CN111564635B - Flexible stretchable zinc polymer battery and preparation method thereof - Google Patents
Flexible stretchable zinc polymer battery and preparation method thereof Download PDFInfo
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- CN111564635B CN111564635B CN202010321608.XA CN202010321608A CN111564635B CN 111564635 B CN111564635 B CN 111564635B CN 202010321608 A CN202010321608 A CN 202010321608A CN 111564635 B CN111564635 B CN 111564635B
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 48
- 239000011701 zinc Substances 0.000 title claims abstract description 48
- 229920000642 polymer Polymers 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 229920001971 elastomer Polymers 0.000 claims abstract description 27
- 229920000767 polyaniline Polymers 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000003792 electrolyte Substances 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 10
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 6
- 229920003225 polyurethane elastomer Polymers 0.000 claims abstract description 5
- 235000005074 zinc chloride Nutrition 0.000 claims abstract description 5
- 239000011592 zinc chloride Substances 0.000 claims abstract description 5
- 239000007769 metal material Substances 0.000 claims abstract description 3
- VSKJLJHPAFKHBX-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 VSKJLJHPAFKHBX-UHFFFAOYSA-N 0.000 claims description 11
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- 229920005839 ecoflex® Polymers 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 238000004070 electrodeposition Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 5
- 238000010146 3D printing Methods 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 3
- 239000002135 nanosheet Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 2
- 230000007480 spreading Effects 0.000 claims description 2
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 abstract description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 239000000806 elastomer Substances 0.000 description 7
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 5
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 5
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 2
- 239000011245 gel electrolyte Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- RZLVQBNCHSJZPX-UHFFFAOYSA-L zinc sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Zn+2].[O-]S([O-])(=O)=O RZLVQBNCHSJZPX-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000011530 conductive current collector Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002073 nanorod Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
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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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/666—Composites in the form of mixed materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
- H01M10/38—Construction or manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
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- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
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- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a flexible stretchable zinc polymer battery and a preparation method thereof, relating to the technical field of flexible energy storage, wherein an electrode current collector of the battery is a planar spiral interdigital current collector, an electrolyte is a colloidal electrolyte, and the electrode is made of polyaniline and zinc metal materials; the planar spiral interdigital current collector is a composite of a carbon nano tube and polyurethane elastomer rubber; the colloidal electrolyte specifically includes zinc chloride and polyvinyl alcohol; the positive electrode is made of polyaniline with a nano rod-shaped structure, and the negative electrode is made of zinc metal with a micro rod-shaped structure. The battery has the characteristics of softness and stretchability, is suitable for the field of wearable electronics, and has good conductivity in a natural state and in a stretching state. The technical scheme provided by the invention is suitable for the use process of the wearable electronic energy storage equipment.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of flexible energy storage, in particular to a flexible stretchable zinc polymer battery and a preparation method thereof.
[ background of the invention ]
Stretchable energy storage devices are receiving more and more attention due to their special advantages of being ultra-thin, deformable, portable, etc. The stretchable energy storage device can be widely applied to health monitoring skin sensors, wearable communication equipment, roll-up displays, implantable medical treatment and the like due to unique structural advantages, and therefore, the flexible stretchable energy storage device is an important branch of modern electronic technology.
Among many choices, aqueous Zinc Ion Batteries (ZIBs) having advantages of low cost, high safety, etc. are widely considered as promising wearable electronic energy storage devices. In order to realize better application of the zinc ion battery in the field of wearable electronics, the elastic characteristic of the traditional zinc ion battery which cannot adapt to bending, flexibility and related stretchable electronic devices needs to be solved.
Accordingly, there is a need to develop a flexible stretchable zinc polymer battery and a method for preparing the same to address the shortcomings of the prior art to solve or mitigate one or more of the problems set forth above.
[ summary of the invention ]
In view of the above, the invention provides a flexible stretchable zinc polymer battery and a preparation method thereof, and the battery has the characteristics of softness and stretchability, is suitable for the field of wearable electronics, and has good conductivity in both a natural state and a stretched state.
In one aspect, the invention provides a flexible stretchable zinc polymer battery, which is characterized in that an electrode current collector of the battery is a planar spiral interdigital current collector, an electrolyte is a colloidal electrolyte, and the electrode is made of polyaniline and a zinc metal material.
The above aspect and any possible implementation manner further provide an implementation manner that the planar spiral interdigital current collector is a composite of carbon nanotubes and polyurethane elastomer rubber.
The above aspect and any possible implementation manner further provide an implementation manner, where a width of the spiral interdigital of the planar spiral interdigital current collector is 700-800 micrometers, and a length of the spiral interdigital is 1.2-1.7 millimeters.
