Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
95results about How to "Improve normal temperature cycle performance" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Lithium manganese oxide material and preparation method thereof
InactiveCN102054985AEasy to prepareNormal temperature is goodCell electrodesHigh temperature storagePhysical chemistry
The invention discloses a lithium manganese oxide material and a preparation method thereof, in particular to a high-crystallinity lithium manganese oxide material and a preparation method thereof, wherein the high-crystallinity lithium manganese oxide material is used for coating a lithium ion battery. The lithium manganese oxide material is obtained by being coated on a lithium manganese oxide precursor with the one-time crystal particle of 0.01-20mum and has the general formula of LiaMn2-b-cMbGcO4-d-eXdZe, wherein M and X are doped elements, G and Z are coating elements of which the concentration is distributed in a decreasing gradient from outside to inside, a is not less than 0.9 and is not more than 1.2, b is not less than 0 and is not more than 0.2, c is more than 0 and is not more than 0.2, d is not less than 0 and is not more than 0.2, and e is not less than 0 and is not more than 0.2. The material serves as the positive pole material of the lithium ion battery, has better normal-temperature and high-temperature cycle performance and excellent high-temperature storage performance, is simple in preparation and easy to operate, control and carry out industrial production.
Owner:BEIJING EASPRING MATERIAL TECH CO LTD
Lithium ion power battery non-water electrolyte
InactiveCN106025359AImprove normal temperature cycle performanceEasy to useSecondary cellsHigh temperature storageLithium
The invention discloses a lithium ion power battery non-water electrolyte. The lithium ion power battery non-water electrolyte is prepared from, by weight, 100 parts of solvents, common lithium salts, 0.2-10 parts of anode film formation additives, 0.2-10 parts of circulation improvement additives and 0.01-0.5 part of acid and water removal additives. The solvents are cyclic carbonic ester and / or chain carbonic ester, and the molar concentration of the common salts in the solvents is 0.8-1.5 mol / L. Due to the combination use of the anode film formation additives, the circulation improvement additives and the acid and water removal additives, during first formation, a CEI film can be formed on the surface of an anode, the stability of a cathode SEI film can be improved, and the normal temperature circulation performance, the high-temperature 45 DEG C circulation performance and the high-temperature storage performance of a power battery can be remarkably improved.
Owner:ZHUHAI SMOOTHWAY ELECTRONICS MATERIALS
Lithium ion battery with nickel-based cathode, and electrolyte therefor
ActiveCN103208653AGood high temperature performanceGood low temperatureSecondary cellsElectrolytic agentOrganic solvent
The invention belongs to the technical field of lithium ion batteries and particularly relates to electrolyte for a lithium ion battery with a nickel-based cathode. The electrolyte comprises non-aqueous organic solvent, lithium salt, boron-containing lithium salt additive, cyclic ether compound and cyclic phosphonitrile compound. The cyclic phosphonitrile compound is hexaphenoxycyclotriphosphazene or cyclic phosphonitrile derivative. Compared with the prior art, the electrolyte is provided with the boron-containing lithium salt additive capable of improving high temperature performance of the lithium ion secondary battery with nickel-based cathode material, the cyclic phosphonitrile compound, and the cyclic ether compound, and the addition of the cyclic phosphonitrile compound and the cyclic ether compound enables the battery to be fine in high temperature performance, low temperature performance and cycle performance. In addition, the invention discloses the lithium ion battery comprising the electrolyte.
Owner:DONGGUAN AMPEREX TECH
Low temperature type lithium ion battery electrolyte with high temperature property and lithium ion battery
InactiveCN101867064AEasy to manufactureEasy to operateSecondary cellsCell component detailsOxalateOrganic solvent
The invention discloses a low temperature type lithium ion battery electrolyte with high temperature property and lithium ion battery. The electrolyte is made by uniformly mixing and confecting electrolytic salt, non-water organic solvent, alkali additive and film-forming additive, the electrolytic salt is mixed lithium salt made by uniformly mixing lithium tetrafluoroborate and lithium bis(oxalate)borate, and the mol ratio of the two is 96-73: 4-27, the concentration of the mixed lithium salt solution formed by the electrolytic salt and the non-water organic solvent is 0.8-1.2mol / L; the alkali additive is heptamethyldisilazane and the mass ratio of the hepatmethyldisilazane and the non-water organic solvent is 0.1-8%; the mass ratio of the film-forming additive and the non-water organic solvent is 0.1-5%; and the lithium ion battery comprises an anode, a cathode, a diaphragm and low temperature type lithium ion battery electrolyte with high temperature property. The invention has reasonable design, simple preparation method steps and convenient implementation, and the prepared electrolyte and lithium ion battery have favourable comprehensive performances.
