CN106129536A - A kind of stretchable lithium-air battery and preparation method thereof - Google Patents
A kind of stretchable lithium-air battery and preparation method thereof Download PDFInfo
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- CN106129536A CN106129536A CN201610658171.2A CN201610658171A CN106129536A CN 106129536 A CN106129536 A CN 106129536A CN 201610658171 A CN201610658171 A CN 201610658171A CN 106129536 A CN106129536 A CN 106129536A
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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
- H01M12/00—Hybrid cells; Manufacture thereof
- H01M12/04—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type
- H01M12/06—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type with one metallic and one gaseous electrode
Abstract
The invention belongs to technical field of new energies, a kind of stretchable lithium-air battery and preparation method thereof.Tradition lithium-air battery is due to its material and the restriction of structure, it is common that the more non-stretchable deformation of thick and heavy, inflexibility, it is difficult to be applicable to the energy supply demand of wearable device.The present invention constructs the lithium-air battery of new stretchable with lithium array electrode, fold aligned carbon nanotube air electrode and gel electrolyte.This stretchable lithium-air battery has the most flexible and deformation nature, and under bending in various degree, distortion and stretching condition, its chemical property can stably maintain.
Description
Technical field
The invention belongs to technical field of new energies, be specifically related to a kind of stretchable lithium-air battery and preparation method thereof.
Background technology
In recent years, the wearable electronic that develops into of flexible extensible energy device such as ultracapacitor, lithium ion battery is led
Lay a good foundation in territory, but its energy density is the most relatively low, it is difficult to meets the demand [1-3] of the long flying power of wearable device.
Lithium-air battery receives much concern [4-5] due to the energy density of its superelevation in energy storage device of future generation.But current lithium
Air cell major part is all that rigidity is inflexible, it is difficult to meet the flexible demand of wearable device.
2015 start, and have researcher to report the lithium-air battery of flexible successively, are applied by lithium-air battery
Certain effect [6-8] is achieved in wearable domain variability.But its flexible bending ability is the most weak, it is only capable of and meets simply
Bending, is all difficult to reach as distorted, even stretching for more complicated deformation.Based on this, we invent first and devise one
Brand-new stretchable lithium-air battery, its can in bending in various degree, distort and even can stablize under stretching condition
Maintain chemical property, have broad application prospects in wearable electronic field.
Summary of the invention
It is an object of the invention to provide a kind of in bending in various degree, distorting even can be steady under stretching condition
Surely stretchable lithium-air battery maintaining chemical property and preparation method thereof.
The stretchable lithium-air battery that the present invention provides, its concrete preparation process is as follows:
(1) lithium chip arrays is arranged in the elastic silicone rubber substrate being embedded with copper wire spring array, covers one layer of elasticity with holes
Silastic-layer, obtains stretchable lithium array electrode；
(2) orientation carbon nanotube film is laid in the apertured elastic silicone rubber substrate of prestretched, obtains stretchable after contraction
(i.e. in accordion) aligned carbon nanotube air electrode；
(3) above-mentioned stretchable lithium array electrode and fold aligned carbon nanotube air electrode and gel electrolyte are tied with sandwich
Structure assembles, and obtains stretchable lithium-air battery.
In the present invention, each lithium blade unit a size of 1-80 mm in the lithium array described in described step (1)2。
In the present invention, the copper wire spring diameter in the copper wire spring array described in described step (1) is general less than 2 mm(
For 0.5-2 mm), a length of 2-10 mm.
In the present invention, using copper sheet as connection between the copper wire spring in the copper wire spring array described in described step (1)
Point, join end to end arrangement；The size of this copper sheet is 1-50 mm2。
In the present invention, the preparation method of the flexible silicon rubber substrate being embedded with copper wire spring array is: used by copper wire spring array
Copper sheet is connected with each other, and arranges on the glass substrate in advance, pours a strata methylsiloxane precursor solution, after hot setting
Stripping obtains.
In the present invention, in the lithium array described in described step (1), each lithium blade unit is arranged on copper sheet respectively.
In the present invention, the pore size of apertured elastic silastic-layer, shape and the distribution described in described step (1) and lithium
The size of lithium blade unit, shape and arrange identical in chip arrays.
In the present invention, the thickness of the orientation carbon nanotube film described in described step (2) is 100 nm-100 μm.
In the present invention, described aligned carbon nanotube strip is to obtain from can spin to pull straight aligned carbon nanotube array.
