WO2024145932A1 - 负极集流体及其制备方法、负极片、二次电池及用电装置 - Google Patents
负极集流体及其制备方法、负极片、二次电池及用电装置 Download PDFInfo
- Publication number
- WO2024145932A1 WO2024145932A1 PCT/CN2023/071068 CN2023071068W WO2024145932A1 WO 2024145932 A1 WO2024145932 A1 WO 2024145932A1 CN 2023071068 W CN2023071068 W CN 2023071068W WO 2024145932 A1 WO2024145932 A1 WO 2024145932A1
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- WO
- WIPO (PCT)
- Prior art keywords
- lithium
- negative electrode
- lithium alloy
- substrate
- current collector
- 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.)
- Ceased
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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
- H01M4/13—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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
-
- 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
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0421—Methods of deposition of the material involving vapour deposition
- H01M4/0423—Physical vapour deposition
- H01M4/0426—Sputtering
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
-
- 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
- H01M4/139—Processes of manufacture
- H01M4/1395—Processes of manufacture of 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/381—Alkaline or alkaline earth metals elements
- H01M4/382—Lithium
-
- 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
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/40—Alloys based on alkali metals
- H01M4/405—Alloys based on lithium
-
- 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
- H01M4/661—Metal or alloys, e.g. alloy coatings
- H01M4/662—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
- H01M4/64—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
- H01M4/72—Grids
- H01M4/74—Meshes or woven material; Expanded metal
-
- 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
- H01M4/75—Wires, rods or strips
-
- 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
- H01M4/808—Foamed, spongy materials
-
- 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
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- 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
Definitions
- the atomic ratio of lithium is 30%-50%, and the plating amount of the lithium alloy is 2-3g/m2.
- the lithium atoms can be oxidized into lithium ions and enter the electrolyte to supplement the lithium consumed by the negative electrode of the lithium ion battery to form a solid electrolyte interphase (Solid Electrolyte Interphase, SEI), which helps to improve the quality of the solid electrolyte interphase SEI, thereby improving the secondary The first coulombic efficiency of the battery.
- Solid Electrolyte Interphase SEI
- lithium alloy is more stable to air, thereby making the performance of the secondary battery more stable.
- the matrix material includes at least one of Sn, Mg, Zn, Bi, Pb, Au, Ag, and Al Si.
- Sn, Mg, Zn, Bi, Pb, Au, Ag, and Al have good conductivity, which helps to reduce the impedance of the secondary battery and improve the first coulomb efficiency of the secondary battery.
- the matrix materials Sn, Mg, and Zn have a stable structure, they are not easy to collapse after lithium removal, thereby increasing the structural stability of the secondary battery.
- the substrate is copper foil.
- the present application provides a method for preparing the negative electrode current collector of any one of the above embodiments, comprising the following steps:
- a lithium alloy is plated on the surface of a substrate by a lithium alloy target.
- the lithium alloy includes lithium and a matrix material.
- the atomic ratio of lithium is 30%-50%, and the plating amount of the lithium alloy is 2-3g/n?, thereby preparing a negative electrode current collector.
- lithium atoms can be oxidized into lithium ions and enter the electrolyte to supplement the lithium consumed by the negative electrode of the lithium-ion battery to form a solid electrolyte interphase, which helps to improve the quality of the solid electrolyte interphase SEI, and thus improve the first coulomb efficiency of the secondary battery.
- the present application provides a negative electrode sheet, comprising the negative electrode current collector as described above or the negative electrode current collector prepared by the negative electrode current collector preparation method as described above, so as to improve the first coulombic efficiency of the secondary battery.
- the present application provides a secondary battery, comprising the negative electrode sheet as described above, to obtain a secondary battery with excellent first coulombic efficiency.
- FIG1 is a schematic diagram of alloying/dealloying potential of a lithium alloy in the related art
- FIG5 is a schematic diagram of the lithium alloy discharge platform and theoretical energy density of the negative electrode current collector in the related art.
- Battery 100 controller 200, motor 300; Box body 10, first part 11, second part 12;
- the term "and/or" is only a description of the association relationship of the associated objects, indicating that three relationships may exist.
- a and/or B may represent: A exists alone, A and B exist at the same time, and B exists alone.
- the character "/" in this document generally indicates that the associated objects before and after are in an "or" relationship.
- FIG. 3 is a schematic diagram of the exploded structure of a battery 100 provided in some embodiments of the present application.
- the battery 100 includes a box body 10 and a battery cell 20, and the battery cell 20 is accommodated in the box body 10.
- the box body 10 is used to provide a storage space for the battery cell 20, and the box body 10 can adopt a variety of structures.
- the box body 10 may include a first part 11 and a second part 12, and the first part 11 and the second part 12 cover each other, and the first part 11 and the second part 12 jointly define a storage space for accommodating the battery cell 20.
- the base material and lithium are plated on the substrate by ion sputtering, vacuum evaporation, or ion plating.
- a lithium alloy is plated on the surface of a substrate through a lithium alloy target.
- the lithium alloy includes lithium and a matrix material.
- the atomic ratio of lithium is 30%-50%, and the plating amount of the lithium alloy is 2-3g/m2.
