CN104282935B - A kind of lithium titanate battery and manufacture method - Google Patents

A kind of lithium titanate battery and manufacture method Download PDF

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Publication number
CN104282935B
CN104282935B CN201310290965.4A CN201310290965A CN104282935B CN 104282935 B CN104282935 B CN 104282935B CN 201310290965 A CN201310290965 A CN 201310290965A CN 104282935 B CN104282935 B CN 104282935B
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negative
battery
electrolyte
organic
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CN104282935A (en
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石先兴
张琦
葛民民
吕豪杰
陈军
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Wanxiang Group Corp
Wanxiang A123 Systems Asia Co Ltd
Wanxiang Electric Vehicle Co Ltd
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Wanxiang Group Corp
Wanxiang A123 Systems Asia Co Ltd
Wanxiang Electric Vehicle Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0566—Liquid materials
    • H01M10/0569—Liquid materials characterised by the solvents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

The present invention relates to a kind of lithium titanate battery, including positive plate, negative plate, barrier film, electrolyte and outer packing, described positive plate, negative plate form by positive and negative collector and coated in the positive and negative electrode material on positive and negative electrode collector respectively, positive electrode includes positive active material, positive conductive agent and positive electrode binder, and the positive active material is irregular type tertiary cathode material.Due to employing irregular type ternary material in positive pole, because the maximum charge current potential of nickeliferous ratio high type positive pole is in 4.4V, so that battery prepared by the material has very high specific capacity, more than 180mAh/g, while there is higher stability；90Wh/kg can be realized using height ratio capacity positive pole and the energy density of lithium titanate anode collocation assembling battery core in the present invention, be significantly higher than existing lithium titanate battery energy density.

Description

A kind of lithium titanate battery and manufacture method
Technical field
The invention belongs to technical field of lithium ion, more particularly to a kind of irregular type three with high-energy-density Member-lithium titanate type lithium-ions battery and manufacture method.
Background technology
The negative material of the lithium ion battery of commercialization at present is essentially all using graphite-like carbon material.Carbon material has Heat endurance height, good conductivity, Lithium-ion embeding deviate from the advantages that speed is fast, invertibity is high, but carbon material is scarce there is also some Point：First charge-discharge efficiency is low, easily analyses lithium etc., compared with carbon material, lithium titanate when overcharging（Li4Ti5O12）With obvious Advantage：1）It is a kind of removal lithium embedded insertion material close to zero volume, recurring structure does not change in charge and discharge process, cycle performance It is good；2）There is good charge and discharge platform；3）Theoretical specific capacity is 175 mAh/g, and actual specific capacity is up to 160 mAh/g, union In in land regions；4）Do not reacted with electrolyte；5）The prices of raw materials are cheap, and preparation is easier to；6）Possesses fast charging and discharging Feature（An order of magnitude higher than Carbon diffusion system）；It possesses the possibility of long-life and high safety, therefore either exists Plug-in hybrid vehicle or scale energy storage field, its application prospect are unanimously expected, and are increasingly becoming full generation in recent years Study hotspot in the range of boundary.However, current stage lithium titanate battery does not move towards market, one of main cause is titanium Sour lithium and common LiFePO 4 of anode material（LiFePO4）, LiMn2O4（LiMn2O4）, ternary material（LiNi1/3Co1/3Mn1/ 3O2）Collocation is assembled into that lithium ion battery energy density is relatively low, and generally only 50Wh/kg -75Wh/kg, main cause are metatitanic acids Lithium-ion embeding, higher (the vs. Li of abjection potential plateau of cathode of lithium+/ Li=1.55V), far above graphite cathode lithium from Son is embedded, abjection potential plateau (vs. Li+The V of/Li=0), cause the output voltage of full battery generally there was only 1.7V -2.5V Left and right, well below the 3.2-4.2V using graphite cathode lithium ion battery.In addition, above-mentioned LiFePO 4 of anode material （LiFePO4）, LiMn2O4（LiMn2O4）, ternary material（LiNi1/3Co1/3Mn1/3O2）Gram volume be generally less than 160mAh/g, Therefore the battery capacity is low, and voltage platform is low, and the low problem of energy density is consistent all undecided.
The A of China Patent Publication No. CN 1529382, publication date September in 2004 15 days, entitled high power plastics lithium ion The patent of invention of battery, this application case disclose a kind of high-power plastic lithium-ion cell, including positive plate, negative plate, electricity are situated between Film material, electrolyte material, soft compound package material and plastic casing, positive plate include positive electrode, adhesive, DBP, carbon Black, aluminium net, negative plate include negative material, adhesive, DBP, carbon black, copper mesh, and membrane materials for electrolyte includes adhesive, titanium dioxide Silicon, DBP, positive plate, negative plate and dielectric film are combined unit battery core by heating, unit battery core are overlapped, using multiple After closing membrane material packaging, assembled battery is formed, lug is drawn, the positive and negative electrode of assembled battery is passed through ear pole material and positive and negative electrode Terminal is connected, and assembled battery is placed in into plastics with vivo, lid is merged with box body by ultrasonic wave, forms complete high-power modeling Expect lithium ion battery.It is disadvantageous in that negative material uses graphite-like carbon material, and first charge-discharge efficiency is low, when overcharging Easily analysis lithium.
The content of the invention
It is an object of the invention to use graphite-like carbon material to solve the negative material of existing lithium ion battery, first Efficiency for charge-discharge is low, the defects of easily analysing lithium when overcharging and a kind of irregular type ternary-metatitanic acid with high-energy-density is provided Lithium type lithium ion battery.
