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42results about How to "Excellent lithium ion conductivity" patented technology
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Lithium ion solid electrolyte and preparation method and application thereof
ActiveCN107425218AExcellent lithium ion conductivityHigh thermodynamic stabilityCell electrodesSecondary cellsHalogenPhysical chemistry
The invention relates to a lithium ion solid electrolyte and a preparation method application thereof, and belongs to the technical field of a lithium ion battery. The lithium ion solid electrolyte has the chemical formula shown as follows: Li<3+a>MA<m>B<n>Y<1-b>, wherein a is more than or equal to -0.25 but less than or equal to 0.25, b is more than or equal to 0 but less than or equal to 0.5, m is more than or equal to 0 but less than or equal to 1.25, n is more than or equal to 0 but less than or equal to 1.25, M is one of Ca, Ba, Mg, Al and Ti, A and B are separately selected from one of O, S, Se, Te, N, P, Si, C, Sb, Bi, F, Cl, Br and I, and Y is one of halogen, minus monovalent ionic group or vacancy. The lithium ion solid electrolyte has a stable structure and favorable lithium ion transmission performance and has favorable electrochemical performance and safety performance when used as a solid electrolyte of the lithium ion battery.
Owner:ZHENGZHOU NEW CENTURY MATERIALS GENOME INST CO LTD
Method for preparing lithium iron phosphate as lithium ion cell positive-pole material
ActiveCN101070148AImprove interface performanceExcellent lithium ion conductivityElectrode manufacturing processesPhosphorus compoundsLithium iron phosphatePhosphate
It is a kind of preparation method of lithium iron phosphate which is an anode material of lithium ion battery, it adopts two-step technics: firstly, mix the following material such as iron, lithium and phosphate evenly and compound lithium iron phosphate of better crystal degree at lower temperature; then mix up lithium iron phosphate and composite conductive agent (inorganic conductive matter and precursor which is a carbon-contained conductive agent) sufficiently, it can get anode material of lithium ion battery which has a good electrochemistry capability through heat processing for short time at higher temperature, and the material has a good crystal performance and a strong interface function with conductive agent which makes material's conductivity of lithium ion and electron high, and it is suitable for charge / discharge of large rate. This technique's material is cheap chemical product, the composed techniques is simple, it is easy for large-scale production, the method to add conductive agent of electron is unique, electrochemistry capability of the products is of good performance.
Owner:WUXI KAITIANXING PHOTOELECTRIC MATERIAL
High-nickel material coated with aluminum and lithium silicate on surface and doped with fluorine on surface layer and preparation method
ActiveCN108807931AImprove electronic conductivityReduce residual alkaliCell electrodesElectrical conductorOxygen
The invention discloses a high-nickel material coated with aluminum and lithium silicate on the surface and doped with fluorine on a surface layer. The high-nickel material comprises an aluminum and lithium silicate coating layer and a high-nickel ternary material central layer, wherein the thickness of the coating layer is 1-200 nm, and the coating layer is doped with a fluorine element. In addition, the invention discloses a preparation method of the high-nickel material. The preparation method comprises the steps of mixing, drying and screening, lithium-adding sintering and fluorine-addingthermal treatment. The aluminum and lithium silicate fast-ion conductor material coating layer has good lithium-ion conducting performance, doped fluorine ions replace oxygen in the coating layer or the high-nickel material, accordingly the electronic conductivity of the material is improved, finally the surface of the high-nickel material has better lithium-ion and electronic conductivity properties, and playing of the rate capability of an anode material for lithium ion batteries is facilitated. The preparation method of the high-nickel material is low in cost, the process is simple, and industrialization is easy to achieve.
Owner:余姚市海泰贸易有限公司
Positive electrode sheet and lithium ion secondary battery with same
ActiveCN108539122APlay a covering roleReduce concentrationCell electrodesSecondary cellsLithiumPhosphorous acid
The invention belongs to the technical field of lithium secondary batteries and discloses a positive electrode sheet preparation method and a lithium ion secondary battery with a positive electrode sheet. Prepared positive electrode sheet paste contains an additive in a molecular formula (1), and the additive can be phosphorous acid or phosphite ester. By adding of the appropriate quantity of phosphorous acid and / or phosphite ester into the positive electrode sheet paste, the problem of powder shedding of the positive electrode sheet can be improved, adhesiveness between a positive electrode sheet coating and an aluminum foil is improved, a positive electrode material particle coating effect is achieved, and accordingly battery gas-producing expansion is remarkably inhibited while batterycycle stability is improved.
