CN104377345B - Miniature energy storage device electrode, miniature energy storage device and forming method thereof - Google Patents
Miniature energy storage device electrode, miniature energy storage device and forming method thereof Download PDFInfo
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- CN104377345B CN104377345B CN201310356463.7A CN201310356463A CN104377345B CN 104377345 B CN104377345 B CN 104377345B CN 201310356463 A CN201310356463 A CN 201310356463A CN 104377345 B CN104377345 B CN 104377345B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- 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
Abstract
The present invention discloses a kind of forming method of miniature energy storage device electrode, comprises the following steps：Make patterned miniature mask plate；Substrate is provided, and prepares electrode slurry；Miniature mask plate is placed in substrate；Electrode slurry atomizing spraying is being covered with the substrate of miniature mask plate；Miniature mask plate is separated with substrate, patterned electrode layer is formed in substrate after electrode slurry is dried.The forming method of miniature energy storage device electrode of the invention passes through miniature mask plate technique so that electrode layer can be made complicated fine shape, and precision is very high；By spraying technology by electrode slurry even application in substrate surface, thickness is more uniform everywhere to make the electrode layer that ultimately forms；Simple, the low cost, it is easy to the advantage of large-scale promotion with technology.The invention also discloses a kind of miniature energy storage device electrode, a kind of miniature energy storage device and forming method thereof.
Description
Technical field
The invention belongs to microdevice technology and electrode machining technical field, and in particular to a kind of miniature energy storage device electricity
Pole, miniature energy storage device and forming method thereof.
Background technology
At present, demand of the minitype portable electronic device in fields such as mobile communication, medical treatment, Internet of Things is increasing, this
So that the exploitation of miniature energy storage device product need also exist for it is matched on capacity and size.Therefore, miniature accumulator
Part prepares related technology report also cumulative year after year.Ultracapacitor is stored up with lithium ion battery respectively as power-type and energy type
Energy device is equally the research emphasis of miniature energy storage device exploitation, and both can each other be mended according to the demand of product practical application
Fill.
The technology of preparing of miniature energy storage device is also presented diversified trend in recent years.Such as：1) using in MEMS technology
Dry etching and wet-etching technology make the three-dimensional structure of high-ratio surface, then using selective deposition, sputtering or plating
Mode prepare miniature ultracapacitor or lithium ion battery structure；2) graphite is prepared using the method thermal reduction of laser engraving
Alkene micro super capacitor structure；3) carbon-based micro super capacitor is prepared using the method for inkjet printing.
It is wherein above-mentioned to have as a drawback that in the prior art：1) MEMS technology related manufacturing processes complex process, high cost；
2) method of laser engraving is mainly used for thermal reduction and prepares the miniature energy storage device of Graphene, thus range of application receive it is larger
Limitation, and the precision of device is obtained not as MEMS approach；3) inkjet technology is compared with above two technology, and technology is accurate
Degree is worst, and the technology is very high to the coherence request of slurry.Therefore urgently propose that a kind of new low cost, precision are good
Miniature energy storage device technology of preparing.
The content of the invention
It is contemplated that at least solving one of above-mentioned technical problem to a certain extent or providing at a kind of useful business
Industry is selected.Therefore, first purpose of the invention be propose a kind of low cost, precision is good, be easy to the micro- of large-scale production
The forming method of type energy storage device electrode.
To achieve the above object, the forming method of miniature energy storage device electrode according to embodiments of the present invention, including it is following
Step：S1. patterned miniature mask plate is made；S2., substrate is provided, and prepares electrode slurry；S3. by the miniature mask plate
It is placed in the substrate；S4. the electrode slurry atomizing spraying is being covered with the substrate of the miniature mask plate；And
S5. the miniature mask plate is separated with the substrate, forms patterned in the substrate after the electrode slurry is dried
Electrode layer.
The forming method of miniature energy storage device electrode of the invention passes through miniature mask plate technique so that electrode layer can be made
Into complicated fine shape, precision is very high；Electrode slurry even application is made by electrode layer in substrate surface by spraying technology
Thickness is more uniform everywhere；Simple, the low cost, it is easy to the advantage of large-scale promotion with technology.
In one embodiment of the invention, in the step S1, described miniature cover is made by laser engraving machine
Template.