It is a further object to provide a kind of manufacture method of lithium titanate battery.
To achieve these goals, the present invention uses following technical scheme：
A kind of lithium titanate battery, including positive plate, negative plate, barrier film, electrolyte and outer packing, described positive plate, bear Pole piece forms by positive and negative collector and coated in the positive and negative electrode material on positive and negative electrode collector respectively, and positive electrode is included just Pole active material, positive conductive agent and positive electrode binder, the positive active material are LiNi0.33Co0.33Mn0.33O2、 LiNi0.5Co0.3Mn0.2O2、LiNi0.6Co0.2Mn0.2O2、LiNi0.7Co0.15Mn0.15O2、LiNi0.8Co0.1Mn0.1O2In at least one Kind；The weight/mass percentage composition of each component is in positive electrode：Positive active material 70-92%, positive conductive agent 1-15%, it is just very viscous Tie agent 1-15%.
In the technical program, irregular type tertiary cathode material LiNi0.33Co0.33Mn0.33O2、 LiNi0.5Co0.3Mn0.2O2、LiNi0.6Co0.2Mn0.2O2、LiNi0.7Co0.15Mn0.15O2、LiNi0.8Co0.1Mn0.1O2With high power capacity, Low material cost, relatively stablize, be layered composite structure material, under higher charging voltage, there can be higher specific capacity, no Regular ternary material is stratiform Li [Li1/3Mn2/3]O2, stratiform LiMO2With spinel-type LiMe2O4Composite construction；
LiNi1/3Co1/3Mn1/3O2Structure change is smaller under different temperatures and multiplying power, so material has stabilization well Property, LiNi1/3Co1/3Mn1/3O2Due to substituting expensive cobalt using nickel manganese, make material that there is the price of relative moderate； LiNi0.5Co0.3Mn0.2O2The gram volume of material can be made to play higher, improve the volume energy density of battery, capacity is high, Cost performance is good；LiNi0.7Co0.15Mn0.15O2The content energy of nickel is improved, the specific capacity of material is greatly promoted, reduces the content of cobalt again Material cost can be reduced, has the characteristics that specific capacity is high, cycle performance is excellent, high-temperature storage performance is good.
Preferably, negative material includes negative electrode active material, cathode conductive agent, thickener and negative electrode binder, it is described Negative electrode active material is lithium titanate Li4Ti5O12, cathode conductive agent is in superconduction carbon black, crystalline flake graphite, CNT, carbon fiber At least one, negative electrode binder is butadiene-styrene rubber, organic olefin(e) acid or carboxylic acid esters, and thickener is polymethacrylates, poly- At least one of acrylonitrile, hydroxymethyl cellulose, the weight/mass percentage composition of each component is in negative material：Negative electrode active material Matter, 67-86%, cathode conductive agent 3-15%, negative electrode binder 3-15%, thickener 2-3%.In the technical program, lithium titanate is A kind of removal lithium embedded insertion material close to zero volume, recurring structure does not change in charge and discharge process, good cycle；Have very well Charge and discharge platform；Theoretical specific capacity is 175 mAh/g, and actual specific capacity concentrates on land regions up to 160 mAh/g； Do not reacted with electrolyte；The prices of raw materials are cheap, and preparation is easier to.
Preferably, the mass ratio between positive active material is 1:1.
Preferably, the solvent of electrolyte is organic fluoride ester, organic carbonate, the mixed liquor of organic nitrile ester, electrolyte For LiPF6、LiBOB、LiBF4、LiODFB、LiN(CF3SO2)2、LiCF3SO3At least one of；Wherein, organic fluoride ester, have Machine carbonic ester, the volume ratio of organic nitrile ester are 1:2-3:1.5-2, LiPF in electrolyte6Content >=80%.
Preferably, using 1-METHYLPYRROLIDONE as the solvent for making slurry, described positive electrode binder is polyvinylidene fluoride Alkene, butadiene-styrene rubber, organic olefin(e) acid or carboxylic acid esters, conductive agent are in superconduction carbon black, crystalline flake graphite, CNT, carbon fiber It is at least one.
Preferably, positive and negative electrode collector uses aluminium foil, the thickness of aluminium foil is 15~20 μm.
A kind of manufacture method of lithium titanate battery, the manufacture method comprise the following steps：
a）Make positive and negative plate：Positive electrode is disperseed in organic solvent, anode sizing agent to be obtained after stirring, applied Be overlying on plus plate current-collecting body, 100~140 DEG C drying after roll-in obtain positive plate；Negative material is soluble in water, stir It is coated on afterwards on negative current collector, through roll-in negative plate after 90~120 DEG C of drying；
b）Pole piece toasts：Above-mentioned pole piece is put into 130-150 DEG C of baking 24-36h in vacuum drying oven, persistently vacuumizes, controls Positive and negative electrode pole piece moisture≤200ppm processed；
c）Make battery core：By step b）After obtained positive and negative plate is cut, according to positive plate, barrier film, negative plate order Battery core is made using laminated structure or takeup type structure；
d）Welding packaging：By the positive and negative plate in battery core respectively by tab welding together, formed positive and negative electrode exit, Battery core is put into aluminium plastic packaging bag, draws positive and negative lug respectively, is heated at tab, makes the plastic cement and lug of aluminium plastic bag Glue fuses, and the side of soft-package battery is open state, remains electrolyte injection；
e）Encapsulate fluid injection：After high-voltage electrolyte is injected into battery core, liquid injection port is sealed；
f）Forming and capacity dividing：The lithium titanate with high-energy-density will be obtained after packaged battery preliminary filling, chemical conversion, partial volume Soft package lithium battery.