Can spin aligned carbon nanotube array to be prepared by chemical vapour deposition technique, its concrete preparation method is: steamed by electron beam
Sending out plated film instrument and depositing a Rotating fields on silicon chip is Al2O3The catalyst of/Fe, wherein Al2O3Thickness be 2-20 nm, the thickness of Fe
Degree is 0.5-1.5 nm.By chemical vapour deposition technique, with argon as carrier gas, ethylene as carbon source, hydrogen as reducing agent,
It is coated with on the silicon chip of catalyst in advance and synthesizes height-oriented carbon nano pipe array.Wherein argon gas flow is 350-450
Sccm, ethylene gas flow is 60-120 sccm, and hydrogen gas flow is 30-90 sccm.Reaction temperature is 700-800
DEG C, the response time is 10-15 min.
In the present invention, the pore size of the apertured elastic silastic-layer described in described step (2) is 1-10 mm2, uniformly
It is distributed in its surface.
In the present invention, the pre-draw ratio of the elastic silicone rubber described in described step (2) is 50-200%.
In the present invention, the solute of the gel electrolyte described in described step (3) is polyethylene glycol oxide, succinonitrile and double three
Fluoromethane sulfimide lithium, solvent is dichloroethanes and acetone mixed solution.Wherein, polyethylene glycol oxide: succinonitrile: double fluoroforms
Alkane sulfimide lithium=1:(0.5-1.5): (0.5-1.5)；Dichloroethanes: acetone=40:(0.1-5).
Stretchable lithium-air battery prepared by the present invention, can in bending in various degree, distort even stretching condition
Under can stably maintain chemical property, have broad application prospects in wearable electronic field.
Accompanying drawing explanation
Fig. 1 is the structural representation of stretchable lithium-air battery in embodiment 1.
Fig. 2 is stretchable lithium-air battery discharge voltage plateau change under the conditions of repeated stretching 75% in embodiment 1.
Fig. 3 is stretchable lithium-air battery discharge voltage plateau change under the conditions of repeated flex 90 ° in embodiment 1.
Fig. 4 is stretchable lithium-air battery discharge voltage plateau change under the conditions of repeating to distort 180 ° in embodiment 1.
Detailed description of the invention
Below in conjunction with being embodied as case, exemplary explanation and help are further appreciated by the present invention, but case study on implementation has
Body details, merely to the explanation present invention, does not represent technical schemes whole under present inventive concept, and it is right therefore to should not be construed as
The restriction of the technical scheme that the present invention is total, some are In the view of technical staff, the unsubstantiality without departing from present inventive concept increase and
Change, such as, simply change or replace having the technical characteristic of same or similar technique effect, belonging to the present invention and protect model
Enclose.
Embodiment 1
Prepare lithium array electrode.By diameter 0.05 mm, four copper wire springs of long 5 mm are 16 mm with five areas2Copper sheet
Head and the tail connect, and tiling on the glass substrate, pours a strata methylsiloxane precursor solution, peel off and obtain after hot setting
It is embedded with the elastic silicone rubber substrate of copper wire spring array.It is 25 mm by five areas2Lithium sheet arrange respectively on copper sheet, formed
Lithium chip arrays.Cover what the elastic silicone rubber layer of one layer of relevant position (size and shape in hole is as lithium sheet) with holes obtained again
Stretchable lithium array electrode.
Prepare fold aligned carbon nanotube air electrode.First prepared by chemical vapour deposition technique and can spin aligned carbon nanotube
Array, its concrete preparation method is: depositing a Rotating fields on silicon chip by electron beam evaporation deposition instrument is Al2O3The catalysis of/Fe
Agent, wherein Al2O3Thickness be 3 nm, the thickness of Fe is 1.2 nm.By chemical vapour deposition technique, with argon as carrier gas, second
Alkene is as carbon source, and hydrogen, as reducing agent, is coated with on the silicon chip of catalyst in advance and synthesizes height-oriented carbon nano pipe array.
Wherein argon gas flow is 400 sccm, and ethylene gas flow is 90 sccm, and hydrogen gas flow is 60 sccm.Reaction
Temperature is 740 DEG C, and the response time is 10 min.Aligned carbon nanotube film directly from can spin aligned carbon nanotube pull out, one layer
The thickness of film is about 18 nm.The aligned carbon nanotube film of pull-out is layered on prestretched 100% with holes (area in single hole be about
2 mm2, it is evenly distributed on the surface of film) in elastic silicone rubber substrate, spread 20 layers of aligned carbon nanotube film and be about 360 to thickness
nm.Removing tensile stress makes silicone rubber substrate related aligned carbon nanotube film return back to relaxation state together, obtains fold and takes
To CNT air electrode.
Prepare gel electrolyte.By 0.35 g polyethylene glycol oxide, 0.35 g succinonitrile, 0.3 g double fluoroform sulphonyl Asia
Amine lithium, joins in 4 ml dichloroethanes and 0.1 ml acetone mixed solution, and magnetic agitation obtains gel electrolyte to being completely dissolved
Liquid.
