CN207719340U - Current collector structure, lithium battery electric core and its lithium battery - Google Patents
Current collector structure, lithium battery electric core and its lithium battery Download PDFInfo
- Publication number
- CN207719340U CN207719340U CN201721785947.3U CN201721785947U CN207719340U CN 207719340 U CN207719340 U CN 207719340U CN 201721785947 U CN201721785947 U CN 201721785947U CN 207719340 U CN207719340 U CN 207719340U
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- layer
- electric core
- battery electric
- 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.)
- Active
Links
Classifications
-
- 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
-
- 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
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model is related to field of lithium, specifically include current collector structure, lithium battery electric core and its lithium battery, the wherein described collector includes two opposite main surfaces, column crystal anode layer is formed in one of main surface, using the anode structure as a lithium battery electric core.Lithium battery electric core and its lithium battery provided by the utility model are connected in series or in parallel between can realizing multiple lithium battery electric cores.By the way that positive and negative anodes are arranged on two faces of collector, to form the collector of positive and negative copolar, it can be achieved that prepared by multiple lithium battery electric core laminations, to realize the extensive preparation and popularization of inexpensive solid lithium battery.It can also be directly using collector as the electrode of lithium battery, to simplify the encapsulating structure of the lithium battery.
Description
【Technical field】
The utility model is related to field of lithium, more particularly to a kind of current collector structure, lithium battery electric core and its lithium battery.
【Background technology】
Solid lithium battery be due to its safety, cycle performance is excellent the advantages that as secondary cell important development side
To, simultaneously because lithium metal Elements Atom radius it is small, with minimum electrochemical potential, solid lithium battery compares other sodium ions
Battery has the market application potential of bigger.
Lithium battery electric core material system at present, energy density can only achieve 250-300Wh/kg.Its essential problem is battery
Electrode material limit, specifically negative material use graphite or C-Si cathode, anode using LiFePO4, ternary material and
Cobalt acid lithium causes the above results.
The existing uniformity based on the solid state lithium battery of the methods of solid-phase sintering due to that can not ensure large area material preparation,
The generation of Li dendrite can not be solved at all, the reason is that can not ensure the electric fields uniform distribution of electrode surface, be only used for preparing
Small area battery sample.The prior art cannot be satisfied the preparation demand of large area solid lithium battery.
The above problem limits the extensive preparation and popularization of inexpensive solid lithium battery.
【Utility model content】
To overcome the problems, such as that the existing extensive preparation that cannot achieve inexpensive solid lithium battery and popularization, this practicality are new
Type provides a kind of current collector structure, lithium battery electric core and its lithium battery.
It is as follows that the utility model provides a technical solution to solve above-mentioned technical problem：A kind of current collector structure comprising
Collector, the collector include two opposite main surfaces, column crystal anode layer are formed in one of main surface, to make
For the anode structure of a lithium battery electric core, negative electrode layer is formed in another main surface, using the negative polarity node as another lithium battery electric core
Structure.
It is as follows that the utility model provides another technical solution to solve above-mentioned technical problem：A kind of lithium battery electric core, packet
The first collector is included, which includes two opposite main surfaces, and column crystal is being formed just in one of main surface
Pole layer, using the anode structure as the lithium battery electric core, negative electrode layer is formed in another main surface, using as another lithium battery electric core
Negative pole structure.
Preferably, the thickness of the column crystal anode layer is 10nm-100 μm；The column crystal anode layer include V,
In Mo, Mn, Ni, Fe, Co, Cr, Ti or Bi metallic element the metal oxide of one or more combination and contain lithium metal oxide.
Preferably, the lithium battery electric core includes the second collector and the cathode for being formed in one surface of the second collector
Layer, which includes lithium silicon-carbon composite cathode layer, and the negative electrode layer is towards the column crystal anode layer.
Preferably, the lithium silicon-carbon composite cathode layer includes depositing the silicon lithium being formed on the negative current collector to answer
Close, carbon nano-particle be compounded in silicon lithium it is compound within.
Preferably, the lithium silicon-carbon composite cathode layer forms a carbon base material layer or institute towards the surface of the anode structure
It states lithium silicon-carbon composite cathode layer and forms a carbon base material layer towards the surface of second collector.
Preferably, filling is formed described in cladding between the column crystal anode layer and the lithium silicon-carbon composite cathode layer
The thickness of first electrolyte layer of column crystal, first electrolyte layer is 1nm-50 μm.
Preferably, the lithium battery electric core includes being formed in the one side of first electrolyte layer towards the negative electrode layer
The second electrolyte layer, the thickness of second electrolyte layer is 1-3000nm.
It is as follows that the utility model provides a technical solution to solve above-mentioned technical problem：A kind of lithium battery comprising at least
It is positive and negative total to share one between at least two lithium battery electric cores being directly superposed for the lithium battery electric core of two continuous lamination settings
Pole collector, the positive and negative copolar collector plate include two opposite main surfaces, and column crystal is being formed just in one of main surface
Pole layer, using the anode structure as a wherein lithium battery electric core, negative electrode layer is formed in another main surface, using as another lithium battery
The negative pole structure of battery core.
Preferably, it is to be connected in series or in parallel between two lithium battery electric cores of a shared positive and negative copolar collector.