The above aspects and any possible implementations further provide an implementation, the colloidal electrolyte specifically including: zinc chloride and polyvinyl alcohol.
The aspect and any possible implementation manner described above further provide an implementation manner, where the planar spiral interdigital current collector adopts a 3D printing technology to prepare a mold, and then pours, cures and forms by using conductive paste.
The above aspects and any possible implementations further provide an implementation, wherein the electrode comprises a positive electrode and a negative electrode; the positive electrode is made of polyaniline with a nano rod-shaped structure, and the negative electrode is made of zinc metal with a micro rod-shaped structure.
The above aspect and any possible implementation further provides an implementation in which the micron-rod-like structure of zinc metal is composed of nanosheets.
In another aspect, the present invention provides a method for preparing a flexible stretchable zinc polymer battery, wherein the method is used for preparing the flexible stretchable zinc polymer battery as described in any one of the above;
the preparation method comprises the following steps:
s1, preparing a planar spiral interdigital current collector;
s2, preparing positive and negative electrodes on the current collector prepared in the step S1;
and S3, encapsulating the current collector of the prepared electrode to obtain the flexible stretchable zinc polymer battery.
As for the above-mentioned aspect and any possible implementation manner, there is further provided an implementation manner, and the specific content of step S1 includes:
s11, placing the carbon nano tube into an N, N-dimethylformamide solution for ultrasonic dispersion, adding polyurethane elastomer rubber, and stirring to obtain conductive slurry of a current collector;
s12, preparing a spiral interdigital convex resin mold by adopting a 3D printing technology, and pouring Ecoflex rubber into the spiral interdigital convex resin mold for curing to obtain the Ecoflex rubber mold; the width of the spiral interdigital is 700-800 micrometers, and the length of the spiral interdigital is 1.2-1.7 millimeters;
s13, conducting the conductive slurry into an Ecoflex rubber mold for curing to obtain a planar spiral interdigital current collector;
s14, adhering and curing the planar spiral interdigital current collector by using styrene-isoprene-styrene;
the order of S11 and S12 is not fixed.
As for the above-mentioned aspect and any possible implementation manner, there is further provided an implementation manner, and the specific content of step S2 includes: and respectively depositing a polyaniline electrode with a rod-shaped structure and a zinc metal electrode with a rod-shaped structure on two electrodes of the current collector by adopting an electrodeposition method.
As for the above-mentioned aspect and any possible implementation manner, there is further provided an implementation manner, and the specific content of step S3 includes: and spreading a layer of colloidal electrolyte above the current collector of the prepared electrode, and packaging the battery by using styrene-isoprene-styrene rubber.
Compared with the prior art, the invention can obtain the following technical effects: the stretchable current collector material of the energy storage battery adopts a carbon nano tube/thermoplastic polyurethane elastomer conductive composite body which is conductive R in a natural stateResistance (RC)The conductive material is approximately equal to 1 kiloohm, has better retention rate of conductivity in a stretching state, and has corrosion resistance; the gel electrolyte is adopted, so that the battery does not need a diaphragm, the device has the capability of multi-axis stretchability, can be integrally stretched and is used for wearable and portable mobile equipment; the rubber packaging has the advantages of high temperature resistance and water resistance.
Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flow chart for preparing a stretchable zinc polymer battery mold using a 3D printer according to an embodiment of the present invention;
FIG. 2 is a scanning electron microscope image of a zinc micro-rod in a stretchable zinc polymer battery provided in an embodiment of the present invention;
FIG. 3 is a scanning electron microscope image of polyaniline nanorods in a stretchable zinc polymer battery provided by an embodiment of the present invention;
FIG. 4 is a graph of basic electrochemical performance of a stretchable zinc polymer battery provided by an embodiment of the present invention, i.e. a charge-discharge curve measured at different current densities;
fig. 5 is a schematic diagram of a zinc polymer battery according to an embodiment of the present invention in a stretched state.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Aiming at the defects of the prior art, the invention provides a stretchable planar spiral interdigital zinc-polyaniline cell.
The electrode current collector of the stretchable zinc polymer battery is a composite of a planar spiral interdigital carbon nanotube and thermoplastic polyurethane elastomer rubber; the electrolyte adopts zinc chloride (ZnCl)2) A colloidal electrolyte combined with polyvinyl alcohol (PVA); the electrode material is a mixture of zinc metal and a polyaniline material.
