacitor has excellent rate capability, low internal resistance, high energy density and long cycle life at low temperature, and the application range of the low-temperature solid supercapacitor in the fields of military industry or civil use and the like is widened.
Owner:XI AN JIAOTONG UNIV
Method for preparing high-energy-density supercapacitor by taking oxide as template
InactiveCN107195477ARaise the voltage windowIncrease energy densityHybrid capacitor electrolytesHybrid capacitor electrodesHigh energyHigh voltage
The invention provides a method for preparing a high-energy-density supercapacitor by taking oxide as a template. The method belongs to the technical field of supercapacitors, and comprises the steps of: mixing the oxide, polyvinylidene chloride and melamine in an organic solvent, and conducting ball milling on the mixture to obtain a precursor; placing the precursor in an oven for drying, increasing the temperature quickly under the condition of inert gas protection, and calcining the precursor at high temperature to obtain a porous mesoporous carbon material; and pickling the obtained carbon material, and then forming the capacitor by adopting the pickled carbon material and a neutral electrolyte. Tests show that the prepared supercapacitor has a very high voltage window which can be up to 1.8 v while the energy density is up to 21.5 Wh / kg<-1>.
Owner:BEIJING UNIV OF CHEM TECH
Sodium-ion battery electrolyte as well as preparation method and application thereof
InactiveCN119297406ARaise the voltage windowImprove stabilitySecondary cellsElectrolytic agentElectrical battery
The invention discloses a sodium-ion battery electrolyte as well as a preparation method and application thereof, and belongs to the technical field of battery electrolytes. According to the preparation method disclosed by the invention, the boric acid ester additive is added into the basic electrolyte, and the boric acid ester is preferentially decomposed in the battery circulation process, so that the generated boron-containing substance can inhibit the side reaction of the electrolyte and increase the stability of the electrolyte; the boric acid ester preferably participates in the formation of electrode / electrolyte interface layers on the two sides of the positive electrode and the negative electrode, and the boric acid ester assists in dissolving NaF with low ionic conductivity at the electrode / electrolyte interface and promotes dissociation of sodium salt in the electrolyte to increase free sodium ions, so that the diffusion rate of the sodium ions is improved, and the performance of the sodium-based half cell and the sodium-based total cell is improved; and the capacity retention ratio and the rate capability of the sodium-nickel iron sodium manganate battery at room temperature or low temperature can be improved.
Owner:HARBIN UNIV OF SCI & TECH
Zinc-cobalt bimetallic oxide sandwich structure flexible film electrode and preparation method thereof
ActiveCN112185715ARaise the voltage windowImprove stabilityHybrid capacitor electrodesHybrid/EDL manufactureCarbon nanotubeElectrode material
Owner:GUANGXI UNIV
Two-dimensional metal titanium carbide loaded MnOx quantum dot electrode material and application thereof
ActiveCN113889347AHigh specific capacityRaise the voltage windowHybrid capacitor electrodesComposite materialCapacitance
The invention discloses a two-dimensional metal titanium carbide loaded MnOx quantum dot electrode material which is an MXene loaded manganese oxide nano dot composite material prepared by taking MXene with high conductivity as a base material and manganese carbonyl as a precursor through a simple solvothermal reaction. And the ionic liquid is selected as the electrolyte, so that the working voltage window is further widened, and the energy density is improved. The oxide nanodot is a pseudocapacitance material with a quantum size effect, and the composite material prepared by loading the oxide nanodot on the surface of MXene can improve the reaction activity and increase pseudocapacitance; as a barrier material, the nanodots can avoid stacking and collapse of MXene sheet layers; the prepared composite material is further prepared into an electrode for a supercapacitor, and an electrochemical test result in an ionic liquid electrolyte shows that the specific capacity and the rate capability are remarkably improved. And the method has certain universality, can be applied to systems of other electrode materials loaded with ultra-small-size metal oxides, and has a relatively good application prospect.
Owner:NORTHWEST UNIV
Electrolyte, lithium ion battery and electronic device
PendingCN119419364Aincrease storage capacityImprove cycle performanceElectrolytesElectrolyte accumulators manufactureElectrolytic agentElectrical battery
The invention provides an electrolyte, a lithium ion battery comprising the electrolyte and an electronic device. The electrolyte comprises a fluorinated solvent and a polycarbonate solvent, based on the total mass of the electrolyte, the mass content of the fluorinated solvent is A wt%, the mass content of the polycarbonate solvent is B wt%, and the electrolyte meets the relational expression that A / B is larger than or equal to 0.5 and smaller than or equal to 20. The electrolyte provided by the invention can improve the storage performance and cycle performance of the lithium ion battery at high temperature and high pressure.