Compared with prior art, current collector structure provided by the utility model, lithium battery electric core and its lithium battery, have
Following advantageous effect：
Current collector structure, lithium battery electric core and lithium battery provided by the utility model, wherein collector include two phases
To main surface, column crystal anode layer is formed in one of main surface, using the anode structure as a lithium battery electric core, separately
Negative electrode layer is formed in one main surface, using the negative pole structure as another lithium battery electric core.By being set on two faces of collector
Positive and negative anodes are set, to form the collector of positive and negative copolar, it can be achieved that prepared by multiple lithium battery electric core laminations, to realize that large area is complete
The preparation of solid state lithium battery.
The integral thickness of lithium battery electric core, lithium battery can be also reduced using the collector of positive and negative copolar.Further, it utilizes
The collector of positive and negative copolar is, it can be achieved that be to be connected in series between multiple lithium battery electric cores.When lithium battery electric core is connected in lithium battery
It, can be directly using collector as the electrode of lithium battery, to simplify the encapsulating structure of the lithium battery when connection.
In addition, in the present invention using the positive electrode with columnar crystal structure as anode layer, to its institute
The complete column crystal formed can be that lithium ion provides unimpeded diffusion and migrating channels, column during charge and discharge
The purpose of crystal is the high performance negative material of matching to improve the efficiency that anode material of lithium is embedded and deviates from.
In the present invention, the lithium battery electric core and lithium battery can be used further in negative current collector towards anode
The lithium silicon-carbon composite cathode layer formed in the one side of structure.It can further improve the energy of lithium battery using lithium silicon-carbon composite cathode layer
Metric density, to obtain high power lithium battery battery core and its lithium battery.
Further include a carbon base material layer, the carbon substrate in lithium battery electric core and lithium battery provided by the utility model
The bed of material, which can be formed between lithium silicon-carbon composite cathode layer and second collector, forms a carbon base material layer or the carbon substrate
The bed of material can be formed in the lithium silicon-carbon composite cathode layer towards in the one side of the anode structure.The setting of the carbon base material layer
Electric conductivity can be enhanced, to improve stability and the safety of the lithium battery electric core and lithium battery.
It is multiple in the column crystal anode layer and the lithium silicon-carbon in lithium battery electric core and lithium battery described in the utility model
Filling forms the first electrolyte layer between closing negative electrode layer, and the thickness of first electrolyte layer is 1nm-50 μm.First electricity
Solution matter layer can coat the column crystal anode layer, therefore have large surface area, therefore it can be lithium electricity to form the first electrolyte layer
More reaction interfaces are provided between electrolyte and anode layer in pond, are conducive to the complete reaction of battery charge and discharge process.
In lithium battery electric core and lithium battery described in the utility model one can be also formed on the surface of first electrolyte layer
Second electrolyte layer can further improve the flatness and the negative terminal surface field distribution uniformity of first electrolyte layer, together
When can also increase the hardness of the first electrolyte layer, prevent positive and negative anodes from contacting and causing short circuit.
【Description of the drawings】
Fig. 1 is the schematic diagram of a layer structure for the current collector structure that the utility model first embodiment is provided.
Fig. 2 is the schematic diagram of a layer structure for the lithium battery electric core that the utility model second embodiment is provided.
Fig. 3 is the schematic diagram of a layer structure of the lithium battery electric core of another embodiment shown in Fig. 2.
Fig. 4 A are the layer knots for the lithium battery electric core wherein specific implementation mode that the utility model 3rd embodiment is provided
Structure schematic diagram.
Fig. 4 B are the layer knots for another specific implementation mode of lithium battery electric core that the utility model 3rd embodiment is provided
Structure schematic diagram.
Fig. 5 is the structural schematic diagram for the lithium battery that the utility model fourth embodiment is provided.
Fig. 6 is the structural schematic diagram for the lithium battery that the 5th embodiment of the utility model is provided.
Fig. 7 is the structural schematic diagram for the lithium battery that the utility model sixth embodiment is provided.
Fig. 8 is the flow diagram of the preparation method for the lithium battery that the 7th embodiment of the utility model is provided.
【Specific implementation mode】
In order to make the purpose of this utility model, technical solution and advantage be more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to solve
The utility model is released, is not used to limit the utility model.
Referring to Fig. 1, the first embodiment of the utility model provides a kind of current collector structure 100, the current collector structure
100 include a collector 101, and the collector 101 includes two opposite main surfaces 109, shape in one of main surface 109
At column crystal anode layer 102, using the anode structure as a lithium battery electric core, negative electrode layer is formed in another main surface 109
103, using the negative pole structure as another lithium battery electric core.
The utility model is herein and in following all examples, for the defined below of the collector material：The collection
Fluid may include the list that the combination of one or more of other metals such as Cu, Al, Ni, Ag, Au, Cr, Ta, Ti, Mo is obtained
Matter metal or metal alloy.
Referring to Fig. 2, the second embodiment of the utility model provides a kind of lithium battery electric core 10 comprising the first collector
11 and second collector 12, wherein first collector 11 includes two opposite main surfaces 110, one of main surface
Anode layer 111 is formed on 110, and negative electrode layer is formed in another main surface using the anode structure as the lithium battery electric core 10
112, using the negative pole structure as another lithium battery electric core 10.Second collector 12 equally also includes two opposite main tables
Face 120 forms negative electrode layer 121 in one of main surface 120, using the negative pole structure as the lithium battery electric core 10, and
Anode layer 122 is formed in another main surface of second collector 12, using the anode structure as another lithium battery electric core 10.
