CN106450309A - Preparation method for flexible and bendable aluminum ion battery - Google Patents
Preparation method for flexible and bendable aluminum ion battery Download PDFInfo
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- CN106450309A CN106450309A CN201610845761.6A CN201610845761A CN106450309A CN 106450309 A CN106450309 A CN 106450309A CN 201610845761 A CN201610845761 A CN 201610845761A CN 106450309 A CN106450309 A CN 106450309A
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a preparation method for a flexible and bendable aluminum ion battery. The preparation method comprises the steps of extruding graphene oxide or a graphene oxide inorganic salt mixed solution to rotary inorganic salt solution coagulating bath in spinning equipment with certain diameter; then filtering and collecting short fibers from the coagulating bath by a filtering net, and lapping joint the short fibers into graphene oxide cloth; reducing the obtained graphene oxide cloth in a reduction temperature to obtain graphene cloth; and then assembling the obtained graphene cloth positive electrode material, a diaphragm, a negative electrode, an electrolyte and a battery shell to obtain the aluminum ion battery taking the graphene cloth as the positive electrode material. The flexible and bendable aluminum ion battery is green, environment-friendly and low in cost, and suitable for continuous and controllable large-scale industrial production; under the premise of ensuring relatively high energy density, power density and cycle life of the aluminum ion battery, the flexibility and bendable property of the battery are realized; and the flexible and bendable aluminum ion battery is applicable to the field of high-safety wearable energy storage devices.
Description
Technical field
The present invention relates to the preparation side of the aluminium ion battery as positive electrode for the Graphene cloth to have flexible
Method.
Background technology
With scientific and technological progress, the electronic equipment such as smart mobile phone, Intelligent bracelet emerges in an endless stream, and its power-supply battery is also carried
Go out new requirement.Lithium ion battery as novel secondary battery, because the advantages of its self discharge is little, specific discharge capacity is high increasingly
Favored.However, the natural abundance of elemental lithium is low, the defect such as in the air is inflammable, easy formation dendrite limited to it daily just
Application in portable device.The negative material of aluminium ion battery is aluminum metal or alloy, and aluminium element is in nature rich reserves
And it in atmosphere can stable existence.Above advantage makes aluminium ion battery have extensive answering in flexible portable's electronic equipment
Use prospect.
Graphene was found so far from 2004, due to its superior conduction, heat conductivility and high intensity, Large ratio surface
Amass so that it is widely used in fields such as battery, capacitor, transistor, NF membrane.But pure graphite alkenes positive pole
Material is not also applied in aluminium ion field of batteries, especially flexible aluminium ion battery.Positive pole material commonly used by current aluminium ion battery
Material includes：Pyrolytic graphite, nickel sulfide graphene composite material etc..But the preparation of these positive electrodes is complicated, high cost does not possess
Large-scale production characteristic and there is no flexible it is impossible to meet wearing portable equipment requirement.
Content of the invention
The purpose of the present invention is to propose to a kind of preparation method of the aluminium ion battery of flexible and high-energy-density, it is
New aluminium ion cell positive material pattern provides new thinking.
The purpose of the present invention is achieved through the following technical solutions：A kind of preparation of the aluminium ion battery of flexible
Method, comprises the steps：
1）Add graphene oxide in solvent, ultrasonic disperse processes and obtains graphene oxide concentration for 0.1mg mL-1-
20mg•mL-1Graphene oxide solution；
2）In the coagulating bath that graphene oxide solution is expressed into rotation from the spinneret of 30 500 micron diameters；
3）Collect coagulating bath with strainer filtering, the graphene oxide fiber in coagulating bath is overlapped to form graphene oxide on filter screen
Cloth, then graphene oxide is arranged in reducing environment, and reduction obtains the Graphene cloth of high conductivity；
4）Using the Graphene cloth of gained as positive pole, with the assembling of barrier film, negative pole, electrolyte and battery case, obtain with Graphene cloth
Flexible aluminium ion battery for positive electrode.
