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CN107959021A - A kind of preparation method of cylinder nickle cobalt lithium manganate power battery - Google Patents

A kind of preparation method of cylinder nickle cobalt lithium manganate power battery Download PDF

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Publication number
CN107959021A
CN107959021A CN201711049472.6A CN201711049472A CN107959021A CN 107959021 A CN107959021 A CN 107959021A CN 201711049472 A CN201711049472 A CN 201711049472A CN 107959021 A CN107959021 A CN 107959021A
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CN
China
Prior art keywords
nickle cobalt
lithium manganate
cobalt lithium
active material
uniformly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711049472.6A
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Chinese (zh)
Inventor
贾克胜
邱扬
康书文
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Hubei Lion Amperex Technology Ltd
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Hubei Lion Amperex Technology Ltd
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Filing date
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Priority to CN201711049472.6A priority Critical patent/CN107959021A/en
Publication of CN107959021A publication Critical patent/CN107959021A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • 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
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)

Abstract

A kind of preparation method of cylinder nickle cobalt lithium manganate power battery, manufactures for lithium ion battery.Positive active material uses nickle cobalt lithium manganate, and NMP is solvent, and nickle cobalt lithium manganate, conductive agent, PVDF are uniformly mixedly configured into anode sizing agent with mixer；Negative electrode active material uses Delanium and lithium titanate mixture, and mass ratio is graphite：Lithium titanate=9:1, using deionized water as solvent, negative electrode active material, conductive agent, thickener, binding agent are uniformly mixedly configured into cathode size with mixer；Anode sizing agent, cathode size are coated uniformly on plus plate current-collecting body respectively using coating machine, form positive and negative electrode pole piece through drying, roll-in, cutting, welding electrode ear, respectively with wet method ceramic diaphragm it is rolled, enter shell, back welding, slot rolling, baking, fluid injection, welding cap cap, sealing, chemical conversion, partial volume obtain cylindrical lithium ion battery.Lithium ion battery made by the present invention has excellent chemical property and high safety performance.

