CN108987702A - Integrated electrode material and its preparation and application based on composite aerogel - Google Patents
Integrated electrode material and its preparation and application based on composite aerogel Download PDFInfo
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- CN108987702A CN108987702A CN201810778374.4A CN201810778374A CN108987702A CN 108987702 A CN108987702 A CN 108987702A CN 201810778374 A CN201810778374 A CN 201810778374A CN 108987702 A CN108987702 A CN 108987702A
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/386—Silicon or alloys based on silicon
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- 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
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- H—ELECTRICITY
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- H01M4/02—Electrodes composed of, or comprising, active material
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- H01M4/60—Selection of substances as active materials, active masses, active liquids of organic compounds
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- H—ELECTRICITY
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- 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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- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The preparation method of the present invention relates to a kind of integrated electrode material based on composite aerogel: carbon nanotube, silicon powder, metal oxide, polyvinylpyrrolidone, sodium alginate and glucolactone are mixed in water, hydrogel is obtained after fully reacting；Aeroge is obtained after hydrogel is freeze-dried, and is then 10 in pressure‑ 6It under the vacuum condition of Pa-4Pa, is heated at 100 DEG C -200 DEG C, metal oxide is reduced into metal, obtain the integrated electrode material based on composite aerogel.The present invention also provides a kind of integrated electrode materials using prepared by above-mentioned preparation method based on composite aerogel, including composite aerogel, composite aerogel includes sodium alginate aeroge and the metallic particles being distributed in sodium alginate aeroge, carbon nanotube and silicon powder.The present invention has prepared the integrated electrode material based on composite aerogel under vacuum, cryogenic conditions, is not necessarily to binder and collector, and electrode material has good flexible, mechanical property and chemical property.
Description
Technical field
The present invention relates to electrode material preparation technical field more particularly to a kind of integrated electrodes based on composite aerogel
Material and its preparation and application.
Background technique
It is well known that energy problem is the big crisis that current people face, and the energy storage system of efficient green is to solve
The effective means of this problem.The daily mancarried electronic aid such as small to mobile, computer, digital camera, arrives greatly electric car, even
It is extensive energy storage power grid, battery all plays the effect that do not replace.Especially since the 1990s, with Sony
Company and use of the Moli company of Canada to graphite cathode, lithium ion battery have been obtained universal on a large scale and have widely been answered
With.However, development manufacture is smaller, lighter, thinner, can bear with the continuous progress of science and technology with the continuous growth of people's demand
The lithium ion battery of various deformation is particularly important.However, currently used electrode material requires greatly binder and afflux
Body, active material, which is easy to fall off with collector, in the process of bending leads to capacity attenuation, therefore, the development of integrated electrode material
Become particularly important.Application No. is 201711249261.7 Chinese patents to disclose a kind of combination electrode material and its preparation side
Method and application prepare combination electrode material, but use material prepared by the above method using Sodium Alginate Hydrogel Films as skeleton
Expect to be powdered, material mechanical performance is poor, cannot form a film, and can not be applied in flexible battery.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of integrated electrode material based on composite aerogel
Material and its preparation and application, the present invention have prepared the integrated electrode based on composite aerogel using simple, efficient method
Material is not necessarily to binder and collector, and electrode material has good flexibility, bent, and has good mechanical property
And chemical property.
On the one hand, the preparation method of the present invention provides a kind of integrated electrode material based on composite aerogel, packet
Include following steps:
(1) carbon nanotube, silicon powder, metal oxide, polyvinylpyrrolidone, sodium alginate and glucolactone are existed
It is mixed in water, hydrogel is obtained after fully reacting, wherein silicon powder partial size is nanoscale or micron order；
(2) aeroge is obtained after being freeze-dried hydrogel, is then 10 in pressure-6Under the vacuum condition of Pa-4Pa, 100
It is heated at DEG C -200 DEG C, metal oxide is reduced into metal, obtains the integrated electrode material based on composite aerogel.
Further, in step (1), the diameter of carbon nanotube is 100-300nm (preferably 300nm), and length is 5 μm.
Further, in step (1), metal oxide is one or more of copper oxide, zinc oxide and ferroso-ferric oxide.
Further, in step (1), the mass ratio of carbon nanotube and metal oxide is 1:1-1:5.
Further, in step (1), the mass ratio of silicon powder and metal oxide is 1:1-1:5.
Further, in step (1), the mass ratio of metal oxide and sodium alginate is 1:2-1:4.
Further, in step (1), the mass ratio of sodium alginate and glucolactone is 1:1.5-1:5.
Further, in step (1), the mass ratio of sodium alginate and polyvinylpyrrolidone is 1:1-6:1.
Further, in step (1), the viscosity of sodium alginate is 20cps-1194cps.
Further, in step (1), first by carbon nanotube, silicon powder, metal oxide, polyvinylpyrrolidone in water
In in ultrasonic 30min mix.Then sodium alginate is added and stirs 6h, is eventually adding after glucolactone stands 48h and obtains water
Gel.
Further, in step (2), sublimation drying is 1-2 days.
Further, in step (2), heated from room temperature to 100 DEG C -200 DEG C, heating rate be 1 DEG C/
min-10℃/min。
Further, in step (2), heating time 1h-4h.
In above method, the effect of carbon nanotube is to provide conductive network and increases mechanical property.The effect of silicon powder is to mention
For capacity.Metal oxide is reduced to metallic particles under vacuum conditions during the preparation process, in use, can in electrode material
Play the role of the collector in conventional coating process.Polyvinylpyrrolidone be used as in the present invention dispersing agent and it is main also
Former agent, sodium alginate are used to form hydrogel, as the supporter and binder of integrated electrode material, glucolactone
Effect be sustained release agent.
