CN112802997B - Lithium metal battery with curved surface lithium piece negative pole - Google Patents
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- CN112802997B CN112802997B CN202110204662.0A CN202110204662A CN112802997B CN 112802997 B CN112802997 B CN 112802997B CN 202110204662 A CN202110204662 A CN 202110204662A CN 112802997 B CN112802997 B CN 112802997B
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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
- H01M4/134—Electrodes based on metals, Si or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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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
- H01M2004/025—Electrodes composed of, or comprising, active material with shapes other than plane or cylindrical
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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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
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- 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
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- 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
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Abstract
The invention relates to a lithium metal battery with a curved surface lithium piece cathode, which comprises a battery shell, wherein a diaphragm is arranged in the battery shell, two ends of the diaphragm are respectively connected to the middle part of the battery shell, a first containing cavity is arranged between the diaphragm and one end of the battery shell, a second containing cavity is arranged between the diaphragm and the other end of the battery shell, an electrode piece is arranged in the first containing cavity and is abutted against one end of the battery shell, a battery cathode is arranged in the second containing cavity, two ends of the battery cathode are respectively abutted against the diaphragm and the other end of the battery shell, the battery cathode is made of a curved surface lithium piece, electrolyte is filled in the first containing cavity and the second containing cavity, and the electrode piece and the battery cathode are respectively soaked in the electrolyte. The curved surface lithium piece has extended the area of battery negative pole SEI membrane, has effectively reduced dendrite growth, and the SEI membrane is difficult for breaking. The electrolyte can be always kept to be soaked, the electrochemical reaction kinetics is enhanced, the lithium ion migration path is increased, the battery capacity and the cycle efficiency of the lithium metal battery are favorably maintained, and the service life is prolonged.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a lithium metal battery with a curved surface lithium sheet cathode.
Background
The consumer electronics field, the new energy automobile field and the energy storage field have higher and higher requirements on the capacity, the service life and the safety of the lithium battery, and the lithium battery with high capacity, long service life and high safety has high demand and is urgent.
Currently, metallic lithium is considered as the optimal solution for lithium secondary batteries due to its high theoretical specific capacity (3860mAh/g), the most negative electronegativity of all metals. Therefore, the lithium metal battery has been widely used in various fields.
However, the lithium metal battery of the related art has the following technical problems: lithium metal pulverization or dendritic crystal is easy to occur, so that the low coulombic efficiency and the battery capacity of the lithium battery are reduced, the cycle efficiency is reduced, and the service life is prolonged.
Therefore, there is an urgent need to develop a lithium metal battery capable of suppressing lithium dendrites, preventing negative electrode lithium metal from being pulverized, and improving cycle stability of the lithium battery.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to: the lithium metal battery with the curved-surface lithium piece negative electrode can inhibit growth of lithium dendrites, prevent negative electrode lithium metal pulverization, improve cycle stability of the lithium battery and prolong service life.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a lithium metal battery with curved surface lithium piece negative pole, including battery case, be equipped with the diaphragm in the battery case, the diaphragm both ends are connected respectively in the battery case middle part, be equipped with first appearance chamber between diaphragm and the battery case one end, be equipped with the second between diaphragm and the battery case other end and hold the chamber, first appearance intracavity is equipped with the electrode slice, the electrode slice butt is in battery case one end, the second holds the intracavity and is equipped with the battery negative pole, the butt is in the diaphragm and the battery case other end respectively at battery negative pole both ends, the battery negative pole is made by curved surface lithium piece, first appearance chamber and second hold the intracavity and all fill there is electrolyte, electrode slice and battery negative pole soak respectively in electrolyte.
Furthermore, an elastic device is arranged on the battery cathode, and two ends of the elastic device are respectively abutted against the battery cathode and the other end of the battery shell.
Furthermore, the elastic device is a spring sheet.
Furthermore, a gasket is arranged between the elastic sheet and the battery cathode, and two ends of the gasket are respectively abutted against the elastic sheet and the battery cathode.
Further, the electrode sheet is made of a curved lithium sheet.