Owner:HENGDIAN GRP DMEGC MAGNETICS CO LTD
Lithium positive electrode surface protective coating and method for preparing same
ActiveCN108376783AEasy to operateReduce processing costsCell electrodesFinal product manufactureSolid state electrolyteNanoparticle
The invention discloses a lithium positive electrode surface protective coating and a method for preparing the same. The lithium positive electrode surface protective coating is characterized in thata protective coating mainly comprises nanometer particles which are stacked, and stacked pores of the nanometer particles are filled with solid electrolytes; the protective coating is arranged betweena lithium positive electrode and a diaphragm. The lithium positive electrode surface protective coating and the method have the advantages that the nanometer particles are stacked to form the protective coating, growth of lithium dendrites on lithium metal pole plates can be effectively inhibited by stacked structures formed by the nanometer particles by means of stacking, and accordingly the problem of diaphragm piercing due to growth of existing lithium dendrites can be solved; the solid electrolytes in the stacked pores of the nanometer particles are high in lithium ionic conductivity, accordingly, the transmission rate of the lithium metal pole plates can be guaranteed, side reaction between lithium metal and electrolyte solution can be effectively isolated, the recycling service lives of the lithium metal pole plates can be greatly prolonged, and the safety of the lithium metal pole plates can be improved.
Owner:四川华昆能源有限责任公司
High-energy density type lithium cobaltate cathode material and preparation method thereof
ActiveCN107742725AEvenly distributedHigh voltage platformCell electrodesSecondary cells servicing/maintenanceCyclic processHigh energy
The invention is applicable to the technical field of lithium batteries, and provides a high-energy density type lithium cobaltate cathode material and a preparation method thereof. According to the high-energy density type lithium cobaltate cathode material and the preparation method thereof, doped type primary lithium cobaltate particles are generated by performing solid phase reaction on a cobalt source which is pre-doped with Ni element, an additive and a lithium source, and then the surfaces of the doped type primary lithium cobaltate particles are coated with a doped N element-containingLiVPO4F material which is stable under high voltage, wherein the cobalt source is pre-doped with Ni, so that the Ni element can be distributed more uniformly in a substrate, and a material structureis more stable in a charging-discharging cyclic process; meanwhile, the substrate is added with an M element, so that the effect of stabilizing the material structure is further achieved. The LiVPO4Fmaterial has the advantages of stable structure, high voltage platform and the like; the lithium ion conductivity of the LiVPO4F material can be further improved through doping. The lithium cobaltatecathode material provided by the invention can be normally used under the max charge voltage of 4.50 V, and has excellent cycle performance and safety performance.
Owner:GEM JIANGSU COBALT IND CO LTD
Lithium ion battery composite anode material and preparation method thereof
ActiveCN104752713AStable structureReduce reactivitySecondary cellsPositive electrodesBattery chargePhysical chemistry
The invention discloses a lithium ion battery composite anode material and a preparation method thereof, and in particular relates to a lithium ion battery anode material with a cladding layer and a surface layer and a preparation method thereof. The cladding layer of the composite material is an oxide at least containing Li, Ni, and Mn, and the surface layer is an oxide at least containing Li and rare earth element R. When circulating under the circumstances of total battery charging to 4.4V, the lithium ion battery composite anode material has the characteristics of stable structure, low reaction activity with electrolyte solution and high lithium ion conductivity, etc., so that under high voltage the total battery has the advantages of good cyclic stability, rate capability and high (low) temperature performance, etc.
Owner:BEIJING EASPRING MATERIAL TECH CO LTD
Organic-inorganic composite coating film on surface of metal lithium negative electrode, and preparation method
The invention provides an organic-inorganic composite coating film on the surface of a metal lithium negative electrode. The film comprises a siloxane organic phase formed by condensation of LiSixOy inorganic particles and silane; and the film uniformly coats the surface of metal lithium, and has the characteristics of relatively high ionic conductivity, high young modulus, small interface resistance, improved long-term working stability of the metal lithium, and the like. Meanwhile, the invention also provides a preparation method of the organic-inorganic composite coating film on the surface of the metal lithium negative electrode. The silane which is distributed on the surface of the metal lithium is subjected to adaptive phase splitting along with a first-time deposition process of the lithium to form an organic-inorganic composite double-phase structure, and the metal lithium is guided to be uniformly deposited and stripped in a charging process, so that the growth of lithium dendrites is inhibited. The cycle lives of the metal lithium negative electrode and a battery system are remarkably prolonged, and the safety of the metal lithium negative electrode and the battery system during use is guaranteed.