Preferably, step a）Thickness after middle positive plate roll-in is 100~300 μm, and compacted density is 2.5~3.3g/ cm3；Thickness after negative plate roll-in is 60~200 μm, and compacted density is 1.3~2.0g/cm3。
Preferably, step a）In in the viscosity of anode sizing agent be 1000-3000 mPas, sieved after stirring, 100-120 mesh.
The beneficial effects of the invention are as follows：
1）Due to employing irregular type ternary material in positive pole, due to the maximum charge current potential of nickeliferous ratio high type positive pole In 4.4V (vs. Li/Li+), so that battery prepared by the material has very high specific capacity, more than 180mAh/g, simultaneously With higher stability；Can using the energy density of height ratio capacity positive pole and lithium titanate anode collocation assembling battery core in the present invention 90Wh/kg is realized, is significantly higher than existing lithium titanate battery energy density；
2）Negative pole uses lithium titanate material, the negative pole of preparation lithium ion it is embedding, it is de- during not recurring structure change, circulation Performance is good；Lithium-ion embeding, higher (the vs. Li of abjection potential plateau+/ Li=1.55V), in the absence of analysis lithium problem, security It is high；
3）Due to the addition of high voltage bearing organic fluoride ester in electrolyte so that electrolyte and electrode interface are under high voltages Good electrochemical stability is kept, compared with negative pole under high charge voltage by embedded more lithiums, the high-energy that battery can be achieved is close Degree.
Brief description of the drawings
Fig. 1 is lithium titanate battery high/low temperature discharge curve prepared by embodiment 1.
Fig. 2 is lithium titanate battery rate discharge curves figure prepared by embodiment 2.
Fig. 3 is 55 degree of high temperature circulation curve maps of lithium titanate battery prepared by embodiment 3.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further explained：
Embodiment 1
A kind of manufacture method of lithium titanate battery, the manufacture method comprise the following steps：
a）Make positive and negative plate：Segregation tetrafluoroethene (PVDF) is made into quality with 1-METHYLPYRROLIDONE (NMP) first The solution of fraction 8%, conductive agent is then added, high speed shear is scattered 2 hours, by positive electrode LiNi0.33Co0.33Mn0.33O2 + LiNi0.5Co0.3Mn0.2O2Scattered that anode sizing agent is obtained after stirring in organic solvent, high speed shear is disperseed 2 hours, added It is 1000 mPas to enter NMP regulations viscosity, and after high speed shear is scattered 1 hour, anode sizing agent is sieved with 120 mesh wire nettings, incited somebody to action Anode sizing agent after sieve is uniformly coated on the aluminium foil that thickness is 20 microns, 110 DEG C of drying, the anode pole piece after drying is carried out Roll-in, the thickness after positive plate roll-in are 100 μm, compacted density 3.0g/cm3；Control the quality of each component in anode sizing agent Percentage composition is：Positive active material 92%, positive conductive agent 2%, positive electrode binder 6%；Negative material is soluble in water, negative pole It is coated on after slurry sieving on the aluminium foil that thickness is 20 microns, using 110 DEG C of drying pole pieces, the pole piece after drying is subjected to roller Pressure, the thickness after negative plate roll-in are 100 μm, compacted density 1.9g/cm3；The weight/mass percentage composition for controlling each component is：It is negative Pole active material 82%, cathode conductive agent 6%, negative electrode binder 10%, thickener 2%；Wherein, positive conductive agent be superconduction carbon black with CNT, mass ratio 1:1, positive electrode binder is Kynoar；Cathode conductive agent superconduction carbon black and carbon fiber, mass ratio For 1:1, negative electrode binder is butadiene-styrene rubber, and thickener is polymethacrylates and polyacrylonitrile, volume ratio 1:1；
b）Pole piece toasts：Above-mentioned pole piece is put into 130 DEG C of baking 36h in vacuum drying oven, persistently vacuumized, control is positive and negative Pole pole piece moisture≤200ppm；
c）Make battery core：By step b）After obtained positive and negative plate is cut, according to positive plate, barrier film, negative plate order Battery core is made using laminated structure or takeup type structure；
d）Welding packaging：By the positive and negative plate in battery core respectively by tab welding together, formed positive and negative electrode exit, Battery core is put into aluminium plastic packaging bag, draws positive and negative lug respectively, is heated at tab, makes the plastic cement and lug of aluminium plastic bag Glue fuses, and the side of soft-package battery is open state, remains electrolyte injection；
e）Encapsulate fluid injection：After high-voltage electrolyte is injected into battery core, liquid injection port is sealed；Wherein, electrolyte be organic fluoride ester, The mixed liquor of organic carbonate, organic nitrile ester, organic fluoride ester, organic carbonate, the volume ratio of organic nitrile ester are 1:2:1.5； Electrolyte is LiPF in electrolyte6, LiBOB and LiBF4, the mass percent of each component is in electrolyte：85%LiPF6、10% LiBOB, 5%LiBF4；
f）Forming and capacity dividing：Preliminary filling, chemical conversion are disposably completed with 0.2C system, and constant-current charge to 3.2V, discharge was charged Caused gas in journey, 1.0V is then discharged to 0.2C system, will be produced after charge and discharge cycles 2 times in battery charge and discharge process Raw gas discharge, that is, complete the manufacture of metatitanic acid lithium-ions battery of the present invention.