In the present invention, the thickness of first collector 11 and second collector 12 is 10nm-100 μm,
Specifically, the thickness of first collector 11 and second collector 12 can also be 10nm, 15nm, 20nm, 24nm,
56nm, 143nm, 350nm, 567nm, 778nm, 983nm, 1 μm, 19 μm, 31 μm, 45 μm, 50 μm, 61 μm, 76 μm, 89 μm or
100μm。
In the utility model some specific embodiments, above-mentioned anode layer 111 may include column crystal, the anode layer
111 thickness is 10nm-100 μm；Specifically, the thickness of the anode layer 111 may further be：10nm、15nm、20nm、
24nm、56nm、143nm、350nm、567nm、778nm、983nm、1μm、19μm、31μm、45μm、50μm、61μm、76μm、89μ
M or 100 μm.
The thickness of above-mentioned negative electrode layer 111 can be 10nm-100 μm, and specifically, the thickness of the negative electrode layer 111 can be further
For：10nm、15nm、20nm、24nm、56nm、143nm、350nm、567nm、778nm、983nm、1μm、19μm、31μm、45μm、
50 μm, 61 μm, 76 μm, 89 μm or 100 μm.
In the present invention, the material of the column crystal may also include：Including V, Mo, Mn, Ni, Fe, Co, Cr, Ti
Or in the metallic elements such as Bi the metal oxide of one or more combination and contain lithium metal oxide.The anode layer 111 includes
At least one layer of column crystal.Specifically, column crystal can be V2O5Column crystal, V6O13Column crystal, MnO2Column crystal,
Mo2O3Column crystal or Co1.5V0.5O3Column crystal etc..
Specifically, in the utility model other specific embodiments, the anode layer 111 may include LiFePO4,
The column crystal of cobalt acid lithium or tertiary cathode material etc..
In the anode layer 111, the column crystal is arranged in rule, can be mistake of the lithium ion in charge and discharge therefore
Unobstructed diffusion and migrating channels are provided in journey, in favor of the insertion and abjection of lithium, so as to improve the multiplying power property of lithium battery, and
It can make the anode layer 111 that can have higher capacity density.
Specifically, gapless densification is arranged between the column crystal being disposed adjacent.It can in the range of same area
The quantity for the column crystal being arranged is more, then can further improve close by the capacity of its prepared anode structure obtained
Degree.
The utility model is herein and the size of column crystal as described below refers to ruler along the anode structure thickness direction
Very little size.The size of the column crystal is 1nm-100 μm.In the utility model some specific embodiments, the column
The size of crystal be specially 1nm, 3nm, 5nm, 7nm, 10nm, 17nm, 23nm, 26nm, 46nm, 57nm, 101nm, 143nm,
350nm, 567nm, 778nm, 983nm, 1 μm, 19 μm, 31 μm, 45 μm, 50 μm, 61 μm, 76 μm, 89 μm or 100 μm.
As shown in Figure 3, in the utility model some specific implementation modes, the column crystal anode layer 111 uses
The PVD techniques such as magnetron sputtering, electron beam evaporation, pulsed laser deposition and atomic layer deposition are led in the first collector 11 wherein one
It deposits and is formed on surface.
Similarly, similarly mode the column to form another lithium battery electric core 10 can also be deposited on the second collector 12
The anode layer 122 of shape crystal.
In the utility model some specific embodiments, above-mentioned negative electrode layer 112 can further comprise lithium silicon-carbon Compound Negative
Pole.When with the lithium silicon-carbon composite cathode material being the negative electrode layer 112, the thickness of the negative electrode layer 112 is 2nm-20 μm, tool
Body, the thickness of institute's lithium silicon-carbon composite cathode layer may further be：2nm、4nm、7nm、10nm、20nm、67nm、250nm、
345nm, 456nm, 778nm, 983nm, 1 μm, 3 μm, 4.5 μm, 5 μm, 7 μm, 11 μm, 15 μm or 20 μm.
In the utility model some specific embodiments, magnetron sputtering, electricity can be used in the lithium silicon-carbon composite cathode layer
The PVD techniques such as beamlet evaporation, pulsed laser deposition and atomic layer deposition deposit that form silicon lithium compound, further use hot pressing skill
Art by carbon nano-particle be compounded in silicon lithium it is compound within be prepared.
Specifically, before carrying out hot pressing, carbon nano-particle can be dissolved in after forming coating slurry in lithium salt solution,
Coated on lithium-silicon composite cathode surface, then it is heated and pressurizeed with high-temperature corrosion resistance substrate, so that slurry hot pressing enters
Within lithium-silicon alloy, under the action of high temperature, pulp solution can dissipate to the greatest extent, to obtain required lithium silicon-carbon composite cathode layer.
Further as shown in Figure 2, in first specific implementation mode of the present embodiment, in the lithium battery electric core 10
In, filling, which is formed, between the column crystal anode layer 111 and the lithium silicon-carbon composite cathode layer 121 coats the column crystal
The thickness of first electrolyte layer 13 in body surface face, first electrolyte layer 13 is 1nm-50 μm.Specifically, first electrolysis
The thickness of matter layer 13 can be 1nm, 3nm, 5nm, 7nm, 10nm, 15nm, 26nm, 31nm, 46nm, 57nm, 101nm, 147nm,
250nm, 356nm, 567nm, 778nm, 983nm, 1 μm, 19 μm, 31 μm, 45 μm or 50 μm.
