CN108682788A - A kind of flexibility electrode of lithium cell - Google Patents

A kind of flexibility electrode of lithium cell Download PDF

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Publication number
CN108682788A
CN108682788A CN201810282703.6A CN201810282703A CN108682788A CN 108682788 A CN108682788 A CN 108682788A CN 201810282703 A CN201810282703 A CN 201810282703A CN 108682788 A CN108682788 A CN 108682788A
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CN
China
Prior art keywords
electrode
collector
lithium cell
flexible
coated
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
CN201810282703.6A
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Chinese (zh)
Inventor
马留可
许涛
李慧
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.)
Hefei Gotion High Tech Power Energy Co Ltd
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Hefei Guoxuan High Tech Power Energy Co Ltd
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Priority to CN201810282703.6A priority Critical patent/CN108682788A/en
Publication of CN108682788A publication Critical patent/CN108682788A/en
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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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • 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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/134—Electrodes based on metals, Si or alloys
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • 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
    • 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
    • H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
    • 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
    • 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
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/80—Porous plates, e.g. sintered carriers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • 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

Abstract

The invention discloses a kind of flexible electrode of lithium cell, including collector, lug and electrode material, electrode material to be coated in collection liquid surface, and tab welding is at collector edge.Collector is flexible conductive film, and flexible conductive film includes plastic film, is coated on the coat of metal of Plastic film surface and is coated on the conductive coating of metal coating surface.The present invention has lower surface density, is easy to bending, broken belt problem of the improvement collector in processes such as coating, roll-ins, collector contains micropore, can be connected to both sides active material, increases electron channel, pole piece resistance is reduced, pole piece compacting and cohesive force is improved, promotes lithium battery performance；By in collector edge soldering polar ear, can be made into multi pole ears or full lug battery core, by ultrasonic welding mode connecting tab and external circuit, solve the problems, such as that the lug of flexible current-collecting body is drawn.