Owner:ZHUHAI COSMX BATTERY CO LTD
Preparation methods of porous carbon fiber/metal oxide composite material and graphene-based conductive ink and application of graphene-based conductive ink in supercapacitor
ActiveCN113470981AReduce manufacturing costImprove ion transport capacityHybrid capacitor electrodesHybrid/EDL manufactureFiberCarbon fibers
The invention provides preparation methods of a porous carbon fiber / metal oxide composite material and a graphene-based conductive ink and an application of the graphene-based conductive ink in a supercapacitor. The preparation method of the composite material comprises the following steps: (1) carrying out high-temperature carbonization treatment on absorbent cotton at 900-1200 DEG C, cooling, and grinding to obtain porous carbon fibers; (2) placing the porous carbon fibers in a metal salt aqueous solution, stirring at a constant temperature, centrifuging, and drying to obtain a porous carbon fiber / metal salt composite material; and (3) roasting the composite material in a protective atmosphere, cooling, and grinding. According to the invention, the porous carbon fiber / metal oxide composite material which is uniform in compounding, high in metal oxide loading capacity, high in binding force and excellent in electrochemical energy storage performance can be prepared; and in order to realize printing of the composite electrode material, a small amount of graphene is added as a conductive channel between carbon fibers, and a water-based flexible supercapacitor based on the graphene-coated three-dimensional porous carbon fiber / metal oxide composite material is prepared by using a silk-screen printing method.
Owner:HUNAN UNIV
Preparation method of sodium manganese oxide and application of sodium manganese oxide in super capacitor
InactiveCN113387392AAdvantages of preparation methodSimple manufacturing processHybrid capacitor electrodesNanotechnologyElectrolytic agentArgon atmosphere
The invention relates to a preparation method of a sodium manganese oxide and an application of the sodium manganese oxide in a super capacitor. The preparation method comprises the steps of firstly, employing a coprecipitation method to mix a divalent manganese salt and a sodium hydroxide solution to form a Mn (OH) 2 suspension, and then carrying out washing-solid-liquid separation for several times to obtain Mn (OH) 2 precipitate powder; and grinding the precipitate and sodium hydroxide, sintering in an argon atmosphere at 300-900 DEG C to obtain a product, cooling to room temperature, taking out the product, washing with water for several times, and drying in a vacuum drying oven to obtain the manganese oxide doped with high sodium content. The prepared sodium manganese oxide is prepared into an electrode to form an asymmetric water system supercapacitor together with an activated carbon electrode, so that the electrochemical performance of the device is favorably improved. The sodium manganese oxide prepared by the method is low in cost, has the advantages of high specific capacitance, wide charge-discharge voltage window, long cycle service life and the like in an aqueous electrolyte, is simple in preparation process, and can realize macro-scale preparation.
Owner:NANCHANG UNIV
A kind of ionic liquid electrolyte and lithium battery
ActiveCN109841901BImprove conductivityHigh capacity retentionLi-accumulatorsPhysical chemistryPyrrolidine
The invention discloses an ionic liquid electrolyte and a lithium battery using the ionic liquid electrolyte, belonging to the related technical field of lithium batteries. The ionic liquid electrolyte includes an ionic liquid, and the ionic liquid is a pyrrolidine ionic liquid containing a long polyether chain segment , can effectively improve the conductivity of the ionic liquid electrolyte, and the preferred voltage window of the pyrrolidine-based ionic liquid electrolyte containing carbonate groups is significantly improved, and the battery using the ionic liquid electrolyte still has Higher capacity retention.
Owner:BEIJING WELION NEW ENERGY TECH CO LTD
Super capacitor
InactiveCN112885611ARaise the voltage windowIncrease energy densityMaterial nanotechnologyHybrid capacitor electrolytesComposite structureElectrolyte
The invention relates to a super capacitor which comprises an elastomer, an inner electrode, a first electrolyte layer and an outer electrode, the inner electrode, the first electrolyte layer and the outer electrode sequentially wrap the outer surface of the elastomer, the inner electrode comprises a first carbon nanotube layer and a NiO@MnOX composite structure, and the outer electrode comprises a second carbon nanotube layer and a Fe2O3 particle layer.