Owner:UNIV OF SCI & TECH BEIJING
Positive electrode active material and non-aqueous electrolyte secondary battery containing the same
ActiveCN1571194AExcellent lithium ion conductivityGood high temperature characteristicsNon-aqueous electrolyte accumulatorsFixed capacitor electrodesTitaniumNon aqueous electrolytes
Owner:MURATA MFG CO LTD
Electrode plate and preparation method and application thereof
InactiveCN112151764AIncrease volumetric energy densityInfiltration helpsNon-aqueous electrolyte accumulator electrodesSecondary cells servicing/maintenanceSolid state electrolyteOrganosolv
The invention discloses an electrode plate as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing an electrode material plate: stirring an electrode material, a conductive agent, an adhesive, a dispersing agent and a pore-forming agent to obtain slurry, coating the surface of a current collector with the slurry, and conducting drying to obtain the electrode material plate; preparing an electrolyte solution: performing mechanical ball milling on the solid electrolyte to obtain electrolyte powder, and dissolving the electrolyte powder in an organic solvent to obtain the electrolyte solution; preparing the electrode plate:soaking the electrode material plate in the electrolyte solution, then conducting heating, drying and tabletting under the vacuum condition to obtain the electrode plate. The electrode plate of the solid-state lithium ion battery is prepared through the preparation method. The prepared electrode plate is applied to any one of a traditional liquid lithium battery, a polymer lithium battery, a mixed solid-liquid electrolyte lithium storage battery and a solid-state battery. The preparation method has theadvantages that the preparation process is low in cost, large-scale production is easy, and the prepared electrode plate has excellent electrochemical performance.
Owner:ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD
Surface coating modification method of LiNi0.5Mn1.5O4 cathode material
ActiveCN106025254AInhibit erosionImprove cycle stabilityCell electrodesSecondary cellsAir atmosphereCorrosion
The invention discloses a surface coating modification method of a LiNi0.5Mn1.5O4 cathode material. The method comprises steps as follows: firstly, lithium-titanium dioxide-coated LiNi0.5Mn1.5O4 is prepared, then ammonium dihydrogen phosphate is added, and lithium-titanium dioxide-ammonium dihydrogen phosphate composite-coated LiNi0.5Mn1.5O4 is obtained through a reaction; finally, LiNi0.5Mn1.5O4 is heated to 650-750 DEG C in an air atmosphere, then cooled to 400-600 DEG C for secondary heat treatment and cooled to the room temperature, and then a cathode material product is obtained. According to the method, the surface of the electrode material is coated with a fast ion conductor, namely, LiTi2(PO4)3, an artificial solid electrolyte layer is formed, corrosion caused by an electrolyte to the electrode material is effectively inhibited, the cycling stability of the material is improved, besides, the fast ion conductor has the good lithium ionic conductivity, and the cycling performance of the electrode material under the conditions of high-rate charging and discharging is improved.
Owner:CHANGSHU INSTITUTE OF TECHNOLOGY
Phenyl organic acid compound modified graphite negative electrode material and preparation method thereof
ActiveCN111490238AExcellent lithium ion conductivityLower impedanceSecondary cellsNegative electrodesElectrical batteryCarboxylic acid
The invention belongs to the technical field of battery negative electrode materials, and provides a phenyl organic acid compound modified graphite negative electrode material, the negative electrodematerial comprises a phenyl organic acid compound and graphite, and the weight ratio of the phenyl organic acid compound to the graphite is 1-6: 100; according to the structural general formula of thephenyl organic acid compound, RA1 is a hydrocarbyl organic acid group containing a carbon-carbon single bond, a carbon-carbon double bond or a carbon-carbon triple bond, and the organic acid group isone or two of sulfonic acid, phosphonic acid, boric acid and carboxylic acid. The invention also provides a preparation method of the negative electrode material. According to the preparation method,the first coulombic efficiency of the graphite negative electrode is remarkably improved, the lithium consumption caused by rupture and reforming of a SEI membrane in the long-term cycle process of the battery is greatly reduced, and the long-term cycle stability and the high-temperature cycle stability of the battery are remarkably improved.