Owner:XIAN SAFTY ENERGY TECH
Isolating membrane and lithium ion secondary battery
ActiveCN103956448AIncrease liquid absorptionImprove ionic conductivityCell seperators/membranes/diaphragms/spacersLi-accumulatorsLithiumHigh absorption
The invention provides an isolating membrane and a lithium ion secondary battery. The isolating membrane comprises a microporous membrane with micropores and a coating arranged on the surface of the microporous membrane, wherein the coating comprises polymer particles and binder particles, the polymer particles are of empty shell structures, each empty shell structure comprises a shell and a cavity formed inside the shell, nanopores communicated with the cavity are distributed on the outer surface of the shell, and the diameters of the polymer particles are more than the bore diameter of the micropore of the microporous membrane; the diameters of the binder particles are more than the bore diameter of the micropore of the microporous membrane; the lithium ion secondary battery comprises a positive electrode piece, a negative electrode piece, the isolating membrane interlaid between the positive electrode piece and the negative electrode piece, and electrolyte. The isolating membrane has high absorption amount, high ionic electrical conductivity and low heat shrinkage, and the lithium ion secondary battery has good-normal temperature cycle performance, low-temperature discharge performance, rate capability and safety performance.
Owner:DONGGUAN AMPEREX TECH
Process for preparing lithium ion cell positive pole material
InactiveCN101070191AImprove normal temperature cycle performanceImprove high temperature performanceCell electrodesManganates/permanganatesElectrical batteryLithium electrode
The invention relates to a kind of preparation craft of anode material of lithium ion battery: keep temperature in the stove equal through entering pump to make it into microcirculation; the anode material of lithium manganese oxide is made by agglomeration for two times; the characteristic of this craft is that, goes into the first agglomeration under the state short of lithium, enter air or oxygen through microcirculation during agglomeration; mix surplus lithium salts and outcome of ball milling for the first agglomeration equally, goes into agglomeration for second time to get lithium manganese oxide which is anode material of lithium ion battery. The invention improves reversibility of circulation and capability of high temperature of the anode material of lithium ion battery effectively and influence charge discharge capacity little. The craft of the invention is simple and practical, the cost is low and it is propitious to industrial production of scale. Lithium ion battery material made by this method can apply to field broadly such as mobile telephone, notebook computer,minitype of video recorder electromotion cars broadly and so on.
Owner:SHANGHAI CHUANNA BATTERY MFG
Single crystal lithium manganese oxide for lithium ion battery and preparation method thereof
ActiveCN101841018ASmall specific surface areaInhibition of dissolutionPolycrystalline material growthCell electrodesAluminium-ion batterySingle crystal
The invention discloses a single crystal lithium manganese oxide for a lithium ion battery and a preparation method thereof. The single crystal lithium manganese oxide is a pure spinel prepared by doping at least three elements of Li, M1 and M2 with a chemical formula of Li(Mn2-x-y-zLixM1yM2z)O4, the specific surface area thereof is 0.2-0.6m<2> / g, and the tap density thereof is 1.5-2.5g / cm<3>; and in the chemical formula, M1 and M2 are respectively one element of Fe, Co, Al, Ca, Mg, Ti, Cr, Ni and Y, wherein 0.05<=x<=0.15, 0.01<=y<=0.1, and 0.01<=z<=0.1. The invention can eliminate oxygen defects caused in the high temperature sintering process, has low specific surface area of single crystal particles, inhibits Mn from dissolving better, has excellent multiplying power property and normal temperature and high temperature circulation performance, and can satisfy use requirements of power vehicles even electric vehicles; 10C / 1C ratio thereof is over 95%, and the service life thereof is at least 5 years; and the invention can be applied to lithium ion batteries used in the fields of cellphones, electric tools, electric motor cars, electric vehicles and the like.
