[go: up one dir, main page]

CN107123812B - A positive electrode current collector, its preparation method and its application - Google Patents

A positive electrode current collector, its preparation method and its application Download PDF

Info

Publication number
CN107123812B
CN107123812B CN201710243721.9A CN201710243721A CN107123812B CN 107123812 B CN107123812 B CN 107123812B CN 201710243721 A CN201710243721 A CN 201710243721A CN 107123812 B CN107123812 B CN 107123812B
Authority
CN
China
Prior art keywords
layer
current collector
positive electrode
electrode current
metal
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.)
Active
Application number
CN201710243721.9A
Other languages
Chinese (zh)
Other versions
CN107123812A (en
Inventor
严佐毅
刘文卿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Chongqing Jinmei New Material Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to CN201710243721.9A priority Critical patent/CN107123812B/en
Publication of CN107123812A publication Critical patent/CN107123812A/en
Application granted granted Critical
Publication of CN107123812B publication Critical patent/CN107123812B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/665—Composites
    • H01M4/667—Composites in the form of layers, e.g. coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • 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
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/661—Metal or alloys, e.g. alloy coatings
    • 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

Landscapes

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

Abstract

The invention discloses a positive current collector, a preparation method and application thereof. The preparation method comprises sequentially plating an adhesion enhancing layer, an aluminum metal coating and an anti-oxidation layer by evaporation coating; the application of the positive electrode current collector is mainly applied to lithium ion batteries. The positive current collector can realize the light weight of the battery and improve the energy density, and can ensure that the aluminum plating layer is not easy to fall off and oxidize.