Furthermore, the curved surface lithium piece includes a plurality of depressed parts, and the height of depressed part is less than 10 mm.
Further, the preparation method of the curved-surface lithium sheet is that the flat-surface lithium sheet is subjected to curved-surface construction in a stamping and rolling mode.
Further, the preparation method of the curved lithium sheet comprises the following steps,
preparing a curved surface die in the shape of a required curved surface lithium sheet;
sequentially paving a polypropylene film and a curved surface mould on the surface of the planar lithium sheet, and clamping the curved surface mould, the polypropylene film and the planar lithium sheet by using a clamp;
pressing the flat lithium sheet on a curved surface die by a pressurizing device to form a curved surface which is the same as that of the curved surface die;
and taking out the curved surface die and the polypropylene film to obtain the required curved surface lithium sheet.
Further, the curved surface mold is manufactured by a 3D printing method.
Further, the 3D printing of the curved mold comprises the following steps,
modeling the required curved surface lithium sheet by using modeling software to obtain a curved surface model;
slicing the curved surface model by using slicing software to obtain a plurality of slice pictures;
and printing the plurality of slice pictures layer by layer to obtain the curved surface die.
In summary, the present invention has the following advantages:
because curved surface lithium piece itself possesses certain camber, in lithium nucleation in-process, the SEI membrane area that leads to when the uplift lithium core with the SEI membrane changes and diminishes, is difficult for the bursting to effectively prevented the SEI membrane and cracked, curved surface lithium piece's curved surface has effectively extended the area of battery negative pole SEI membrane, has effectively reduced the puncture to the SEI membrane that dendritic crystal growth, volume increase lead to, and the SEI membrane is difficult for bursting. And because the contact of the curved surface lithium sheet and the diaphragm is line contact, the concave part of the curved surface lithium sheet becomes an area for effectively storing the electrolyte, and the electrolyte can still be always kept to be soaked even after the lithium metal battery is cycled for a certain number of times. The curved surface lithium sheet increases the effective surface area of the battery cathode, enhances the electrochemical reaction kinetics, increases the lithium ion migration path, is beneficial to maintaining the battery capacity and the cycle efficiency of the lithium metal battery, and prolongs the service life.
Drawings
Fig. 1 is a schematic view of an assembly of a lithium iron phosphate half cell in example 1.
Fig. 2 is a discharge specific capacity and coulombic efficiency curve diagram of the lithium iron phosphate half-cell in example 1, in which the curved lithium plate and the planar lithium plate are used as the negative electrode of the cell, respectively, under a 2C condition.
Fig. 3 is a graph showing the cycle voltage of the lithium symmetrical battery in example 2 using the curved lithium plate and the flat lithium plate as the electrode tab and the negative electrode of the battery.
Description of reference numerals:
1-electrode plate, 2-battery shell, 3-gasket, 4-shrapnel, 5-battery cathode, 6-diaphragm and 7-electrolyte.
Detailed Description
The present invention will be described in further detail below.
Example 1
As shown in fig. 1, a lithium metal battery with curved surface lithium sheet negative electrode, including battery case 2, be equipped with diaphragm 6 in battery case 2, diaphragm 6 both ends are connected respectively in battery case 2 middle part, be equipped with first appearance chamber between diaphragm 6 and the 2 one end of battery case, be equipped with the second between diaphragm 6 and the 2 other ends of battery case and hold the chamber, first appearance intracavity is equipped with electrode slice 1, electrode slice 1 butt in battery case 2 one end, the second holds intracavity and is equipped with battery negative electrode 5, 5 both ends of battery negative electrode butt respectively in diaphragm 6 and the 2 other ends of battery case, battery negative electrode 5 is made by curved surface lithium sheet, first appearance chamber and second hold the intracavity and all fill electrolyte 7, electrode slice 1 and battery negative electrode 5 soak in electrolyte 7 respectively.