Owner:HUNAN SHANSHAN ENERGY TECH CO LTD
Electrode material surface coating method and application thereof
ActiveCN105977476AImprove bindingEasy to operateElectrode thermal treatmentSecondary cellsMetallurgyLithium hydroxide
The invention relates to an electrode material surface coating method and application thereof. The method includes the steps that an electrode material and lithium hydrate are mixed; then TiO2 and / or Al2O3 are added into the obtained mixture and continue to be mixed; the obtained mixture is sintered at the first temperature and heated to the second higher temperature to be sintered to obtain the electrode material coated with an oxide layer, wherein the second temperature is higher than or equal to the first temperature, and the first temperature is higher than or equal to 400 DEG C. The method is easy to operate and suitable for large-scale production, and a coating layer of a prepared product is complete and even. A battery made of the electrode material coated with the oxide layer is excellent in circulating performance and high temperature performance and good in safety performance, the 500-cycle capacity retention ratio at the normal temperature is 93.5% or more, and the 500-cycle capacity retention ratio at the high temperature is 89.2% or more.
Owner:SHENZHEN CITY BATTERY NANOMETER TECH
Preparation method of lithium manganate material and method for preparing battery from lithium manganate material
InactiveCN104600281AShorten mixing timeImprove consistencyMaterial nanotechnologyElectrode manufacturing processesMicrosphereRoom temperature
The invention discloses a preparation method of a lithium manganate material. The method dislcosed by the invention comprises the following step: uniformly mixing lithium sources and manganese sources in a mole ratio, sending the mixture into a cabinet resistance furnace to sinter at a high temperature, cooling the mixture to room temperature to obtain the lithium manganate material. The method for preparing a battery from the lithium manganate material is characterized by comprising the following steps: ball milling and mixing the lithium manganate material and a chemically purified carbon nano-tube to obtain a composite material of lithium manganate and carbon nano-tube, wherein the composite material of lithium manganate and carbon nano-tube is used as a positive electrode active substance and a mixture of conductive carbon black and KS-6 is used as a conductive agent, modified intermediate-phase carbon microspheres are used as negative electrode active substances and conductive carbon black is used as a conductive agent; and pulping by a dry powder blender and a high-speed mixer.
Owner:SHANDONG SHENGONGHAITE ELECTRONICS TECH
A separating membrane used for a lithium ion battery, a preparing method thereof and the lithium ion battery
InactiveCN106558664ASolve the problem of heterogeneous compatibility difficultiesUniformity is not affectedSecondary cellsCell component detailsPolymer substrateRoom temperature
The invention relates to the field of lithium ion batteries, and discloses a separating membrane used for a lithium ion battery. The separating membrane includes a polymer substrate and a lithium titanate layer formed on one side of the polymer substrate. A preparing method of the separating membrane used for the lithium ion battery and the lithium ion battery comprising the separating membrane are also disclosed. Compared with a mixed anode, through adopting the lithium titanate layer of the separating membrane as an anode separating membrane of the lithium ion battery, a problem that heterogeneous compatibility of lithium titanate and graphite is difficult in a mixing process is overcome, anode material mixing processes are simplified and electrode sheet homogeneity is not influenced. The polymer substrate is coated with the lithium titanate, and the side coated with the lithium titanate layer is adhered to a graphite cathode, thus achieving functions of mixed anodes and further improving transient rate charging performance, low-temperature charging performance and room-temperature cyclic performance.
Owner:BYD CO LTD
Lithium ion battery, non-aqueous lithium ion battery electrolyte and application of fluoro sulfonic anhydride in preparation of non-aqueous lithium ion battery electrolyte
InactiveCN107146911AImprove ionic conductivityImprove normal temperature cycle performanceSecondary cellsHigh temperature storageOrganic solvent
The invention discloses a lithium ion battery, a non-aqueous lithium ion battery electrolyte and application of fluoro sulfonic anhydride in preparation of the non-aqueous lithium ion battery electrolyte. The lithium ion battery comprises a positive electrode, a negative electrode, a separator and the non-aqueous lithium ion battery electrolyte, wherein the non-aqueous lithium ion battery electrolyte comprises a non-aqueous organic solvent, an electrolyte salt and fluoro sulfonic anhydride, where the fluoro sulfonic anhydride is used as a functional additive, such as trifluoromethyl sulfonic anhydride, pentafluoroethyl sulfonic anhydride and perfluorobutyl sulfonic anhydride. The fluoro sulfonic anhydride is introduced as the functional additive and is applied to the non-aqueous lithium ion battery electrolyte and the battery, a compact and uniform SEI membrane with high lithium ion conductivity can be formed during initial formation of the battery prepared from the non-aqueous lithium ion battery electrolyte, so that the current distribution during charge-discharge period of the battery is uniform, the ion conductivity of lithium ions is improved, and the normal-temperature cycle property, the high-temperature cycle property, the high-temperature storage performance and the low-temperature cycle property of the lithium ion battery are further improved.