The planar spiral interdigital current collector is formed by designing a model through 3Ds MAX software, preparing a mould through a 3d printer and pouring, curing and molding the prepared conductive slurry. The positive electrode material of the stretchable battery is polyaniline with a nano rod-shaped structure, and the negative electrode is zinc metal with a micro rod-shaped structure consisting of nano sheets.
The stretchable substrate adopts an SIS (styrene-isoprene-styrene) elastomer with good flexibility, strong stretchability and instant adhesiveness, and the SIS elastomer can be well adhered with the prepared conductive current collector to form a stretchable planar spiral electrode.
Another object of the present invention is to provide the above stretchable planar spiral interdigital zinc polymer cell, which specifically comprises the following steps:
step 1, preparation of stretchable substrate-current collector (i.e. stretchable helical electrode):
ultrasonically dispersing 0.2-1 mg of carbon nano tube in 5-27 mg of N, N-dimethylformamide solution, adding 0.6-3 mg of thermoplastic polyurethane elastomer, and stirring for 8-12 hours to obtain the current collector slurry.
A spiral interdigital convex resin mold is prepared by a 3d printer, Ecoflex rubber is poured into the convex resin mold, and the spiral interdigital concave silica gel mold is formed after 0.5-2 hours of curing, as shown in figure 1. The mold is provided with a concave spiral interdigital shape, the width of the prepared interdigital is 700-800 micrometers, and the length of the prepared spiral interdigital is 1.2-1.7 millimeters (the length and the width of the interdigital can be designed by a 3D printer so as to meet different requirements). Pouring the prepared current collector slurry into an Ecoflex rubber mold, and curing for 2-5 hours at normal temperature to prepare the spiral interdigital current collector.
Dissolving a certain amount of styrene-isoprene-styrene in a toluene solution, pouring the solution above the cured planar spiral interdigital current collector, standing the solution at normal temperature for about 2 hours, curing the SIS along with the volatilization of the toluene solution, firmly bonding the stretchable substrate and the spiral interdigital current collector, and finally forming the stretchable substrate-current collector so that the current collector can be stretched in multiple directions.
Step 2, preparation of battery electrode materials:
depositing polyaniline with a rod-shaped structure on one pole of a current collector by adopting an electrodeposition method to serve as a positive pole material; the other pole is also deposited with zinc metal with a rod-shaped structure by adopting an electrodeposition method to be used as a negative electrode material.
The method for preparing the polyaniline electrode by the electrodeposition method comprises the following steps: adding about 2.4-9.8 g of concentrated sulfuric acid and about 0.9-3.7 g of aniline monomer into 50-200 ml of water solution in sequence, and carrying out ultrasonic treatment until the aniline monomer is completely dissolved. And (3) performing electrodeposition for 500-600 seconds by using one of the spiral interdigital current collectors as a working electrode, a platinum sheet electrode as a counter electrode and a saturated calomel electrode as a reference electrode under a constant potential in a range of 0.85-1V to obtain the polyaniline electrode. The scanning electron micrograph of the polyaniline electrode is shown in fig. 2.
The method for preparing the zinc electrode by the electrodeposition method comprises the following steps: 6-25 g of zinc sulfate heptahydrate, 6-25 g of anhydrous sodium sulfate and 1-4 g of boric acid are sequentially added into 50-200 ml of water solution and stirred until the zinc sulfate heptahydrate, the anhydrous sodium sulfate and the boric acid are completely dissolved. And taking the other electrode of the spiral interdigital current collector as a working electrode, a platinum sheet electrode as a counter electrode and a saturated calomel electrode as a reference electrode, and electrodepositing for 1000-1200 seconds under constant potential under-1 to-2 volts, wherein the scanning electron micrograph is shown in figure 3.
Step 3, packaging of the stretchable battery:
a thin layer of colloidal electrolyte of 6 mol/L zinc chloride and polyvinyl alcohol combination is laid on the stretchable spiral electrode after the materials are electrodeposited, the electrode materials are completely covered, and then the battery is packaged by styrene-isoprene-styrene rubber. The packaging process comprises the following steps: a sheet of styrene-isoprene-styrene rubber sheet is cured in advance, and because the sheet is made of the same material as the stretchable substrate of the battery, the edges of the sheet and the stretchable substrate of the battery can be re-dissolved by a toluene solution and then are cured together, and finally the closed stretchable battery is formed.
Tensile spiral interdigital zinc polymer battery performance test: the electrochemical performance was tested by electrochemical workstation CHI760E, the test results being shown in fig. 4. The results show that the battery has stable discharge capacity at different current densities.