A kind of preparation method of the aluminium ion battery of flexible, comprises the steps：
1）Graphene oxide and inorganic salt are added in solvent, ultrasonic disperse processes and obtains graphene oxide concentration for 0.1mg
mL-1-20mg•mL-1Graphene oxide solution；
2）In the coagulating bath that graphene oxide solution is expressed into rotation from the spinneret of 30 500 micron diameters；
3）Collect coagulating bath with strainer filtering, the graphene oxide fiber in coagulating bath is overlapped to form graphene oxide on filter screen
Cloth, then graphene oxide is arranged in reducing environment, and reduction obtains the Graphene cloth of high conductivity；
4）Using the Graphene cloth of gained as positive pole, with the assembling of barrier film, negative pole, electrolyte and battery case, obtain with Graphene cloth
Flexible aluminium ion battery for positive electrode.
Further, the concentration of described inorganic salt be 1 ~ 5mg/mL, by ammonium hydrogen carbonate, ammonium carbonate, one kind of ammonium chloride or
The multiple mixing composition in any proportion of person
Further, described step 1）Solvent mainly by deionized water, N-Methyl pyrrolidone, DMF,
N,N-dimethylacetamide, acetone, butanone, pyridine, dimethyl sulfoxide one or more according to arbitrary proportion mix composition.
Further, coagulating bath is selected from ethyl acetate or inorganic salt solution, and in described inorganic salt solution, solute is inorganic
Salt, concentration is 1wt% 10wt%, and inorganic salt is selected from calcium chloride, magnesium chloride, ammonium chloride, sodium hydroxide, potassium hydroxide；Solvent is
The water of ethanol or any proportioning and alcohol mixed solution；The rotating speed of coagulating bath is in 200 1200 RPM.
Further, described step 3）Reducing environment be selected from that mass fraction is the hydrazine hydrate solution of 1%-40%, quality divides
Number is the ascorbic acid sodium water solution of 1%-40%, mass fraction is the phenylhydrazine aqueous solution of 1%-40%, mass fraction is 1%-40%'s
Hydrobromic acid aqueous solution, mass fraction are the tea polyphenols aqueous solution of 1%-40%, mass fraction is the aqueous solution of urea of 1%-40%, quality
Fraction is the sodium thiosulfate solution of 1%-20%, mass fraction is the hydriodic acid aqueous solution of 1%-40%, mass fraction is 1%-
40% aqueous acetic acid, 200 3000 DEG C of thermal reduction.
Further, described step 3）Described Graphene cloth thickness is 50 microns to 2 millimeters, and conductivity is more than
104S/m.
Further, described step 4）Negative pole be aluminium alloy or aluminum metal；Barrier film is glass carbon fiber, PP barrier film or PE every
Film；Electrolyte is selected from imidazoles chloroaluminate ionic liquid, quaternary ammonium salt chloroaluminate ionic liquid.
The present invention compared with prior art has the advantage that：The aluminum cell of the present invention is melted certainly using Graphene chopped fiber
Close the carbon felt-like material of overlap joint, compared to common membrane material or pyrolyzing graphite material, it is between fiber and fiber
There are a lot of spaces, be conducive to the transmission of high viscosity low temperature molten salt electrolysis liquid, there is provided excellent high rate performance, discharge and recharge times
Rate can reach 50C；In single fiber, graphene sheet layer is Close stack together it is ensured that the mass density of battery again
All larger with bulk density.On the other hand, due to the high porosity between fiber, be conducive to aluminum ions absorption, there is provided class
The fast charging and discharging characteristic of capacitor and high power density；Due to the graphene sheet layer of fibrous inside high-specific surface area and its
Close stack, is that aluminum ions embedding provides active reaction sites, there is provided the high-energy-density of class battery.Meanwhile, positive pole
Material is formed from merging overlap joint by Graphene chopped fiber, and interfibrous merging point provides excellent mechanical property so that it has
Well bending property and certain elasticity, material can any bending fold.Based on above feature, the present invention prepares
Aluminium ion battery has high-energy-density 60Wh/Kg and takes into account high power density 30W/Kg, the cycle life up to 10000 times, 50C
Fast charging and discharging performance, take into account advantage and the flexible bending performance of ultracapacitor and battery.Its excellent electric property
The aluminium ion battery making the method preparation with mechanical property has prospect in wearable bile devices.
The preparation method that the present invention adopts, compared to using materials such as pyrolytic graphites, its technique environmental protection, low cost,
Macroscopic form is controlled, can be directly applied for existing battery industry assembling process at present.