Owner:ZHUHAI SMOOTHWAY ELECTRONICS MATERIALS
Non-aqueous lithium ion battery electrolyte and lithium ion battery
InactiveCN107275675AImprove normal temperature cycle performanceImprove high temperature cycle performanceSecondary cellsOrganic electrolytesHigh temperature storageOrganic solvent
The invention discloses a non-aqueous lithium ion battery electrolyte and a lithium ion battery. The non-aqueous lithium ion battery electrolyte comprises an electrolyte salt, a non-aqueous organic solvent and functional additives, and the functional additives are a low-impedance additive and a negative electrode film forming additive. The low-impedance additive and the negative electrode film forming additive are introduced to the non-aqueous lithium ion battery electrolyte and the lithium ion battery, and a compact and uniform SEI film having a high lithium ion conductivity can be formed during the first formation of the battery made of the non-aqueous lithium ion battery electrolyte, so the current distribution of the battery is uniform during the charge and discharge, and the ion conductivity of lithium ions is increased, thereby enhancing the room temperature cycle performances, the high temperature cycle performances, the high temperature storage performances and the low temperature cycle performances of the lithium ion battery.
Owner:ZHUHAI SMOOTHWAY ELECTRONICS MATERIALS
High-voltage lithium-ion battery with Si/C composite anode
InactiveCN106450432AGood cycle performanceImprove high temperature cycle performanceSecondary cells servicing/maintenanceOrganic electrolytesLithium electrodeOxide
The invention discloses a high-voltage lithium-ion battery with a Si / C composite anode. The high-voltage lithium-ion battery comprises a cathode, an anode as well as a separator and a non-aqueous electrolyte placed between the cathode and the anode, wherein the active substance of the cathode is lithium transition metal oxide; the active substance of the anode is a Si-based substance; the separator is a ceramic separator; the non-aqueous electrolyte comprises a non-aqueous organic solvent, lithium salt and an additive, the additive comprises FEC (fluoroethylene carbonate) and isocyanurate compounds in the mass ratio being (6-36):1. Compared with the prior art, the lithium-ion battery using the electrolyte has excellent normal-temperature cycle performance, high-temperature cycle performance and high-temperature storage life, and the gas output in the high-temperature storage process can be remarkably reduced.
Owner:GUANGZHOU TINCI MATERIALS TECH
High-voltage electrolyte and lithium ion battery
InactiveCN106816629AImprove normal temperature cycle performanceImprove securitySecondary cellsOrganic electrolytesElectrical batteryPhysical chemistry
The invention relates to high-voltage electrolyte and a lithium ion battery. The high-voltage electrolyte comprises a non-water solvent, a lithium slat and an additive, wherein the additive comprises a high-voltage-resistant additive; the high-voltage-resistant additive comprises one or more of five-membered heterocyclic compounds and / or one or several materials from six-membered heterocyclic compounds; the general structural formula of the five-membered heterocyclic compounds is shown as the accompanying drawing; the general structural formula of the six-membered heterocyclic compounds is shown as the accompanying drawing. Through the improvement on the additive, the normal temperature circulation performance of the lithium ion battery prepared from the electrolyte at 4.85V or higher is greatly improved; in addition, the gas generation during the continuous charging and discharging can be inhibited by the electrolyte, so that the safety performance of the lithium ion battery using the electrolyte is greatly improved.