In one embodiment of the invention, the size range of the miniature mask plate is：Length is 1-100mm, width
It is 1-100mm, thickness is 0.1-5mm.
In one embodiment of the invention, the material of the miniature mask plate is polyethylene terephthalate or poly-
Methyl methacrylate.
In one embodiment of the invention, the material of the substrate is polyethylene terephthalate, poly dimethyl
Siloxanes, Kynoar, non-woven fabrics or silicon wafer.
In one embodiment of the invention, the solute in the electrode slurry be activated carbon, graphite powder, CNT,
One or more in Graphene, cobalt acid lithium, lithium nickel cobaltate, LiMn2O4, LiFePO4 or lithium titanate of combination, solvent be water,
Absolute ethyl alcohol, acetone, ethylene glycol, 1-METHYLPYRROLIDONE, dimethylformamide, one or more of dimethyl sulfoxide (DMSO) of group
Close.
In one embodiment of the invention, after the step S5, also include:Electrode layer described in roll-in and the base
Bottom.
In one embodiment of the invention, between the step S3 and step S4, also include：On the substrate
The position of default electrode layer forms current collection fluid layer.
In one embodiment of the invention, the electrode layer is L-shaped, rectangle, keyhole or comb finger-type.
In one embodiment of the invention, miniature energy storage device is ultracapacitor or lithium ion battery.
Second object of the present invention is a kind of low cost of proposition, precision is good, be easy to the miniature storage of large-scale production
Can device electrode.
To achieve the above object, miniature energy storage device electrode according to embodiments of the present invention, is above-disclosed miniature storage
What the forming method of energy device electrode was obtained.
Third object of the present invention is a kind of low cost of proposition, precision is good, be easy to the miniature storage of large-scale production
The forming method of energy device.
To achieve the above object, the forming method of miniature energy storage device according to embodiments of the present invention, comprises the following steps：
A. by the forming method of miniature energy storage device electrode mentioned above, the positive electrode and negative electrode of miniature energy storage device are prepared；
B. positive pole ear and negative lug are pasted；C. dielectric substrate is formed between the positive electrode and negative electrode；And D. is sealed
Dress.
The forming method of miniature energy storage device according to embodiments of the present invention, its electrode is made by miniature mask plate technique
It can be complicated fine shape to obtain electrode material, and precision is very high, by spraying technology by electrode slurry even application in base
Basal surface, makes electrode layer thickness distribution everywhere more uniform.Therefore, can be made uniformity good for two electrodes, it is to avoid because
Cause device performance unstable for electrode area or quality difference.In addition party's law technology is simple, low cost, it is easy to extensive
Promote.
In one embodiment of the invention, the positive electrode and negative electrode are located on same substrate, or positioned at difference
On substrate.
Fourth object of the present invention is a kind of low cost of proposition, precision is good, be easy to the miniature storage of large-scale production
Can device.
To achieve the above object, miniature energy storage device according to embodiments of the present invention, is by above-disclosed miniature storage
What the forming method of energy device was obtained.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the flow chart of the forming method of the miniature energy storage device electrode of the embodiment of the present invention；
Fig. 2 is the schematic diagram of the patterned miniature mask plate of the embodiment of the present invention；
Fig. 3 is the schematic diagram of the electrode layer of a pair of L-shaped, rectangle, keyhole or the comb finger-type of the embodiment of the present invention；
Fig. 4 is the flow chart of the forming method of the miniature energy storage device of the embodiment of the present invention；
Fig. 5 is the structural representation of the miniature energy storage device of the embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are, based on orientation shown in the drawings or position relationship, to be for only for ease of
The description present invention is described with simplified, must have specific orientation, Yi Te rather than the device or element for indicating or imply meaning
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In the description of the invention, " multiple " is meant that two or more,
Unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；It can be machine
Tool is connected, or electrically connected；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two units
Connection inside part.For the ordinary skill in the art, can as the case may be understand above-mentioned term in this hair
Concrete meaning in bright.
First purpose of the invention is a kind of low cost of proposition, precision is good, be easy to the miniature storage of large-scale production
The forming method of energy device electrode.
As shown in figure 1, the forming method of the miniature energy storage device electrode of the embodiment of the present invention, comprises the following steps：
S1. patterned miniature mask plate is made.