Embodiment 2
A kind of manufacture method of lithium titanate battery, the manufacture method comprise the following steps：
a）Make positive and negative plate：Segregation tetrafluoroethene (PVDF) is made into quality with 1-METHYLPYRROLIDONE (NMP) first The solution of fraction 8%, conductive agent is then added, high speed shear is scattered 2 hours, by positive electrode LiNi0.33Co0.33Mn0.33O2 + LiNi0.6Co0.2Mn0.2O2Scattered that anode sizing agent is obtained after stirring in organic solvent, high speed shear is disperseed 2 hours, added It is 2000 mPas to enter NMP regulations viscosity, and after high speed shear is scattered 1 hour, anode sizing agent is sieved with 100 mesh wire nettings, incited somebody to action Anode sizing agent after sieve is uniformly coated on the aluminium foil that thickness is 15 microns, 100 DEG C of drying, the anode pole piece after drying is carried out Roll-in, the thickness after positive plate roll-in are 200 μm, compacted density 2.5g/cm3；Control the quality of each component in anode sizing agent Percentage composition is：Positive active material 90%, positive conductive agent 2%, positive electrode binder 8%；Negative material is soluble in water, negative pole It is coated on after slurry sieving on the aluminium foil that thickness is 15 microns, with 100 DEG C of drying pole pieces, the pole piece after drying is subjected to roll-in, Thickness after negative plate roll-in is 200 μm, compacted density 1.3g/cm3；The weight/mass percentage composition for controlling each component is：Negative pole Active material 86%, cathode conductive agent 4%, negative electrode binder 8%, thickener 2%；Wherein, positive conductive agent is crystalline flake graphite and carbon Nanotube, mass ratio 1:1, positive electrode binder is butadiene-styrene rubber；Cathode conductive agent superconduction carbon black and CNT, mass ratio are 1:1, negative electrode binder is acrylic acid, and thickener is polyacrylonitrile and hydroxymethyl cellulose, volume ratio 1:1；
b）Pole piece toasts：Above-mentioned pole piece is put into 140 DEG C of baking 24h in vacuum drying oven, persistently vacuumized, control is positive and negative Pole pole piece moisture≤200ppm；
c）Make battery core：By step b）After obtained positive and negative plate is cut, according to positive plate, barrier film, negative plate order Battery core is made using laminated structure or takeup type structure；
d）Welding packaging：By the positive and negative plate in battery core respectively by tab welding together, formed positive and negative electrode exit, Battery core is put into aluminium plastic packaging bag, draws positive and negative lug respectively, is heated at tab, makes the plastic cement and lug of aluminium plastic bag Glue fuses, and the side of soft-package battery is open state, remains electrolyte injection；
e）Encapsulate fluid injection：After high-voltage electrolyte is injected into battery core, liquid injection port is sealed；Wherein, electrolyte be organic fluoride ester, The mixed liquor of organic carbonate, organic nitrile ester, organic fluoride ester, organic carbonate, the volume ratio of organic nitrile ester are 1:3:2；Electricity It is LiPF to solve electrolyte in liquid6, LiODFB and LiN (CF3SO2)2, the mass percent of each component is in electrolyte：90%LiPF6、 5%LiODFB, 5% LiN (CF3SO2)2；
f）Forming and capacity dividing：Preliminary filling, chemical conversion are disposably completed with 0.2C system, and constant-current charge to 3.2V, discharge was charged Caused gas in journey, 1.0V is then discharged to 0.2C system, will be produced after charge and discharge cycles 2 times in battery charge and discharge process Raw gas discharge, that is, complete the manufacture of metatitanic acid lithium-ions battery of the present invention.
Embodiment 3
A kind of manufacture method of lithium titanate battery, the manufacture method comprise the following steps：
a）Make positive and negative plate：Segregation tetrafluoroethene (PVDF) is made into quality with 1-METHYLPYRROLIDONE (NMP) first The solution of fraction 8%, conductive agent is then added, high speed shear is scattered 2 hours, by positive electrode LiNi0.7Co0.15Mn0.15O2 + LiNi0.6Co0.2Mn0.2O2Scattered that anode sizing agent is obtained after stirring in organic solvent, high speed shear is disperseed 2 hours, added It is 3000 mPas to enter NMP regulations viscosity, and after high speed shear is scattered 1 hour, anode sizing agent is sieved with 110 mesh wire nettings, incited somebody to action Anode sizing agent after sieve is uniformly coated on the aluminium foil that thickness is 18 microns, 140 DEG C of drying, the anode pole piece after drying is carried out Roll-in, the thickness after positive plate roll-in are 300 μm, compacted density 3.3g/cm3；Control the quality of each component in anode sizing agent Percentage composition is：Positive active material 90%, positive conductive agent 2%, positive electrode binder 8%；Negative material is soluble in water, negative pole It is coated on after slurry sieving on the aluminium foil that thickness is 18 microns, with 140 DEG C of drying pole pieces, the pole piece after drying is subjected to roll-in, Thickness after negative plate roll-in is 300 μm, compacted density 2g/cm3；The weight/mass percentage composition for controlling each component is：Negative pole is lived Property material 86%, cathode conductive agent 4%, negative electrode binder 8%, thickener 2%；Wherein, positive conductive agent is that CNT and carbon are fine Dimension, mass ratio 1:1, positive electrode binder is ethyl acetate；Cathode conductive agent superconduction carbon black and CNT, mass ratio 1:1, Negative electrode binder is isoamyl propionate, and thickener is polymethacrylates and hydroxymethyl cellulose, volume ratio 1:1；
b）Pole piece toasts：Above-mentioned pole piece is put into 150 DEG C of baking 30h in vacuum drying oven, persistently vacuumized, control is positive and negative Pole pole piece moisture≤200ppm；
c）Make battery core：By step b）After obtained positive and negative plate is cut, according to positive plate, barrier film, negative plate order Battery core is made using laminated structure or takeup type structure；
d）Welding packaging：By the positive and negative plate in battery core respectively by tab welding together, formed positive and negative electrode exit, Battery core is put into aluminium plastic packaging bag, draws positive and negative lug respectively, is heated at tab, makes the plastic cement and lug of aluminium plastic bag Glue fuses, and the side of soft-package battery is open state, remains electrolyte injection；
e）Encapsulate fluid injection：After high-voltage electrolyte is injected into battery core, liquid injection port is sealed；Wherein, electrolyte be organic fluoride ester, The mixed liquor of organic carbonate, organic nitrile ester, organic fluoride ester, organic carbonate, the volume ratio of organic nitrile ester are 1:2:2；Electricity It is LiPF to solve electrolyte in liquid6、LiCF3SO3, the mass percent of each component is in electrolyte：90%LiPF6、10% LiCF3SO3；
f）Forming and capacity dividing：Preliminary filling, chemical conversion are disposably completed with 0.2C system, and constant-current charge to 3.2V, discharge was charged Caused gas in journey, 1.0V is then discharged to 0.2C system, will be produced after charge and discharge cycles 2 times in battery charge and discharge process Raw gas discharge, that is, complete the manufacture of metatitanic acid lithium-ions battery of the present invention.