Owner:TSINGHUA UNIV +1
Preparation method of Ni(OH)2/graphene composite material and preparation method of supercapacitor
ActiveCN113415831AReduce surface functional groupsAvoid reunionHybrid capacitor electrodesGraphenePorous grapheneGraphite oxide
The invention discloses a preparation method of a Ni(OH)2 / graphene composite material, which comprises the following steps of adding porous graphene oxide dispersion liquid into N, N-dimethylformamide, adding nickel acetate, reacting at constant temperature, centrifuging and washing, and dissolving the washed product in water, carrying out hydrothermal reaction, and after the reaction is finished, drying to obtain the Ni(OH)2 / graphene composite material. The invention also provides a method of the supercapacitor. The method comprises the following steps that Ni(OH)2 / HGO ink is prepared from the Ni(OH)2 / graphene composite material; and the silver paste and the Ni(OH)2 / HGO ink are sequentially overlaid and brushed on a PET plate through silk-screen printing to form a pattern, and drying is carried out to complete the preparation of the supercapacitor. According to the Ni(OH)2 / HGO composite nano material prepared by the invention, the voltage window of the supercapacitor can be improved to a great extent, so that the energy density of the supercapacitor is improved to a great extent.
Owner:HUNAN UNIV
Preparation method and application of an aqueous high-voltage electrode material
ActiveCN109786126BIncrease loadHigh specific capacitanceHybrid capacitor electrolytesHybrid capacitor electrodesCarbon nanowallsHigh energy
The invention discloses a preparation method of a water system high-voltage electrode material. The preparation method comprises the following steps: preparing carbon cloth / carbon nanometer wall withhigh conductivity and high specific surface as a base material; preparing Na0.5MnO2 nanosheet array through electrochemical deposition and electrochemical oxidation method; obtaining the carbon cloth / carbon nanometer wall / Na0.5MnO2 nanosheet positive material; preparing the carbon-clad porous VN nanosheet array through hydrothermal method and subsequent annealing; and obtaining the carbon cloth / carbon nanometer wall / carbon-clad porous VN nanosheet negative material. The above material is applied to preparing the asymmetric water system super capacitor. The working voltage of the asymmetric water system super capacitor prepared through the invention can achieve 2.6V, and the super capacitor has the energy density of 96.7 Whkg-1, excellent cyclic stability, and security, and an effective method is provided for designing and preparing the high-energy density super capacitor.
Owner:NANCHANG UNIV
Method for preparing transition metal complex heteroatom-doped porous carbon materials by impregnating recrystallized carbonized biomass
ActiveCN105923629BLarge specific surface areaImprove conductivityCarbon compoundsHigh current densityPorous carbon
The invention provides a method for preparing a transition metal composite hetero atom doped porous carbon material through dipping, recrystallizing and carbonizing biomasses. The method comprises the following steps: immersing the biomasses in an aqueous solution of metal salt, and carrying out refrigeration vacuum drying on the immersed biomasses to recrystalize the metal salt in apertures of the biomasses in order to obtain a product A; and 2, placing the product A in a tubular furnace, and carrying out high temperature calcining to carbonize the biomasses at a high temperature and realize a metal salt decomposition reaction in order to obtain the transition metal composite hetero atom doped porous carbon material. The non-noble metal modified biomass carbon material is prepared from the biomasses through using the porous structure of the biomasses. Compared with routine high temperature carbonization, dipping recrystallization carbonization can synchronously realize activation and perforation, so the porous carbon prepared in the invention has a large specific surface area and good conductivity, thereby the porous carbon material still has strong energy storage and release ability under a high current density.
Owner:HARBIN ENG UNIV
Hydrated glass-based sodium-ion battery quasi-solid electrolyte and preparation method and application
ActiveCN109004268BReduce free water contentIlliquidSecondary cellsElectrolytesSolid state electrolyteViscous liquid
The invention discloses a quasi-solid state electrolyte of a sodium ion battery based on hydrated glass and a preparation method and application thereof. A quasi-solid state electrolyte for sodium ionbatteries based on hydrated glass is prepared by using Na2O-B2O3-SiO2-The hydrated glass of H2O system is used as matrix, sodium salt as admixture, Na2O: B2O3: SiO2: H2O=8-30: 0.5-3:20-70: 2-60, andthat admixture is 0. 5% by weight of the total mass of the admixture 0-10 wt%. 4qqq1) weighing that required matrix raw material, mixing with sodium salt admixture, uniformly stirring, standing, clarify and aging to form a colorless transparent liquid; 2) after 20-350 DEG C, 12-48 h heat treatment, the water content is adjusted and the elastic solid electrolyte is obtained. 3) Performing perfusion-heat seal of viscous liquid electrolyte and the elastic solid electrolyte is assembled by heat-sealing method, and the elastic solid electrolyte is assembled by solidification and hot-pressing method. The central working region with lower Tg and the edge region with higher Tg are formed by secondary heating. The invention has the advantages of good adaptability and stability, low cost, simple operation, easy control and realization of the process, and environment friendliness.