In the embodiment, lithium iron phosphate is used as an active material of the electrode plate 1 (the surface density is 14.5 mg/cm)2). When the lithium metal battery discharges, the battery cathode 5 made of the curved-surface lithium sheet starts to remove lithium, lithium ions enter the electrolyte 7 through the diaphragm 6 and then contact with active substances on the electrode plate 1 to generate lithium intercalation reaction; at the same time, electrons enter one end of the battery case 2 from the other end of the battery case 2; since the electrode tab 1 abuts against one end of the battery case 2, electrons then enter into the active material of the electrode tab 1 to neutralize the charges with lithium ions, thereby completing the discharging process of the lithium metal battery. When the lithium metal battery is charged, lithium ions are firstly separated from active substances on an electrode plate 1, enter an electrolyte 7 and then contact a curved surface lithium sheet through a diaphragm 6; electrons are transferred from the active material on the electrode plate 1 and pass through one end of the battery shell 2, the other end of the battery shell 2 and the lithium on the curved lithium plate in sequenceAnd (5) balancing the charge of the ions to finish the charging process.
The improvement of the stability of the lithium metal negative electrode is a key research direction for ensuring the technical development of the lithium battery. Applicants have uniquely discovered that the primary reason prior art lithium metal batteries produce rapid growth of lithium dendrites and reduced performance of lithium metal batteries is because they employ a planar lithium sheet as the battery negative electrode 5.
Since metallic lithium has high reactivity, a solid electrolyte interface film (SEI film) formed in a conventional liquid electrolyte is unstable, and thus, the capacity, cycle efficiency, and lifetime of a battery are easily reduced. On the other hand, in the charge and discharge cycle of the lithium battery, deposition and stripping can be continuously generated on the lithium cathode, so that large volume change is generated, lithium metal pulverization or dendritic crystal is easily caused, and further, the low coulombic efficiency and the capacity reduction of the lithium battery are caused.
Specifically, in the discharging process of the lithium metal battery in the prior art, the planar lithium sheet cathode loses electrons, lithium ions nucleate on the surface of the planar lithium sheet cathode, the SEI film on the planar lithium sheet is the same plane, and the SEI film can be burst after lithium nucleation, so that cracks are generated on the SEI film, and the lithium ions continue to deposit on the cracks, so that the lithium dendrites grow rapidly. Meanwhile, because the contact between the planar lithium sheet and the diaphragm 6 is planar contact, after the lithium metal battery is cycled for a certain number of times, nucleation and dendritic crystal growth are carried out on the planar lithium sheet, so that certain positions on the planar lithium sheet are not soaked by the electrolyte 7 any more, and the performance of the lithium metal battery is reduced.
In order to solve the technical problems, the curved-surface lithium sheet is creatively adopted as the battery cathode 5, and the curved-surface lithium sheet has a certain curvature, so that the SEI film area change is reduced and the SEI film is not easy to rupture when the rising lithium nuclei jack up the SEI film in the lithium nucleation process, thereby effectively preventing the SEI film from rupturing, effectively extending the SEI film area of the battery cathode 5 by the curved surface of the curved-surface lithium sheet, effectively reducing the puncture on the SEI film caused by dendritic crystal growth and volume increase, and preventing the SEI film from rupturing. Moreover, since the curved-surface lithium sheet is in line contact with the diaphragm 6, the concave part of the curved-surface lithium sheet becomes an area for effectively storing the electrolyte 7, and the electrolyte 7 can be always kept wet even after the lithium metal battery is cycled for a certain number of times. The curved surface lithium sheet increases the effective surface area of the battery cathode 5, enhances the electrochemical reaction kinetics, increases the lithium ion migration path, is beneficial to maintaining the battery capacity and the cycle efficiency of the lithium metal battery, and prolongs the service life.
The lithium metal battery having a curved lithium plate negative electrode of the present example was subjected to a cycle performance test using the LAND CT2001A battery test system.