Owner:苏州华赢新能源材料科技有限公司
Lithium molybdate surface modified lithium ion battery nickel-rich positive pole material and preparation method thereof
InactiveCN105591099AFacilitate de-intercalationReduce absorptionCell electrodesSecondary cellsLithium-ion batterySurface modification
The invention discloses a lithium molybdate surface modified lithium ion battery nickel-rich positive pole material and a preparation method thereof. The chemical formula of the lithium ion battery nickel-rich material is LiNiaCobM1-a-bO2, wherein a and b are the mole number, a is larger than or equal to 0.5 and is smaller than or equal to 1, b is larger than or equal to 0 and is smaller than or equal to 0.2, M is one or more of Mn, Al and Fe, Li2MoOx is surface modified layer material lithium molybdate, and x is larger than or equal to 3 and is smaller than or equal to 4. The lithium molybdate surface modified lithium ion battery nickel-rich positive pole material is prepared through simple liquid phase precursor preparation, surface modification and high-temperature solid phase sintering reaction. The lithium molybdate surface modification layer has the good lithium ionic conductivity, and is beneficial to lithium ion de-intercalation. By means of the lithium molybdate surface modified lithium ion battery nickel-rich positive pole material, the rate capability, cycle performance and safety of the nickel-rich positive pole material can be greatly improved; according to the preparation method, raw materials are easy to obtain, operation is easy, the cost is low, and industrial large-scale production is easy to achieve.
Owner:SOUTH CHINA UNIV OF TECH
Gel polymer electrolyte composition, and gel polymer electrolyte
ActiveCN108140885AUniform shapeExcellent lithium ion conductivitySolid electrolytesLi-accumulatorsLithiumPolymer electrolytes
The present invention relates to a gel polymer electrolyte composition, and a gel polymer electrolyte produced therefrom. Specifically, provided is a gel polymer electrolyte composition comprising: lithium salt; an organic solvent; polymer A expressed by the chemical formula 1 and comprising an epoxy group; and polymer B expressed by the chemical formula 2 and comprising amine and cyanide groups,wherein polymers A and B are contained at 1-20 wt% with respect to the total weight of the gel polymer electrolyte composition, and thus a gel polymer electrolyte for a secondary battery can be produced comprising a polymer network which is formed by three-dimensional bonding of polymer A, expressed by the chemical formula 1 and comprising an epoxy group, and polymer B, expressed by the chemical formula 2 and comprising amine and cyanide groups.
Owner:LG ENERGY SOLUTION LTD
Solid Electrolyte, Lithium Battery, Battery Pack, And Vehicle
ActiveCN107845830AImprove conductivityExcellent discharge rate performanceSolid electrolytesBatteries circuit arrangementsRoom temperatureEngineering
Embodiments relate to a solid electrolyte, a lithium battery, a battery pack, and a vehicle. The present invention relates to a solid electrolyte having a chemical stability of constituent elements and being capable of being reduced in cost and having high lithium ion conductivity at a temperature lower than room temperature and a lithium battery containing this solid electrolyte and excellent discharge rate at a low temperature, a battery pack containing the lighium battery, and a vehicle carrying the battery pack. According to one embodiment, there is provided a solid electrolyte including an oxide represented by General Formula Li1+2xM12-x(Ca1-yM2y)x(PO4)3. In the General Formula above, M1 is at least one selected from the group consisting of Zr and Hf. M2 is at least one selected fromthe group consisting of Sr and Ba. x satisfies 0<x<2. y satisfies 0<y<=1.
Owner:KK TOSHIBA
Si@C composite anode material and preparation method thereof
ActiveCN108134051ASolve conductivity problemsGood magnificationCell electrodesSecondary cellsCarbon layerMixed materials
The invention discloses a Si@C composite anode material and a preparation method thereof and particularly relates to the field of anode materials of lithium ion batteries. The Si@C composite anode material is characterized by consisting of a core, a middle layer and an outer layer and adopting a core-shell structure; the core is a porous spherical Si@C material, the middle layer is a lithium metaaluminate mixed material, and the outer layer is a carbon layer; the lithium metaaluminate mixed material is formed by mixing lithium metaaluminate, graphene, a binder and a solvent; the binder is polyvinylidene fluoride and the solvent is N-methylpyrrolidone. The Si@C composite anode material solves the problems of high expansion rate, poor electrical conductivity and the like of existing Si@C composite anode materials and has the advantages of high gram volume, good cycle performance and excellent rate performance.