Owner:ZHEJIANG UNIV
A kind of flame retardant organic electrolytic solution and rechargeable zinc battery for rechargeable zinc battery
ActiveCN110534808BAvoid decompositionUniform depositionFinal product manufactureElectrolytesElectrolytic agentOrganic solvent
The invention provides a flame retardant organic electrolyte for a rechargeable zinc battery and a rechargeable zinc battery, the flame retardant organic electrolyte for a rechargeable zinc battery includes a soluble zinc salt, a sodium salt electrolyte salt and a flame retardant An organic solvent, the concentration of the soluble zinc salt is 0.1-2 mol / L, and the concentration of the sodium salt electrolyte salt is 0.1-2.5 mol / L. The flame retardant organic electrolyte solution of the present invention has suitable conductivity, viscosity, cation migration rate, high voltage window and excellent flame retardancy, can realize uniform deposition of metal zinc, and improve Zn deposition / precipitation coulombic efficiency and atom utilization rate , showing good electrochemical reversibility and compatibility with cathode and anode materials. The flame retardant organic electrolyte is applied to Zn / / Na 3 V 2 (PO 4 ) 2 o 2 In the F rechargeable zinc battery system, the safety of the battery can be significantly improved, and this zinc battery system has a high discharge voltage platform and good cycle stability, and has broad application prospects.
Owner:HEBEI UNIVERSITY
A kind of garnet type composite electrolyte material and its preparation method and application
ActiveCN111276737BImprove lithium ion conductivityRaise the voltage windowFinal product manufactureElectrolytesComposite electrolyteNew energy
The invention discloses a garnet-type composite electrolyte material and a preparation method thereof, belonging to the field of new energy materials. The garnet-type composite electrolyte material is a core with a garnet-type oxide as the core and a coordination hydride as the shell shell structure; the preparation method of the garnet-type composite electrolyte material of the present invention, comprising: under the protection of an inert gas, redox reactions occur between the garnet-type oxide and the coordination hydride under the action of ball milling to obtain the garnet-type composite electrolyte material electrolyte material. The garnet-type composite electrolyte material prepared by the present invention has the advantages of high lithium ion conductivity and high voltage window, can be applied to the preparation of all-solid lithium-ion batteries, and has high application value in the industrial production of all-solid-state lithium-ion batteries .
Owner:ZHEJIANG UNIV
A kind of zinc-cobalt double metal oxide sandwich structure flexible film electrode and preparation method thereof
ActiveCN112185715BRaise the voltage windowImprove stabilityHybrid capacitor electrodesHybrid/EDL manufactureThin film electrodeCarbon nanotube
The invention provides a method for preparing a zinc-cobalt double metal oxide sandwich structure flexible film electrode, based on the vacuum filtration method, (1) dispersing cellulose nanofibrils and multi-walled carbon nanotubes in water, ultrasonic, magnetic Stir to obtain a uniform dispersion of cellulose nanofibrils-multi-walled carbon nanotubes; (2) disperse cellulose nanofibrils and zinc-cobalt double metal oxides in water, ultrasonically and magnetically stir to obtain uniform cellulose Nanofibril-zinc-cobalt double metal oxide dispersion; (3) cellulose nanofibril-multiwall carbon nanotube dispersion and cellulose nanofibril-zinc-cobalt double metal oxide dispersion are successively suction filtered Forming a film to obtain a flexible film electrode with a sandwich structure of coating layer-sandwich layer-coating layer-sandwich layer-coating layer. The invention aims to prepare a high-performance flexible and lightweight electrode material, which has broad application prospects in the fields of portable electronics and energy products.