Brief description
Fig. 1 is the flexible aluminium ion battery schematic diagram of present device；
Fig. 2 is the cycle performance curve under the conditions of 50C constant current charge-discharge for the flexible aluminium ion battery of present device；
Fig. 3 is the scanning electron microscope (SEM) photograph of the Graphene measuring fiber in example 1 through hydrazine hydrate reduction；
Fig. 4 a is the surface sweeping electron microscope of the Graphene measuring fiber in example 2 through thermal reduction；Fig. 4 b is the stone in example 2 through thermal reduction
The surface sweeping electron microscope in black alkene cloth section.
Specific embodiment
Below by embodiment, the present invention is specifically described, the present embodiment is served only for the present invention is done further
Bright it is impossible to be interpreted as limiting the scope of the invention, those skilled in the art makes according to present disclosure
Nonessential change and adjustment, belong to protection scope of the present invention.
Embodiment 1：
1）The graphene oxide of 1 weight portion is added in the deionized water of 1000 weight portions, the ultra sonic bath of 20Hz processes 1
Hour, obtaining concentration is 1mg mL-1Graphene oxide dispersion；
2）To be expressed in the coagulating bath of rotation in the spinneret of 100 microns of graphene oxide dispersion diameter, coagulating bath is joined
Fang Shi：Ethanol is 3 with the volume ratio of water:1, the mass fraction of calcium chloride is 5%.Coagulating bath rotating speed is 1000RPM；
3）Collect coagulating bath with strainer filtering, the graphene oxide fiber (fibre length is at 8 ~ 10 centimetres) in coagulating bath is in filter
It is overlapped to form graphene oxide cloth on the net.Lyophilizing after graphene oxide arrangement is dried 2 hours at room temperature, then by the oxygen after lyophilizing
Graphite alkene is arranged in 500mL hermetic container, and bottom instills the hydrazine hydrate aqueous solution that 5mL concentration is 40wt%, and at 80 DEG C also
Former 8 hours, obtain the Graphene cloth of high conductivity；
4）The square Graphene cloth of gained being cut into 10cm*10cm as positive pole, with fibreglass diaphragm, aluminium foil negative pole pole
Piece, AlCl3/ [EMIm] Cl ionic liquid and the assembling of aluminum plastic film soft-package battery shell, obtain soft with Graphene cloth as positive electrode
The flexible aluminium ion battery of property.
As shown in Figure 4 to the morphology characterization of the Graphene cloth of this kind of method preparation.Show that graphene fiber internal voids are equal
Even, be conducive to adsorbing aluminium ion, strengthen capacitive properties, improve charge-discharge velocity.Its conductivity is about 200S/cm.
The coagulating bath of this embodiment is aqueous phase, by scanning electron microscope (SEM) photograph as can be seen that the fiber obtaining is more loose, porosity
Higher.Its chemical property is as shown in Figure 2 a.Because porosity is high, the ability of its adsorption activity material is strong, so capacitive properties
Proportion will height compared with example 2.Specific capacity during 5C is about 110mAh/g, and specific capacity during 50C is about 90mAh/g, but surely
Determine cycle life and only have 3000 circles.This is the contact area with electrolyte because the graphene fiber cloth porosity of aqueous phase is higher
Bigger it is provided that avtive spot more, so specific capacity improves.
Embodiment 2：
1）The graphene oxide of 5 weight portions is added in the DMF of 1000 weight portions, ultrasonic in 50Hz
Process 0.5 hour in bath, obtain concentration for 5mg mL-1Graphene oxide dispersion；
2）To be expressed in the coagulating bath of rotation in the spinneret of 130 microns of graphene oxide dispersion diameter, coagulating bath is
Ethyl acetate solution.Coagulating bath rotating speed is 700RPM；
3）Collect coagulating bath with strainer filtering, the graphene oxide fiber (about 10 centimetres of fibre length) in coagulating bath is in filter screen
On be overlapped to form graphene oxide cloth.Graphene oxide is arranged after being dried 5 hours at room temperature, then be placed in 60 DEG C of oven dryings and remove
Remove solvent.Dried graphene oxide is arranged in nitrogen atmosphere, graphitizing furnace is heated to 2800 DEG C and keeps one little
When, obtain the Graphene cloth of high conductivity；
4）The square Graphene cloth of gained being cut into 10cm*10cm as positive pole, with fibreglass diaphragm, aluminium foil negative pole pole
Piece, AlCl3/ [EMIm] Cl ionic liquid and the assembling of aluminum plastic film soft-package battery shell, obtain soft with Graphene cloth as positive electrode
The flexible aluminium ion battery of property.