Description

A kind of flexibility electrode of lithium cell
Technical field
The present invention relates to electrode of lithium cell technical field more particularly to a kind of flexible electrode of lithium cell.
Background technology
Lithium ion battery has energy density high, has extended cycle life, the characteristics such as memory-less effect, in 3C electronic products, storage The fields such as energy, electric vehicle are widely used.With the extensive use of lithium battery, people are close to the safety of lithium battery and energy More stringent requirements are proposed for degree.
The common collector of lithium battery is metal foil or painting carbon metal foil.Plus plate current-collecting body is aluminium foil or painting carbon aluminium Foil, aluminum foil thickness are 9-15 μm, and negative current collector is mainly copper foil or applies carbon copper foil, and copper thickness is 6-9 μm.In order to improve electricity Pond energy density need to reduce collector surface density, use thin metal collector, porous metals collector or composite current collector.It is thin Metal collector and porous metals collector, flexibility is low, and brittleness is big, in the processes poor processability such as coating, roll-in, is easy Broken belt influences production efficiency, increases material loss and cost.Composite current collector by the polymer plastic bed of material and surface metal-plated The compositions such as layer, conductive layer, surface density is low, can improve battery core energy density, and machining property is good, can significantly improve coating, roller Press the broken belt problem in process.But composite current collector middle layer be high molecule plastic, non-conductive, both sides metal layer electronic isolation, And the coat of metal is very thin, can not be welded using normal welding mode, draws lug, limits it and applied in lithium battery.
Invention content
Technical problems based on background technology, the present invention propose a kind of flexible electrode of lithium cell, have lower Surface density, is easy to bending, improves collector in the broken belt problem of the processes such as coating, roll-in, collector contains micropore, can be connected to Both sides active material increases electron channel, reduces pole piece resistance, improves pole piece compacting and cohesive force, promotes lithium battery performance；It is logical It crosses in collector edge soldering polar ear, can be made into multi pole ears or full lug battery core, by ultrasonic welding mode connecting tab and outside Circuit solves the problems, such as that the lug of flexible current-collecting body is drawn.
The present invention provides a kind of flexible electrode of lithium cell, including collector, lug and electrode material, electrode material coatings In collection liquid surface, tab welding is at collector edge.
Preferably, collector is flexible conductive film, and flexible conductive film includes plastic film, is coated on plastic film table The coat of metal in face and the conductive coating for being coated on metal coating surface.
Preferably, plastic film is microporous barrier, and thickness is 2-10 μm, and aperture is 10-300 μm, porosity 0-30%.
Preferably, plastic film material is polyethylene terephthalate, polyvinyl chloride, polypropylene or polyimides.
Preferably, the coat of metal is one or both of aluminium, copper, nickel.
Preferably, metal layer thickness is 0.5-3 μm.
Preferably, conductive coating is one kind in conductive carbon black, electrically conductive graphite, carbon nano-fiber, carbon nanotube, graphene Or two kinds.
Preferably, conductive coating thickness is 0.2-2 μm.
Preferably, lug material is one or both of aluminium, copper, nickel.
Preferably, when electrode material is positive electrode, then electrode material activity substance is LiFePO4, nickel cobalt mangaic acid Lithium, nickel cobalt lithium aluminate or LiMn2O4；When electrode material be negative material when, then electrode material activity substance be graphite, silicon-carbon or Lithium titanate.
The present invention uses flexible conductive film for collector, can improve the flexibility and processing performance of electrode, improves and applies The broken belt problem of the processes such as cloth, roll-in reduces electrode quality, promotes battery energy density；Collector contains micropore, can be connected to Both sides active material increases electron channel, reduces pole piece resistance, improves pole piece compacting and cohesive force, promotes lithium battery safety etc. Performance；By in collector continuous edge formula soldering polar ear, can be made into multi pole ears or full lug battery core, passing through ultrasonic welding mode Connecting tab and external circuit solve the problems, such as that the lug of flexible current-collecting body is drawn.
Description of the drawings
Fig. 1 is a kind of flexible electrode of lithium cell structural schematic diagram proposed by the present invention.
Wherein, 1 is micropore polyethylene terephthalate film, and 2 be aluminium coat, and 3 be conductive carbon black coating, and 4 be electrode Material, 5 be collector hole, and 6 be tab welding region, and 7 be aluminum lug.
Specific implementation mode
In the following, technical scheme of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of flexibility electrode of lithium cell, including collector, lug and electrode material, electrode material are coated in afflux body surface Face, tab welding is at collector edge.
Embodiment 2
A kind of flexibility electrode of lithium cell, including collector, lug and electrode material, electrode material are coated in afflux body surface Face, tab welding is at collector edge.
Collector is flexible conductive film, and flexible conductive film includes plastic film, is coated on the gold of Plastic film surface Belong to coating and is coated on the conductive coating of metal coating surface.
Embodiment 3
As shown in FIG. 1, FIG. 1 is a kind of flexible electrode of lithium cell structural schematic diagrams proposed by the present invention.
Referring to Fig.1, a kind of flexible electrode of lithium cell proposed by the present invention, including collector, thickness are 12 μm of aluminum pole Ear 7 and electrode material 4, electrode material are coated in collection liquid surface, and tab welding is at collector edge.Collector is compliant conductive Film, flexible conductive film include micropore polyethylene terephthalate film 1, are coated on micropore polyethylene terephthalate The aluminium coat 2 and be coated on the conductive carbon black coating 3 that the thickness on aluminium coat surface is 1.5 μm that the thickness of ester film surface is 1 μm.
The thickness of micropore polyethylene terephthalate film is 8 μm, and aperture is 50 μm, porosity 5%.
Electrode material is positive electrode, and active material is LiFePO4.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (10)

1. a kind of flexibility electrode of lithium cell, which is characterized in that including collector, lug and electrode material, electrode material is coated in Collection liquid surface, tab welding is at collector edge.
2. flexible electrode of lithium cell according to claim 1, which is characterized in that collector is flexible conductive film, and flexibility is led Conductive film includes plastic film, is coated on the coat of metal of Plastic film surface and is coated on the conductive painting of metal coating surface Layer.
3. flexible electrode of lithium cell according to claim 2, which is characterized in that plastic film is microporous barrier, and thickness is 2-10 μ M, aperture are 10-300 μm, porosity 0-30%.
4. according to flexible electrode of lithium cell described in Claims 2 or 3, which is characterized in that plastic film material is poly- terephthaldehyde Sour glycol ester, polyvinyl chloride, polypropylene or polyimides.
5. according to any one of the claim 2-4 flexible electrode of lithium cell, which is characterized in that the coat of metal is in aluminium, copper, nickel One or two.
6. according to any one of the claim 2-5 flexible electrode of lithium cell, which is characterized in that metal layer thickness is 0.5-3 μ m。
7. according to any one of the claim 2-6 flexible electrode of lithium cell, which is characterized in that conductive coating be conductive carbon black, One or both of electrically conductive graphite, carbon nano-fiber, carbon nanotube, graphene.
8. according to any one of the claim 2-7 flexible electrode of lithium cell, which is characterized in that conductive coating thickness is 0.2-2 μ m。
9. according to any one of the claim 1-8 flexible electrode of lithium cell, which is characterized in that lug material is in aluminium, copper, nickel One or two.
10. according to any one of the claim 1-9 flexible electrode of lithium cell, which is characterized in that when electrode material is positive material When material, then electrode material activity substance is LiFePO4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate or LiMn2O4；When electrode material is When negative material, then electrode material activity substance is graphite, silicon-carbon or lithium titanate.
CN201810282703.6A 2018-04-02 2018-04-02 A kind of flexibility electrode of lithium cell Pending CN108682788A (en)

