CN108574083A - Lithium sheet capable of effectively inhibiting uncontrolled growth of dendritic crystal of lithium metal battery, and preparation method and application thereof - Google Patents
Lithium sheet capable of effectively inhibiting uncontrolled growth of dendritic crystal of lithium metal battery, and preparation method and application thereof Download PDFInfo
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 106
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 230000002401 inhibitory effect Effects 0.000 title abstract description 4
- 239000013078 crystal Substances 0.000 title abstract 3
- 230000004222 uncontrolled growth Effects 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 36
- 239000002086 nanomaterial Substances 0.000 claims abstract description 24
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 50
- 229910052759 nickel Inorganic materials 0.000 claims description 25
- 238000007747 plating Methods 0.000 claims description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229920002120 photoresistant polymer Polymers 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- 230000000737 periodic effect Effects 0.000 claims description 6
- 238000005566 electron beam evaporation Methods 0.000 claims description 5
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 5
- 238000004528 spin coating Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 210000001787 dendrite Anatomy 0.000 description 13
- 230000000694 effects Effects 0.000 description 5
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001312 dry etching Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
-
- 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
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0433—Molding
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The invention discloses a lithium sheet for effectively inhibiting the uncontrollable growth of dendritic crystals of a lithium metal battery, a preparation method and application thereof, and belongs to the technical field of batteries. The invention provides a lithium sheet with a novel structure, which is provided with a concave structure, such as a pit structure and/or a groove structure, in particular to a pit and/or a groove with a micro-nano structure. The lithium sheet with the specific structure is used as a negative electrode, so that the uncontrollable growth of dendritic crystals of the lithium metal battery can be effectively inhibited, the phenomenon of puncturing a battery diaphragm is avoided, and the performance of the lithium battery is improved. The invention adopts the nano-imprinting technology, in particular to the reel-to-reel nano-imprinting lithium metal battery cathode, and can realize large-scale industrialized mass production; the micro-nano processing technology adopted by the invention has mature and stable process, can realize accurate control of the dimension of the graph, and can manufacture patterns from nano level to micron level.
Description
Technical field
The invention belongs to battery technology fields, are related to a kind of effective lithium for inhibiting the uncontrollable growth of lithium metal battery dendrite
Piece, preparation method and the usage.
Background technology
Currently, it is to be commercialized an important pursuit side of lithium battery industry long-run development to improve lithium ion battery energy density
To, however, its theoretical capacity only has 372mAh/g due to current commercialized graphite cathode, the application of battery is limited,
It is investigated according to latest scientific research, there are many more negative materials such as silicon, tin, transition-metal oxide etc. may be used to substitution at present
Commercialized graphite cathode.
Other than these above-mentioned materials, lithium metal is based on a very promising high-energy density cathode in lithium battery
Material, because its theoretical capacity is up to 3860mAh/g, and there are one very low oxidation-reduction potential (relative standard's hydrogen
Electrode is -3.04V), therefore lithium metal is meeting electric vehicle and advanced electronic equipment for growing new application
To playing key effect in the demand of high energy density cells.However, lithium metal battery is during charge and discharge cycles, Li dendrite
Formation along with low coulombic efficiency hinder lithium an- ode for can charge-discharge lithium battery practical application.Especially,
The dead lithium that the generation of Li dendrite is generated with it, which may result in, the safety problems such as there is thermal runaway or even burns or explode.
According in recent years studies have shown that by applying one layer of LiF, or addition polymerization vulcanization in the electrolytic solution on lithium metal
Object, LiNO3、Cs+, ionic liquid etc., using 3D collector combination macromolecule electrolytes, the method for bionic can improve lithium
SEI (solid electrolyte interphase) film of metal surface etc..
Techniques described above, the improvement degree to uncontrollable lithium dendrite growth are very limited, they cannot be large-scale
Applied to high-throughput industrialized production.
In short, uncontrollable Li dendrite problem is to develop the rechargeable lithium battery based on lithium an- ode to be badly in need of asking for solution
Topic.The prior art there are no it is a kind of can large-scale application in high-throughput industrialized production method to solve the problems, such as this, this is tight
The development and application of lithium battery are limited again.