Specifically, the material of the miniature mask plate can be polyethylene terephthalate (PET), polymethylacrylic acid
Methyl esters (PMMA) etc..The size and pattern of miniature mask plate are designed by computer software (such as autoCAD, coreldraw).
In one embodiment of the invention, the miniature mask plate is made by laser engraving machine.Specifically, by adjusting laser
The parameters such as the power and linear speed of engraving machine realize the preparation of final mask plate.Alternatively, the size range of miniature mask plate is：
Length is 1-100mm, and width is 1-100mm, and thickness is 0.1-5mm.
Fig. 2 shows a patterned miniature mask plate, and wherein black portions are graphical hollow part.Need explanation
It is, so-called miniature mask plate to represent the size of its hollow out figure about in the millimeter order of magnitude, it is meant that the electrode for ultimately forming
It is a millimeter order of magnitude size, belongs to accurate microdevice.
S2., substrate is provided, and prepares electrode slurry.
Specifically, the material of substrate can be polyethylene terephthalate (PET), dimethyl silicone polymer
(PDMS), Kynoar (PVDF), non-woven fabrics, silicon wafer etc., those skilled in the art can flexibly select according to concrete application
With.Electrode slurry similarly can flexibly be selected by those skilled in the art according to concrete application.A reality of the invention
Example is applied, the solute in electrode slurry can be activated carbon, graphite powder, CNT, Graphene, cobalt acid lithium, lithium nickel cobaltate, mangaic acid
The combination of one or more of lithium, LiFePO4 or lithium titanate isoreactivity material, solvent can be water, absolute ethyl alcohol, acetone, second
One kind or many in glycol, 1-METHYLPYRROLIDONE (NMP), dimethylformamide (DMF), dimethyl sulfoxide (DMSO) (DMSO) equal solvent
The combination planted.For example, 1g Dispersion of Solute Matter can be made into certain density slurry in 10-100ml solvents, specific concentration can be with
Select as needed.Preferably, solute can also be made to disperse in a solvent evenly by ultrasound.
S3. miniature mask plate is placed in substrate.
Specifically, will be folded after the aligned in position for preparing to be formed electrode on the graphical hollow part on miniature mask plate and substrate
Put.
S4. electrode slurry atomizing spraying is being covered with the substrate of miniature mask plate.
Specifically, first electrode slurry is positioned in the hopper of spraying equipment, mixes up the parameters such as spraying equipment gas velocity bore
After carry out atomizing spraying.Thus, electrode slurry has been gone up in the local location covering of the substrate corresponding with the hollow part of miniature mask plate
Material.
S5. miniature mask plate is separated with substrate, after after electrode slurry drying, patterned electrode layer is formed in substrate.
Specifically, miniature mask plate is separated with substrate, when drying one section through a period of time natural drying or artificial condition
Between after (such as 10min -30min), after the solvent in electrode slurry is evaporated, patterned solid-state is formd on substrate
Electrode layer, that is, obtained miniature energy storage device electrode.The size and dimension of the miniature energy storage device electrode is by miniature mask plate
Pattern determines, its volume and quality by miniature mask plate pattern area and coating thickness together decide on.
The forming method of miniature energy storage device electrode according to embodiments of the present invention, at least has the following advantages that：
1. miniature mask plate technique is passed through so that electrode layer can be made complicated fine shape, precision is very high；
2. spraying technology is passed through by electrode slurry even application in substrate surface, and thickness is more uniform everywhere to make electrode layer；
3. have technology simple, low cost, it is easy to the advantage of large-scale promotion.
In a preferred embodiment of the invention, after step s 5, also include:Electrode layer described in roll-in and the base
Bottom.It is more tight that roll-in can combine electrode layer and substrate.Specifically, can using 10-100KPa pressure rolls pressure electrode layer with
Substrate.
In a preferred embodiment of the invention, between the step S3 and step S4, also include：In substrate
The position of default electrode layer forms current collection fluid layer.Specifically, the position of default electrode layer that can be in substrate applies last layer silver
The material of the good conductivities such as paint is used as current collection fluid layer.