As shown in Figure 4 to the morphology characterization of the Graphene cloth of this kind of method preparation.Show thermal reduction fibrous inside Graphene
Lamella stacking is fine and close, is conducive to aluminum ions embedded and deintercalation, improves energy density.Its conductivity is about 500S/cm.
The coagulating bath of this embodiment is organic faciess, by scanning electron microscope (SEM) photograph as can be seen that the fiber obtaining is comparatively dense, graphite
Closely, porosity is less compared with embodiment 1 for alkene lamella stacking.Its chemical property is as shown in Figure 2 b.Because porosity is low, its class electricity
Pond property proportion is higher, and class capacitive properties accounting example is relatively low.Specific capacity during 5C is about 95mAh/g, specific capacity during 50C
It is about 75mAh/g.The stable circulation life-span reaches 10000 circles.
Embodiment 3：
1）By the graphene oxide of 1 weight portion, the ammonium hydrogen carbonate inorganic salt of a weight portion is added to the deionization of 1000 weight portions
In water, process 1 hour in the ultra sonic bath of 20Hz, obtain concentration for 1mg mL-1Graphene oxide dispersion；
2）To be expressed in the coagulating bath of rotation in the spinneret of 150 microns of graphene oxide dispersion diameter, coagulating bath is joined
Fang Shi：Ethanol is 3 with the volume ratio of water:1, the mass fraction of calcium chloride is 5%.Coagulating bath rotating speed is 1000RPM；
3）Collect coagulating bath with strainer filtering, the graphene oxide fiber (fibre length is at 8 ~ 10 centimetres) in coagulating bath is in filter
It is overlapped to form graphene oxide cloth on the net.Lyophilizing after graphene oxide arrangement is dried 2 hours at room temperature, then by the oxygen after lyophilizing
Graphite alkene is arranged in 500mL hermetic container, and it is 40wt% hydrazine hydrate aqueous solution that bottom instills 5mL concentration, and reduces at 80 DEG C
8 hours, obtain the Graphene cloth of high conductivity；
4）The square Graphene cloth of gained being cut into 10cm*10cm as positive pole, with fibreglass diaphragm, aluminium foil negative pole pole
Piece, AlCl3/ [EMIm] Cl ionic liquid and the assembling of aluminum plastic film soft-package battery shell, obtain soft with Graphene cloth as positive electrode
The flexible aluminium ion battery of property.
As shown in Figure 4 to the morphology characterization of the Graphene cloth of this kind of method preparation.Show that hydrazine hydrate fibrous inside space is equal
Even, be conducive to adsorbing aluminium ion, strengthen capacitive properties, improve charge-discharge velocity.Its conductivity is about 200S/cm.
Embodiment 4
A kind of preparation method of the aluminium ion battery of flexible, comprises the steps：
1）Add graphene oxide in deionized water, ultrasonic disperse processes and obtains concentration for 0.1mg mL-1Graphite oxide
Alkene solution；
2）In the coagulating bath that graphene oxide solution is expressed into rotation from the spinneret of 30 micron diameters；Coagulating bath is acetic acid
Ethyl ester；The rotating speed of coagulating bath is in 200RPM.
3）Collect coagulating bath with strainer filtering, the graphene oxide fiber (fibre length is at 24 centimetres) in coagulating bath exists
Graphene oxide cloth is overlapped to form on filter screen, then by graphene oxide hydroiodic acid solution reduction, reduction obtains high conductivity
Graphene cloth；
4）Using the Graphene cloth of gained as positive pole, with the assembling of barrier film, negative pole, electrolyte and battery case, obtain with Graphene cloth
Flexible aluminium ion battery for positive electrode.After tested, there is preferable cycle life and charge-discharge performance.
Embodiment 5
A kind of preparation method of the aluminium ion battery of flexible, comprises the steps：
1）Add graphene oxide in N-Methyl pyrrolidone, ultrasonic disperse processes and obtains concentration for 20mg mL-1Oxygen
Graphite alkene solution；
2）In the coagulating bath that graphene oxide solution is expressed into rotation from the spinneret of 500 micron diameters；Coagulating bath is second
Acetoacetic ester；The rotating speed of coagulating bath is in 1200 RPM.