The material of first electrolyte layer 13 includes calcium titanium-type solid electrolyte, NASICON types solid electrolyte, pomegranate
Stone-type solid electrolyte, LiGePS type sulfide solid electrolyte, LiSiPS type sulfide solid electrolytes or LiSnPS type sulphur
The combination of compound solid electrolyte one or more.
It is different with electrolyte in the prior art, is filled directly between positive and negative pole material, due in present embodiment
In, the anode layer 11 uses columnar grain, and with large surface area, therefore it can be in lithium battery to form the first electrolyte layer 13
Electrolyte and anode layer 111 between more reaction interfaces are provided, therefore, be conducive to the complete anti-of battery charge and discharge process
It answers.Further, when 13 thickness of the first electrolyte layer is larger, the surface of first electrolyte layer 13 is uniform, so as to
Ensure that the surface field of negative electrode layer 121 is also uniformly distributed.
Please continue to refer to Fig. 3, in second specific implementation mode of the present embodiment, with above-mentioned first specific implementation mode
Difference lies in：Then further include being formed in the lithium battery electric core 10 when 13 surface of the first electrolyte layer is uneven
The second electrolyte layer 14 in first electrolyte layer, 13 one side towards the negative electrode layer 121, second electrolyte
The thickness of layer 14 is 1-3000nm.Specifically, the thickness of second electrolyte layer 14 be 1nm, 3nm, 5nm, 7nm, 10nm,
17nm、23nm、26nm、46nm、57nm、101nm、143nm、350nm、567nm、778nm、983nm、1000nm、1500nm、
2100nm, 2189nm or 3000nm.
In the present invention, the setting of second electrolyte layer 14 is thick in order to fill up first electrolyte layer 13
Spend part unevenly distributed, to improve the negative electrode layer 121 surface electric field distribution uniformity, by being arranged described the
Two electrolyte layers 14, can also further increase the hardness of electrolyte layer, prevent positive and negative anodes contact from causing short circuit.
Please continue to refer to Fig. 4 A and Fig. 4 B, the 3rd embodiment of the utility model provides a kind of lithium battery electric core 20, this reality
Apply example and above-mentioned second embodiment difference lies in：The lithium battery electric core 20 further includes a carbon base material layer 29.It is described carbon-based
Material layer 29 is specially graphite flake, carbon nanotube, graphene film layer etc., is only used as example herein, new not as this practicality
The restriction of type.
The effect of the carbon base material layer 29 is to improve the field distribution of negative terminal surface, enhances electric conductivity, contributes to lithium negative
The insertion or abjection of pole and avoidable cathode of lithium form Li dendrite.
It as shown in Figure 4 A, can be in the negative electrode layer 221 towards the first electrolyte in the utility model some embodiments
The surface of layer 23 forms the carbon base material layer 29.
As shown in Figure 4 B, in some other embodiments of the utility model, the carbon base material layer 29 may be provided at
Between the negative electrode layer 221 and the second collector 22.
In the utility model some specific embodiments, the carbon base material layer 29 be formed in by heat pressing process it is negative
Surface of the pole layer 221 towards the first electrolyte layer 23 or towards second collector 22, therefore, 29 meeting of the carbon base material layer
The gradient carbon material distribution of certain depth is realized in the inside of the negative electrode layer 221, and to a certain extent to 221 shape of negative electrode layer
At cladding and support, enhances the intensity of negative electrode layer 221, avoid 221 avalanche of negative electrode layer.
In the utility model some specific embodiments, the carbon base material layer 29 can also be by way of coating in institute
State the carbon of thickness required for being formed on surface of the negative electrode layer 221 towards the first electrolyte layer 23 or towards second collector 22
Based material layer 29.
Referring to Fig. 5, the utility model fourth embodiment provides a lithium battery 30, the lithium battery 30 may include two companies
The first lithium battery electric core 301 and the second lithium battery electric core 302 of continuous lamination setting.First lithium battery electric core 301 and the second lithium electricity
A positive and negative copolar collector 31 is shared between pond battery core 302, which includes two opposite main surfaces
310, column crystal anode layer 311 is formed in one of main surface 310, using the anode knot as the first lithium battery electric core 301
Structure forms negative electrode layer 312 in another main surface 310, using the negative pole structure as the second lithium battery electric core 302.
Continue as shown in Figure 5, further includes negative current collector 32 in first lithium battery electric core 301, described second
Lithium battery electric core 302 includes plus plate current-collecting body 35.Wherein, towards 311 side shape of column crystal anode layer on negative current collector 32
At there is a negative electrode layer 321, the plus plate current-collecting body 35 is equipped with anode layer 351 towards the surface of the positive and negative copolar collector 31,
In, the definitions relevant in relation to negative electrode layer 321 and anode layer 351 is as shown in above-mentioned second embodiment and 3rd embodiment, herein
It repeats no more.
Further include being arranged in column in some specific implementation modes of the present embodiment, in first lithium battery electric core 301
The first electrolyte layer 33 of formation is filled between shape crystal anode layer 311 and negative electrode layer 321 and is formed in the first electrolyte layer
The second electrolyte layer 34 on 33 surfaces towards the negative electrode layer 312.Second lithium battery electric core 302 further includes in anode
The first electrolyte layer 33 of formation is filled between layer 351 and negative electrode layer 312, and is formed in the first electrolyte layer 33 towards described
The second electrolyte layer 34 on the surface of negative electrode layer 321, the negative electrode layer 312 towards the surface of second electrolyte layer 34 also
It can further comprise a carbon base material layer 39.