Description

A kind of preparation method of cylinder nickle cobalt lithium manganate power battery
Technical field
The present invention relates to technical field of lithium ion, particularly a kind of cylinder nickle cobalt lithium manganate power battery preparation side Method.
Background technology
Nickle cobalt lithium manganate lithium-ion-power cell has the excellent properties such as low cost, high-energy-density, long circulation life, quilt It is widely popularized and applies to new-energy automobile field.But nickle cobalt lithium manganate ion battery security performance is compared with other materials body System is poor, particularly overcharges and acupuncture performance cannot meet security performance requirement.Common security performance improved method includes battery core Pole piece structure improves, active material improves and uses high security material.Such as pole piece coating alumina electron-like every From the ceramic coating of, ion conducting, use cladding process, or use that there is anti-overcharge class and resistance when nickle cobalt lithium manganate makes Fire electrolyte of class additive etc..At present, requirement of the power battery to energy density and security is very stringent, above-mentioned common Method can largely consume the energy density of battery, if in addition it is various improvement security materials be collocated with each other it is improper, no But being unable to reach improves the effect of battery core security performance, and also results in degradation of cell performance.
The content of the invention
For overcome the deficiencies in the prior art, goal of the invention of the invention is to provide a kind of cylinder nickle cobalt lithium manganate power electric The preparation method in pond, to improve the comprehensive performances such as cell safety.
For achieving the above object, preparation method of the invention is as follows：
（a）1-methyl-2-pyrrolidinone is used as solvent, by nickle cobalt lithium manganate, conductive agent, Kynoar vacuum high-speed stirred Machine is uniformly mixedly configured into anode sizing agent；
（b）Using extruding or transfer coater the anode sizing agent is coated uniformly on plus plate current-collecting body, through drying, roll-in, After cutting, welding electrode ear, anode pole piece is formed；
（c）Using deionized water as solvent, by negative electrode active material, conductive agent, thickener, binding agent vacuum high-speed stirred Machine is uniformly mixedly configured into cathode size；
（d）Using extruding or transfer coater the cathode size is coated uniformly on negative current collector, through drying, roll-in, After cutting, welding electrode ear, cathode pole piece is formed；
（e）The anode pole piece that is prepared by the production method, cathode pole piece and wet method ceramic diaphragm are rolled, enter shell, back welding, rolling Groove, baking, fluid injection, welding cap cap, sealing, chemical conversion, partial volume obtain cylindrical lithium ion battery.
The mass ratio nickle cobalt lithium manganate of the anode sizing agent：Conductive agent：Kynoar=94.5:3:2.5, cathode slurry It is 72% to expect solid content, is uniformly mixed with high-speed vacuum mixer, anode sizing agent viscosity is 12000 ± 2000mpa.s after mixing.
The negative electrode active material is Delanium and the mixture of lithium titanate, its mass ratio is Delanium：Metatitanic acid Lithium=9：1.
The mass ratio negative electrode active material of the cathode size：Conductive agent：Thickener：Binding agent=94.0:2:1.5: 2.5, cathode size solid content is 44%, is uniformly mixed with high-speed vacuum mixer, after mixing cathode size viscosity for 5000 ± 2000mpa.s。
Compared with prior art, the present invention by adding a certain proportion of lithium titanate material in negative electrode active material, fill Divide the characteristic using lithium titanate material low-voltage platform and high safety factor, and preparation is simple, processing performance is good, cost-effective The advantages that, particularly battery is during overcharge, and with the rise of voltage, lithium titanate material starts constantly to produce gas Body, ensures that battery internal gas under comparatively safe voltage can open explosion-protection equipment, substantially increases the safety of battery Performance and cycle life, made lithium ion battery have excellent chemical property and high safety performance.
Embodiment
The present invention uses 1-methyl-2-pyrrolidinone as solvent, in mass ratio example nickle cobalt lithium manganate：Conductive agent：Kynoar =94.5:3:2.5, anode sizing agent solid content is 72%, is uniformly mixed with high-speed vacuum mixer, slurry viscosity is after mixing 12000 ± 2000mpa.s is configured to anode sizing agent；
The anode sizing agent is coated uniformly on plus plate current-collecting body using extruding or transfer coater, through drying, roll-in, is divided Cut, after welding electrode ear, form anode pole piece；
Using deionized water as solvent, in mass ratio example negative electrode active material：Conductive agent：Thickener：Binding agent=94.0:2: 1.5:2.5, cathode size solid content is 44%, is uniformly mixed with high-speed vacuum mixer, after mixing slurry viscosity for 5000 ± 2000mpa.s is configured to cathode size, and wherein negative electrode active material is Delanium and the mixture of lithium titanate, its mass ratio For Delanium：Lithium titanate=9：1；
The cathode size through drying, roll-in, is divided uniformly coated on negative current collector using extruding or transfer coater Cut, after welding electrode ear, form cathode pole piece；
By prepared anode pole piece, cathode pole piece and wet method ceramic diaphragm are rolled, enter shell, back welding, slot rolling, baking, fluid injection, Welding cap cap, sealing, chemical conversion, partial volume obtain cylindrical lithium ion battery.
Test cell security test result is as follows：

Claims (4)