3）Collect coagulating bath with strainer filtering, the graphene oxide fiber (fibre length is at 8 10 centimetres) in coagulating bath
Graphene oxide cloth is overlapped to form on filter screen, after by graphene oxide hydroiodic acid solution reduction, reduction obtains high conductivity
Graphene cloth；
4）Using the Graphene cloth of gained as positive pole, with the assembling of barrier film, negative pole, electrolyte and battery case, obtain with Graphene cloth
Flexible aluminium ion battery for positive electrode.After tested, there is preferable cycle life and charge-discharge performance.
Embodiment 6
A kind of preparation method of the aluminium ion battery of flexible, comprises the steps：
1）Graphene oxide and ammonium hydrogen carbonate are added in dimethyl sulfoxide, ultrasonic disperse processes and obtains concentration for 0.1mg mL-1
Graphene oxide solution；The concentration of ammonium hydrogen carbonate is 1 ~ 5mg/mL；
2）In the coagulating bath that graphene oxide solution is expressed into rotation from the spinneret of 30 micron diameters；Coagulating bath is concentration
For 8wt% aqueous ammonium chloride solution；The rotating speed of coagulating bath is in 200 1200 RPM.
3）Collect coagulating bath with strainer filtering, the graphene oxide fiber (fibre length is at 24 centimetres) in coagulating bath
After graphene oxide cloth is overlapped to form on filter screen, graphene oxide hydroiodic acid solution reduction, reduction are obtained the stone of high conductivity
Black alkene cloth；
4）Using the Graphene cloth of gained as positive pole, with the assembling of barrier film, negative pole, electrolyte and battery case, obtain with Graphene cloth
Flexible aluminium ion battery for positive electrode.After tested, there is preferable cycle life and charge-discharge performance.
Embodiment 7
A kind of preparation method of the aluminium ion battery of flexible, comprises the steps：
1）Graphene oxide and ammonium chloride are added in deionized water, ultrasonic disperse processes and obtains concentration for 0.1mg mL-1-
20mg•mL-1Graphene oxide solution；The concentration of described ammonium chloride is 1 ~ 5mg/mL.
2）In the coagulating bath that graphene oxide solution is expressed into rotation from the spinneret of 500 micron diameters；Coagulating bath
For ethyl acetate；
3）Collect coagulating bath with strainer filtering, the graphene oxide fiber (fibre length is at 8 10 centimetres) in coagulating bath is in filter
Be overlapped to form graphene oxide cloth on the net, after by graphene oxide hydroiodic acid solution reduction, reduction obtains the graphite of high conductivity
Alkene cloth；
4）Using the Graphene cloth of gained as positive pole, with the assembling of barrier film, negative pole, electrolyte and battery case, obtain with Graphene cloth
Flexible aluminium ion battery for positive electrode.After tested, there is preferable cycle life and charge-discharge performance.
Claims (8)
1. a kind of preparation method of the aluminium ion battery of flexible is it is characterised in that comprise the steps：
1）Add graphene oxide in solvent, ultrasonic disperse processes and obtains graphene oxide concentration for 0.1mg mL-1-
20mg•mL-1Graphene oxide solution；
2）In the coagulating bath that graphene oxide solution is expressed into rotation from the spinneret of 30 500 micron diameters；
3）Collect coagulating bath with strainer filtering, the graphene oxide fiber in coagulating bath is overlapped to form graphene oxide on filter screen
Cloth, then graphene oxide is arranged in reducing environment, and reduction obtains the Graphene cloth of high conductivity；
4）Using the Graphene cloth of gained as positive pole, with the assembling of barrier film, negative pole, electrolyte and battery case, obtain with Graphene cloth
Flexible aluminium ion battery for positive electrode.
2. a kind of preparation method of the aluminium ion battery of flexible is it is characterised in that comprise the steps：
1）Graphene oxide and inorganic salt are added in solvent, ultrasonic disperse processes and obtains graphene oxide concentration for 0.1mg
mL-1-20mg•mL-1Graphene oxide solution；
2）In the coagulating bath that graphene oxide solution is expressed into rotation from the spinneret of 30 500 micron diameters；
3）Collect coagulating bath with strainer filtering, the graphene oxide fiber in coagulating bath is overlapped to form graphene oxide on filter screen
Cloth, then graphene oxide is arranged in reducing environment, and reduction obtains the Graphene cloth of high conductivity；
4）Using the Graphene cloth of gained as positive pole, with the assembling of barrier film, negative pole, electrolyte and battery case, obtain with Graphene cloth
Flexible aluminium ion battery for positive electrode.