In the utility model other embodiment, first lithium battery electric core 301 and second lithium battery electric core
302 can be any lithium battery electric core 10 or lithium battery electric core 20 in above-mentioned second embodiment or 3rd embodiment, specific layer
Structure can adjust according to actual battery performance requirement.The above-mentioned restriction in relation to layer structure only as an example, not as this practicality
Novel restriction.
It is electric when may also include more than two lithiums in the lithium battery 30 in some other embodiments of the utility model
Pond battery core 301 or 302, at least partly lithium battery electric core 301 or 302 are arranged to form an entirety by continuous lamination, and setting exists
The shared collector of lithium battery electric core 301 or 302 of the centre of continuous lamination setting, and the lithium battery electric core 10 at both ends is set
Collector is only used as plus plate current-collecting body or negative current collector.
Referring specifically to Fig. 6, the 5th embodiment of the utility model provides a lithium battery 40, and the lithium battery 40 includes more
A lithium battery electric core 10, the lithium battery 40 can be made by way of being successively superimposed, and specific lithium ion list battery core 10 is folded
It is unrestricted to close quantity.
The lithium ion list battery core 10 include overlapping setting the first collector 41, anode layer 44, solid-state electrolyte layer 43,
Negative electrode layer 45 and the second collector 42.The lithium ion list battery core 10 being disposed adjacent is by sharing a plus plate current-collecting body 41 or cathode
Collector 42 is superimposed together.
As shown in Figure 6, shared second collector 42 at the superposition for two lithium battery electric cores 10 being disposed adjacent, i.e., second
Collector 42 is positive and negative copolar collector.As shown in the figure, be arranged 42 both sides of the second collector be respectively anode layer 44 and
Negative electrode layer 45.As shown in Figure 6, can be to be connected in series between multiple lithium battery electric cores 40.When lithium battery electric core string in lithium battery
It, can be directly using collector as the electrode of lithium battery, to simplify the encapsulating structure of the lithium battery when connection connection.
Referring to Fig. 7, the sixth embodiment in the utility model provides a lithium battery 50, in the present embodiment, the lithium
Battery 50 includes 5 lithium battery electric cores, respectively successively lamination setting the first lithium battery electric core 501, the second lithium battery
Core 502, third lithium battery electric core 503, the 4th lithium battery electric core 504 and the 5th lithium battery electric core 505.As shown in Figure 7, above
Multiple lithium battery electric cores are stated to may each comprise：First collector 51, anode layer 54, solid-state electrolyte layer 53, negative electrode layer 55 and second
Collector 52.
As shown in Figure 7, the second collector 52 is shared between the first lithium battery electric core 501 and the second lithium battery electric core 502,
It is respectively provided with negative electrode layer 55 in two opposite main surfaces of second collector 52, it is seen then that the first lithium battery electric core 501 and
Can be to be connected in parallel between two lithium battery electric cores 502.
Between the second lithium battery electric core 502 and third lithium battery 503, the second collector 52 is equally also shared, and in institute
It states and anode layer 54 and negative electrode layer 55 is respectively set in two opposite main surfaces of the second collector 52, it is seen then that the second lithium battery
Can be to be connected in series between battery core 502 and third lithium battery electric core 503.
Further, the first of the second collector 532 of third lithium battery electric core 503 and the 4th lithium battery electric core 504
The overlapping setting of collector 541, and the first collector 532 and the second collector 541 are expressed as the third lithium battery electric core
503 and the 4th lithium battery electric core 504 plus plate current-collecting body or negative current collector.As it can be seen that the third lithium battery electric core 503
Parallel connectivity can be formed with the 4th lithium battery electric core 504 by external circuitry.
In the present embodiment, above-mentioned anode layer 54 is opposite with negative electrode layer 55, the first collector 51 and the second collector 52
Position is adjustable.
It is only example shown in Fig. 7, in actual lithium battery 50, specific connection type can be according to practical lithium battery
Performance requirement adjusts, and is not intended to limit the present utility model herein.
Please continue to refer to Fig. 8, the 7th embodiment of the utility model provides the preparation method S10 of a lithium battery, wherein one
A specific implementation mode includes following step：
Step S11 provides one first collector, and column crystal anode is formed on the wherein one side of the first collector
Layer；
Step S12 forms the first electrolyte layer on surface of the column crystal anode layer far from the first collector by cladding；
Step S13 forms the second electrolyte layer on the surface of first electrolyte layer；
Step S14 forms carbon base material layer on surface of second electrolyte layer far from first electrolyte layer；
Step S15 forms negative electrode layer on surface of the carbon base material layer far from second electrolyte layer；
Step S16 forms the second collector on surface of the negative electrode layer far from the carbon base material layer.
So far, above-mentioned steps S11 completes the preparation of single lithium battery electric core to step S16.
In some other embodiments of the present embodiment, above-mentioned steps S14- steps S16 can be：
Step S14b：Negative electrode layer is formed on surface of second electrolyte layer far from first electrolyte layer；
Step S15b forms carbon base material layer on surface of the negative electrode layer far from second electrolyte layer；
Step S16b forms the second collector on surface of the carbon base material layer far from the carbon base material layer.