Description

Positive current collector, and preparation method and application thereof
Technical Field
The invention relates to a positive current collector, a preparation method and application thereof.
Background
The current collector of the anode of the traditional lithium ion battery is aluminum foil. With the development of lithium battery technology, high energy density, light weight and flexibility of lithium ion batteries are pursued by people. And the aluminum foil is thinned, so that the light weight of the lithium ion battery can be realized, and the energy density is improved. However, due to the limitation of the preparation technology, the thickness of the aluminum foil is difficult to reduce (the current aluminum foil can be produced to 8 μm in mass); further, as the aluminum foil becomes thinner, the mechanical strength is lowered, and the workability is lowered, so that a new "thinning technique" is required.
In the prior art, aluminum is plated on plastic (such as PET) as a current collector to improve the energy density of the battery, reduce the cost and lighten the weight of the battery. But the maximum thickness of aluminizing is 2.0 μm (a certain thickness is needed to achieve satisfactory conductivity), which is much thicker than that of aluminizing coating of conventional packaging materials, and the thicker the coating, the easier the aluminizing coating is to be peeled off from the plastic.
In addition, the surface of the aluminum foil needs to be subjected to anti-oxidation treatment, because the aluminum foil is directly contacted with the anode material, and the aluminum foil can be corroded by the electrolyte after a long time, so that the service life of the lithium ion battery is shortened. We find that after the plastic is directly plated with aluminum, the aluminum plating layer is easy to fall off by adopting the traditional anti-oxidation method.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a positive electrode current collector that can reduce the weight of a battery, increase the energy density, and reduce the cost, and can prevent an aluminum plating layer from falling off and oxidizing.
Another aspect of the present invention is to provide a method for preparing a positive electrode current collector.
A third aspect of the present invention is to provide a use of the positive electrode collector.
The invention provides a positive current collector which has a multilayer structure and comprises a plastic film, wherein an adhesive force enhancement layer, an aluminum metal coating and an anti-oxidation layer are sequentially plated on the upper surface and the lower surface of the plastic film.
Further, the plastic film is OPP, PI, PET, CPP or PVC.
Further, the thickness of the plastic film is 2-12 μm.
Further, the adhesion enhancing layer is a metal coating or a non-metal coating, and when the adhesion enhancing layer is a metal coating, the metal is Ni; when the coating is a non-metal coating, the non-metal is SiC or Si3N4Or Al2O3。
Further, the thickness of the adhesion enhancement layer is 10-100 nm.
Further, the thickness of the aluminum metal plating layer is 100-2000 nm.
Further, the oxidation prevention layer is a dense metal layer or a non-metal layer, and when the oxidation prevention layer is a metal layer, the metal is Ni; when a non-metal layer, the non-metal is Al2O3、Si3N4Or SiC.
Further, the thickness of the anti-oxidation layer is 10-100 nm.
The invention provides a preparation method of a positive current collector, which comprises the following steps:
s1, firstly, performing corona treatment on the surface of a plastic film to be coated, then placing a wound roll plastic film into a vacuum chamber of a double-sided reciprocating electron beam evaporation coating machine, sealing the vacuum chamber, and gradually vacuumizing until the vacuum degree reaches 3 multiplied by 10-3-6×10-3Pa, adopting an electron gun to accelerate electron bombardment collision to evaporate the raw material Al2O3Adjusting the unwinding speed, the winding speed and the evaporation capacity, and Al2O3Absorbing heat and gasifying to form Al layer on the surface of the moving film2O3A plating layer, i.e., an adhesion enhancing layer;
s2, Al plating obtained in S12O3Placing the film into a vacuum chamber of a double-sided reciprocating evaporation film plating machine, sealing the vacuum chamber, and gradually vacuumizing until the vacuum degree reaches 4 multiplied by 10-2-6×10-2Pa, heating the evaporation mechanism to 1300-1400 ℃, then conveying the aluminum to the evaporation mechanism, adjusting the unwinding speed, the winding speed and the evaporation capacity, continuously melting and evaporating the aluminum in the evaporation mechanism, and forming an aluminum-plated layer, namely an aluminum metal plating layer, on the surface of the moving film;
s3, placing the aluminizer obtained in the step S2 into a vacuum chamber of a film plating machine, sealing the vacuum chamber, and vacuumizing step by step until the vacuum degree reaches 3 multiplied by 10-3-6×10-3Pa, adopting an electron gun to accelerate electron bombardment collision to evaporate the raw material Al2O3Adjusting the unwinding speed, the winding speed and the evaporation capacity, and Al2O3Absorbing heat and gasifying to form Al layer on the surface of the moving film2O3And the coating is an oxidation preventing layer.
The application of the positive electrode current collector provided by the invention is mainly in batteries, especially in lithium ion batteries.
The beneficial effect of the invention is that,
(1) the weight reduction is realized through the plastic film layer, wherein the weight reduction of the aluminized film current collector can be realized by 50%, the thickness is reduced by 30%, and the energy density of the battery is obviously improved;
(2) the plastic film as a substrate has stronger tensile strength, so that windows such as tension, pressure and the like in the preparation process can be larger, and thus, a material preparation section can realize larger compaction density by adopting higher pressure, and the manufacturing capacity of the process is improved;
(3) the adhesion enhancement layer is plated, so that the falling of the aluminum metal coating can be reduced, and the performance loss of the current collector caused by the easy falling of the aluminum metal coating can be effectively prevented;