Owner:GUANGXI UNIV
Lithium battery
InactiveCN111048774ARaise the voltage windowWide working temperature rangeFinal product manufactureCell electrodesChemistryActivated carbon
The invention discloses a lithium battery which comprises a positive electrode, a negative electrode and an electrolyte solution, the active material of the positive electrode is lithium manganate oractive carbon, the active material of the negative electrode is lithium titanate, and the electrolyte comprises a confinement water molecule functional solute, a solvent and an electrolyte, wherein the confinement water molecule functional solute is selected from one or more of monosaccharide or disaccharide and the electrolyte is a soluble salt of alkali metal comprising lithium. The lithium battery has a high voltage window, a wide working temperature interval and high use safety.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Li-ion supercapacitor
The invention provides a Li-ion supercapacitor. The active material of a positive plate of the Li-ion supercapacitor comprises a porous carbon material and LiNixCoyMnzO2; the porous carbon material is at least one of active carbon, an active carbon fiber, porous graphitized carbon black and graphene; the ratio of the porous carbon material to LiNixCoyMnzO2 is (1:1)-(1:4), wherein x+y+z=1, x:y:z=5:2:3 or x:y:z=5:3:2 or x:y:z=6:2:2 or x:y:z=7:1.5:1.5 or x:y:z=8:1:1; the active material of a negative plate is at least one of synthetic graphite, interphase graphite, mesocarbon microbeads, hard carbon and soft carbon; the mass ratio of the LiNixCoyMnzO2 contained in the positive plate to the active material contained in the negative plate is 0.5-1.6; the electrolyte of the Li-ion supercapacitor consists of an electrolyte salt and an organic solvent; the electrolyte salt is selected from LiPF6 or LiBF4 or LiBOB or LiFSI; and the organic solvent is at lest one of ethylene carbonate, carbonic allyl ester, carbonic methyl ester, methyl carbonate, diethyl carbonate and acetonitrile.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Composite electrolyte and preparation method thereof, electrolyte film and battery
PendingCN119419349AImprove electrochemical stabilityimprove securitySolid electrolytesSecondary cells servicing/maintenanceComposite electrolyteElectrical battery
The invention discloses a composite electrolyte and a preparation method thereof, an electrolyte film and a battery, and relates to the technical field of new energy batteries. The composite electrolyte comprises a metal organic framework material, a self-repairing polymer material and a lithium salt, wherein the self-repairing polymer material contains a dynamic Lewis acid bond. According to the composite electrolyte provided by the invention, the self-repairing polymer material contains a dynamic Lewis acid bond, the Lewis acid bond easily interacts with Lewis basic anions in the lithium salt so as to dissociate the lithium salt, and the self-repairing polymer material can release more active lithium ions by splitting the lithium salt, so that the concentration of the active ions in the composite electrolyte is improved, and the service life of the composite electrolyte is prolonged. Therefore, the ionic conductivity is improved; the self-repairing polymer material has a flexible chain segment, after the self-repairing polymer material is compounded with the metal organic framework material, the mechanical flexibility of the composite electrolyte can be improved, the expansion of an electrode in the working process of the battery can be inhibited through a dynamic repairing function, a voltage window is improved, and the electrochemical stability and the safety performance of the battery are further improved.
Owner:SHANGHAI TAIRUI LITHIUM BATTERY TECHNOLOGY CO LTD
A phosphate-based high-voltage flame-retardant electrolyte
ActiveCN112786968BRaise the voltage windowImprove compatibilityLi-accumulatorsOrganic electrolytesPhosphoric Acid EstersElectrolytic agent
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
A kind of electrolyte and its application in electrochemical energy storage device
ActiveCN110911178BRaise the voltage windowWide working temperature rangeHybrid capacitor electrolytesElectrolytic agentOrganic solvent
The invention discloses an electrolytic solution, which comprises a solvent and an electrolyte; wherein, the solvent is a mixture of an organic solvent and water, wherein the mass ratio of the organic solvent to water is 1 / 10-1 / 1; The electrolyte is a soluble salt of alkali metal and / or zinc. The electrolyte has good high-voltage and low-temperature resistance, has a high-voltage window and a wide operating temperature range, and can be preferably used in supercapacitors or hybrid capacitors. The invention also discloses the application of the electrolyte.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
LLZTO/SPE composite electrolyte based on lithium lanthanum zirconium oxide and preparation method of LLZTO/SPE composite electrolyte
PendingCN114843595AImprove rigidityImprove machinabilityFinal product manufactureElectrolyte accumulators manufactureComposite electrolytePolyethylene glycol
The invention relates to an LLZTO / SPE composite electrolyte based on lithium lanthanum zirconium oxide and a preparation method of the LLZTO / SPE composite electrolyte, and the preparation method comprises the following steps: mixing a porous thin-layer LLZTO solid electrolyte prepared by adopting a tape casting process with glycidyl ether oxypropyl cyclotetrasiloxane, polyethylene glycol diglycidyl ether, an initiator and a lithium salt, and heating and curing to obtain the LLZTO / SPE composite electrolyte. Compared with the prior art, the composite electrolyte has the advantages that the lithium ion transmission performance of an inorganic electrolyte LLZTO ceramic framework is good, the machinability of the composite electrolyte is good, the voltage window is wide and the like, the contact resistance of organic and inorganic electrolytes can be effectively improved, and the development of an all-solid-state battery is facilitated.
Owner:TONGJI UNIV