As shown in figure 3, in a preferred embodiment of the invention, electrode layer can be L-shaped, rectangle, keyhole, comb finger-type
Or the shape that others can be combined, specifically can flexibly be selected by technical staff, do not repeat herein.It should be noted that comb refers to
The electrode layer of shape has remarkable advantage：First, positive and negative charge is transmitted nearby during comb finger electrodes layer is conducive to electrolyte, improves band
The transmission rate of charged particle, reduces the interior resistance of capacitor, is conducive to reducing polarization during capacitor charging/discharging, improves energy storage effect
Rate.Second, the two comb finger electrodes layers are intermeshed so that substrate can be more uniformly sprayed to during coating electrode slurry
On, the two quality more uniformities of comb finger electrodes layer for ultimately forming.
In a preferred embodiment of the invention, miniature energy storage device is ultracapacitor or lithium ion battery.
Second object of the present invention is a kind of low cost of proposition, precision is good, be easy to the miniature storage of large-scale production
Can device electrode.The electrode is obtained by the forming method of above-mentioned miniature energy storage device electrode.
Third object of the present invention is a kind of low cost of proposition, precision is good, be easy to the miniature storage of large-scale production
The forming method of energy device.
As shown in figure 3, the forming method of the miniature energy storage device of the embodiment of the present invention, comprises the following steps：
A. by the forming method of above-mentioned miniature energy storage device electrode, the positive electrode and negative electricity of miniature energy storage device are prepared
Pole.
B. positive pole ear and negative lug are pasted.
Specifically, positive pole ear is connected with positive electrode, and negative lug is connected with negative electrode.Lug can use copper adhesive tape
Deng those skilled in the art can flexibly select according to concrete application.
C. dielectric substrate is formed between positive electrode and negative electrode.
Specifically, those skilled in the art can be according to concrete application flexible operating.For example, can be in positive electrode and negative electricity
Between pole, formation includes polyvinyl alcohol/sulfuric acid system, polyvinyl alcohol/Phosphoric Acid, polymethyl methacrylate-ethylene carbonate
Ester-lithium perchlorate system, polyethylene glycol oxide-polyethylene glycol-trifluoromethyl sulfonic acid lithium system, polyaniline -1- ethyl -3- methyl miaows
Azoles tetrafluoroborate-trimethyl silanol system, 1- butyl -3- methylimidazole bis trifluoromethyl sulphonyl heavy curtains acid imide-fumed silica
The dielectric substrate of system, 1- butyl -3- methyl imidazolium tetrafluoroborates-fumed silica system, to prepare ultracapacitor or lithium
Ion battery.
D. it is packaged.
Specifically, the miniature energy storage device for assembling is packaged.After the accessories apparatus such as cover plate can be increased if necessary
Encapsulate again.
In one embodiment of the invention, positive electrode and negative electrode may be located on same substrate, it is also possible to positioned at not
With on substrate.When specifically, on same substrate, can process to form positive electrode and negative electrode, process is simple simultaneously.It is located at
It is in the device for ultimately forming, two pieces of substrates are relative when on different substrate, other materials is separated between both positive and negative polarity and negative electrode
Layer, it is not easy to cause inter-electrode short-circuit.
The forming method of miniature energy storage device according to embodiments of the present invention, at least has the following advantages that：
1. its electrode passes through miniature mask plate technique so that electrode material can be complicated fine shape, and precision is very
Height, also, by spraying technology by electrode slurry even application in substrate surface, make electrode layer thickness distribution everywhere more equal
It is even.Therefore, can be made uniformity good for two electrodes, it is to avoid because electrode area or quality are different and cause device performance not
Stabilization.
2. technology is simple, low cost, it is easy to large-scale promotion.
Fourth object of the present invention be propose a kind of low cost, precision is good, the miniature energy storage that is easy to large-scale production
Device.The miniature energy storage device is obtained by the forming method of above-mentioned miniature energy storage device.
To make those skilled in the art more fully understand the present invention, Fig. 4 shows the basic structure of miniature energy storage device.Its
In, 1 is substrate, and 2 is positive pole current collections stream, and 3 is negative pole colleeting comb, and 4 is positive electrode, and 5 is negative electrode, and 6 is positive pole ear, and 7 is negative
Pole lug, 8 is dielectric substrate, and 9 is cover plate.
To make those skilled in the art more fully understand the present invention, the super capacitor of the embodiment of the present invention is described in detail below
The preparation process of device and the forming process of lithium ion battery.