Owner:内蒙古欣源石墨烯科技股份有限公司
Lithium-rich ternary composite material and preparation method thereof
InactiveCN106711428AImprove first-time efficiencyImprove gram capacityCell electrodesSecondary cellsHigh rateLithium electrode
The invention belongs to the field of lithium ion battery material preparation, and particularly relates to a lithium-rich ternary composite material and a preparation method thereof. The preparation method comprises the steps of firstly preparing lithium powder externally coated with a polymer, then adding the lithium powder into a ternary material, uniformly mixing the lithium powder and the ternary material, soaking in a lithium metaaluminate solution, and drying to prepare the ternary composite material with a core-shell structure. The prepared material utilizes the lithium powder coated with the ternary material for providing sufficient lithium ions during a charge-discharge process, so that the first-time efficiency and the rate capability thereof are improved; meanwhile, the lithium-ion transmission rate under the high-rate condition is improved by depending on the lithium ions in the lithium metaaluminate solution on the outermost layer; meanwhile, an outer shell layer has better compatibility with an electrolyte solution, so that the cycle performance is improved.
Owner:江苏元景锂粉工业有限公司
Battery electrolyte, preparation method thereof, and silicon negative electrode battery contain same
InactiveCN109273765AImprove lithium ion conductivityImproved cycle performance and rate performanceSecondary cellsOrganic electrolytesChemistryOxide
The invention discloses a battery electrolyte, a preparation method and a silicon negative electrode battery containing the electrolyte, wherein the electrolyte comprises a lithium salt, an organic solvent and a functional additive, wherein the functional additive is vinyl fluorocarbonate and 4-Methyl chloride-1, 3, 2-Dioxathiolane-2-Oxide. The invention adds functional additives vinyl fluorocarbonate and 4-Methyl chloride-1, 3, 2-Dioxathiolane-2-Oxides can form thinner and more stable solid electrolyte phase interface on the surface of silicon anode through electrochemical process or chemicalprocess. The combination of the two additives can improve the lithium ion conductivity of SEI film and improve the cycle performance and rate performance of the battery, especially the low temperature performance of the battery.
Owner:HEFEI GUOXUAN HIGH TECH POWER ENERGY
Crystalline Li3OCl inorganic lithium ion conductor as well as preparation method and application thereof
ActiveCN111484042APromote dehydrogenation reactionIncrease lattice defectsSecondary cellsLithium halidesLithium oxideLithium chloride
The invention discloses a crystalline Li3OCl inorganic lithium ion conductor as well as a preparation method and an application thereof. The Li3OCl inorganic lithium ion conductor is Zn-doped Li3OCl,and the preparation method comprises the following steps: uniformly mixing lithium hydroxide, lithium oxide and lithium chloride in proportion, and melting above the eutectic point of lithium hydroxide, lithium oxide and lithium chloride to obtain a precursor; and mixing the precursor with metal zinc powder, and carrying out heat treatment at a temperature higher than the melting temperature of the precursor in a protective atmosphere to obtain the product Zn-doped Li3OCl. The Li3OCl inorganic lithium ion conductor provided by the invention has excellent lithium ion conductivity and environmental stability. The preparation method provided by the invention is short in preparation period, low in cost, high in process controllability and suitable for industrial application.
Owner:CHANGSHA STORM ENERGY TTECH
Porous ceramic material, solid electrolyte material as well as preparation method and lithium ion battery thereof
ActiveCN110395980AImprove conductivityImprove stabilitySecondary cellsCeramicwareElectrical conductorCombustion
The invention provides a porous ceramic material, a solid electrolyte material as well as a preparation method and a lithium ion battery thereof. The solid electrolyte material is prepared by fillingpores in an oxide solid electrolyte ceramic layer with a solid organic lithium ion conductor, is free of liquid electrolyte or organic diaphragm, has the advantages of both of pure oxide solid electrolyte and organic polymer electrolyte, has very good lithium ion conductivity, has normal-temperature conductivity of 5-8*10<-2>S.cm<-1>, is free of liquid substance inside and is free of corrosiveness, deformation or expansion, and the composite solid electrolyte has no risk of combustion, firing, explosion or leakage.