  1. A kind of 1. preparation method of cylinder nickle cobalt lithium manganate power battery, it is characterised in that：Production method is as follows：
    （a）1-methyl-2-pyrrolidinone is used as solvent, by nickle cobalt lithium manganate, conductive agent, Kynoar vacuum high-speed stirred Machine is uniformly mixedly configured into anode sizing agent；
    （b）Using extruding or transfer coater the anode sizing agent is coated uniformly on plus plate current-collecting body, through drying, roll-in, After cutting, welding electrode ear, anode pole piece is formed；
    （c）Using deionized water as solvent, by negative electrode active material, conductive agent, thickener, binding agent vacuum high-speed stirred Machine is uniformly mixedly configured into cathode size；
    （d）Using extruding or transfer coater the cathode size is coated uniformly on negative current collector, through drying, roll-in, After cutting, welding electrode ear, cathode pole piece is formed；
    （e）The anode pole piece that is prepared by the production method, cathode pole piece and wet method ceramic diaphragm are rolled, enter shell, back welding, rolling Groove, baking, fluid injection, welding cap cap, sealing, chemical conversion, partial volume obtain cylindrical lithium ion battery.
  2. 2. a kind of preparation method of high safety cylinder nickle cobalt lithium manganate power battery according to claim 1, its feature exist In：The mass ratio nickle cobalt lithium manganate of the anode sizing agent：Conductive agent：Kynoar=94.5:3:2.5, anode sizing agent contains admittedly Measure as 72%, be uniformly mixed with high-speed vacuum mixer, anode sizing agent viscosity is 12000 ± 2000mpa.s after mixing.
  3. A kind of 3. preparation method of cylinder nickle cobalt lithium manganate power battery according to claim 1, it is characterised in that：It is described Negative electrode active material is Delanium and the mixture of lithium titanate, its mass ratio is Delanium：Lithium titanate=9：1.
  4. A kind of 4. preparation method of cylinder nickle cobalt lithium manganate power battery according to claim 1, it is characterised in that：It is described The mass ratio negative electrode active material of cathode size：Conductive agent：Thickener：Binding agent=94.0:2:1.5:2.5, cathode size is solid Content is 44%, is uniformly mixed with high-speed vacuum mixer, and cathode size viscosity is 5000 ± 2000mpa.s after mixing.
CN201711049472.6A 2017-10-31 2017-10-31 A kind of preparation method of cylinder nickle cobalt lithium manganate power battery Pending CN107959021A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109273718A (en) * 2018-09-20 2019-01-25 珠海格力电器股份有限公司 Lithium ion battery and preparation method thereof
CN109560251A (en) * 2018-11-09 2019-04-02 上海力信能源科技有限责任公司 A kind of lithium ion battery negative electrode and preparation method thereof, lithium ion battery
CN109860510A (en) * 2019-01-16 2019-06-07 广西师范大学 A kind of nickle cobalt lithium manganate physical mixed lithium manganese phosphate is the battery preparation method of positive electrode
CN111384430A (en) * 2019-03-21 2020-07-07 东北师范大学 Preparation method of high-safety polymer ternary lithium power battery

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102403528A (en) * 2011-07-30 2012-04-04 珠海锂源新能源科技有限公司 Lithium titanate and nickel cobalt lithium manganate system lithium ion battery and preparation method thereof
CN103746139A (en) * 2013-12-10 2014-04-23 宁波维科电池股份有限公司 Lithium ion power battery with good safety performances
CN104282878A (en) * 2013-07-10 2015-01-14 浙江万向亿能动力电池有限公司 High-performance lithium titanate power battery
CN106299332A (en) * 2016-11-02 2017-01-04 天津市捷威动力工业有限公司 A kind of safe power lithium-ion battery of height using lithium titanate blending graphite cathode sheet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102403528A (en) * 2011-07-30 2012-04-04 珠海锂源新能源科技有限公司 Lithium titanate and nickel cobalt lithium manganate system lithium ion battery and preparation method thereof
CN104282878A (en) * 2013-07-10 2015-01-14 浙江万向亿能动力电池有限公司 High-performance lithium titanate power battery
CN103746139A (en) * 2013-12-10 2014-04-23 宁波维科电池股份有限公司 Lithium ion power battery with good safety performances
CN106299332A (en) * 2016-11-02 2017-01-04 天津市捷威动力工业有限公司 A kind of safe power lithium-ion battery of height using lithium titanate blending graphite cathode sheet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109273718A (en) * 2018-09-20 2019-01-25 珠海格力电器股份有限公司 Lithium ion battery and preparation method thereof
CN109560251A (en) * 2018-11-09 2019-04-02 上海力信能源科技有限责任公司 A kind of lithium ion battery negative electrode and preparation method thereof, lithium ion battery
CN109860510A (en) * 2019-01-16 2019-06-07 广西师范大学 A kind of nickle cobalt lithium manganate physical mixed lithium manganese phosphate is the battery preparation method of positive electrode
CN111384430A (en) * 2019-03-21 2020-07-07 东北师范大学 Preparation method of high-safety polymer ternary lithium power battery

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