Owner:ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD
Electrolyte for lithium iron phosphate lithium-ion battery
InactiveCN103384019AExcellent low temperature charge and discharge performanceHigh melting pointSecondary cellsSolventLithium-ion battery
The invention discloses an electrolyte for a lithium iron phosphate lithium-ion battery. The electrolyte is prepared by uniformly mixing an electrolyte lithium salt and a non-aqueous organic solvent; the electrolyte lithium salt is a mixed lithium salt prepared by uniformly mixing lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and lithium bis(oxalate)borate (LiBOB) according to a molar ratio of 95-75%:5-25%; the concentration of the mixed lithium salt solution consisting of the electrolyte lithium salt and the non-aqueous organic solvent is 0.8-1.3 mol / L; and the non-aqueous organic solvent is prepared by uniformly mixing a conventional substrate solvent and a low-melting-point solvent with a volume percent ratio of 10%-50%:90%-50%. The electrolyte provided by the invention has a wider temperature window, better charging and discharging performances and good cycling stability, and is capable of giving consideration to high-temperature performances and low-temperature performances of the lithium iron phosphate lithium-ion battery.
Owner:SHANGHAI JIAO TONG UNIV +1
Lithium secondary battery electrolyte solution and lithium secondary battery containing lithium secondary battery electrolyte solution
ActiveCN108539270AImprove normal temperature cycle performanceImprove high temperature storage performanceSecondary cells servicing/maintenanceHigh temperature storageOrganic solvent
The invention relates to a lithium secondary battery electrolyte solution and a lithium secondary battery containing the lithium secondary battery electrolyte solution. The lithium secondary battery electrolyte solution is prepared from organic solvent, conductive lithium salt, a double (triflyl) amine replaced by a phenyl group or a pyridyl group and an additive. According to the electrolyte solution, by adding the double (triflyl) amine replaced by the phenyl group or the pyridyl group and triallyl isocyanurate and 2-propinyl methyl carbonate in a combined mode, the normal temperature cycleperformance, the high temperature storage performance and the low temperature discharging performance of the electrolyte solution can be improved.
Owner:GUANGZHOU TINCI MATERIALS TECH
Non-aqueous electrolyte and application thereof
InactiveCN103682442ARaise the temperatureImprove normal temperature cycle performanceSecondary cellsHydrogenOrganic solvent
The invention relates to a non-aqueous electrolyte which comprises an organic solvent, lithium salt and an additive, wherein the additive comprises an additive A, and the mass of the additive A accounts for 0.05%-5% of that of the non-aqueous electrolyte; the structural formula of the additive A is as follows: R1 represents the formula, R5 and R6 are independently selected from one of hydrogen, alkyl, alkoxy, phenyl, phenoxyl, halogen, halogen alkyl, halogen alkoxy, halogen phenyl and halogen phenoxyl, and n is an integer ranging from 1 to 10; and R2, R3 and R4 are independently selected from one of hydrogen, alkyl, alkoxy, phenyl, phenoxyl, halogen, halogen alkyl, halogen alkoxy, halogen phenyl and halogen phenoxyl, and halogen is fluorine, chlorine or bromine. The additive A is added into electrolyte, so that the high-temperature and normal-temperature cycling performance of a lithium ion battery are improved.
Owner:ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD
Lithium ion secondary battery and diaphragm thereof
ActiveCN103943805AIncrease electrolyte affinityElectrolyte absorption volumeSecondary cellsCell component detailsLithiumPolymer substrate
The invention provides a lithium ion secondary battery and a diaphragm thereof. The diaphragm of the lithium ion secondary battery comprises a polymer base material, wherein the surface of the polymer base material contains a compound with an onium salt structure. The lithium ion secondary battery comprises a positive electrode plate, a negative electrode plate, the diaphragm for isolating the positive electrode plate from the negative electrode plate, and electrolyte, wherein the diaphragm is a diaphragm of the lithium ion secondary battery. The diaphragm has the high ionic conductivity and the high electrolyte absorption volume; the lithium ion secondary battery has the good rate capability and the good normal-temperature cycling performance.
