CN207368085U - Porous lithium metal foil - Google Patents
Porous lithium metal foil Download PDFInfo
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- CN207368085U CN207368085U CN201721210792.0U CN201721210792U CN207368085U CN 207368085 U CN207368085 U CN 207368085U CN 201721210792 U CN201721210792 U CN 201721210792U CN 207368085 U CN207368085 U CN 207368085U
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- lithium metal
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- metal foil
- silk
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Abstract
A kind of porous lithium metal foil is the utility model is related to, it is characterized in that：Including the lithium metal net being compiled into using lithium metal silk, gap is equipped between the lithium metal silk of establishment, the compacting excessively in situ of lithium metal Netcom forms the agent structure of porous lithium metal foil.Beneficial effect：The utility model is using drawing method in situ, lithium metal net is compiled into first by lithium metal silk, lithium metal Netcom is crossed again to roll lithium net original position is pressed into porous lithium piece, the contact area of negative plate/lithium metal/electrolyte three has been lifted with equilibrium, lithium an- ode service efficiency can be effectively improved；The production process of porous lithium cathode sheet is simplified, has evaded process failure risk, contributes to the large-scale production and application of porous lithium an- ode.
Description
Technical field
The utility model belongs to technical field of lithium ion, more particularly to a kind of porous lithium metal foil.
Background technology
At present, lithium ion battery is mainly using graphite material as negative active core-shell material, still, the theoretical appearance of graphite material
Measure as 372mAh/g, for efficiency 90% or so, graphite material can not meet current volume energy density and quality energy first
The requirement that metric density improves.In addition, the cycle performance used at present, which preferably aoxidizes sub- silica-base material, has higher theoretical gram
Capacity, the theoretical capacity of silicium cathode is 4198mAh/g, and the theoretical capacity for aoxidizing sub- silicon is 1964mAh/g, still, in the industry to this
The research of class material shows, less efficient first (65%-85%) of such material.Either graphite cathode or silicium cathode,
Side reaction occurs for the course of work or formation SEI films are required for a part of lithium ion from cathode of consumption, influences positive electrode
Capacity plays.To make up the part lithium ion that side reaction or formation SEI film consumption occur for the course of work, battery core is improved first
Coulombic efficiency, need to carry out battery core pre- benefit lithium.
At present, lithium metal is considered in the industry the final solution of high energy density cells, to meet high-energy-density
The requirement of power battery security, all-solid lithium-ion battery are had an optimistic view of extensively by industry, and the theoretical specific capacity of lithium metal is
3860mAh/g, lithium metal have natural advantage as the anode of all-solid-state battery.No matter lithium metal is directly as battery core anode
Use, or mend as battery core the lithium source of lithium in advance and use, for reduction lithium metal interface impedance, it is necessary to improve electrolyte and metal
The contact area of lithium and negative electrode of lithium ion battery.
Patent document 105932295A discloses a kind of lithium metal secondary battery Porous Cu collection that can inhibit Li dendrite generation
Fluid, the porous copper current collector have the pore passage structure of connection, and pore diameter range is at 0.1-2 μm.Relative to the prior art, this three
Dimension pore structure can reduce electrode effective current density by increasing the specific surface area of electrode, so as to suppress Li dendrite generation, stablize
SEI films.And its three-D pore structure can accommodate the lithium metal of deposition, so as to slow down lithium an- ode during charge and discharge cycles
Volume change.The prior art indicate that current preparation process is seen, lithium metal is used in the form of paillon foil or powder always, such
The active area of battery preparation method or lithium metal is restricted, or the interracial contact of negative plate/lithium metal/electrolyte three is uneven
Weighing apparatus, or complex steps condition harshness are unfavorable for industrial production, more or less large-scale application for limiting lithium anode.
How the interracial contact of in battery core lithium up process negative plate/lithium metal/electrolyte three is kept, farthest hair
Pre- benefit lithium effect is waved, is always the emphasis of researcher's concern.Therefore, lithium ion field is urgently developed one kind and can be effectively improved
The novel lithium paper tinsel knot of the contact area of lithium an- ode service efficiency, lifting and balanced negative plate/lithium metal/electrolyte three
Structure.
Utility model content
The utility model is to overcome deficiency of the prior art, there is provided a kind of porous lithium metal foil, can improve
With the contact area of balanced negative plate/lithium metal/electrolyte three, the service efficiency of lithium metal can be effectively improved.
The utility model to achieve the above object, is achieved through the following technical solutions a kind of porous lithium metal foil, it is special
Sign is：Including the lithium metal net being compiled into using lithium metal silk, gap, lithium metal Netcom mistake are equipped between the lithium metal silk of establishment
Original position compacting forms the agent structure of porous lithium metal foil.
The aperture of the porous lithium metal foil agent structure is 10-2000 microns, and thickness is 10-4000 microns.
A diameter of 10 microns -2000 microns of the lithium metal silk.
The braiding structure of the lithium metal net is two-dimensional structure or three-dimensional structure.
The braiding structure of the lithium metal net is the two dimension of longitude and latitude network structure, diamond shape network structure or He Gelisi structures
Structure, or three-dimensional four-way structure, three-dimensional five are to the three-dimensional structure of structure.