(4) the anti-oxidation layer obtained by adopting the film coating mode can solve the problem that an aluminum coating on the plastic falls off and simultaneously achieves the aim of preventing oxidation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a multilayer structure of a positive electrode current collector of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only preferred embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the positive current collector has a multilayer structure, and includes a plastic film 1, wherein an adhesion enhancing layer 2, an aluminum metal plating layer 3 and an oxidation preventing layer 4 are sequentially plated on the upper and lower surfaces of the plastic film 1.
The weight reduction is realized through the plastic film layer, wherein the weight reduction of the aluminized film current collector can be realized by 50%, the thickness is reduced by 30%, and the energy density of the battery is obviously improved. The plastic film is preferably OPP, PI, PET, CPP or PVC. Wherein OPP is oriented polypropylene plastic; PI is polyimide plastic; PET is polyethylene terephthalate plastic, CPP is casting polypropylene plastic, and PVC is polyvinyl chloride plastic. Further preferably PET, PI, CPP; the thickness of the plastic film is preferably 2 to 12 μm, and more preferably 6 to 10 μm. The temperature resistance of the plastic film is 120-300 ℃.
The adhesion enhancement layer is plated, so that the falling of the aluminum metal coating can be reduced, and the performance loss of the current collector caused by the easy falling of the aluminum metal coating can be effectively prevented. The adhesion enhancement layer is preferably a metal coating or a non-metal coating, and when the adhesion enhancement layer is a metal coating, the metal is Ni; when the coating is a non-metal coating, the non-metal is SiC or Si3N4Or Al2O3More preferably, Al2O3。Al2O3The adhesive property with the plastic film layer and the aluminum metal coating is better, so that the aluminum coating is more difficult to fall off. The thickness of the adhesion enhancing layer is preferably 10 to 100nm, more preferably 10 to 50 nm.
The thickness of the aluminum metal plating layer may be 100 to 2000nm, and more preferably 500 to 1000 nm.
The oxidation preventing layer functions or aims to prevent the aluminum metal plating layer from being oxidized. The anti-oxidation layer can be a compact metal layer or a non-metal layer, and when the anti-oxidation layer is a metal layer, the metal is Ni; when a non-metal layer, the non-metal is Al2O3、Si3N4Or SiC, more preferably Al2O3. When the anti-oxidation layer is obtained by adopting a film coating mode, the problem that an aluminum coating on the plastic falls off can be solved, and the aim of preventing oxidation is fulfilled. The thickness of the oxidation preventing layer may be 10 to 100nm, and more preferably 10 to 50 nm.
This is further illustrated by the following specific examples.
Example 1
A preparation method of a positive current collector comprises the following steps:
s1, firstly, performing corona treatment on the surface of a plastic film to be coated, then placing a wound roll plastic film into a vacuum chamber of a double-sided reciprocating electron beam evaporation coating machine, sealing the vacuum chamber, and gradually vacuumizing until the vacuum degree reaches 3 multiplied by 10-3-6×10-3Pa, adopting an electron gun to accelerate electron bombardment collision to evaporate the raw material Al2O3Adjust and place the medicine wellWinding speed, winding speed and evaporation amount, Al2O3Absorbing heat and gasifying to form Al layer on the surface of the moving film2O3A plating layer, i.e., an adhesion enhancing layer;
s2, Al plating obtained in S12O3Placing the film into a vacuum chamber of a double-sided reciprocating evaporation film plating machine, sealing the vacuum chamber, and gradually vacuumizing until the vacuum degree reaches 4 multiplied by 10-2-6×10-2Pa, heating the evaporation mechanism to 1300-1400 ℃, then conveying the aluminum to the evaporation mechanism, adjusting the unreeling speed, the reeling speed and the evaporation amount, continuously melting and evaporating the aluminum in the evaporation mechanism, and forming a layer of aluminum on the surface of the moving film, namely an aluminum metal coating;
s3, placing the aluminizer obtained in the step S2 into a vacuum chamber of a film plating machine, sealing the vacuum chamber, and vacuumizing step by step until the vacuum degree reaches 3 multiplied by 10-3-6×10-3Pa, adopting an electron gun to accelerate electron bombardment collision to evaporate the raw material Al2O3Adjusting the unwinding speed, the winding speed and the evaporation capacity, and Al2O3Absorbing heat and gasifying to form Al layer on the surface of the moving film2O3And the coating is an oxidation preventing layer. The application of the positive electrode current collector provided by the invention is mainly in batteries, especially in lithium ion batteries.
Thereby obtaining a positive electrode current collector having a multi-layered structure.
The most basic function of the positive electrode current collector obtained in example 1 is to collect current and store the positive electrode material as a carrier, that is, collect current generated by the positive electrode material (battery active material) to form a large current to be output to the outside.
The positive electrode current collector obtained in example 1 was tested, and the test results can be concluded as follows:
(1) the weight reduction is realized through the plastic film layer, wherein the weight reduction of the aluminized film current collector can be realized by 50%, the thickness is reduced by 30%, and the energy density of the battery is obviously improved. (ii) a
(2) The plastic film as a substrate has stronger tensile strength, so that windows such as tension, pressure and the like in the preparation process can be larger, and thus, a material preparation section can realize larger compaction density by adopting higher pressure, and the manufacturing capacity of the process is improved;
(3) the adhesion enhancement layer is plated, so that the falling of the aluminum metal coating can be reduced, and the performance loss of the current collector caused by the easy falling of the aluminum metal coating can be effectively prevented;
(4) the anti-oxidation layer obtained by adopting the film coating mode can solve the problem that an aluminum coating on the plastic falls off and simultaneously achieves the aim of preventing oxidation.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (9)