In order to continue to obtain the lithium battery of multiple lithium battery electric core superpositions, in some specific embodiments of the present embodiment
In, it may also include following step after above-mentioned steps S16 or step S16b：
Step S17a, deposition forms another lithium battery electric core in the second collector one side opposite with equipped with negative electrode layer
Anode layer.
Step S18a, repeat the above steps S12- steps S16 or step S12- step S16b, until included in lithium battery
Lithium battery electric core quantity reach pre-provisioning request.
Step S19a is packaged multiple lithium battery electric cores of continuous lamination setting, to obtain required lithium battery.
In the present embodiment other specific embodiments, it may also include following step after above-mentioned steps S16：
Step S17b is equipped with the cathode that another lithium battery electric core is formed in the opposite one side of anode layer in the first collector
Layer；
Step P18b forms carbon base material layer on the negative electrode layer；
Step P19b sequentially forms the second electrolyte layer, first in one side of the carbon base material layer far from the negative electrode layer
Electrolyte layer；
Step P20b sequentially forms anode layer, the second collector on surface of first electrolyte layer far from the negative electrode layer；
Step S21b deposits the negative of another lithium battery electric core on the opposite side that second collector is equipped with anode layer
Pole layer.
Step P22b, repeat the above steps P18b- step P21b, until lithium battery electric core quantity included in lithium battery
Reach pre-provisioning request.
Step S23b is packaged multiple lithium battery electric cores of continuous lamination setting, to obtain required lithium battery.
Specifically, for the first collector, the second collector, anode layer, negative electrode layer, carbon-based material in related above-mentioned steps
Layer, the first electrolyte layer or the second electrolyte layer thickness, material are selected as described in above-mentioned second embodiment, 3rd embodiment,
Details are not described herein.
Particularly, in the preparation method S10 of above-mentioned lithium battery, the shape on the first collector and/or the second collector
Before anode layer or negative electrode layer, it is required to carry out planarizing process to the upper surface of the first collector and/or the second collector,
To ensure that collection liquid surface is smooth, does not have oxide surface layer.Wherein, CMP process can be used in planarizing process,
One abrasive material adds polishing machine to carry out local polishing and grinding.
It should be strongly noted that preparing solid-state electricity used in first electrolyte layer and second electrolyte layer
Solution matter includes calcium titanium-type solid electrolyte, NASICON types solid electrolyte, Garnet-type solid electrolyte, the vulcanization of LiGePS types
The group of object solid electrolyte, LiSiPS type sulfide solid electrolytes or LiSnPS type sulfide solid electrolyte one or more
It closes.
In the utility model some specific embodiments, in above-mentioned steps S11, column crystal is formed on collector
It is prepared by the method that anode layer can utilize magnetron sputtering glancing incidence：
(1) substrate is placed in magnetron sputtering cavity, the angle that vertical substrate direction and vertical target direction is arranged is more than
45 °, substrate water cooling keeps room temperature；
(2) 10 are evacuated to-5Pa, is passed through argon gas, and adjusting cavity body running air pressure to 2Pa starts to deposit iron phosphate lithium positive pole material
Material；
(3) while substrate rotation, deposition form 2 microns of column crystals after 50 minutes.
The above-mentioned column crystal anode layer preparation method that is directed to is only as an example, be not intended to limit the present utility model.
A kind of preparation method P60 of lithium battery is further provided in the 8th embodiment of the utility model, with above-mentioned
Seven embodiments difference lies in：Its elder generation is respectively formed anode layer and negative electrode layer in the upper and lower surface of a current collector structure.
The preparation method P60 of the lithium battery specifically includes following step：
Step P11 provides one first collector, and column crystal anode is deposited on the wherein one side of the first collector
Layer, in the another side lithium deposition silicon-carbon composite cathode layer of collector；
Wherein, deposition column crystal anode layer can be carried out simultaneously or sequentially with lithium deposition silicon-carbon composite cathode layer.
After step P11, the following two kinds mode can be subdivided into：
The first is to have the one side of column crystal anode layer as substrate layer in deposition, and continuously form required work(on it
Ergosphere, specific steps include：
Step P12a forms the first electrolyte layer, the second electrolyte layer on the column crystal anode layer successively；
Step P13a forms carbon base material layer in one side of second electrolyte layer far from the anode layer；
Step P14a forms negative electrode layer on face of the carbon base material layer far from second electrolyte layer.
Step P15a forms the second collector on face of the negative electrode layer far from the carbon base material layer.
Second is to have the one side of lithium silicon-carbon composite cathode layer as substrate layer in deposition, and continuously form on it required
Functional layer, specific steps include：
Step P12b forms carbon base material layer on the lithium silicon-carbon composite cathode layer；
Step P13b sequentially forms the second electrolyte layer, first in one side of the carbon base material layer far from the negative electrode layer
Electrolyte layer；
Step P14b sequentially forms anode layer, the second collector on surface of first electrolyte layer far from the negative electrode layer；
After above-mentioned steps P11, there is a face layer by layer deposition required function layer of column crystal anode layer in deposition or heavy
Product has the sequencing of a face layer by layer deposition required function layer of column crystal anode layer unrestricted, can carry out, also may be used successively
It is carried out at the same time.
Further, above-mentioned steps P12a- steps P15 and step P12b- steps P14b may be repeated, so that complete institute
It needs the lithium battery of lithium battery electric core quantity and stops.