Invention content
For the above-mentioned problems in the prior art, effectively inhibiting lithium metal electricity the purpose of the present invention is to provide a kind of
The lithium piece of the uncontrollable growth of pond dendrite, preparation method and the usage.Can have as cathode by using the lithium piece of specific structure
Effect inhibits the uncontrollable growth of lithium metal battery dendrite.
In order to achieve the above object, the present invention uses following technical scheme：
In a first aspect, the present invention provides a kind of lithium piece, the lithium piece is the lithium piece with sunk structure.
Preferably, the sunk structure includes bowl configurations and/or groove structure." pit and/or the groove " refers to：It can
It can also be groove structure to be bowl configurations, can also be the combination of bowl configurations and groove structure.
The sunk structure of the present invention includes but not limited to bowl configurations and/or groove structure, other rules or irregular
Sunk structure be also applied for the present invention, the groove can be that straight trough can also be forniciform slot, and the pit can be
Horizontal cross-section is circular pit (referred to as circular pit) or horizontal for rectangular pit (referred to as rectangular pit), horizontal cross-section
Section is pit (referred to as oblong pits) of ellipse etc..
Preferably, the bowl configurations and/or groove structure are micro-nano structure figure.By making lithium piece form micro-nano figure
Case can preferably achieve the effect that inhibit lithium dendrite growth.
Preferably, the micro-nano structure figure is the periodic pattern of rule.For example, can be individual micro-nano knot
The periodic pattern of structure pit formation, each pit is regularly arranged, and has certain spacing；It can also be individual micro-nano knot
The periodic pattern that structure groove is formed, each groove is regularly arranged, and has certain spacing；Can also be micro-nano structure pit and
The systematicness figure that micro-nano structure groove common combination is formed.
Preferably, the thickness of the lithium piece be 0.5mm~1mm, such as 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.85mm,
0.9mm or 1mm etc..
Preferably, the depth of the pit and/or groove be 50nm~100 μm, such as 50nm, 75nm, 80nm, 100nm,
115nm、130nm、160nm、200nm、235nm、270nm、300nm、350nm、400nm、450nm、500nm、550nm、
600nm、650nm、700nm、750nm、800nm、850nm、900nm、1μm、2μm、3μm、4μm、5μm、6μm、6.5μm、7μm、8
μm, 10 μm, 15 μm, 20 μm, 35 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm or 100 μm etc., preferably 5 μm~15 μm, herein
In 5 μm~15 μ ms, the space of pit and/or groove receiving lithium is more suitable.
Preferably, the depth of the pit and/or groove is 1/10~1 times of minimum feature, for example, 1/10,1/9,1/8,
1/7.5,1/7,1/6,1/5,1/4,1/3,1/2 or 1 etc., within this range, pit and/or groove structure manufacture difficulty are lower,
Lithium is easier to deposit in the form of closelypacked.
" minimum feature " of the present invention refers to：In the plane with the depth vertical direction institute of pit and/or groove, it passes through flat
2 points of the minimum range at face center.For example, for the groove of a strip, minimum feature refer to the width direction of strip away from
From；For a rectangular pit, the distance on minimum feature finger beam side；For a square pit, minimum feature refers to
The distance of the length of side；For an oval pit, minimum feature refers to the distance of oval short side.
Second aspect, the present invention provide the purposes of lithium piece as described in relation to the first aspect, and the lithium piece is used as cathode.
The third aspect, the present invention provide the preparation method of lithium piece as described in relation to the first aspect, the method includes：Using gold
Belong to template and roll-to-roll coining or plate are carried out to plate coining to lithium piece, preferably roll-to-roll nano impression or plate are in plate nano impression
Any one.
The present invention imprints plate by roll-to-roll coining or plate, and the micro-nano structure of metal form is transferred to cathode lithium piece
On, so as to form the cathode lithium piece with micro-nano structure, can effectively inhibit the growth of Li dendrite in lithium metal battery with
And the phenomenon that piercing through battery diaphragm, improve the performance of lithium battery.
As the optimal technical scheme of the method for the invention, the method includes：
(1) metal form is prepared；
The hardness of the metal form is more than the hardness of lithium piece；
The metal form is the figure with bulge-structure, and so that lithium piece surface is formed sunk structure after imprinting lithium piece；
(2) in anhydrous and oxygen-free environment, plate coining is patterned lithium piece by roll-to-roll coining or plate, makes lithium piece
With sunk structure.