1.一种正极集流体，其特征在于，其具有多层结构，包括塑料薄膜，在所述塑料薄膜的上、下表面依次镀有粘接力增强层、铝金属镀层和防氧化层，所述粘接力增强层为非金属镀膜，所述非金属为Al2O3。1. a positive electrode current collector, is characterized in that, it has multi-layer structure, comprises plastic film, and is plated successively with adhesion enhancement layer, aluminum metal coating and anti-oxidation layer on the upper and lower surfaces of described plastic film, so The adhesion enhancement layer is a non-metallic plating film, and the non-metal is Al 2 O 3 . 2.根据权利要求1所述的正极集流体，其特征在于，所述塑料薄膜为OPP、PI、PET、CPP或PVC。2 . The positive electrode current collector according to claim 1 , wherein the plastic film is OPP, PI, PET, CPP or PVC. 3 . 3.根据权利要求1所述的正极集流体，其特征在于，所述塑料薄膜的厚度为2-12μm。3 . The positive electrode current collector according to claim 1 , wherein the thickness of the plastic film is 2-12 μm. 4 . 4.根据权利要求1所述的正极集流体，其特征在于，所述粘接力增强层的厚度为10-100nm。4 . The positive electrode current collector according to claim 1 , wherein the thickness of the adhesion enhancing layer is 10-100 nm. 5 . 5.根据权利要求1所述的正极集流体，其特征在于，所述铝金属镀层的厚度为100-2000nm。5 . The positive electrode current collector according to claim 1 , wherein the thickness of the aluminum metal plating layer is 100-2000 nm. 6 . 6.根据权利要求1所述的正极集流体，其特征在于，所述防氧化层是致密的金属层或非金属层，当为金属层时，所述金属为Ni；当为非金属层时，所述非金属为Al2O3、Si3N4或SiC。6 . The positive electrode current collector according to claim 1 , wherein the anti-oxidation layer is a dense metal layer or a non-metal layer, when it is a metal layer, the metal is Ni; when it is a non-metal layer , the non-metal is Al 2 O 3 , Si 3 N 4 or SiC. 7.根据权利要求1所述的正极集流体，其特征在于，所述防氧化层的厚度为10-100nm。7 . The positive electrode current collector according to claim 1 , wherein the anti-oxidation layer has a thickness of 10-100 nm. 8 . 8.一种权利要求1所述的正极集流体的制备方法，其特征在于，包括如下步骤：8. the preparation method of the positive electrode current collector of claim 1, is characterized in that, comprises the steps: S1.首先对需要镀膜的塑料薄膜表面进行电晕处理，然后将卷筒塑料薄膜置入双面往返电子束蒸发镀膜机真空室内，将真空室密封，逐级抽真空至真空度达到3×10-3-6×10- 3Pa，采用电子枪加速电子轰击碰撞蒸镀原料Al2O3，调整好放卷速度、收卷速度和蒸发量，Al2O3吸热气化，在移动的薄膜表面形成一层Al2O3镀层，即粘接力增强层；S1. First perform corona treatment on the surface of the plastic film to be coated, then put the roll of plastic film into the vacuum chamber of the double-sided reciprocating electron beam evaporation coating machine, seal the vacuum chamber, and pump the vacuum step by step until the vacuum degree reaches 3×10 -3 -6×10 - 3 Pa, use electron gun to accelerate electron bombardment and collide with Al 2 O 3 raw material for evaporation, adjust the unwinding speed, rewinding speed and evaporation amount, Al 2 O 3 absorbs heat and vaporizes, in the moving film A layer of Al 2 O 3 coating is formed on the surface, that is, the adhesion enhancement layer; S2.将S1得到的镀Al2O3膜置入双面往返蒸发镀膜机真空室内，将真空室密封，逐级抽真空至真空度达到4×10-2-6×10-2Pa，将蒸发机构升温至1300℃-1400℃，然后再把铝送至蒸发机构上,调整好放卷速度、收卷速度和蒸发量，铝在蒸发机构中持续熔化、蒸发，在移动的薄膜表面形成一层镀铝层，即铝金属镀层；S2. Put the Al 2 O 3 film obtained in S1 into the vacuum chamber of the double-sided reciprocating evaporation coating machine, seal the vacuum chamber, and gradually evacuate until the vacuum degree reaches 4 × 10 -2 -6 × 10 -2 Pa. The evaporation mechanism is heated to 1300℃-1400℃, and then the aluminum is sent to the evaporation mechanism, and the unwinding speed, the winding speed and the evaporation amount are adjusted. The aluminum continues to melt and evaporate in the evaporation mechanism. Aluminized layer, that is, aluminum metal coating; S3.将S2得到的镀铝膜置入镀膜机真空室内，将真空室密封，逐级抽真空至真空度达到3×10-3-6×10-3Pa，采用电子枪加速电子轰击碰撞蒸镀原料Al2O3，调整好放卷速度、收卷速度和蒸发量，Al2O3吸热气化，在移动的薄膜表面形成一层Al2O3镀层，即防氧化层。S3. Put the aluminized film obtained in S2 into the vacuum chamber of the coating machine, seal the vacuum chamber, and step-by-step vacuumize until the vacuum degree reaches 3×10 -3 -6×10 -3 Pa, and use an electron gun to accelerate electron bombardment collision evaporation The raw material Al 2 O 3 is adjusted to the unwinding speed, the winding speed and the evaporation amount, and the Al 2 O 3 absorbs heat and vaporizes, forming a layer of Al 2 O 3 coating on the surface of the moving film, that is, an anti-oxidation layer. 9.一种电池，其特征在于，包括根据权利要求1-7中任一项所述的正极集流体。9. A battery, characterized by comprising the positive electrode current collector according to any one of claims 1-7.
CN201710243721.9A 2017-04-14 2017-04-14 A positive electrode current collector, its preparation method and its application Active CN107123812B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710243721.9A CN107123812B (en) 2017-04-14 2017-04-14 A positive electrode current collector, its preparation method and its application