- the present application provides an electrical device, including a secondary battery provided by any of the above solutions, and the battery is used to provide electrical energy to the electrical device.
- the substrate of the negative electrode current collector is made of commercially available foam copper with a thickness of 171pn, a porosity of 72%, and an average pore size of 165pn.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23914089.0A EP4571897A4 (en) | 2023-01-06 | 2023-01-06 | NEGATIVE ELECTRODE CURRENT COLLECTOR AND ITS PREPARATION METHOD, NEGATIVE ELECTRODE SHEET, SECONDARY BATTERY AND ELECTRICAL DEVICE |
| PCT/CN2023/071068 WO2024145932A1 (zh) | 2023-01-06 | 2023-01-06 | 负极集流体及其制备方法、负极片、二次电池及用电装置 |
| CN202380045979.1A CN119404341B (zh) | 2023-01-06 | 负极集流体及其制备方法、负极片、二次电池及用电装置 | |
| US19/092,701 US20250226384A1 (en) | 2023-01-06 | 2025-03-27 | Negative current collector and preparation method thereof, negative electrode plate, secondary battery, and electrical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2023/071068 WO2024145932A1 (zh) | 2023-01-06 | 2023-01-06 | 负极集流体及其制备方法、负极片、二次电池及用电装置 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US19/092,701 Continuation US20250226384A1 (en) | 2023-01-06 | 2025-03-27 | Negative current collector and preparation method thereof, negative electrode plate, secondary battery, and electrical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024145932A1 true WO2024145932A1 (zh) | 2024-07-11 |
Family
ID=91803375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2023/071068 Ceased WO2024145932A1 (zh) | 2023-01-06 | 2023-01-06 | 负极集流体及其制备方法、负极片、二次电池及用电装置 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20250226384A1 (zh) |
| EP (1) | EP4571897A4 (zh) |
| WO (1) | WO2024145932A1 (zh) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393979A (zh) * | 2007-09-21 | 2009-03-25 | 比亚迪股份有限公司 | 硅负极和包括该负极的锂离子二次电池及它们的制备方法 |
| CN102400100A (zh) * | 2010-09-09 | 2012-04-04 | 鸿富锦精密工业(深圳)有限公司 | 镀膜件及其制备方法 |
| CN110660967A (zh) * | 2018-06-29 | 2020-01-07 | 中能中科(天津)新能源科技有限公司 | 锂电池负极及其制备方法 |
| KR20220052952A (ko) * | 2019-08-20 | 2022-04-28 | 카네기 멜론 유니버시티 | 애노드가 없는 집전체를 구비한 리튬 금속 배터리 |
| CN114447412A (zh) * | 2020-11-06 | 2022-05-06 | 深圳市比亚迪锂电池有限公司 | 一种锂电池 |
| CN114927701A (zh) * | 2022-05-18 | 2022-08-19 | 电子科技大学 | 一种补锂集流体及其制备方法和应用 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3520921B2 (ja) * | 2001-03-27 | 2004-04-19 | 日本電気株式会社 | 二次電池用負極およびそれを用いた二次電池 |
| DE102016214399A1 (de) * | 2016-08-04 | 2018-02-08 | Bayerische Motoren Werke Aktiengesellschaft | Elektrochemische Zelle und Verfahren zur Herstellung der elektrochemischen Zelle |
| US20220285692A1 (en) * | 2019-07-24 | 2022-09-08 | Board Of Regents, The University Of Texas System | Multilayered anode and associated methods and systems |
| CN113437257A (zh) * | 2021-06-26 | 2021-09-24 | 宁德时代新能源科技股份有限公司 | 锂金属负极极片、电化学装置及电子设备 |
-
2023
- 2023-01-06 EP EP23914089.0A patent/EP4571897A4/en active Pending
- 2023-01-06 WO PCT/CN2023/071068 patent/WO2024145932A1/zh not_active Ceased
-
2025
- 2025-03-27 US US19/092,701 patent/US20250226384A1/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393979A (zh) * | 2007-09-21 | 2009-03-25 | 比亚迪股份有限公司 | 硅负极和包括该负极的锂离子二次电池及它们的制备方法 |
| CN102400100A (zh) * | 2010-09-09 | 2012-04-04 | 鸿富锦精密工业(深圳)有限公司 | 镀膜件及其制备方法 |
| CN110660967A (zh) * | 2018-06-29 | 2020-01-07 | 中能中科(天津)新能源科技有限公司 | 锂电池负极及其制备方法 |
| KR20220052952A (ko) * | 2019-08-20 | 2022-04-28 | 카네기 멜론 유니버시티 | 애노드가 없는 집전체를 구비한 리튬 금속 배터리 |
| CN114447412A (zh) * | 2020-11-06 | 2022-05-06 | 深圳市比亚迪锂电池有限公司 | 一种锂电池 |
| CN114927701A (zh) * | 2022-05-18 | 2022-08-19 | 电子科技大学 | 一种补锂集流体及其制备方法和应用 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4571897A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20250226384A1 (en) | 2025-07-10 |
| EP4571897A1 (en) | 2025-06-18 |
| EP4571897A4 (en) | 2025-12-31 |
| CN119404341A (zh) | 2025-02-07 |
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