Owner:NINGDE AMPEREX TECH
High-voltage ternary lithium ion battery electrolyte and high-voltage ternary lithium ion battery
PendingCN111354978AImpede continued decompositionImprove high temperature storage performanceSecondary cells servicing/maintenanceElectrolytic agentPhysical chemistry
The invention belongs to the technical field of lithium ion batteries, and relates to a high-voltage ternary lithium ion battery electrolyte. The high-voltage ternary lithium ion battery electrolyte comprises a lithium salt, a non-aqueous organic solvent and an additive, and the additive contains vinylene carbonate, 1, 3-propane sultone and fluoroethylene carbonate and also comprises a combinationof a phosphate compound A, a sulfonate compound B and a sulphurous acid compound C. Compared with the prior art, through the synergistic effect of the compounds A, B and C, the electrolyte disclosedby the invention not only can improve the high-temperature performance of the lithium ion battery under high voltage, but also greatly improves the cycle performance and low-temperature performance ofthe battery. In addition, the invention also provides a high-voltage ternary lithium ion battery using the electrolyte.
Owner:东莞维科电池有限公司
Lithium ion secondary battery and electrolyte thereof
ActiveCN105244538AImprove high temperature storage performanceInhibit side effectsSecondary cellsHigh temperature storageLithium
The invention provides a lithium ion secondary battery and an electrolyte thereof. The electrolyte of the lithium ion secondary battery comprises lithium salt, a nonaqueous organic solvent and an additive. The additive comprises a diisocyanate compound, containing ether bonds, which is of a formula 1 structure and / or a formula 2 structure; in the formula 1, m, n and p are integers of 1 to 4 respectively; in the formula 2, x and y are integers of 1 to 4 respectively; and the weight percentage content of the diisocyanate compound, containing ether bonds, which is of the formula 1 structure and / or the formula 2 structure in the electrode of the lithium ion secondary battery is 0.1% to 2.5%. The lithium ion secondary battery comprises a positive plate, a negative plate, an isolating membrane arranged between the positive plate and the negative plate at an interval, and the electrode. The lithium ion secondary battery provided by the invention has high high-temperature storage performance, normal-temperature cycle performance and high-temperature cycle performance under high voltage.
Owner:CONTEMPORARY AMPEREX TECH CO
Ternary high-nickel electrolyte and high-nickel anode lithium ion battery containing same
InactiveCN109687010AReduced low temperature performanceGood low temperature performance, lowCell electrodesSecondary cellsHigh temperature storageSlurry
The invention provides ternary high-nickel electrolyte and a high-nickel anode lithium ion battery containing the electrolyte. The ternary high-nickel electrolyte is characterized by comprising, by weight, 13-15% of lithium salt, 80-85% of a non-aqueous organic solvent and 0.1-5% of an additive; wherein the additive comprises vinylene sulfate, vinylene carbonate, succinonitrile, tris (trimethyl silicon-based) phosphorus, lithium bifluroflavin imide and lithium dioxalate borate; the lithium salt is lithium hexafluorophosphate; the non-aqueous organic solvent comprises a cyclic carbonate compound, dimethyl carbonate and ethoxy pentafluoro tripolyphosphate; the high-nickel anode lithium ion battery containing the ternary high-nickel electrolyte adopts anode slurry prepared from high-nickel ternary anode powder, a conductive agent, a functional composite binder, a solvent N-methyl pyrrolidone to prepare the anode membrane, the high-nickel anode lithium ion battery has excellent normal-temperature cycle performance, high-temperature cycle performance and high-temperature storage service life, and can obviously reduce the gas yield in the high-temperature storage process.
Owner:湖北诺邦科技股份有限公司
Non-aqueous lithium-ion battery electrolyte and lithium ion battery
InactiveCN108075188AImprove first-time efficiencyImprove normal temperature cycle performanceSecondary cells servicing/maintenanceHigh temperature storageAlkaline earth metal
The invention discloses a non-aqueous lithium-ion battery electrolyte and a lithium ion battery. The non-aqueous lithium-ion battery electrolyte contains electrolyte salt, a non-aqueous organic solvent and a functional additive, wherein the functional additive is selected from one or combination of multiple compounds with chemical formulae of (K)(m+4)P(m+2)O(3m+7), (L)(n / 2+2)P(n+2)O(3n+7) and (K)s(PO3)s, K is an alkali metal element selected from a first main group except hydrogen; L is an alkali metal element selected from a second main group except beryllium in the periodic table of elements; (K)(m+4)P(m+2)O(3m+7) contains an anionic group P(m+2)O(3m+7)<(m+4)->, and m is 0 or a positive integer; (L)(n / 2+2)P(n+2)O(3n+7) contains an anionic group P(n+2)O(3n+7)<(n+4)->, and n is 0 or a positive even number; (K)s(PO3)s contains an anionic group (PO3)s<s->, and s is 3 or an integer larger than 3. During first formation of a battery prepared from the non-aqueous lithium-ion battery electrolyte, a dense and uniform SEI film with high lithium ion conductivity can be formed, so that first charge-discharge efficiency of the battery is improved, and normal-temperature cycling performance, rate capability, high-temperature cycling performance, high-temperature storage performance and low-temperature discharge performance of the battery are improved.