As can be seen from FIG. 2, after the lithium metal battery based on the curved-surface lithium sheet battery cathode 5 is cycled for 40 times at a rate of 2C, the reversible capacity of the lithium metal battery can still reach 86.1mAh g-1The capacity retention rate exceeds 81.5%. Under the same conditions, the reversible capacity of the lithium metal battery based on the planar lithium sheet battery cathode 5 is only 74.9mAh g-1The capacity retention was only 71.4%. The test result shows that the curved surface lithium sheet greatly improves the capacity retention rate and the cycling stability of the lithium metal battery, can inhibit lithium dendrite, prevent negative lithium metal from being pulverized, and improve the cycling stability of the lithium battery, so that the cycle life of the lithium metal battery is prolonged.
Through the experiment, the lithium iron phosphate half-cell based on the curved surface lithium sheet cell cathode 5 has better superiority and effectiveness compared with the lithium iron phosphate half-cell based on the plane lithium sheet cell cathode 5.
Furthermore, an elastic device is arranged on the battery cathode 5, and two ends of the elastic device are respectively abutted against the battery cathode 5 and the other end of the battery shell 2.
The elastic means is an electrical conductor which is in close contact with the battery negative electrode 5 and the battery case 2, ensuring good electrical conductivity inside the lithium metal battery.
Preferably, the elastic means is a spring plate 4.
A gasket 3 is arranged between the elastic sheet 4 and the battery cathode 5, and two ends of the gasket 3 are respectively abutted against the elastic sheet 4 and the battery cathode 5.
The gasket 3 increases the contact area between the elastic sheet 4 and the battery cathode 5, and is beneficial to maintaining good conductivity inside the lithium metal battery.
The height of the curved surface lithium sheet is less than 10 mm.
Specifically, the curved surface of the curved-surface lithium sheet is in a three-dimensional space coordinate system, the O is used as an original point, the x axis and the y axis are used as two axes of the bottom surface, the z axis is used as a vertical axis perpendicular to the bottom surface, the numeric range of the z direction is limited to be [ -5mm, 5mm ], and the numeric range of the x axis and the y axis is any real value, and the unit is millimeter (any space curved surface except the plane).
Example 2
The present embodiment is different from embodiment 1 in that: the electrode plate 1 is made of a curved lithium plate. Namely, the electrode plate 1 and the battery cathode 5 of the lithium symmetrical battery are both made of curved lithium plates.
The lithium symmetric battery of the present example was subjected to a constant current cycle performance test using the LAND CT2001A battery test system.
As can be seen from FIG. 3, the lithium symmetrical battery using curved lithium sheets for both the electrode sheet 1 and the battery cathode 5 is at 3mA/cm2Current density of 1mAh/cm2The polarization voltage of the electrode was only 0.16V after cycling for about 900000 seconds at the deposition capacity of (1). Under the same condition, the polarization voltage of the lithium symmetric battery based on the planar lithium sheet reaches 0.16V after about 340000 seconds of circulation, the polarization voltage continuously increases in subsequent circulation, the polarization voltage reaches 0.38V after about 560000 seconds of circulation, the diaphragm 6 is punctured by overgrown dendrites, local short circuit is caused, and then the disordered polarization voltage in the subsequent circulation is caused. The result shows that the curved-surface lithium plate effectively inhibits the growth of lithium dendrites of the lithium symmetrical battery and reduces the polarization voltage.
Through the experiments, the battery based on the curved-surface lithium plate battery cathode 5 has longer service life and higher safety compared with the battery based on the common plane lithium plate.
Example 3
The preparation method of the curved-surface lithium sheet comprises the step of carrying out curved-surface construction on a plane lithium sheet in a stamping and rolling mode.
Alternatively, the method for preparing the curved lithium sheet comprises the following steps,
preparing a curved surface die in the shape of a required curved surface lithium sheet; sequentially paving a polypropylene film and a curved surface mould on the surface of the planar lithium sheet, and clamping the curved surface mould, the polypropylene film and the planar lithium sheet by using a clamp; pressing the flat lithium sheet on a curved surface die by a pressurizing device to form a curved surface which is the same as that of the curved surface die; and taking out the curved surface die and the polypropylene film to obtain the required curved surface lithium sheet.