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710243721.9A CN107123812B (en) 2017-04-14 2017-04-14 A positive electrode current collector, its preparation method and its application

Publications (2)

Publication Number Publication Date
CN107123812A CN107123812A (en) 2017-09-01
CN107123812B true CN107123812B (en) 2020-05-19

Family

ID=59724681

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710243721.9A Active CN107123812B (en) 2017-04-14 2017-04-14 A positive electrode current collector, its preparation method and its application

Country Status (1)

Country Link
CN (1) CN107123812B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4138161A4 (en) * 2020-08-11 2024-05-22 Zhuhai CosMX Battery Co., Ltd. CURRENT COLLECTOR, MANUFACTURING METHOD AND APPLICATION THEREOF

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109873165B (en) 2017-12-05 2021-07-06 宁德时代新能源科技股份有限公司 A current collector, its pole piece and battery
CN109873161B (en) 2017-12-05 2021-07-30 宁德时代新能源科技股份有限公司 a battery
US10749184B2 (en) 2017-12-05 2020-08-18 Contemporary Amperex Technology Co., Limited Battery
CN109873166B (en) 2017-12-05 2021-06-29 宁德时代新能源科技股份有限公司 A current collector, its pole piece and electrochemical device
CN109873164B (en) 2017-12-05 2021-08-20 宁德时代新能源科技股份有限公司 A current collector, its pole piece and electrochemical device
CN109873160B (en) 2017-12-05 2021-05-18 宁德时代新能源科技股份有限公司 A current collector, its pole piece and battery
CN108336357A (en) * 2017-12-14 2018-07-27 合肥国轩高科动力能源有限公司 A kind of current collector of ultra-light lithium ion battery and preparation method thereof
CN108531876A (en) * 2018-03-26 2018-09-14 安徽金美新材料科技有限公司 A kind of coating process flow for lithium battery collector
CN108550783A (en) * 2018-05-24 2018-09-18 银隆新能源股份有限公司 A kind of preparation method of collector, battery and collector
CN110661000B (en) * 2018-09-30 2020-11-27 宁德时代新能源科技股份有限公司 A current collector, pole piece and electrochemical device
JP7378838B2 (en) * 2018-11-09 2023-11-14 星耀科技（深▲せん▼）有限公司 Current collector of energy storage element and method for manufacturing current collector of energy storage element
CN110660957B (en) 2018-12-29 2020-12-04 宁德时代新能源科技股份有限公司 An electrode pole piece and electrochemical device
CN110660963B (en) 2018-12-29 2021-04-27 宁德时代新能源科技股份有限公司 An electrode pole piece and electrochemical device
CN110676460B (en) 2018-12-29 2022-01-18 宁德时代新能源科技股份有限公司 Electrode plate and electrochemical device
CN110661002B (en) 2018-12-29 2021-06-29 宁德时代新能源科技股份有限公司 Electrode plate and electrochemical device
CN111477876A (en) * 2019-01-24 2020-07-31 东丽先端材料研究开发（中国）有限公司 Multilayer film, current collector, pole piece and battery
CN109881152B (en) * 2019-03-05 2023-04-28 深圳市烈变科技有限公司 Conductive film with multilayer structure and preparation process thereof
CN110943200B (en) 2019-04-15 2021-03-09 宁德时代新能源科技股份有限公司 An electrode pole piece and electrochemical device
CN110943201B (en) * 2019-04-15 2021-02-26 宁德时代新能源科技股份有限公司 A positive electrode plate and electrochemical device
CN110943222B (en) 2019-04-15 2021-01-12 宁德时代新能源科技股份有限公司 Electrode plate and electrochemical device
CN112133925B (en) * 2019-04-26 2021-10-26 宁德时代新能源科技股份有限公司 Battery, electric automobile and consumer electronics