Example one, ultracapacitor
(1) on polymethyl methacrylate (PMMA) plate of 40mm × 25mm, by laser engraving machine in middle position
Etch a pair of comb finger-like hollow parts as shown in Figure 2, wherein L1=8mm, L2=1mm, L3=11mm, W=12mm.Made with this
It is the miniature mask plate of ultracapacitor coating electrode.
(2) with dimethyl silicone polymer (PDMS) as substrate, and the position coating silver of the preparation setting electrode in substrate is painted
As electrode colleeting comb.0.1 gram of active carbon powder is dissolved into the absolute ethyl alcohol of 4-6ml, preferably 5ml absolute ethyl alcohols, stirred
It is uniform and carry out ultrasonic 10min, as electrode slurry.
(3) miniature mask plate is placed in substrate.It should be noted that after placing, the comb finger-like on miniature mask plate
Two identical rectangular openings of both sides longitudinal arrangement should set the aligned in position of electrode with the preparation of substrate.
(4) electrode slurry is put into spraying equipment, setting nozzle diameter is 0.3mm, and nozzle is placed in apart from substrate
Atomizing spraying is carried out at 15cm.
(5) miniature mask plate is separated with substrate, is spontaneously dried through 30min, the comb of a pair of solid is formd on substrate
Finger electrode layer.
(6) it is brushed with the conductive layer of silver paint at two and pastes copper adhesive tape respectively as lug.Preferably, two comb finger-like electricity
Layer corresponding two lug in pole extends in the opposite direction.
(7) lateral length 15mm, longitudinal length 15mm are formed between the comb finger electrode for having sprayed, thickness 0.2mm's
Polyvinyl alcohol/phosphoric acid (PVA/H3PO4) dielectric substrate.
(8) with PET (PET) film as cover plate, entered by pasting kapton adhesive tapes in basal edge
Row encapsulation, obtains ultracapacitor.
Test shows that the performance parameter of the ultracapacitor is：Capacitance 5mF, interior resistance 2.1k Ω.
Example two, lithium ion battery
(1) on polymethyl methacrylate (PMMA) plate of 50mm × 50mm, by laser engraving machine in middle position
Two rectangular openings of parallel 10mm × 4mm are etched, both along the direction alignment parallel with short side, spacing 1mm.
(2) with 60mm × 60mm crystal silicon chips as substrate.Slurry is configured in the following manner：Take 0.1 gram of cobalt acid lithium, 0.02g
Conductive black, and Kynoar/1-METHYLPYRROLIDONE that 0.3125g Kynoar (PVDF) content is 2%
(PVDF/NMP) binder system, is added in 5ml 1-METHYLPYRROLIDONE solvents, and sealing stirs and ultrasound
10min, as anode electrode slurry；Take 0.05g battery special graphite powder, 0.01g conductive blacks, and 0.156g butadiene-styrene rubber
(SBR) content is that 2% butadiene-styrene rubber/sodium carboxymethylcellulose (SBR/CMC) solvent is the binder system of water, is added to
In 5ml absolute ethyl alcohols, ultrasonic 10min is stirred and carries out, as negative electrode slurry.
(3) positive electrode layer is made.Specifically：Miniature mask plate is placed in substrate.It should be noted that after placing,
Two rectangular openings on miniature mask plate should align with positive electrode layer and the predeterminated position of positive electrode layer in substrate respectively.By its
In rectangular opening corresponding with positive electrode layer sealed with adhesive tape.Negative electrode slurry is put into spraying equipment, nozzle diameter is
0.3mm, nozzle is placed in carries out atomizing spraying at substrate 15cm.The positive electrode layer of substrate and shaping is placed in 60 in baking oven
DEG C 30min is dried, the negative electrode layer of the rectangle of solid-state is formd on substrate.
(4) positive electrode layer is made.Specifically：Adhesive tape on rectangular opening corresponding with positive electrode layer on miniature mask plate is taken
Under, and the rectangular opening for spraying negative material is sealed with adhesive tape.Anode electrode slurry is put into spraying equipment, nozzle diameter is
0.3mm, nozzle is placed in carries out atomizing spraying at substrate 15cm.Then miniature mask plate is separated with substrate, in substrate
On form solid-state rectangle anode electrode layer.Substrate and the positive and negative electrode of shaping layer are put into 90 DEG C of dryings in vacuum drying oven
12 hours, it is put into afterwards in glove box in case the preparation of battery.