In this embodiment, the carbon base material layer also may be formed at the lithium silicon-carbon composite cathode layer far from second electricity
On the one side for solving matter layer, specific position can adjust according to actual demand, herein not as the limit of the utility model
It is fixed.
Specifically, for the first collector, the second collector, anode layer, negative electrode layer, carbon-based material in related above-mentioned steps
Layer, the first electrolyte layer or the second electrolyte layer thickness, material are selected as described in above-mentioned second embodiment, 3rd embodiment,
Details are not described herein.
Compared with prior art, current collector structure provided by the utility model, lithium battery electric core and its lithium battery, have
Following advantageous effect：
(1) current collector structure provided by the utility model, lithium battery electric core and lithium battery, wherein collector include two
Opposite main surface forms column crystal anode layer in one of main surface, using the anode structure as a lithium battery electric core,
Negative electrode layer is formed in another main surface, using the negative pole structure as another lithium battery electric core.By on two faces of collector
Positive and negative anodes are set, to form the collector of positive and negative copolar, it can be achieved that prepared by multiple lithium battery electric core laminations, to realize large area
The preparation of solid lithium battery.
The integral thickness of lithium battery electric core, lithium battery can be also reduced using the collector of positive and negative copolar.Further, it utilizes
The collector of positive and negative copolar between multiple lithium battery electric cores, it can be achieved that be connected in series with.When lithium battery electric core series connection connects in lithium battery
It, can be directly using collector as the electrode of lithium battery, to simplify the encapsulating structure of the lithium battery when connecing.
In addition, in the present invention using the positive electrode including column crystal as anode layer, so as to be lithium
The purpose of ion provides unimpeded diffusion and migrating channels during charge and discharge, column crystal is that the high performance cathode of matching is real
The maximum of existing positive electrode utilizes, and improves the efficiency of lithium insertion and abjection.
(2) in the present invention, the lithium battery electric core and lithium battery can be used further directly in negative current collector
On the lithium silicon-carbon composite cathode layer that is formed.It can further improve the energy density of lithium battery using lithium silicon-carbon composite cathode layer,
To obtain high-performance lithium ion core and its lithium battery.
(3) lithium battery electric core and lithium battery provided by the utility model further include being formed in lithium silicon-carbon composite cathode
Layer is (i.e. described towards the surface of the anode structure or on surface of the lithium silicon-carbon composite cathode layer far from the anode structure
Lithium silicon-carbon composite cathode layer is towards the surface of second collector) on form a carbon base material layer.The carbon base material layer
The appearance of Li dendrite can be prevented by being arranged, to improve stability and the safety of the lithium battery electric core and lithium battery.
(4) in the column crystal anode layer and the lithium silicon-carbon in lithium battery electric core and lithium battery described in the utility model
Filling forms the first electrolyte layer between composite negative pole layer, and the thickness of first electrolyte layer is 1nm-50 μm.Described first
Electrolyte layer can coat the column crystal anode layer, therefore have large surface area, therefore it can be lithium to form the first electrolyte layer
More reaction interfaces are provided between electrolyte and anode layer in battery, are conducive to the complete reaction of battery charge and discharge process.
(5) it can also be formed on the surface of first electrolyte layer in lithium battery electric core and lithium battery described in the utility model
One second electrolyte layer can further improve the flatness and the negative terminal surface field distribution uniformity of first electrolyte layer,
The hardness that can also increase by the first electrolyte layer simultaneously prevents positive and negative anodes from contacting and causing short circuit.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Any modification made by within the principle of utility model, equivalent replacement and improvement etc. should all include the scope of protection of the utility model
Within.
Claims (10)
1. a kind of current collector structure, it is characterised in that：Including collector, the collector includes two opposite main surfaces,
In column crystal anode layer, using the anode structure as a lithium battery electric core, shape in another main surface are formed in a main surface
At negative electrode layer, using the negative pole structure as another lithium battery electric core.
2. a kind of lithium battery electric core, it is characterised in that：It includes the first collector, which includes two opposite masters
Surface forms column crystal anode layer, using the anode structure as the lithium battery electric core, another main table in one of main surface
Negative electrode layer is formed on face, using the negative pole structure as another lithium battery electric core.
3. lithium battery electric core as stated in claim 2, it is characterised in that：The thickness of the column crystal anode layer is 10nm-
100μm；The column crystal anode layer includes one or more of groups in V, Mo, Mn, Ni, Fe, Co, Cr, Ti or Bi metallic element
The metal oxide of conjunction and contain lithium metal oxide.
4. lithium battery electric core as stated in claim 2, it is characterised in that：The lithium battery electric core include the second collector and
It is formed in the negative electrode layer on one surface of the second collector, which includes lithium silicon-carbon composite cathode layer, and the negative electrode layer is towards described
Column crystal anode layer.
5. lithium battery electric core as claimed in claim 4, it is characterised in that：The lithium silicon-carbon composite cathode layer includes that deposition is formed
Silicon lithium on the negative current collector is compound, carbon nano-particle be compounded in silicon lithium it is compound within.
6. lithium battery electric core as claimed in claim 5, it is characterised in that：The lithium silicon-carbon composite cathode layer is towards the anode
The surface of structure forms a carbon base material layer or the surface of the lithium silicon-carbon composite cathode layer towards second collector is formed
One carbon base material layer.