CN110943226B (en) 2019-04-28 2020-11-17 宁德时代新能源科技股份有限公司 Positive current collector, positive pole piece and electrochemical device
CN110943225B (en) * 2019-04-28 2020-11-24 宁德时代新能源科技股份有限公司 Positive electrode current collector, positive electrode plate and electrochemical device
CN113363500B (en) * 2019-05-31 2024-04-30 宁德时代新能源科技股份有限公司 Positive electrode current collector, positive electrode sheet, electrochemical device, and electric vehicle and electronic product containing the electrochemical device
CN110943215B (en) 2019-05-31 2020-12-04 宁德时代新能源科技股份有限公司 Lithium-ion secondary battery
CN111180737B (en) 2019-05-31 2021-08-03 宁德时代新能源科技股份有限公司 Lithium-ion secondary battery, cell and negative electrode
CN111180665A (en) 2019-06-28 2020-05-19 宁德时代新能源科技股份有限公司 An electrode pole piece and electrochemical device
CN112186197B (en) * 2019-07-01 2024-06-18 宁德时代新能源科技股份有限公司 Positive electrode current collector, positive electrode sheet and electrochemical device
CN111020521A (en) * 2019-11-26 2020-04-17 浙江长宇新材料有限公司 Preparation method of metal-plated film for battery
CN110885964A (en) * 2019-11-26 2020-03-17 浙江长宇新材料有限公司 One-time evaporation preparation method of metal-plated film for battery
KR102424631B1 (en) 2019-12-24 2022-07-25 주식회사 유앤에스에너지 Current collector for positive electrodes
CN113991121A (en) * 2020-01-03 2022-01-28 深圳市海鸿新能源技术有限公司 Positive electrode current collector and preparation method thereof, positive electrode sheet, battery cell and battery
CN111276701B (en) * 2020-03-11 2021-06-08 荆门市诺维英新材料科技有限公司 A kind of current collector and lithium ion battery containing the same
CN114075655B (en) * 2020-08-22 2024-01-12 昆山鑫美源电子科技有限公司 Conductive film, method for producing conductive film, current collecting and transmitting material, and energy storage device
CN112151806A (en) * 2020-09-15 2020-12-29 浙江长宇新材料有限公司 Ultra-light multilayer composite current collector and preparation method thereof
CN112117029B (en) * 2020-09-30 2022-08-09 浙江长宇新材料股份有限公司 Composite conductive film and preparation method thereof
EP4170758A4 (en) 2021-08-31 2023-09-06 Contemporary Amperex Technology Co., Limited Lithium-ion battery, battery module, battery pack, and electrical device
CN114015994A (en) * 2021-11-03 2022-02-08 合肥国轩高科动力能源有限公司 Preparation method of ultrathin composite current collector
CN116706079A (en) * 2022-02-25 2023-09-05 福建金石能源有限公司 A kind of positive electrode current collector of lithium battery and preparation method thereof
CN116742006B (en) * 2022-03-03 2026-01-16 福建省金石能源股份有限公司 Composite current collector of lithium battery and manufacturing method thereof
CN114792807B (en) * 2022-04-20 2023-10-27 江阴纳力新材料科技有限公司 Positive electrode lithium-rich composite current collector and preparation method thereof
CN114843521B (en) * 2022-04-25 2023-10-24 江阴纳力新材料科技有限公司 Composite current collector, preparation method thereof, electrode plate and secondary battery
CN116536630B (en) * 2023-05-08 2025-04-15 江苏亨通铜铝箔新材料研究院有限公司 Composite conductive film, preparation process and application thereof
CN117577855A (en) * 2024-01-17 2024-02-20 苏州可川电子科技股份有限公司 A low sheet resistance composite current collector and its preparation method and application