Owner:ZHUHAI SMOOTHWAY ELECTRONICS MATERIALS
Lithium ion battery with uniform and stable current density
InactiveCN103606703AImprove conductivityImprove stabilityCell electrodesSecondary cellsPower flowLithium iron phosphate
The invention discloses a lithium ion battery with uniform and stable current density. The lithium ion battery comprises a positive pole piece, a negative pole piece, and a diaphragm and electrolyte arranged between the positive pole piece and the negative pole piece; a positive pole comprises positive pole fluid, lithium iron phosphate particles, a conductive agent and a positive pole bonding agent; a negative pole comprises negative pole active materials, a negative pole bonding agent, a preservative, a thickening agent and de-ionized water. According to the lithium ion battery with the uniform and stable current density, the conductivity of the pole pieces is improved, the resistance of the battery is reduced and the electric conductivity of the pole pieces in a unit area is improved; the stability is placing negative pole slurry of the lithium ion battery for a long time is improved.
Owner:JIANGSU TENPOWER LITHIUM
Additive used for lithium ion battery electrolyte and electrolyte and lithium ion battery
ActiveCN109524715ASmall internal resistanceSmall K valueSecondary cells servicing/maintenanceHigh temperature storageDifluorophosphate
The invention relates to the field of lithium ion batteries, and discloses an additive used for a lithium ion battery electrolyte and the electrolyte and the lithium ion battery, wherein the additivecontains an additive a, an additive b and an additive c; the structural formula of the additive a is as shown in structural formula 1; the additive b is at least one of lithium difluorophosphate, lithium difluoroborate and lithium difluorosulfonimide; the additive c is at least one of vinylene carbonate, 1, 3-propane sultone, fluoroethylene carbonate, vinyl vinyl carbonate, glycol sulfite, vinylidene sulfate, propylene sulfite, dimethyl sulfate and trimethylene Sulfite. The additive is mixed by several mixtures, and is applied to the lithium ion battery electrolyte; the electrolyte has excellent overcharge performance, and is excellent in flame retardant property; furthermore, the lithium ion battery using the electrolyte has very small internal resistance and K value, and has relatively good normal temperature circulating performance and high temperature storage property.
Owner:桑顿新能源科技(长沙)有限公司
Temperature-sensitive combination electrode and preparation method thereof
ActiveCN108493419AExcellent PTC effectReliable PTC effectCell electrodesSecondary cellsElectrical resistance and conductanceAdhesive
The invention discloses a temperature-sensitive combination electrode. The temperature-sensitive combination electrode comprises an electrode active material, a temperature sensitive material and an adhesive, wherein the temperature sensitive material has dual effects of an electrode conducting agent and a temperature sensitive characteristic. At a normal operating temperature, the prepared temperature-sensitive electrode has high electrical conductivity, and electrochemical performance of the temperature-sensitive electrode is basically consistent with that of a conventional electrode; at a high temperature exceeding 100 DEG C, resistance and electrical conductivity of the temperature-sensitive combination electrode suddenly rise by more than three order of magnitudes, so that electrochemical capacity is suddenly decreased, and the thermal shutdown characteristic occurs; therefore, thermal runaway is inhibited, and the safety of a battery under misuse conditions such as overcharge, overheating and mechanical short circuit is improved. In addition, the temperature-sensitive combination electrode disclosed by the invention has the characteristics of being simple in preparation process, completely compatible with the conventional pole piece and battery manufacturing process, and the like.