Specifically, a layer of polypropylene film is laid on the surface of a plane lithium sheet and placed in the center of a jaw of a precision drilling jig, and then a curved surface mold is aligned with the plane lithium sheet and placed above the plane lithium sheet. And rotating the handle of the precision drilling machine clamp forward to pressurize the clamped object at the jaw to complete the pressing action, and then rotating the handle of the precision drilling machine clamp reversely to take out the clamped object and take out the curved surface lithium plate.
The polypropylene film is arranged between the curved surface die and the planar lithium sheet, so that after pressing is completed, the curved surface die and the curved surface lithium sheet are easy to separate and cannot be adhered together.
Optionally, the curved mold is manufactured using a 3D printing method.
The 3D printing of a curved mold comprises the following steps,
modeling the required curved surface lithium sheet by using modeling software to obtain a curved surface model;
slicing the curved surface model by using slicing software to obtain a plurality of slice pictures;
and printing the plurality of slice pictures layer by layer to obtain the curved surface die.
Specifically, modeling is performed by using modeling software Solidworks, and output is in stp format. And slicing the curved surface model according to the printing setting by using slicing software, and outputting a slice picture in the png format. And (5) setting parameters of the DLP printer to print the slices layer by layer to obtain the curved surface die.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A lithium metal battery having a curved lithium sheet negative electrode, characterized by: the battery comprises a battery shell, wherein a diaphragm is arranged in the battery shell, two ends of the diaphragm are respectively connected to the middle part of the battery shell, a first containing cavity is arranged between the diaphragm and one end of the battery shell, a second containing cavity is arranged between the diaphragm and the other end of the battery shell, an electrode plate is arranged in the first containing cavity and is abutted to one end of the battery shell, a battery cathode is arranged in the second containing cavity, two ends of the battery cathode are respectively abutted to the other ends of the diaphragm and the battery shell, the battery cathode is made of curved-surface lithium plates, electrolyte is filled in the first containing cavity and the second containing cavity, and the electrode plate and the battery cathode are respectively soaked in the electrolyte;
the curved surface of the curved surface lithium sheet is in a three-dimensional space coordinate system, the O is used as an original point, the x axis and the y axis are used as two bottom surfaces, the z axis is used as a vertical axis vertical to the bottom surface, the value range in the z direction is limited to +/-5 mm, and the value range of the x axis and the y axis is any real value and the unit is millimeter.
2. A lithium metal battery having a curved lithium plate negative electrode according to claim 1, wherein: the battery cathode is provided with an elastic device, and two ends of the elastic device are respectively abutted against the battery cathode and the other end of the battery shell.
3. A lithium metal battery having a curved lithium plate negative electrode according to claim 2, wherein: the elastic device is a spring plate.
4. A lithium metal battery having a curved lithium plate negative electrode according to claim 3, wherein: a gasket is arranged between the elastic sheet and the battery cathode, and two ends of the gasket are respectively abutted against the elastic sheet and the battery cathode.
5. A lithium metal battery having a curved lithium plate negative electrode according to claim 1, wherein: the electrode plate is made of a curved lithium plate.
6. A lithium metal battery having a curved lithium plate negative electrode according to any one of claims 1 to 5, wherein: the curved surface lithium piece includes a plurality of depressed parts, and the height of depressed part is less than 10 mm.
7. The lithium metal battery of claim 6 having a curved lithium sheet negative electrode, wherein: the preparation method of the curved-surface lithium sheet comprises the step of carrying out curved-surface construction on a plane lithium sheet in a stamping and rolling mode.
8. The lithium metal battery of claim 6 having a curved lithium sheet negative electrode, wherein: the preparation method of the curved-surface lithium plate comprises the following steps,
preparing a curved surface die in the shape of a required curved surface lithium sheet;
sequentially paving a polypropylene film and a curved surface mould on the surface of the planar lithium sheet, and clamping the curved surface mould, the polypropylene film and the planar lithium sheet by using a clamp;
pressing the flat lithium sheet on a curved surface die by a pressurizing device to form a curved surface which is the same as that of the curved surface die;
and taking out the curved surface die and the polypropylene film to obtain the required curved surface lithium sheet.