Embodiment 4
A kind of manufacture method of lithium titanate battery, the manufacture method comprise the following steps：
a）Make positive and negative plate：Segregation tetrafluoroethene (PVDF) is made into quality with 1-METHYLPYRROLIDONE (NMP) first The solution of fraction 8%, conductive agent is then added, high speed shear is scattered 2 hours, by positive electrode LiNi0.33Co0.33Mn0.33O2 + LiNi0.8Co0.1Mn0.1O2Scattered that anode sizing agent is obtained after stirring in organic solvent, high speed shear is disperseed 2 hours, added It is 3000 mPas to enter NMP regulations viscosity, and after high speed shear is scattered 1 hour, anode sizing agent is sieved with 110 mesh wire nettings, incited somebody to action Anode sizing agent after sieve is uniformly coated on the aluminium foil that thickness is 18 microns, 140 DEG C of drying, the anode pole piece after drying is carried out Roll-in, the thickness after positive plate roll-in are 300 μm, compacted density 3.3g/cm3；Control the quality of each component in anode sizing agent Percentage composition is：Positive active material 92%, positive conductive agent 2%, positive electrode binder 6%；Negative material is soluble in water, negative pole It is coated on after slurry sieving on the aluminium foil that thickness is 18 microns, with 140 DEG C of drying pole pieces, the pole piece after drying is subjected to roll-in, Thickness after negative plate roll-in is 300 μm, compacted density 2g/cm3；The weight/mass percentage composition for controlling each component is：Negative pole is lived Property material 86%, cathode conductive agent 4%, negative electrode binder 8%, thickener 2%；Wherein, positive conductive agent is that CNT and carbon are fine Dimension, mass ratio 1:1, positive electrode binder is ethyl acetate；Cathode conductive agent superconduction carbon black and CNT, mass ratio 1:1, Negative electrode binder is isoamyl propionate, and thickener is polymethacrylates and hydroxymethyl cellulose, volume ratio 1:1；
b）Pole piece toasts：Above-mentioned pole piece is put into 150 DEG C of baking 30h in vacuum drying oven, persistently vacuumized, control is positive and negative Pole pole piece moisture≤200ppm；
c）Make battery core：By step b）After obtained positive and negative plate is cut, according to positive plate, barrier film, negative plate order Battery core is made using laminated structure or takeup type structure；
d）Welding packaging：By the positive and negative plate in battery core respectively by tab welding together, formed positive and negative electrode exit, Battery core is put into aluminium plastic packaging bag, draws positive and negative lug respectively, is heated at tab, makes the plastic cement and lug of aluminium plastic bag Glue fuses, and the side of soft-package battery is open state, remains electrolyte injection；
e）Encapsulate fluid injection：After high-voltage electrolyte is injected into battery core, liquid injection port is sealed；Wherein, electrolyte be organic fluoride ester, The mixed liquor of organic carbonate, organic nitrile ester, organic fluoride ester, organic carbonate, the volume ratio of organic nitrile ester are 1:2:2；Electricity It is LiPF to solve electrolyte in liquid6、LiCF3SO3, the mass percent of each component is in electrolyte：90%LiPF6、10% LiCF3SO3；
f）Forming and capacity dividing：Preliminary filling, chemical conversion are disposably completed with 0.2C system, and constant-current charge to 3.2V, discharge was charged Caused gas in journey, 1.0V is then discharged to 0.2C system, will be produced after charge and discharge cycles 2 times in battery charge and discharge process Raw gas discharge, that is, complete the manufacture of metatitanic acid lithium-ions battery of the present invention.