Beneficial effect：Compared with prior art, the utility model is using drawing method in situ, first by lithium metal silk
Lithium metal net is compiled into, then lithium metal Netcom is crossed to roll lithium net original position is pressed into porous lithium piece, applied to based on benefit lithium skill
In the battery system of art, the contact area of negative plate/lithium metal/electrolyte three is lifted with equilibrium, lithium can be effectively improved
Metal negative electrode service efficiency, farthest plays pre- benefit lithium effect；The production process of porous lithium metal foil is simplified, is evaded
Process failure risk, contributes to the large-scale production and application of porous lithium an- ode.
Brief description of the drawings
Fig. 1 is the structure diagram of porous lithium metal foil；
Fig. 2 is the lithium web frame schematic diagram that lithium silk braiding shape is in longitude and latitude network structure.
In figure：1st, porous lithium metal foil, 2, lithium metal silk, 3, micrometer level porous, 4, lithium metal net.
Embodiment
Below in conjunction with preferred embodiment, to according to embodiment provided by the utility model, details are as follows：Refer to attached
Figure, present embodiments provides a kind of porous lithium metal foil, including the lithium metal net 4 being compiled into using lithium metal silk 2, establishment
Gap is equipped between lithium metal silk, the compacting excessively in situ of lithium metal Netcom forms the agent structure of porous lithium metal foil 1.It is described more
The aperture of hole lithium metal paillon foil agent structure is 10-2000 microns, and thickness is 10-4000 microns.The lithium metal silk is a diameter of
10 microns -2000 microns.The braiding structure of the lithium metal net is two-dimensional structure or three-dimensional structure.The braiding of the lithium metal net
Structure is the two-dimensional structure of longitude and latitude network structure, diamond shape network structure or He Gelisi structures, or three-dimensional four-way structure, three-dimensional five
To the three-dimensional structure of structure.
The preparation method of porous lithium metal foil,
(1) a diameter of 100 microns of lithium silk is chosen first, and using single lithium silk as weaving unit, adjustment lithium silk spacing is 100
Micron, longitude and latitude network structure lithium metal net (Fig. 2) is woven to by selected lithium silk；
(2) compacting excessively in situ of above-mentioned preparation lithium metal Netcom is formed into micrometer level porous 3 lithium metal paillon foil agent structure (figure
1)。
The above-mentioned detailed description carried out with reference to embodiment to a kind of porous lithium metal foil is illustrative rather than limit
Qualitatively, several embodiments can be included according to limited scope, therefore in the case where not departing from the utility model general plotting
Change and modifications, should belong within the scope of protection of the utility model.
Claims (5)
1. a kind of porous lithium metal foil, it is characterized in that：Including the lithium metal net being compiled into using lithium metal silk, the lithium gold of establishment
Gap is equipped between category silk, the compacting excessively in situ of lithium metal Netcom forms the agent structure of porous lithium metal foil.
2. porous lithium metal foil according to claim 1, it is characterized in that：The porous lithium metal foil agent structure
Aperture is 10-2000 microns, and thickness is 10-4000 microns.
3. porous lithium metal foil according to claim 1, it is characterized in that：A diameter of 10 microns of the lithium metal silk-
2000 microns.
4. porous lithium metal foil according to claim 1, it is characterized in that：The braiding structure of the lithium metal net is two dimension
Structure or three-dimensional structure.
5. the porous lithium metal foil according to claim 1 or 4, it is characterized in that：The braiding structure of the lithium metal net is
The two-dimensional structure of longitude and latitude network structure, diamond shape network structure or He Gelisi structures, or three-dimensional four-way structure, three-dimensional five are to structure
Three-dimensional structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721210792.0U CN207368085U (en) | 2017-09-21 | 2017-09-21 | Porous lithium metal foil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721210792.0U CN207368085U (en) | 2017-09-21 | 2017-09-21 | Porous lithium metal foil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207368085U true CN207368085U (en) | 2018-05-15 |
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ID=62348829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721210792.0U Active CN207368085U (en) | 2017-09-21 | 2017-09-21 | Porous lithium metal foil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207368085U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832131A (en) * | 2018-06-28 | 2018-11-16 | 清陶（昆山）新能源材料研究院有限公司 | A kind of preparation method of lithium an- ode |
| CN110556532A (en) * | 2018-06-01 | 2019-12-10 | 中能中科（天津）新能源科技有限公司 | reticular lithium material and preparation method and application thereof |
-
2017
- 2017-09-21 CN CN201721210792.0U patent/CN207368085U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556532A (en) * | 2018-06-01 | 2019-12-10 | 中能中科（天津）新能源科技有限公司 | reticular lithium material and preparation method and application thereof |
| CN108832131A (en) * | 2018-06-28 | 2018-11-16 | 清陶（昆山）新能源材料研究院有限公司 | A kind of preparation method of lithium an- ode |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230207 Address after: 300457 No. 38, Haitai South Road, Binhai high tech Industrial Development Zone (outer ring), Binhai New Area, Tianjin Patentee after: TIANJIN LISHEN BATTERY JOINT-STOCK Co.,Ltd. Patentee after: Tianjin Juyuan New Energy Technology Co.,Ltd. Address before: 300384 Tianjin Xiqing District Binhai hi tech Industrial Development Zone (outer ring) 38 Haitai South Road Patentee before: TIANJIN LISHEN BATTERY JOINT-STOCK Co.,Ltd. |