Owner:WUHAN UNIV
Phosphite ester stabilizer and non-aqueous electrolyte comprising stabilizer
InactiveCN103904363AHigh molecular weightReduce volatilitySecondary cellsOrganic electrolytesOrganic solventPhosphite ester
The invention provides a phosphite ester stabilizer applicable to a non-aqueous electrolyte and the non-aqueous electrolyte comprising the stabilizer. The non-aqueous electrolyte comprises lithium salt, carbonic ester organic solvents, conventional additives and the phosphite ester stabilizer; the addition amount of the phosphite ester stabilizer in the non-aqueous electrolyte is 100ppm-1000ppm.
Owner:DONGGUAN SHANSHAN BATTERY MATERIALS
Electrolyte and lithium-ion secondary battery
ActiveCN101820082AImprove normal temperature cycle performanceGroup 4/14 element organic compoundsSecondary cellsOrganic solventHydrogen
The invention provides an electrolyte, which comprises a mixed solvent and an electrolytic salt. The mixed solvent comprises ethylene carbonate, propylene carbonate, low-viscosity organic solvent with a viscosity of no less than 1mPa.S at normal temperature and siloxane of the formula (1): C(R1R2)=C(R3)-Si-[O-(CH2)n-O-C(R4R5R6)]3(1), wherein R1 to R6 may be hydrogen, halogen, alkyl having 1 to 5 carbon atoms or halogenated alkyl having 1 to 5 carbon atoms independently; n is more than or equal to 1 and less than or equal to 10; the siloxane in the formula (1) is no more than 35 percent based on the weight of mixed solvent; and the total weight of the ethylene carbonate and propylene carbonate is 30 to 50 percent based on the weight of the mixed solvent. A secondary battery adopting the electrolyte of the invention better solves the shortcoming of poor low-temperature performance which happens when the electrolyte contains the propylene carbonate.
Owner:BYD CO LTD
Lithium ion battery non-aqueous electrolytic solution and lithium ion battery
InactiveCN113161613AImprove normal temperature cycle performanceImprove low temperature performanceSecondary cellsOrganic electrolytesLithium electrodeOrganic solvent
The invention discloses a lithium ion battery non-aqueous electrolytic solution, which comprises an electrolyte lithium salt, a non-aqueous organic solvent and a film-forming additive, wherein the film-forming additive comprises at least two of tetravinyl silane, tris (trimethylsilane) phosphate and a conventional additive. The invention also discloses a lithium ion battery containing the non-aqueous electrolytic solution of the lithium ion battery. According to the invention, the tetravinyl silane additive has a high HOMO energy level, and can form a passivation film (the oxygenolysis potential is 4.15 V vs Li / Li<+>) on a positive electrode interface prior to a solvent after battery capacity grading is finished, so that other components in the electrolytic solution are prevented from oxygenolysis on the positive electrode interface under high voltage, and the formed passivation film has better thermal stability; and the tris (trimethylsilane) phosphate has the characteristic of reducing the impedance of an interfacial film of the battery, and the combination of the high and low impedance additives can better improve the high and low temperature performance, the rate capability and the storage performance of the battery.
Owner:SHANSHAN ADVANCED MATERIALS QUZHOU CO LTD
Lithium ion battery electrolyte and preparation method thereof, lithium ion battery and electric vehicle
PendingCN112909341AImproved magnification performanceImprove cycle performancePropulsion by batteries/cellsSecondary cells servicing/maintenanceElectrolytic agentElectric cars
The invention relates to the technical field of energy storage, and provides a lithium ion battery electrolyte and preparation thereof. A composite lithium salt is dissolved in an organic solvent, the composite lithium salt comprises a lithium salt additive and lithium hexafluorophosphate, and the molar concentration of final lithium ions is 0.8-2.5 mol / L when the composite lithium salt is dissolved in an electrolyte solvent. The bis (trifluoromethylsulfonyl) lithium imide obviously improves the low-temperature performance and the high-temperature performance of the battery, and the bis (trifluoromethylsulfonyl) lithium imide is used as a main lithium salt additive and is matched with lithium hexafluorophosphate, so that the ionic conductivity of the electrolyte can be further improved, the component proportion of an SEI film can be improved, the conduction of Li<+> is facilitated. The positive electrode structure is stabilized, and the dissolution of transition metal ions is inhibited, so that the rate capability and the cycle performance of the lithium ion battery are improved. The invention also provides an electric vehicle with the lithium ion battery.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com