Preferably, pit and/or groove are formed in the lithium piece.
Preferably, the pit and/or groove are micro-nano structure figure.
Preferably, the micro-nano structure figure is the periodic pattern of rule.
Preferably, step (1) described metal form is nickel template.
Preferably, the preparation method of the nickel template is：
(A) photoresist is coated on silicon chip, is exposed using the figure on mask plate, and finally develop micro-nano pattern；
(B) photoresist is removed, the nickel seed layer of one layer of 50nm~100nm is then formed；
(C) plating thickens, and demoulding obtains nickel template.
In this optimal technical scheme, the thickness of step (B) the nickel seed layer is 50nm~100nm, such as 50nm,
60nm, 70nm, 80nm, 85nm, 90nm or 100nm etc..
Preferably, step (A) described silicon chip is the silicon chip cleaned up.
Preferably, the method for step (A) described coating is spin coating.
Preferably, step (B) method for forming nickel seed layer is magnetron sputtering or electron beam evaporation plating.
As the further preferred technical solution of the method for the invention, the method includes：Plate is imprinted by plate, it will
The micro-nano structure of nickel template is transferred in cathode lithium piece.More specifically, including：
The spin coating photoresist first on clean silicon chip, is formed using the figure on mask plate, to produce micro-nano figure
Case；
ICP dry etchings remove photoresist；
Then make seed layer with the nickel of 50~100nm of magnetron sputtering or electron beam evaporation plating plating last layer, then with plating
Method thickens, and nickel template is made in finally demoulding；
The nickel template made is subjected to figure to plate nano impression by plate in the environment of anhydrous and oxygen-free in lithium piece
Change, to obtain that there is the lithium piece of micro-nano pattern.
As the another optimal technical scheme of the method for the invention, plate is only replaced with into roll-to-roll receive to plate nano impression
Rice coining, other methods are identical as aforementioned further preferred technical solution, and the roll-to-roll simple schematic diagram of nano impression is referring to Fig. 3.
The third aspect, the present invention provide a kind of lithium metal battery, and the lithium metal battery includes the lithium described in first aspect
Piece is as cathode.
The present invention provides a kind of lithium metal battery, the cathode of the battery is the cathode described in first aspect, further includes just
The components such as pole, diaphragm, electrolyte and battery case.
Compared with the prior art, the present invention has the advantages that：
(1) present invention is by lithium piece by being made specific out-of-flatness surface, with sunk structure (such as with pit or recessed
The structures such as slot), it can effectively control the free growth problem of lithium metal battery dendrite.
In battery charge and discharge process, lithium preferential deposition is at out-of-flatness depression in the surface, such as pit (such as micro-nano knot
Structure pit) and/or groove, this provides space for the growth of Li dendrite, to effectively inhibit lithium branch in lithium metal battery
The growth of crystalline substance avoids the phenomenon that piercing through battery diaphragm, improves the performance of lithium battery.
(2) present invention uses nanometer embossing, especially roll-to-roll nano impression lithium metal battery cathode may be implemented
Heavy industrialization volume production, and figure stability regular, figure large specific surface area, figure are not likely to produce defect.
(3) the micro-nano technology technology that uses of the present invention, technical maturity is stable, it can be achieved that dimension of picture accurately controls, from
The pattern of nanoscale to micron level can make.
Description of the drawings
Fig. 1 is the process flow chart that embodiment 1 prepares plate imprint process using plate the lithium piece with micro-nano structure.
Fig. 2 is the product effect figure for the lithium piece with micro-nano structure that embodiment 1 is prepared plate imprint process using plate.
Fig. 3 is simple schematic diagram of the embodiment 4 using roll-to-roll imprint process.
Fig. 4 is the SEM image of the lithium piece with micro-nano structure of embodiment 1.
Fig. 5 a and Fig. 5 b are the SEM image after the cathode lithium piece lithium deposition with micro-nano structure of embodiment 1, wherein
Fig. 5 b are the enlarged drawing of dotted line frame region in Fig. 5 a.