Owner:深圳市富济新材料科技有限公司
All-solid-state battery and preparation method thereof
ActiveCN105470566AIncrease powerImprove electrochemical performanceFinal product manufactureElectrolyte accumulators manufactureSolid state electrolyteImide
The invention discloses an all-solid-state battery and a preparation method thereof. The all-solid-state battery comprises a positive plate, a Li<x>C<y>PO<4-z>N<z> solid electrolyte and a negative electrode, wherein the positive plate is prepared by coating, rolling and drying a positive electrode powder material, acetylene black, graphite, imide and solid electrolyte powder, the chemical formula of the Li<x>C<y>PO<4-z>N<z> solid electrolyte is Li<x>C<y>PO<4-z>N<z>, x is more than 3, y is more than 0 and less than 1, z is more than 0 and less than 1, and the negative electrode is metal lithium. The all-solid-state battery disclosed by the invention has favorable electrochemical performance and relatively high power, and can be taken as a lithium ion battery with high safety performance. The battery has high charging and discharging performance.
Owner:复阳固态储能科技(溧阳)有限公司
Electrolyte for rechargeable lithium battery and rechargeable lithium battery comprising same
InactiveCN1567643AImprove thermal stabilityExcellent lithium ion conductivitySecondary cellsCell component detailsPhysical chemistrySilicone oil
Disclosed is a non-aqueous electrolyte for a rechargeable lithium battery including a polyether-modified silicon oil in which a polyether chain is bonded to a terminal end of a linear polysiloxane, a cyclic carbonate, and a lithium salt.
Owner:SAMSUNG SDI CO LTD
Solid-state ion conductor and lithium-enrich manganese-based material composite electrode and lithium ion battery
InactiveCN109638233AExcellent lithium ion conductivityExcellent rate performanceElectrode carriers/collectorsSecondary cellsElectrical conductorAluminium-ion battery
The invention provides a solid-state ion conductor and lithium-enrich manganese-based material composite electrode. The solid-state ion conductor and lithium-enrich manganese-based material compositeelectrode comprises a lithium-enrich manganese-based material and a solid-state ion conductor, and the chemical formula of the lithium-enrich manganese-based material is xLi2MnO3.(1-x)LiMO2, wherein xis greater than 0 and less than 1, and M is one or more of Mn, Ni and Co; and the chemical formula of the solid-state ion conductor is Li<1+a>[AB<2-c>(DO4)3] or Li<2+alpha>E<beta>G<3+gamma>. The invention further provides a lithium ion battery comprising the composite electrode. The solid-state ion conductor has excellent ionic conductivity and is composited in the lithium-enrich manganese-based electrode, and the lithium ion transmission rate of the electrode can be increased. In the battery charging and discharging processes, the solid-state ion conductor participates in the forming process of a solid electrolyte membrane on the surface of the lithium-enrich manganese-based material, the membrane impedance of the lithium-enrich manganese-based positive electrode is lowered, and thusthe rate performance and cycling stability of the lithium-enrich manganese-based electrode are improved.
Owner:CHINA AUTOMOTIVE BATTERY RES INST CO LTD
Non-aqueous electrolyte considering high-temperature characteristic and normal-temperature cycle, application thereof and lithium ion battery
InactiveCN112531213AExcellent lithium ion conductivityLow viscositySecondary cellsOrganic electrolytesElectrolytic agentOrganosolv
The invention relates to a non-aqueous electrolyte considering high-temperature characteristics and normal-temperature circulation, an application thereof and a lithium ion battery. Based on the totalweight, the non-aqueous electrolyte comprises the following components in percentage by mass: 70-90% of a non-aqueous organic solvent, 5-20% of electrolyte lithium salt and an additive, based on thetotal weight of the non-aqueous electrolyte, the additive comprises 0.1-2.5% of lithium difluorophosphate, 0.1-2.5% of propane sultone, 0.5-3% of lithium bis (fluorosulfonyl) imide, 0.1-1% of tetravinyl silane and 0.1-1.5% of lithium difluorobis (oxalato) phosphate. The non-aqueous electrolyte disclosed by the invention is good in stability under high voltage, relatively good in circularity, relatively small in gas production rate in the aspect of high-temperature storage and relatively small in DCR growth, and can improve the electrochemical characteristics of the lithium ion battery under high temperature and high pressure.