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1669163A (en) * 2002-08-29 2005-09-14 东洋钢钣株式会社 Composite current collector
CN103326029A (en) * 2013-06-07 2013-09-25 深圳市海太阳实业有限公司 Negative electrode sheet, positive electrode sheet, and lithium ion battery
CN104321915A (en) * 2012-04-17 2015-01-28 株式会社Lg化学 Method for producing electrode for lithium secondary battery and electrode produced using same
CN105762366A (en) * 2016-05-04 2016-07-13 江苏深苏电子科技有限公司 Composite current collector of lithium ion battery and manufacturing method of composite current collector
CN205508941U (en) * 2016-03-25 2016-08-24 江苏富朗特新能源有限公司 Positive negative pole of lithium ion battery that has insulating layer is extremely rolled up

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1669163A (en) * 2002-08-29 2005-09-14 东洋钢钣株式会社 Composite current collector
CN104321915A (en) * 2012-04-17 2015-01-28 株式会社Lg化学 Method for producing electrode for lithium secondary battery and electrode produced using same
CN103326029A (en) * 2013-06-07 2013-09-25 深圳市海太阳实业有限公司 Negative electrode sheet, positive electrode sheet, and lithium ion battery
CN205508941U (en) * 2016-03-25 2016-08-24 江苏富朗特新能源有限公司 Positive negative pole of lithium ion battery that has insulating layer is extremely rolled up
CN105762366A (en) * 2016-05-04 2016-07-13 江苏深苏电子科技有限公司 Composite current collector of lithium ion battery and manufacturing method of composite current collector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4138161A4 (en) * 2020-08-11 2024-05-22 Zhuhai CosMX Battery Co., Ltd. CURRENT COLLECTOR, MANUFACTURING METHOD AND APPLICATION THEREOF