Specific implementation mode
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
Embodiment 1
The present embodiment provides a kind of preparation methods of the lithium piece with micro-nano structure, including：Plate is imprinted by plate, by nickel
The micro-nano structure of template is transferred in cathode lithium piece.More specifically, including (technological process is referring to Fig. 1)：
The spin coating photoresist first on clean silicon chip, is formed using the figure on mask plate, to produce micro-nano figure
Case；
ICP dry etchings remove photoresist；
Then the nickel seed layer for using magnetron sputtering or electron beam evaporation plating plating last layer 100nm, is then increased with electric plating method
Nickel template is made in thickness, finally demoulding；
The nickel template made is subjected to figure to plate nano impression by plate in the environment of anhydrous and oxygen-free in lithium piece
Change, to obtain the lithium piece (lithium piece product effect figure is referring to Fig. 2) with micro-nano pattern.
Embodiment 2
In addition to the thickness of nickel seed layer is 50nm, other methods and condition are same as Example 1.
Embodiment 3
In addition to the thickness of nickel seed layer is 75nm, other methods and condition are same as Example 1.
Embodiment 4
The present embodiment provides a kind of preparation methods of the lithium piece with micro-nano structure, including：By roll-to-roll coining, by nickel
The micro-nano structure of template is transferred in cathode lithium piece.More specifically, including：
The spin coating photoresist first on clean silicon chip, is formed using the figure on mask plate, to produce micro-nano figure
Case；
ICP dry etchings remove photoresist；
Then the nickel seed layer for using magnetron sputtering or electron beam evaporation plating plating last layer 100nm, is then increased with electric plating method
Nickel template is made in thickness, finally demoulding；
The nickel template made is subjected to figure by roll-to-roll nano impression in the environment of anhydrous and oxygen-free in lithium piece
Change, to obtain that there is the lithium piece of micro-nano pattern.
The present embodiment 4 is using the simple schematic diagram of roll-to-roll imprint process referring to Fig. 3.
Fig. 4 is the SEM image of the lithium piece with micro-nano structure of embodiment 1, as seen from the figure, after micro-nano technology
Lithium piece there is the square groove pattern being evenly distributed, the Quad Sides of square groove grow about 5 μm, depth about 50nm,
And there is certain spacing between groove.
Fig. 5 a and Fig. 5 b are dressed up for the cathode lithium piece with micro-nano structure of embodiment 1 after one fixing turn of circulating battery
SEM image, wherein Fig. 5 b are the enlarged drawing of dotted line frame region in Fig. 5 a, and lithium preferential deposition exists it can be seen from Fig. 5 a and Fig. 5 b
Square pattern bottom and cell wall, and adhere in fine granularity, any dendritic crystalline lithium is not generated, and micro-nano technology pattern is not
Have because generating big variation after circulating battery, lithium metal is nearly all deposited on inside pattern slot after each circulating battery, is said
Lithium piece after bright micro-nano technology can effectively inhibit the Li dendrite caused by local current densities are excessive and break through asking for SEI films
Topic, the application for lithium metal battery of new generation provide a kind of possibility.
Applicant states that the present invention illustrates the method detailed of the present invention, but the present invention not office by above-described embodiment
It is limited to above-mentioned method detailed, that is, does not mean that the present invention has to rely on above-mentioned method detailed and could implement.Technical field
Technical staff it will be clearly understood that any improvement in the present invention, equivalence replacement and auxiliary element to each raw material of product of the present invention
Addition, the selection etc. of concrete mode, all fall within protection scope of the present invention and the open scope.
Claims (10)
1. a kind of lithium piece, which is characterized in that the lithium piece is the lithium piece with sunk structure.
2. lithium piece according to claim 1, which is characterized in that the sunk structure includes bowl configurations and/or groove knot
Structure；
Preferably, the bowl configurations and/or groove structure are micro-nano structure figure；
Preferably, the micro-nano structure figure is the periodic pattern of rule.
3. lithium piece according to claim 1 or 2, which is characterized in that the thickness of the lithium piece is 0.5mm~1mm；
Preferably, the depth of the pit and/or groove be 50nm~100 μm, preferably 5 μm~15 μm；
Preferably, the depth of the pit and/or groove is 1/10~1 times of minimum feature.