Embodiment 5
A kind of manufacture method of lithium titanate battery, the manufacture method comprise the following steps：
a）Make positive and negative plate：Segregation tetrafluoroethene (PVDF) is made into quality with 1-METHYLPYRROLIDONE (NMP) first The solution of fraction 8%, conductive agent is then added, high speed shear is scattered 2 hours, by positive electrode LiNi0.5Co0.3Mn0.2O2 + LiNi0.6Co0.2Mn0.2O2Scattered that anode sizing agent is obtained after stirring in organic solvent, high speed shear is disperseed 2 hours, added It is 3000 mPas to enter NMP regulations viscosity, and after high speed shear is scattered 1 hour, anode sizing agent is sieved with 110 mesh wire nettings, incited somebody to action Anode sizing agent after sieve is uniformly coated on the aluminium foil that thickness is 18 microns, 140 DEG C of drying, the anode pole piece after drying is carried out Roll-in, the thickness after positive plate roll-in are 300 μm, compacted density 3.3g/cm3；Control the quality of each component in anode sizing agent Percentage composition is：Positive active material 90%, positive conductive agent 2%, positive electrode binder 8%；Negative material is soluble in water, negative pole It is coated on after slurry sieving on the aluminium foil that thickness is 18 microns, with 140 DEG C of drying pole pieces, the pole piece after drying is subjected to roll-in, Thickness after negative plate roll-in is 300 μm, compacted density 2g/cm3；The weight/mass percentage composition for controlling each component is：Negative pole is lived Property material 86%, cathode conductive agent 4%, negative electrode binder 8%, thickener 2%；Wherein, positive conductive agent is that CNT and carbon are fine Dimension, mass ratio 1:1, positive electrode binder is ethyl acetate；Cathode conductive agent superconduction carbon black and CNT, mass ratio 1:1, Negative electrode binder is isoamyl propionate, and thickener is polymethacrylates and hydroxymethyl cellulose, volume ratio 1:1；
b）Pole piece toasts：Above-mentioned pole piece is put into 150 DEG C of baking 30h in vacuum drying oven, persistently vacuumized, control is positive and negative Pole pole piece moisture≤200ppm；
c）Make battery core：By step b）After obtained positive and negative plate is cut, according to positive plate, barrier film, negative plate order Battery core is made using laminated structure or takeup type structure；
d）Welding packaging：By the positive and negative plate in battery core respectively by tab welding together, formed positive and negative electrode exit, Battery core is put into aluminium plastic packaging bag, draws positive and negative lug respectively, is heated at tab, makes the plastic cement and lug of aluminium plastic bag Glue fuses, and the side of soft-package battery is open state, remains electrolyte injection；
e）Encapsulate fluid injection：After high-voltage electrolyte is injected into battery core, liquid injection port is sealed；Wherein, electrolyte be organic fluoride ester, The mixed liquor of organic carbonate, organic nitrile ester, organic fluoride ester, organic carbonate, the volume ratio of organic nitrile ester are 1:2:2；Electricity It is LiPF to solve electrolyte in liquid6、LiCF3SO3, the mass percent of each component is in electrolyte：90%LiPF6、10% LiCF3SO3；
f）Forming and capacity dividing：Preliminary filling, chemical conversion are disposably completed with 0.2C system, and constant-current charge to 3.2V, discharge was charged Caused gas in journey, 1.0V is then discharged to 0.2C system, will be produced after charge and discharge cycles 2 times in battery charge and discharge process Raw gas discharge, that is, complete the manufacture of metatitanic acid lithium-ions battery of the present invention.
Embodiment 6
A kind of manufacture method of lithium titanate battery, the manufacture method comprise the following steps：
a）Make positive and negative plate：Segregation tetrafluoroethene (PVDF) is made into quality with 1-METHYLPYRROLIDONE (NMP) first The solution of fraction 8%, conductive agent is then added, high speed shear is scattered 2 hours, by positive electrode LiNi0.33Co0.33Mn0.33O2+ LiNi0.7Co0.15Mn0.15O2 + LiNi0.6Co0.2Mn0.2O2It is scattered that anode sizing agent is obtained after stirring in organic solvent, it is high Speed shearing is scattered 2 hours, and it is 3000 mPas to add NMP regulations viscosity, and after high speed shear is scattered 1 hour, anode sizing agent is used 110 mesh wire nettings sieve, and the anode sizing agent after sieving are uniformly coated on the aluminium foil that thickness is 18 microns, and 140 DEG C of drying will Anode pole piece after drying carries out roll-in, and the thickness after positive plate roll-in is 300 μm, compacted density 3.3g/cm3；Control is just The weight/mass percentage composition of each component is in the slurry of pole：Positive active material 70%, positive conductive agent 15%, positive electrode binder 15%；Will Negative material is soluble in water, is coated on after cathode size sieving on the aluminium foil that thickness is 18 microns, will with 140 DEG C of drying pole pieces Pole piece after drying carries out roll-in, and the thickness after negative plate roll-in is 300 μm, compacted density 2g/cm3；Control each component Weight/mass percentage composition is：Negative electrode active material 67%, cathode conductive agent 15%, negative electrode binder 15%, thickener 3%；Wherein, positive pole Conductive agent is CNT and carbon fiber, mass ratio 1:1, positive electrode binder is ethyl acetate；Cathode conductive agent superconduction carbon black With CNT, mass ratio 1:1, negative electrode binder is isoamyl propionate, and thickener is polymethacrylates and methylol Cellulose, volume ratio 1:1；
b）Pole piece toasts：Above-mentioned pole piece is put into 150 DEG C of baking 30h in vacuum drying oven, persistently vacuumized, control is positive and negative Pole pole piece moisture≤200ppm；
c）Make battery core：By step b）After obtained positive and negative plate is cut, according to positive plate, barrier film, negative plate order Battery core is made using laminated structure or takeup type structure；
d）Welding packaging：By the positive and negative plate in battery core respectively by tab welding together, formed positive and negative electrode exit, Battery core is put into aluminium plastic packaging bag, draws positive and negative lug respectively, is heated at tab, makes the plastic cement and lug of aluminium plastic bag Glue fuses, and the side of soft-package battery is open state, remains electrolyte injection；
e）Encapsulate fluid injection：After high-voltage electrolyte is injected into battery core, liquid injection port is sealed；Wherein, electrolyte be organic fluoride ester, The mixed liquor of organic carbonate, organic nitrile ester, organic fluoride ester, organic carbonate, the volume ratio of organic nitrile ester are 1:2:2；Electricity It is LiPF to solve electrolyte in liquid6、LiCF3SO3, the mass percent of each component is in electrolyte：90%LiPF6、10% LiCF3SO3；
f）Forming and capacity dividing：Preliminary filling, chemical conversion are disposably completed with 0.2C system, and constant-current charge to 3.2V, discharge was charged Caused gas in journey, 1.0V is then discharged to 0.2C system, will be produced after charge and discharge cycles 2 times in battery charge and discharge process Raw gas discharge, that is, complete the manufacture of metatitanic acid lithium-ions battery of the present invention.