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Cited By (24)

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CN110344237A (en) * 2019-06-25 2019-10-18 广东工业大学 A kind of conducing composite material and the preparation method and application thereof
CN110600673A (en) * 2019-08-30 2019-12-20 长沙锂安能电子科技有限公司 Manufacturing method and manufacturing equipment of double-sided coating integrated three-dimensional base material
CN110936010A (en) * 2019-10-25 2020-03-31 合肥国轩高科动力能源有限公司 Method for welding composite current collector tabs of lithium battery
CN111048787A (en) * 2019-12-11 2020-04-21 合肥国轩高科动力能源有限公司 Manufacturing method of flexible composite current collector
CN111180664A (en) * 2019-06-28 2020-05-19 宁德时代新能源科技股份有限公司 Electrode plate and electrochemical device
CN111180666A (en) * 2019-06-28 2020-05-19 宁德时代新能源科技股份有限公司 Electrode plate and electrochemical device
CN111769289A (en) * 2020-06-18 2020-10-13 合肥国轩高科动力能源有限公司 Welding method of flexible current collector
CN111883777A (en) * 2020-07-28 2020-11-03 合肥国轩高科动力能源有限公司 Composite current collector, preparation method thereof and lithium battery pole piece
CN112072117A (en) * 2019-06-10 2020-12-11 柏弥兰金属化研究股份有限公司 Current collector and electrode structure for lithium battery
CN112133883A (en) * 2020-09-24 2020-12-25 湖南省凯纳方科技有限公司 Porous structure lithium battery negative electrode and preparation method thereof
WO2020258810A1 (en) * 2019-06-28 2020-12-30 宁德时代新能源科技股份有限公司 Electrode sheet, electrochemical device, and device thereof
WO2021000546A1 (en) * 2019-07-01 2021-01-07 宁德时代新能源科技股份有限公司 Positive pole piece, electrochemical device, and device
CN112490596A (en) * 2020-12-10 2021-03-12 厦门海辰新能源科技有限公司 Battery cell, preparation method thereof and single battery
CN112563512A (en) * 2020-12-10 2021-03-26 湖北亿纬动力有限公司 Electrode current collector and preparation method and application thereof
CN112909443A (en) * 2021-03-26 2021-06-04 厦门海辰新能源科技有限公司 Tab assembly, preparation method thereof and battery cell
CN113054162A (en) * 2021-03-15 2021-06-29 蜻蜓实验室(深圳)有限公司 Lithium ion battery and lithium ion battery pack
CN113066955A (en) * 2021-03-11 2021-07-02 珠海冠宇电池股份有限公司 Electrode plate and application thereof
CN113328134A (en) * 2021-05-31 2021-08-31 珠海冠宇电池股份有限公司 Battery with a battery cell
CN113422066A (en) * 2021-06-30 2021-09-21 蜻蜓实验室(深圳)有限公司 Current collector, electrode plate and lithium ion battery
WO2021184162A1 (en) * 2020-03-16 2021-09-23 宁德新能源科技有限公司 Electrode plate, cell, and electrochemical device
CN113745512A (en) * 2020-05-29 2021-12-03 财团法人工业技术研究院 Lithium ion battery, electrode of lithium ion battery and electrode material
CN114373936A (en) * 2021-12-13 2022-04-19 苏州蔚利昆新能源科技有限公司 Current collector
CN114497911A (en) * 2022-01-25 2022-05-13 厦门海辰新能源科技有限公司 Pole piece and lithium ion battery
CN114709424A (en) * 2022-04-21 2022-07-05 合肥国轩高科动力能源有限公司 Method for manufacturing low-resistance current collector