7. lithium battery electric core as claimed in claim 4, it is characterised in that：In the column crystal anode layer and the lithium silicon-carbon
Filling forms the first electrolyte layer for coating the column crystal between composite negative pole layer, and the thickness of first electrolyte layer is
1nm-50μm。
8. lithium battery electric core as recited in claim 7, it is characterised in that：The lithium battery electric core includes being formed in described first
The thickness of the second electrolyte layer in one side of the electrolyte layer towards the negative electrode layer, second electrolyte layer is 1-
3000nm。
9. a kind of lithium battery, it is characterised in that：It includes the lithium battery electric core of at least two continuous lamination settings, and directly superposition is set
A positive and negative copolar collector is shared between at least two lithium battery electric cores set, which includes two opposite
Main surface forms column crystal anode layer in one of main surface, using the anode structure as a wherein lithium battery electric core, separately
Negative electrode layer is formed in one main surface, using the negative pole structure as another lithium battery electric core.
10. lithium battery as claimed in claim 9, it is characterised in that：Share two lithium batteries of a positive and negative copolar collector
It is to be connected in series or in parallel between core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721785947.3U CN207719340U (en) | 2017-12-19 | 2017-12-19 | Current collector structure, lithium battery electric core and its lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721785947.3U CN207719340U (en) | 2017-12-19 | 2017-12-19 | Current collector structure, lithium battery electric core and its lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207719340U true CN207719340U (en) | 2018-08-10 |
Family
ID=63056529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721785947.3U Active CN207719340U (en) | 2017-12-19 | 2017-12-19 | Current collector structure, lithium battery electric core and its lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207719340U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935888A (en) * | 2017-12-19 | 2019-06-25 | 成都亦道科技合伙企业（有限合伙） | Current collector structure, lithium battery electric core and its lithium battery |
| CN110635175A (en) * | 2019-10-28 | 2019-12-31 | 深圳吉阳智能科技有限公司 | Internal serial-type battery cell and internal serial-type battery |
-
2017
- 2017-12-19 CN CN201721785947.3U patent/CN207719340U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935888A (en) * | 2017-12-19 | 2019-06-25 | 成都亦道科技合伙企业（有限合伙） | Current collector structure, lithium battery electric core and its lithium battery |
| CN110635175A (en) * | 2019-10-28 | 2019-12-31 | 深圳吉阳智能科技有限公司 | Internal serial-type battery cell and internal serial-type battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Cao et al. | Modulating Zn deposition via ceramic-cellulose separator with interfacial polarization effect for durable zinc anode | |
| Chen et al. | An artificial polyacrylonitrile coating layer confining zinc dendrite growth for highly reversible aqueous zinc‐based batteries | |
| Liu et al. | A flexible quasi‐solid‐state nickel–zinc battery with high energy and power densities based on 3D electrode design | |
| CN107799699B (en) | Clay mineral composite lithium battery diaphragm and preparation method thereof | |
| CN103947015B (en) | The manufacture method of All-solid film batteries | |
| CN104011905B (en) | The manufacture method of all-solid-state battery electrode | |
| US9249522B2 (en) | Electrophoretic deposition of thin film batteries | |
| KR20200052707A (en) | Anodeless coating layer for All-solid-state battery and All-solid-state battery including the same | |
| CN110518278B (en) | Solid electrolyte with negative interface layer, preparation method and solid battery | |
| Shi et al. | Constructing an elastic solid electrolyte interphase on graphite: a novel strategy suppressing lithium inventory loss in lithium-ion batteries | |
| CN108365258A (en) | The solid electrolyte of polymer substrate and preparation method thereof with room-temperature conductivity | |
| CN108365255A (en) | A kind of lithium battery electric core, lithium battery and preparation method thereof | |
| CN104766994B (en) | Battery | |
| CN207719355U (en) | Current collector structure, lithium battery electric core and its lithium battery | |
| CN101640261A (en) | Cathode of lithium-ion secondary battery, preparation method and lithium-ion secondary battery | |
| Liu et al. | MnAl Layered Double Hydroxides: A Robust Host for Aqueous Ammonium‐Ion Storage with Stable Plateau and High Capacity | |
| CN207719340U (en) | Current collector structure, lithium battery electric core and its lithium battery | |
| CN103843172B (en) | Dividing plate with heat-resistant insulating layer | |
| Lu et al. | 3D porous carbon networks with highly dispersed SiO x by molecular-scale engineering toward stable lithium metal anodes | |
| CN102054961A (en) | Active negative pole piece and preparation method thereof | |
| CN107431187A (en) | Electrode and its manufacture method with porous adhesive coating and the lithium secondary battery including the electrode | |
| CN109935888A (en) | Current collector structure, lithium battery electric core and its lithium battery | |
| CN108604681A (en) | energy storage electrode and device | |
| JP2016213105A (en) | Active material mold manufacturing method, electrode composite manufacturing method, and lithium battery manufacturing method | |
| CN111933922B (en) | Negative pole piece with coating layer, and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210218 Address after: No. 88, Yingbin Avenue, Shouan Town, Pujiang County, Chengdu, Sichuan 610000 Patentee after: Chengdu Dachao Technology Co.,Ltd. Address before: No. 1609, 16th floor, Hemei Begonia Center (Tianfu maker), No. 2039, south section of Tianfu Avenue, Tianfu New District, Chengdu, Sichuan 610213 Patentee before: CHENGDU YIDAO TECHNOLOGY PARTNERSHIP (L.P.) |
|
| TR01 | Transfer of patent right |