3. the preparation method of the aluminium ion battery of flexible according to claim 2 is it is characterised in that described step
In 1, the concentration of inorganic salt is 1 ~ 5mg/mL, by ammonium hydrogen carbonate, ammonium carbonate, ammonium chloride one or more mix in any proportion
It is combined into.
4. the aluminium ion battery of flexible as claimed in claim 1 or 2 preparation method it is characterised in that：Described step
Rapid 1）Solvent mainly by deionized water, N-Methyl pyrrolidone, DMF, N,N-dimethylacetamide, third
Ketone, butanone, pyridine, dimethyl sulfoxide one or more according to arbitrary proportion mix composition.
5. the aluminium ion battery of the flexible as described in claim 1 preparation method it is characterised in that：Coagulating bath is selected
From in ethyl acetate or inorganic salt solution, described inorganic salt solution, solute is inorganic salt, and concentration is 1wt% 10wt%, inorganic salt
Selected from calcium chloride, magnesium chloride, ammonium chloride, sodium hydroxide, potassium hydroxide etc.；Solvent is ethanol or the water of any proportioning and ethanol mixes
Close solution；The rotating speed of coagulating bath is in 200 1200 RPM.
6. the aluminium ion battery of flexible as claimed in claim 1 or 2 preparation method it is characterised in that：Described step
Rapid 3）Reducing environment be selected from mass fraction be the hydrazine hydrate solution of 1%-40%, mass fraction be the sodium ascorbate water of 1%-40%
Solution, mass fraction are the phenylhydrazine aqueous solution of 1%-40%, mass fraction is the hydrobromic acid aqueous solution of 1%-40%, mass fraction is
The tea polyphenols aqueous solution of 1%-40%, mass fraction are the aqueous solution of urea of 1%-40%, mass fraction is the thiosulfuric acid of 1%-20%
Sodium water solution, mass fraction are the hydriodic acid aqueous solution of 1%-40%, mass fraction is the aqueous acetic acid of 1%-40%, 200
3000 DEG C of thermal reduction.
7. the aluminium ion battery of the flexible as described in claim 1 or 2 preparation method it is characterised in that：Described step
Rapid 3）Described Graphene cloth thickness is 50 microns to 2 millimeters, and conductivity is more than 104S/m.
8. the aluminium ion battery of flexible as claimed in claim 1 or 2 preparation method it is characterised in that：Described step
Rapid 4）Negative pole can be aluminium alloy or aluminum metal；Barrier film can be glass carbon fiber, PP barrier film or PE barrier film；Electrolyte can be
Imidazoles chloroaluminate ionic liquid or quaternary ammonium salt chloroaluminate ionic liquid.
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|---|---|---|---|---|
| CN107706007A (en) * | 2017-10-13 | 2018-02-16 | 北京航空航天大学 | A kind of aquo-lithium ion ultracapacitor based on graphene and organic molecule |
| WO2019000990A1 (en) * | 2017-06-30 | 2019-01-03 | 杭州高烯科技有限公司 | Method for fabricating graphene film positive electrode material, and application thereof in aluminum-ion battery |
| CN110299508A (en) * | 2019-06-24 | 2019-10-01 | 盐城市新能源化学储能与动力电源研究中心 | A kind of 3D graphite alkylene carbon anode full battery and preparation method thereof |
| WO2020155568A1 (en) * | 2019-02-01 | 2020-08-06 | 东北大学 | Preparation method and use method for positive electrode material for high-capacity aluminum battery |
| CN112164828A (en) * | 2020-09-22 | 2021-01-01 | 同济大学 | Fibrous flexible aluminum ion battery and preparation method thereof |
| CN112647158A (en) * | 2019-10-10 | 2021-04-13 | 中国科学技术大学 | Macroscopic quantity preparation method of graphene-based micron rod |
| CN112652741A (en) * | 2019-10-10 | 2021-04-13 | 中国科学技术大学 | Preparation method of graphene-based composite micron rod loaded with positive active material |
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