Embodiment 7
A kind of manufacture method of lithium titanate battery, the manufacture method comprise the following steps：
a）Make positive and negative plate：Segregation tetrafluoroethene (PVDF) is made into quality with 1-METHYLPYRROLIDONE (NMP) first The solution of fraction 8%, conductive agent is then added, high speed shear is scattered 2 hours, by positive electrode LiNi0.33Co0.33Mn0.33O2+ LiNi0.5Co0.3Mn0.2O2+LiNi0.6Co0.2Mn0.2O2+LiNi0.7Co0.15Mn0.15O2+LiNi0.8Co0.1Mn0.1O2It is dispersed in organic In solvent, anode sizing agent is obtained after stirring, high speed shear is scattered 2 hours, and it is 2000 mPas to add NMP regulation viscosity, After high speed shear is scattered 1 hour, anode sizing agent is sieved with 100 mesh wire nettings, and the anode sizing agent after sieving is uniformly coated on into thickness Spend on the aluminium foil for 15 microns, 100 DEG C of drying, the anode pole piece after drying is subjected to roll-in, the thickness after positive plate roll-in is 200 μm, compacted density 2.5g/cm3；The weight/mass percentage composition for controlling each component in anode sizing agent is：Positive active material 90%, positive conductive agent 3%, positive electrode binder 7%；Negative material is soluble in water, thickness is coated on after cathode size sieving as 15 On the aluminium foil of micron, with 100 DEG C of drying pole pieces, the pole piece after drying is subjected to roll-in, the thickness after negative plate roll-in is 200 μ M, compacted density 1.3g/cm3；The weight/mass percentage composition for controlling each component is：Negative electrode active material 86%, cathode conductive agent 4%, Negative electrode binder 8%, thickener 2%；Wherein, positive conductive agent is crystalline flake graphite and CNT, mass ratio 1:1, it is just very viscous Knot agent is butadiene-styrene rubber；Cathode conductive agent superconduction carbon black and CNT, mass ratio 1:1, negative electrode binder is acrylic acid, is increased Thick dose is polyacrylonitrile and hydroxymethyl cellulose, volume ratio 1:1；
b）Pole piece toasts：Above-mentioned pole piece is put into 140 DEG C of baking 24h in vacuum drying oven, persistently vacuumized, control is positive and negative Pole pole piece moisture≤200ppm；
c）Make battery core：By step b）After obtained positive and negative plate is cut, according to positive plate, barrier film, negative plate order Battery core is made using laminated structure or takeup type structure；
d）Welding packaging：By the positive and negative plate in battery core respectively by tab welding together, formed positive and negative electrode exit, Battery core is put into aluminium plastic packaging bag, draws positive and negative lug respectively, is heated at tab, makes the plastic cement and lug of aluminium plastic bag Glue fuses, and the side of soft-package battery is open state, remains electrolyte injection；
e）Encapsulate fluid injection：After high-voltage electrolyte is injected into battery core, liquid injection port is sealed；Wherein, electrolyte be organic fluoride ester, The mixed liquor of organic carbonate, organic nitrile ester, organic fluoride ester, organic carbonate, the volume ratio of organic nitrile ester are 1:3:2；Electricity It is LiPF to solve electrolyte in liquid6、LiBOB、LiBF4、LiODFB、LiN(CF3SO2)2With LiCF3SO3, each component in electrolyte Mass percent is：80%LiPF6、2%LiBOB、6%LiBF4、5%LiODFB、4%LiN(CF3SO2)2With 3%LiCF3SO3；
f）Forming and capacity dividing：Preliminary filling, chemical conversion are disposably completed with 0.2C system, and constant-current charge to 3.2V, discharge was charged Caused gas in journey, 1.0V is then discharged to 0.2C system, will be produced after charge and discharge cycles 2 times in battery charge and discharge process Raw gas discharge, that is, complete the manufacture of metatitanic acid lithium-ions battery of the present invention.
By discharge test of the lithium titanate battery made from embodiment 1 at -20 DEG C, 0 DEG C, 25 DEG C, 55 DEG C, Fig. 1 is as a result seen；
Lithium titanate battery different multiplying made from embodiment 2 is put into a test, as a result sees Fig. 2；
Lithium titanate battery made from embodiment 3 is done into loop test at 55 DEG C, as a result sees Fig. 3.