(5) copper adhesive tape is pasted respectively as lug on positive and negative electrode layer.Preferably, positive and negative electrode layer is corresponding two
Lug extends in the opposite direction.
(6) lateral length 10mm, longitudinal length 10mm, the hexafluorophosphoric acid of thickness 0.1mm are formed between positive and negative electrode layer
Lithium (LiFP6)-ethylene carbonate (EC)-diethyl carbonate (DEC)-aerosil electrolyte system, solidifies 12 hours, obtains
To dielectric substrate.
(7) with aluminum plastic film as wrapper, it is packaged with sealing machine in glove box, obtains lithium ion battery.
Test shows that the performance parameter of the lithium ion battery is：Battery capacity is 3mAh.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from principle of the invention and objective
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.
Claims (12)
1. a kind of forming method of miniature energy storage device electrode, it is characterised in that comprise the following steps：
S1. patterned miniature mask plate is made by laser engraving machine；
S2., substrate is provided, and prepares electrode slurry；
S3. the miniature mask plate is placed in the substrate；
S4. the electrode slurry atomizing spraying is being covered with the substrate of the miniature mask plate；And
S5. the miniature mask plate is separated with the substrate, figure is formed in the substrate after the electrode slurry is dried
The electrode layer of change, wherein, the electrode layer is comb finger-type.
2. the forming method of miniature energy storage device electrode as claimed in claim 1, it is characterised in that the miniature mask plate
Size range is：Length is 1-100mm, and width is 1-100mm, and thickness is 0.1-5mm.
3. the forming method of miniature energy storage device electrode as claimed in claim 1, it is characterised in that the miniature mask plate
Material is polyethylene terephthalate or polymethyl methacrylate.
4. the forming method of miniature energy storage device electrode as claimed in claim 1, it is characterised in that the material of the substrate is
Polyethylene terephthalate, dimethyl silicone polymer, Kynoar, non-woven fabrics or silicon wafer.
5. the forming method of miniature energy storage device electrode as claimed in claim 1, it is characterised in that in the electrode slurry
Solute is in activated carbon, graphite powder, CNT, Graphene, cobalt acid lithium, lithium nickel cobaltate, LiMn2O4, LiFePO4 or lithium titanate
One or more of combination, solvent is water, absolute ethyl alcohol, acetone, ethylene glycol, 1-METHYLPYRROLIDONE, dimethylformamide,
The combination of one or more of dimethyl sulfoxide (DMSO).
6. the forming method of miniature energy storage device electrode as claimed in claim 1, it is characterised in that the step S5 it
Afterwards, also include:Electrode layer described in roll-in and the substrate.
7. the forming method of miniature energy storage device electrode as claimed in claim 1, it is characterised in that in the step S3 and step
Between rapid S4, also include：The position of default electrode layer on the substrate forms current collection fluid layer.
8. the forming method of miniature energy storage device electrode as claimed in claim 1, it is characterised in that miniature energy storage device is super
Level capacitor or lithium ion battery.
9. a kind of miniature energy storage device electrode, it is characterised in that be by the forming method any one of claim 1-8
Obtain.
10. a kind of forming method of miniature energy storage device, it is characterised in that comprise the following steps：
A. by the forming method of the miniature energy storage device electrode described in claim any one of 1-8, miniature energy storage device is prepared
Positive electrode and negative electrode；
B. positive pole ear and negative lug are pasted；
C. dielectric substrate is formed between the positive electrode and negative electrode；And
D. it is packaged.
The forming method of 11. miniature energy storage devices as claimed in claim 10, it is characterised in that the positive electrode and negative electrode
On same substrate, or on different substrate.
12. a kind of miniature energy storage devices, it is characterised in that obtained by the forming method described in claim 10 or 11.
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| CN111864183B (en) * | 2019-04-26 | 2022-09-20 | 中国科学院苏州纳米技术与纳米仿生研究所 | Preparation method of electrode, prepared electrode and application |
| CN110970232B (en) * | 2019-11-25 | 2022-08-12 | 中山大学 | Stretchable microelectronic device with hydrogel as substrate and preparation method thereof |
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