Also Published As

Publication number Publication date
CN107123812A (en) 2017-09-01

Similar Documents

Publication Publication Date Title
CN107123812B (en) A positive electrode current collector, its preparation method and its application
CN107369810B (en) A kind of negative electrode current collector, its preparation method and its application
CN107154499B (en) A lithium battery containing current collector and preparation method thereof
US10770731B2 (en) Positive electrode current collector and preparation method and use thereof
US12427543B2 (en) Membranes, separators, batteries, and methods
CN112151806A (en) Ultra-light multilayer composite current collector and preparation method thereof
JP7217663B2 (en) Lithium electrode manufacturing apparatus and method
CN101821877A (en) Preparation method for preventing deformation of jelly-roll type electrode assembly
JP5810249B1 (en) Electrolytic copper foil, negative electrode for lithium ion secondary battery, lithium ion secondary battery, printed wiring board, and electromagnetic shielding material
CN106062995A (en) Electrode protection using a composite comprising an electrolyte-inhibiting ion conductor
CN102576855A (en) Stripping systems for electrochemical cells
CN108787747B (en) A kind of preparation method of ultra-thin lithium foil
JPH10172531A (en) Porous film and battery separator
WO2005119830A1 (en) Exterior cladding thin-film for alkali battery and thin air battery utilizing the same
CN105552250B (en) External packaging materials for electrical storage equipment and electrical storage equipment
KR20160037488A (en) Cathode unit, manufacturing method thereof and removing method of protection film
KR101829172B1 (en) Cathode unit, manufacturing method thereof and removing method of protection film
WO2020093395A1 (en) Film and preparation process
KR20090092108A (en) Laminate sheet for secondary battery package and secondary battery employed with the same
KR101363008B1 (en) Pouch for secondary battery and secondary battery using the same
JP5294428B2 (en) Method for producing polymer battery packaging material
JP5948893B2 (en) Battery case packaging and non-aqueous electrolyte secondary battery
JP2014101441A (en) Method for manufacturing a metallized porous sheet and laminate including a metallized porous sheet
CN112701293B (en) Lithium composite electrode and its preparation method and application
CN115871290B (en) Lithium-carbon composite belt and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20171116

Address after: 232200 Shouxian County Xinqiao International Industrial Park on the east side of Xinqiao Road, Huainan City, Anhui

Applicant after: ANHUI JINMEI NEW MATERIAL TECHNOLOGY Co.,Ltd.

Address before: 232000 Huainan City, Anhui, Huainan City, Xinqiao International Industrial Park on the east side of new bridge, the north side of the happy avenue Chuang Kai Tech Park, No. 3 R & D building

Applicant before: ANHUI ZHONGZHI JINGU ENERGY TECHNOLOGY Co.,Ltd.

TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20181123

Address after: 352100 Xingang Road, Zhangwan Town, Jiaocheng District, Ningde, Fujian 2

Applicant after: Contemporary Amperex Technology Co.,Ltd.

Address before: 232200 East Side of Xinqiao Avenue, Shouxian International Industrial Park, Huainan City, Anhui Province

Applicant before: ANHUI JINMEI NEW MATERIAL TECHNOLOGY Co.,Ltd.

GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20221117

Address after: 352100 Xingang Road, Zhangwan Town, Jiaocheng District, Ningde, Fujian 2

Patentee after: Contemporary Amperex Technology Co.,Ltd.

Patentee after: Chongqing Jinmei New Material Technology Co.,Ltd.

Address before: 352100 Xingang Road, Zhangwan Town, Jiaocheng District, Ningde, Fujian 2

Patentee before: Contemporary Amperex Technology Co.,Ltd.