9. A lithium metal battery having a curved lithium plate negative electrode according to claim 8, wherein: the curved surface mold is manufactured by a 3D printing method.
10. A lithium metal battery having a curved lithium plate negative electrode according to claim 9, wherein: the 3D printing of a curved mold comprises the following steps,
modeling the required curved surface lithium sheet by using modeling software to obtain a curved surface model;
slicing the curved surface model by using slicing software to obtain a plurality of slice pictures;
and printing the plurality of slice pictures layer by layer to obtain the curved surface die.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110204662.0A CN112802997B (en) | 2021-02-24 | 2021-02-24 | Lithium metal battery with curved surface lithium piece negative pole |
| PCT/CN2021/122172 WO2022179107A1 (en) | 2021-02-24 | 2021-09-30 | Lithium metal battery having curved lithium sheet negative electrode |
| JP2023513411A JP7523833B2 (en) | 2021-02-24 | 2021-09-30 | Lithium metal battery with curved lithium sheet negative electrode and method of manufacture thereof |
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| CN202110204662.0A CN112802997B (en) | 2021-02-24 | 2021-02-24 | Lithium metal battery with curved surface lithium piece negative pole |
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| CN112802997B true CN112802997B (en) | 2022-05-24 |
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| CN101290987A (en) * | 2008-06-05 | 2008-10-22 | 天津中能锂业有限公司 | Minus pole of coin type lithium battery, preparing method thereof and coin type lithium battery comprising the minus pole |
| CN112072076A (en) * | 2020-07-22 | 2020-12-11 | 宁波大学 | Modification method for surface of negative electrode of lithium metal battery |
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| CN105552348B (en) * | 2015-11-23 | 2018-03-30 | 天津赫维科技有限公司 | A kind of 3V can fill the preparation method of button lithium battery lithium-aluminium alloy negative pole |
| WO2017110684A1 (en) | 2015-12-22 | 2017-06-29 | 日本電気株式会社 | Secondary cell and method for manufacturing same |
| CN205900693U (en) * | 2016-07-14 | 2017-01-18 | 深圳市盛邦科技有限公司 | Negative pole piece and all solid state battery |
| US11031584B2 (en) | 2017-05-18 | 2021-06-08 | Panasonic Intellectual Property Management Co., Ltd. | Lithium secondary battery including lithium metal as negative electrode active material |
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| CN108574083A (en) * | 2018-05-02 | 2018-09-25 | 南方科技大学 | Lithium sheet capable of effectively inhibiting uncontrolled growth of dendritic crystal of lithium metal battery, and preparation method and application thereof |
| CN108847474B (en) * | 2018-06-26 | 2021-06-08 | 桑顿新能源科技有限公司 | Micro-textured negative plate for pre-supplementing lithium and preparation method thereof |
| CN110854436B (en) * | 2019-11-28 | 2021-11-30 | 广东工业大学 | Secondary lithium metal battery electrolyte and preparation method thereof |
| CN112802997B (en) * | 2021-02-24 | 2022-05-24 | 华南理工大学 | Lithium metal battery with curved surface lithium piece negative pole |
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- 2021-02-24 CN CN202110204662.0A patent/CN112802997B/en active Active
- 2021-09-30 WO PCT/CN2021/122172 patent/WO2022179107A1/en active Application Filing
- 2021-09-30 JP JP2023513411A patent/JP7523833B2/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101290987A (en) * | 2008-06-05 | 2008-10-22 | 天津中能锂业有限公司 | Minus pole of coin type lithium battery, preparing method thereof and coin type lithium battery comprising the minus pole |
| CN112072076A (en) * | 2020-07-22 | 2020-12-11 | 宁波大学 | Modification method for surface of negative electrode of lithium metal battery |
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| JP7523833B2 (en) | 2024-07-29 |
| JP2023538778A (en) | 2023-09-11 |
| CN112802997A (en) | 2021-05-14 |
| WO2022179107A1 (en) | 2022-09-01 |
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