Prepare stretchable lithium-air battery.Gel electrolyte is coated uniformly on lithium array electrode surface, fold in covering
Aligned carbon nanotube air electrode, obtains stretchable lithium-air battery after compression.Its decomposition texture schematic diagram is as shown in Figure 1.
Prepared stretchable lithium-air battery chemical property under the conditions of different deformation is as in Figure 2-4.At weight
Under multiple stretching, bending and distortion condition, the maintenance that its discharge voltage plateau all can be stable.This shows that it is at different deformation bar
Work that all can be stable under part, this has broad application prospects in wearable electronic field.
Embodiment 2
Prepare lithium array electrode.By diameter 0.05 mm, four copper wire springs of long 6 mm are 16 mm with five areas2Copper sheet
Head and the tail connect, and tiling on the glass substrate, pours a strata methylsiloxane precursor solution, peel off and obtain after hot setting
It is embedded with the elastic silicone rubber substrate of copper wire spring array.It is 36 mm by five areas2Lithium sheet arrange respectively on copper sheet, formed
Lithium chip arrays.Cover what the elastic silicone rubber layer of one layer of relevant position (size and shape in hole is as lithium sheet) with holes obtained again
Stretchable lithium array electrode.
Prepare fold aligned carbon nanotube air electrode.First prepared by chemical vapour deposition technique and can spin aligned carbon nanotube
Array, its concrete preparation method is: depositing a Rotating fields on silicon chip by electron beam evaporation deposition instrument is Al2O3The catalysis of/Fe
Agent, wherein Al2O3Thickness be 3 nm, the thickness of Fe is 1.2 nm.By chemical vapour deposition technique, with argon as carrier gas, second
Alkene is as carbon source, and hydrogen, as reducing agent, is coated with on the silicon chip of catalyst in advance and synthesizes height-oriented carbon nano pipe array.
Wherein argon gas flow is 400 sccm, and ethylene gas flow is 90 sccm, and hydrogen gas flow is 60 sccm.Reaction
Temperature is 740 DEG C, and the response time is 10 min.Aligned carbon nanotube film directly from can spin aligned carbon nanotube pull out, one layer
The thickness of film is about 18 nm.The aligned carbon nanotube film of pull-out is layered on prestretched 100% with holes (area in single hole be about
2 mm2, it is evenly distributed on the surface of film) in elastic silicone rubber substrate, spread 50 layers of aligned carbon nanotube film and be about 900 to thickness
nm.Removing tensile stress makes silicone rubber substrate related aligned carbon nanotube film return back to relaxation state together, obtains fold and takes
To CNT air electrode.
Prepare gel electrolyte.By 0.35 g polyethylene glycol oxide, 0.35 g succinonitrile, 0.3 g double fluoroform sulphonyl Asia
Amine lithium, joins in 4 ml dichloroethanes and 0.5 ml acetone mixed solution, and magnetic agitation obtains gel electrolyte to being completely dissolved
Liquid.
Prepare stretchable lithium-air battery.Gel electrolyte is coated uniformly on lithium array electrode surface, fold in covering
Aligned carbon nanotube air electrode, obtains stretchable lithium-air battery after compression.Prepared stretchable lithium-air battery is same
There is good deformation adaptability.
Embodiment 3
Prepare lithium array electrode.By diameter 0.04 mm, three copper wire springs of long 8 mm are 16 mm with four areas2Copper sheet
Head and the tail connect, and tiling on the glass substrate, pours a strata methylsiloxane precursor solution, peel off and obtain after hot setting
It is embedded with the elastic silicone rubber substrate of copper wire spring array.It is 25 mm by four areas2Lithium sheet arrange respectively on copper sheet, formed
Lithium chip arrays.Cover what the elastic silicone rubber layer of one layer of relevant position (size and shape in hole is as lithium sheet) with holes obtained again
Stretchable lithium array electrode.
Prepare fold aligned carbon nanotube air electrode.First prepared by chemical vapour deposition technique and can spin aligned carbon nanotube
Array, its concrete preparation method is: depositing a Rotating fields on silicon chip by electron beam evaporation deposition instrument is Al2O3The catalysis of/Fe
Agent, wherein Al2O3Thickness be 3 nm, the thickness of Fe is 1.2 nm.By chemical vapour deposition technique, with argon as carrier gas, second
Alkene is as carbon source, and hydrogen, as reducing agent, is coated with on the silicon chip of catalyst in advance and synthesizes height-oriented carbon nano pipe array.