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CN112072117A (en) * 2019-06-10 2020-12-11 柏弥兰金属化研究股份有限公司 Current collector and electrode structure for lithium battery
CN110344237A (en) * 2019-06-25 2019-10-18 广东工业大学 A kind of conducing composite material and the preparation method and application thereof
WO2020258810A1 (en) * 2019-06-28 2020-12-30 宁德时代新能源科技股份有限公司 Electrode sheet, electrochemical device, and device thereof
JP7430737B2 (en) 2019-06-28 2024-02-13 寧徳時代新能源科技股▲分▼有限公司 Electrode sheets, electrochemical devices and their devices
CN111180664A (en) * 2019-06-28 2020-05-19 宁德时代新能源科技股份有限公司 Electrode plate and electrochemical device
CN111180666A (en) * 2019-06-28 2020-05-19 宁德时代新能源科技股份有限公司 Electrode plate and electrochemical device
CN111180666B (en) * 2019-06-28 2021-12-24 宁德时代新能源科技股份有限公司 Electrode plate and electrochemical device
CN111180664B (en) * 2019-06-28 2022-03-15 宁德时代新能源科技股份有限公司 Electrode plate and electrochemical device
US11611064B2 (en) 2019-06-28 2023-03-21 Contemporary Amperex Technology Co., Limited Electrode plate having relatively thin conductive layer, electrochemical apparatus, and apparatus thereof
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WO2020258809A1 (en) * 2019-06-28 2020-12-30 宁德时代新能源科技股份有限公司 Electrode pole piece, electrochemical device
US11804604B2 (en) 2019-07-01 2023-10-31 Contemporary Amperex Technology Co., Limited Positive electrode piece in a battery, electrochemical device and apparatus
WO2021000546A1 (en) * 2019-07-01 2021-01-07 宁德时代新能源科技股份有限公司 Positive pole piece, electrochemical device, and device
CN110600673B (en) * 2019-08-30 2021-07-09 吴达红 Manufacturing method and manufacturing equipment of double-sided coating integrated three-dimensional base material
CN110600673A (en) * 2019-08-30 2019-12-20 长沙锂安能电子科技有限公司 Manufacturing method and manufacturing equipment of double-sided coating integrated three-dimensional base material
CN110936010B (en) * 2019-10-25 2021-12-14 合肥国轩高科动力能源有限公司 Method for welding composite current collector tabs of lithium battery
CN110936010A (en) * 2019-10-25 2020-03-31 合肥国轩高科动力能源有限公司 Method for welding composite current collector tabs of lithium battery
CN111048787A (en) * 2019-12-11 2020-04-21 合肥国轩高科动力能源有限公司 Manufacturing method of flexible composite current collector
CN114223095A (en) * 2020-03-16 2022-03-22 宁德新能源科技有限公司 Electrode pole piece, battery cell and electrochemical device
WO2021184162A1 (en) * 2020-03-16 2021-09-23 宁德新能源科技有限公司 Electrode plate, cell, and electrochemical device
CN113745512A (en) * 2020-05-29 2021-12-03 财团法人工业技术研究院 Lithium ion battery, electrode of lithium ion battery and electrode material
CN111769289A (en) * 2020-06-18 2020-10-13 合肥国轩高科动力能源有限公司 Welding method of flexible current collector
CN111883777A (en) * 2020-07-28 2020-11-03 合肥国轩高科动力能源有限公司 Composite current collector, preparation method thereof and lithium battery pole piece
CN112133883A (en) * 2020-09-24 2020-12-25 湖南省凯纳方科技有限公司 Porous structure lithium battery negative electrode and preparation method thereof
CN112490596B (en) * 2020-12-10 2023-05-30 厦门海辰储能科技股份有限公司 Battery cell, preparation method thereof and single cell
CN112490596A (en) * 2020-12-10 2021-03-12 厦门海辰新能源科技有限公司 Battery cell, preparation method thereof and single battery
CN112563512A (en) * 2020-12-10 2021-03-26 湖北亿纬动力有限公司 Electrode current collector and preparation method and application thereof
CN113066955A (en) * 2021-03-11 2021-07-02 珠海冠宇电池股份有限公司 Electrode plate and application thereof
CN113066955B (en) * 2021-03-11 2024-02-13 珠海冠宇电池股份有限公司 Electrode slice and application thereof
CN113054162A (en) * 2021-03-15 2021-06-29 蜻蜓实验室(深圳)有限公司 Lithium ion battery and lithium ion battery pack
CN112909443A (en) * 2021-03-26 2021-06-04 厦门海辰新能源科技有限公司 Tab assembly, preparation method thereof and battery cell
CN113328134A (en) * 2021-05-31 2021-08-31 珠海冠宇电池股份有限公司 Battery with a battery cell
CN113422066B (en) * 2021-06-30 2023-03-14 蜻蜓实验室(深圳)有限公司 Current collector, electrode plate and lithium ion battery
CN113422066A (en) * 2021-06-30 2021-09-21 蜻蜓实验室(深圳)有限公司 Current collector, electrode plate and lithium ion battery
CN114373936A (en) * 2021-12-13 2022-04-19 苏州蔚利昆新能源科技有限公司 Current collector
CN114373936B (en) * 2021-12-13 2024-03-01 苏州蔚利昆新能源科技有限公司 Current collector
CN114497911B (en) * 2022-01-25 2023-04-25 厦门海辰储能科技股份有限公司 Pole piece and lithium ion battery
CN114497911A (en) * 2022-01-25 2022-05-13 厦门海辰新能源科技有限公司 Pole piece and lithium ion battery
CN114709424A (en) * 2022-04-21 2022-07-05 合肥国轩高科动力能源有限公司 Method for manufacturing low-resistance current collector

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