4. the purposes of lithium piece as described in claim any one of 1-3, which is characterized in that the lithium piece is used as cathode.
5. the preparation method of lithium piece as described in any one of claims 1-3, which is characterized in that the method includes：Using gold
Belong to template and roll-to-roll coining or plate are carried out to plate coining to lithium piece, the coining is preferably nano impression.
6. according to the method described in claim 5, it is characterized in that, the method includes：
(1) metal form is prepared；
The hardness of the metal form is more than the hardness of lithium piece；
The metal form is the figure with bulge-structure, and so that lithium piece is formed sunk structure after imprinting lithium piece；
(2) in anhydrous and oxygen-free environment, plate coining is patterned lithium piece by roll-to-roll coining or plate, lithium piece is made to have
Sunk structure.
7. according to the method described in claim 6, it is characterized in that, the sunk structure includes pit and/or groove；
Preferably, the pit and/or groove are micro-nano structure figure；
Preferably, the micro-nano structure figure is the periodic pattern of rule.
8. the method described according to claim 6 or 7, which is characterized in that step (1) described metal form is nickel template；
Preferably, the preparation method of the nickel template is：
(A) photoresist is coated on silicon chip, is exposed using the figure on mask plate, and finally develop micro-nano pattern；
(B) photoresist is removed, the nickel seed layer of one layer of 50nm~100nm is then formed；
(C) plating thickens, and demoulding obtains nickel template.
9. according to the method described in claim 8, it is characterized in that, step (A) described silicon chip is the silicon chip cleaned up；
Preferably, the method for step (A) described coating is spin coating；
Preferably, step (B) method for forming nickel seed layer is magnetron sputtering or electron beam evaporation plating.
10. a kind of lithium metal battery, which is characterized in that the lithium metal battery includes claim 1-3 any one of them lithiums
Piece is as cathode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810409577.6A CN108574083A (en) | 2018-05-02 | 2018-05-02 | Lithium sheet capable of effectively inhibiting uncontrolled growth of dendritic crystal of lithium metal battery, and preparation method and application thereof |
| PCT/CN2018/098088 WO2019210595A1 (en) | 2018-05-02 | 2018-08-01 | Lithium sheet for effectively inhibiting uncontrolled growth of dentrite of lithium metal battery, preparation method therefor, and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810409577.6A CN108574083A (en) | 2018-05-02 | 2018-05-02 | Lithium sheet capable of effectively inhibiting uncontrolled growth of dendritic crystal of lithium metal battery, and preparation method and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108574083A true CN108574083A (en) | 2018-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810409577.6A Pending CN108574083A (en) | 2018-05-02 | 2018-05-02 | Lithium sheet capable of effectively inhibiting uncontrolled growth of dendritic crystal of lithium metal battery, and preparation method and application thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108574083A (en) |
| WO (1) | WO2019210595A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112768636A (en) * | 2020-12-31 | 2021-05-07 | 华中科技大学 | Composite lithium metal negative electrode and preparation method and application thereof |
| CN112802997A (en) * | 2021-02-24 | 2021-05-14 | 华南理工大学 | Lithium metal battery with curved surface lithium piece negative pole |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100582557B1 (en) * | 2004-11-25 | 2006-05-22 | 한국전자통신연구원 | Anode for lithium metal polymer secondary battery comprising patterned anodic current collector surface and method for forming the same |
| CN106784611B (en) * | 2016-12-07 | 2019-10-22 | 中国科学院物理研究所 | A kind of electrode and its preparation method and application for secondary cell with pit pattern |
-
2018
- 2018-05-02 CN CN201810409577.6A patent/CN108574083A/en active Pending
- 2018-08-01 WO PCT/CN2018/098088 patent/WO2019210595A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112768636A (en) * | 2020-12-31 | 2021-05-07 | 华中科技大学 | Composite lithium metal negative electrode and preparation method and application thereof |
| CN112802997A (en) * | 2021-02-24 | 2021-05-14 | 华南理工大学 | Lithium metal battery with curved surface lithium piece negative pole |
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| WO2019210595A1 (en) | 2019-11-07 |
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Application publication date: 20180925 |