Tensile property test of the tensile spiral interdigital zinc polymer battery: the test results are shown in fig. 5: the drawing shows that the cell can be stretched in different directions, and the prepared spiral interdigital zinc polymer cell is proved to have excellent stretching performance.
Compared with the prior art, the invention has the following characteristics and advantages:
(1) the stretchable current collector material adopts a carbon nano tube/thermoplastic polyurethane elastomer conductive composite body, and the conductive resistance R of the composite body is the conductive resistance R in a natural stateResistance (RC)Approximately equal to 1k omega, and the conductivity has better retention rate in a stretching state. The carbon nano tube/thermoplastic polyurethane elastomer current collector not only has tensile property, but also does not have the problem that the common polyaniline corrodes the current collector of the polyaniline battery.
(2) The planar spiral interdigital zinc polymer battery adopts gel electrolyte to ensure that the battery does not need a diaphragm, so that the device has the capability of multi-axis stretchability, can be integrally stretched and is used for wearable and portable mobile equipment.
(3) The planar spiral interdigital zinc polymer battery is packaged by rubber, and has the advantages of high temperature resistance and water resistance.
The flexible stretchable zinc polymer battery and the preparation method thereof provided by the embodiments of the present application are described in detail above. The above description of the embodiments is only for the purpose of helping to understand the method of the present application and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
As used in the specification and claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (8)
1. A flexible stretchable zinc polymer battery is characterized in that an electrode current collector of the battery is a planar spiral interdigital current collector, an electrolyte is a colloidal electrolyte, and materials of electrodes are polyaniline and zinc metal materials;
the electrode substrate of the battery is a stretchable substrate, and the electrode substrate is adhered with the planar spiral interdigital current collector to form a stretchable planar spiral electrode;
the planar spiral interdigital current collector is a composite of a carbon nano tube and polyurethane elastomer rubber;
the width of the spiral interdigital of the planar spiral interdigital current collector is 700-800 micrometers, and the length of the spiral interdigital is 1.2-1.7 millimeters.
2. A flexible stretchable zinc polymer battery according to claim 1, characterized in that the colloidal electrolyte comprises in particular: zinc chloride and polyvinyl alcohol.
3. The flexible stretchable zinc polymer battery according to claim 1, wherein the planar spiral interdigitated current collector is molded by a 3D printing technology and then poured and cured with conductive paste.
4. The flexible stretchable zinc polymer battery of claim 1, wherein the electrodes comprise a positive electrode and a negative electrode; the positive electrode is made of polyaniline with a nano rod-shaped structure, and the negative electrode is made of zinc metal with a micro rod-shaped structure.
5. A flexible stretchable zinc polymer battery according to claim 4 characterised in that the micro-rod like structure of zinc metal is composed of nano-sheets.
6. A method for preparing a flexible stretchable zinc polymer battery, wherein the method is used for preparing the flexible stretchable zinc polymer battery according to any one of claims 1 to 5;
the preparation method comprises the following steps:
s1, preparing a planar spiral interdigital current collector, and bonding the planar spiral interdigital current collector with the stretchable substrate;
s2, preparing positive and negative electrodes on the current collector prepared in the step S1;
and S3, encapsulating the current collector of the prepared electrode to obtain the flexible stretchable zinc polymer battery.
7. The method for preparing a flexible stretchable zinc polymer battery according to claim 6, wherein the specific content of the step S1 includes:
s11, placing the carbon nano tube into an N, N-dimethylformamide solution for ultrasonic dispersion, adding polyurethane elastomer rubber, and stirring to obtain conductive slurry of a current collector;
s12, preparing a spiral interdigital convex resin mold by adopting a 3D printing technology, and pouring Ecoflex rubber into the spiral interdigital convex resin mold for curing to obtain the Ecoflex rubber mold; the width of the spiral interdigital is 700-800 micrometers, and the length of the spiral interdigital is 1.2-1.7 millimeters;
s13, conducting the conductive slurry into an Ecoflex rubber mold for curing to obtain a planar spiral interdigital current collector;
s14, adhering and curing the planar spiral interdigital current collector by using styrene-isoprene-styrene;
the order of S11 and S12 is not fixed.
8. The method for preparing a flexible stretchable zinc polymer battery according to claim 6, wherein the specific content of the step S2 includes: depositing a polyaniline electrode with a rod-shaped structure and a zinc metal electrode with a rod-shaped structure on two electrodes of a current collector by an electrodeposition method respectively;
the specific content of step S3 includes: and spreading a layer of colloidal electrolyte above the current collector of the prepared electrode, and packaging the battery by using styrene-isoprene-styrene rubber.
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