Owner:ENVISION DYNAMICS TECH (JIANGSU) CO LTD +1
Positive electrode of lithium ion secondary battery, and method of manufacturing lithium ion secondary battery
ActiveCN106068573AReduced Diffusion ResistanceExcellent cycle characteristicsElectrode manufacturing processesFinal product manufactureElectrical batteryPhysical chemistry
Owner:TOYOTA JIDOSHA KK
A kind of high-nickel material whose surface is coated with lithium aluminum silicate and whose surface is doped with fluorine, and its preparation method
ActiveCN108807931BImprove electronic conductivityReduce residual alkaliCell electrodesAluminum silicateConductive materials
The invention discloses a high-nickel material whose surface is coated with lithium aluminum silicate and whose surface layer is doped with fluorine. It comprises a lithium aluminum silicate coating layer and a central layer of a high-nickel ternary material. mixed with fluorine. At the same time, a preparation method of a high-nickel material is disclosed, including mixing, drying and sieving, adding lithium to sinter, and adding fluorine to heat treatment. The cladding layer of the lithium aluminum silicate fast ion conductor material of the present invention has good lithium ion conductivity, and the oxygen in the cladding layer or high-nickel material is replaced by fluoride ion doping, thereby improving the electronic conductivity of the material, and finally making the high The surface of the nickel material has good lithium ion and electron conductivity at the same time, which is beneficial to the performance of the rate performance of the positive electrode material of the lithium ion battery. The preparation method of the present invention is low in cost, simple in process, and easy to realize industrialization.
Owner:余姚市海泰贸易有限公司
Positive electrode active material and preparation method thereof, positive electrode and lithium ion secondary battery
ActiveCN114512643AImprove electrochemical performanceImprove efficiencySecondary cellsPositive electrodesElectrical batteryManganate
The invention discloses a positive electrode active material which comprises a lithium nickel manganese oxide modified material and a coating layer on the surface of the lithium nickel manganese oxide modified material, and the coating layer comprises an organic compound with-N or-COO bonds; the lithium nickel manganese oxide modified material comprises primary particles of a spinel phase and a rock-salt-like phase, the spinel phase is an inner core, and the rock-salt-like phase forms a shell; the spinel phase is of a nickel lithium manganate spinel structure; the rock-salt-like phase is formed by induction of a nickel lithium manganate spinel structure, the rock-salt-like phase contains at least one placeholder element of Mg, Zn, Ni, Mn, Fe, Co, Ti, Cr, Y, Sc, Ru, Cu, Mo, Ge, W, Zr, Ca, Ta, Sr, Al, Nb, B, Si, F and S, and the placeholder element is located at the 16c or 8a position of the spinel phase; the rock-salt-like phase is doped with phosphorus elements, and the phosphorus elements are distributed in a gradient mode from the outer surface of the rock-salt-like phase to the interior of the rock-salt-like phase. The invention also discloses a preparation method of the positive electrode active material, a positive electrode of a lithium ion secondary battery containing the positive electrode active material, and the lithium ion secondary battery.
Owner:SONGSHAN LAKE MATERIALS LAB +1
a crystalline state 3 ocl inorganic lithium ion conductor and its preparation method and application
ActiveCN111484042BPromote dehydrogenation reactionIncrease lattice defectsSecondary cellsLithium halidesLithium oxideLithium chloride
The invention discloses a crystalline Li 3 OCl inorganic lithium ion conductor and its preparation method and application; The Li 3 OCl inorganic Li-ion conductor is Zn-doped Li 3 OCl, the preparation method is as follows: mix lithium hydroxide, lithium oxide and lithium chloride in proportion, and melt them above the eutectic point of the three to obtain a precursor; Zn-doped Li 3 OCl. Li provided by the present invention 3 OCl inorganic lithium ion conductor has excellent lithium ion conductivity and environmental stability. The preparation method provided by the invention has short preparation period, low cost and high process controllability, and is suitable for industrial application.
Owner:CHANGSHA STORM ENERGY TTECH
Organic-inorganic composite coating film on the surface of metal lithium negative electrode and preparation method thereof
Owner:UNIV OF SCI & TECH BEIJING
Composition for gel polymer electrolyte and gel polymer electrolyte
ActiveCN108140885BUniform shapeExcellent lithium ion conductivitySolid electrolytesLi-accumulatorsPolymer electrolytesPolymer science
Owner:LG ENERGY SOLUTION LTD
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