Wherein argon gas flow is 400 sccm, and ethylene gas flow is 90 sccm, and hydrogen gas flow is 60 sccm.Reaction
Temperature is 740 DEG C, and the response time is 10 min.Aligned carbon nanotube film directly from can spin aligned carbon nanotube pull out, one layer
The thickness of film is about 18 nm.The aligned carbon nanotube film of pull-out is layered on prestretched 100% with holes (area in single hole be about
2 mm2, it is evenly distributed on the surface of film) in elastic silicone rubber substrate, spread 10 layers of aligned carbon nanotube film and be about 180 to thickness
nm.Removing tensile stress makes silicone rubber substrate related aligned carbon nanotube film return back to relaxation state together, obtains fold and takes
To CNT air electrode.
Prepare gel electrolyte.By 0.35 g polyethylene glycol oxide, 0.35 g succinonitrile, 0.35 g double fluoroform sulphonyl Asia
Amine lithium, joins in 4 ml dichloroethanes and 0.1 ml acetone mixed solution, and magnetic agitation obtains gel electrolyte to being completely dissolved
Liquid.
Prepare stretchable lithium-air battery.Gel electrolyte is coated uniformly on lithium array electrode surface, fold in covering
Aligned carbon nanotube air electrode, obtains stretchable lithium-air battery after compression.Prepared stretchable lithium-air battery is same
There is good deformation adaptability.
List of references
[1]Chen T., Hao R., Peng H., et al. Angew. Chem. Int. Ed., 2015, 54(2),
618-622.
[2]Huang Y., Tao J., Meng W., et al., Nano Energy, 2015, 11, 518-525.
[3]Song Z., Wang X., Lv C., et al., Sci. Rep. 2015, 5, 10988.
[4]Liu T., Leskes M., Yu W., et al., Science, 2015, 350(6260), 530-533.
[5]Lim H. D., Lee B., Zheng Y., et al., Nat. Energy, 2016, 1, 16066.
[6]Liu Q., Xu J., Xu D., et al., Nat. Common., 2015, 6, 7892.
[7]Liu Q., Liu T., Liu D., et al., Adv. Mater., 2016, DOI: 10.1002/
adma.201602800.
[8]Liu Q., Li L., Xu J., et al., Adv. Mater., 2015, 27(48): 8095-8101。
Claims (10)
1. the preparation method of a stretchable lithium-air battery, it is characterised in that concrete preparation process is as follows:
(1) lithium chip arrays is arranged in the elastic silicone rubber substrate being embedded with copper wire spring array, covers one layer of elasticity with holes
Silastic-layer, obtains stretchable lithium array electrode；
(2) orientation carbon nanotube film is laid in the apertured elastic silicone rubber substrate of prestretched, obtains stretchable after contraction
Aligned carbon nanotube air electrode；
(3) by above-mentioned stretchable lithium array electrode and fold aligned carbon nanotube air and gel electrolyte with sandwich structure group
Dress obtains stretchable lithium-air battery.
2. preparation method as claimed in claim 1, it is characterised in that in step (1), each lithium blade unit in described lithium array
A size of 1-80 mm2；Copper wire spring diameter in described copper wire spring array is less than 2 mm, a length of 2-10 mm.
3. preparation method as claimed in claim 1 or 2, it is characterised in that the copper in step (1), in described copper wire spring array
Using copper sheet as junction point between silk spring, join end to end arrangement.
4. preparation method as claimed in claim 3, it is characterised in that described copper sheet a size of 1-50 mm2；Described lithium array
In each lithium blade unit be arranged in respectively on copper sheet.
5. the preparation method as described in claim 1,2 or 4, it is characterised in that in step (1), described apertured elastic silicone rubber
The pore size of layer, shape and distribution and the size of lithium blade unit, shape in lithium chip arrays and arrange identical.
6. preparation method as claimed in claim 5, it is characterised in that in step (2), the thickness of described orientation carbon nanotube film
Degree is 100 nm-100 μm.
7. the preparation method as described in claim 1,2,4 or 6, it is characterised in that in step (2), described flexible silicon with holes
The pore size of rubber layer is 1-10 mm2, it is evenly distributed on its surface.
8. preparation method as claimed in claim 7, it is characterised in that in step (2), the prestretched of described elastic silicone rubber times
Number is 50-200%.
9. the preparation method as described in claim 1,2,4,6 or 8, it is characterised in that in step (3), described gel electrolyte
Solute is polyethylene glycol oxide, succinonitrile and double trifluoromethanesulfonimide lithium, and solvent is dichloroethanes and acetone mixed solution；Solidifying
In glue electrolyte, the mass ratio of each component is polyethylene glycol oxide: succinonitrile: double trifluoromethanesulfonimide lithium=1:(0.5-1.5):
(0.5-1.5)；Dichloroethanes: acetone=40:(0.1-5).
10. the stretchable lithium-air battery prepared by the described preparation method of one of claim 1-9.
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