Claims (1)

1. a kind of lithium titanate battery, it is characterised in that the manufacture method of the lithium titanate battery comprises the following steps：
a）Make positive and negative plate：Kynoar (PVDF) is made into mass fraction 8% with 1-METHYLPYRROLIDONE (NMP) first Solution, then add conductive agent, high speed shear is scattered 2 hours, by positive electrode LiNi0.33Co0.33Mn0.33O2 + LiNi0.5Co0.3Mn0.2O2Scattered that anode sizing agent is obtained after stirring in organic solvent, high speed shear is disperseed 2 hours, added It is 1000 mPas to enter NMP regulations viscosity, and after high speed shear is scattered 1 hour, anode sizing agent is sieved with 120 mesh wire nettings, incited somebody to action Anode sizing agent after sieve is uniformly coated on the aluminium foil that thickness is 20 microns, 110 DEG C of drying, the anode pole piece after drying is carried out Roll-in, the thickness after positive plate roll-in are 100 μm, compacted density 3.0g/cm3；Control the quality of each component in anode sizing agent Percentage composition is：Positive active material 92%, positive conductive agent 2%, positive electrode binder 6%；Negative material is soluble in water, negative pole It is coated on after slurry sieving on the aluminium foil that thickness is 20 microns, using 110 DEG C of drying pole pieces, the pole piece after drying is subjected to roller Pressure, the thickness after negative plate roll-in are 100 μm, compacted density 1.9g/cm3；The weight/mass percentage composition for controlling each component is：It is negative Pole active material 82%, cathode conductive agent 6%, negative electrode binder 10%, thickener 2%；Wherein, positive conductive agent be superconduction carbon black with CNT, mass ratio 1:1, positive electrode binder is Kynoar；Cathode conductive agent superconduction carbon black and carbon fiber, mass ratio For 1:1, negative electrode binder is butadiene-styrene rubber, and thickener is polymethacrylates and polyacrylonitrile, volume ratio 1:1；
b）Pole piece toasts：Above-mentioned pole piece is put into 130 DEG C of baking 36h in vacuum drying oven, persistently vacuumized, control positive and negative electrode pole Piece moisture≤200ppm；
c）Make battery core：By step b）After obtained positive and negative plate is cut, used according to the order of positive plate, barrier film, negative plate Battery core is made in laminated structure or takeup type structure；
d）Welding packaging：By the positive and negative plate in battery core respectively by tab welding together, formed positive and negative electrode exit, by electricity Core is put into aluminium plastic packaging bag, draws positive and negative lug respectively, is heated at tab, and the plastic cement and tab for making aluminium plastic bag melt Close, the side of soft-package battery is open state, remains electrolyte injection；
e）Encapsulate fluid injection：After high-voltage electrolyte is injected into battery core, liquid injection port is sealed；Wherein, electrolyte is organic fluoride ester, organic The mixed liquor of carbonic ester, organic nitrile ester, organic fluoride ester, organic carbonate, the volume ratio of organic nitrile ester are 1:2:1.5；Electrolysis Electrolyte is LiPF in liquid6, LiBOB and LiBF4, the mass percent of each component is in electrolyte：85%LiPF6, 10%LiBOB, 5%LiBF4；
f）Forming and capacity dividing：Preliminary filling, chemical conversion are disposably completed with 0.2C system, constant-current charge to 3.2V, are discharged in charging process Caused gas, 1.0V is then discharged to 0.2C system, will be in battery charge and discharge process after charge and discharge cycles 2 times caused by Gas is discharged, that is, completes the manufacture of metatitanic acid lithium-ions battery of the present invention.
CN201310290965.4A 2013-07-11 2013-07-11 A kind of lithium titanate battery and manufacture method Expired - Fee Related CN104282935B (en)

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CN106328925A (en) * 2015-06-30 2017-01-11 宁德时代新能源科技股份有限公司 Lithium ion secondary battery and positive pole piece thereof
CN105680052B (en) * 2016-01-14 2019-09-06 厦门韫茂科技有限公司 The method for promoting energy-storage battery conductive agent material property
CN107974014A (en) * 2016-10-21 2018-05-01 苏州今道创业投资有限公司 A kind of preparation method of metatitanic acid micro-nano mitron/PVDF composite membranes
CN107256979A (en) * 2017-06-22 2017-10-17 北京圣比和科技有限公司 A kind of 3V level lithium-ion-power cells and its preparation based on lithium titanate anode
CN109119599B (en) * 2017-06-26 2022-03-15 宁德时代新能源科技股份有限公司 Secondary battery and preparation method thereof
CN109119631B (en) * 2017-06-26 2021-09-21 宁德时代新能源科技股份有限公司 Secondary battery
CN108232285B (en) * 2017-12-30 2019-03-22 骆驼集团新能源电池有限公司 A kind of high magnification lithium titanate battery and preparation method thereof
CN109378520B (en) * 2018-11-13 2021-03-26 上海电气国轩新能源科技有限公司 Nickel cobalt lithium manganate and lithium titanate system battery and preparation method thereof
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1614808A (en) * 2003-11-07 2005-05-11 松下电器产业株式会社 Non-aqueous electrolyte secondary battery
CN101478044A (en) * 2009-01-07 2009-07-08 厦门钨业股份有限公司 Multi-element composite positive pole material for lithium secondary battery and preparation thereof
CN101572308A (en) * 2009-06-18 2009-11-04 深圳市贝特瑞新能源材料股份有限公司 Method for improving combination property of lithium ion battery material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1614808A (en) * 2003-11-07 2005-05-11 松下电器产业株式会社 Non-aqueous electrolyte secondary battery
CN101478044A (en) * 2009-01-07 2009-07-08 厦门钨业股份有限公司 Multi-element composite positive pole material for lithium secondary battery and preparation thereof
CN101572308A (en) * 2009-06-18 2009-11-04 深圳市贝特瑞新能源材料股份有限公司 Method for improving combination property of lithium ion battery material

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