In the present invention, the preparation principle of the integrated electrode material based on composite aerogel is as follows:
Sodium alginate composite hydrogel is prepared using method for releasing in situ, glucolactone is dissolved in Shui Shihui hydrolysis Portugal
Grape saccharic acid, when metal oxide is added, gluconic acid meeting and reactive metal oxide slowly release metal cation,
And there is-COO in the molecule of sodium alginate-1Group, the Na when sodium alginate encounters metal cation, in sodium alginate+Meeting
Exchanged with these cations, make sodium alginate soln to gel conversion, freeze-drying can in hydrogel dries out solvent
While keep sodium alginate structure not collapse, thus can be formed with sodium alginate aeroge flexible.
In addition, it can be seen that, sodium alginate framework collapse occurs at about 220 DEG C according to sodium alginate TGA figure, but lazy
It is difficult for metal oxide to be reduced into metal simple-substance at 220 DEG C or less in property atmosphere, thus electrode material is due to electric conductivity
Difference can not charge and discharge, the metal oxide in electrode material can be reduced into metal simple-substance at 220 DEG C or less, increased by vacuum environment
It can guarantee that sodium alginate skeleton is not broken again while being powered on pole material conductivity, it is uniform complete to advantageously form structure
Sodium alginate aeroge, in addition the connection function of carbon nanotube, metal simple-substance particle is connected instead of conventional coating process
The effect of middle collector can prepare the integrated electrode without binder, conductive black and collector in this way
Material.
On the other hand, the present invention also provides it is a kind of using prepared by above-mentioned preparation method based on composite aerogel
Integrated electrode material, including composite aerogel, composite aerogel include sodium alginate aeroge and are distributed in sodium alginate
Metallic particles, carbon nanotube and silicon powder in aeroge.
Further, electrode material with a thickness of 50-1000 μm.
Further, the diameter of carbon nanotube is 100-300nm, and length is 5 μm.
Further, metallic particles is one or more of copper, zinc and iron.
Further, silicon powder partial size is nanoscale or micron order.
It yet still another aspect, the present invention be also claimed the above-mentioned integrated electrode material based on composite aerogel prepare it is soft
Application in property battery.
Flexible battery refers to the battery that can be used with alternating bending.Due to one based on composite aerogel of the invention
Body polarizing electrode material has good mechanical property, flexibility and chemical property, therefore can be applied to the preparation of flexible battery.
Further, the above-mentioned integrated electrode material based on composite aerogel and diaphragm, electrolyte combination, can also group
Dress up half-cell and full battery.
According to the above aspect of the present invention, the present invention has at least the following advantages:
It uses sodium alginate for template, has been prepared under conditions of non high temperature (100-200 DEG C) based on composite aerogel
Integrated electrode material；Heat treatment carries out under vacuum conditions, and vacuum environment can reduce the reduction temperature of metal oxide, from
Structure without destroying sodium alginate aeroge.
Integrated electrode material prepared by the present invention based on composite aerogel, have good mechanical property, flexibility and
Chemical property, and it is at low cost, and preparation process is simple, is easy to large scale preparation.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
Fig. 1 is the integrated electrode material based on composite aerogel prepared under the different vacuum conditions of the embodiment of the present invention 1
XRD test result；
Fig. 2 is the integrated electrode based on composite aerogel prepared under the different ramp rate conditions of the embodiment of the present invention 1
The XRD test result of material；
Fig. 3 is the pictorial diagram of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 3；
Fig. 4 is the SEM figure of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 3；
Fig. 5 is the XRD diagram of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 3；
Fig. 6 is discharge capacity-circulation of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 3
Number test result.
Fig. 7 is the XRD diagram of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 4；
Fig. 8 is discharge capacity-circulation of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 4
Number test result.
Fig. 9 is the XRD diagram of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 5；
Figure 10 is that the discharge capacity-of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 5 is followed
Ring number test result.
Figure 11 is the XRD diagram of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 6；
Figure 12 is that the discharge capacity-of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 6 is followed
Ring number test result.
Figure 13 is the XRD diagram of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 7；
Figure 14 is that the discharge capacity-of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 7 is followed
Ring number test result.
Figure 15 is the XRD diagram of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 8；
Figure 16 is that the discharge capacity-of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 8 is followed
Ring number test result.
Figure 17 is the XRD diagram of the integrated electrode material based on composite aerogel prepared by the embodiment of the present invention 9.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Embodiment 1
By 50mg nano silica fume (partial size 20-60nm), 25mg carbon nanotube (diameter 300nm, length be 5 μm),
Deionized water ultrasound 30min is added in 25mg copper oxide, 10mg polyvinylpyrrolidone；By low viscous (20cps) alginic acid of 62.5mg
Sodium powder end is slowly added in above-mentioned solution that 90mg glucolactone stirring 5min is added after mechanical stirring 6h, stands 48h and waits
Plastic；Hydrogel is put into be put into freeze drier after freezing 2-6 hours in -80 DEG C of refrigerators and is dried；It will be dried
Aerogel material is with the heating rate of 1 DEG C/min from room temperature to 2h is heat-treated at 200 DEG C, and then cooled to room temperature obtains
To the integrated electrode material based on composite aerogel, the pressure of heat treatment is respectively normal pressure (N2Under atmosphere), 1000Pa and
0.4Pa, Fig. 1 are the XRD diagram of material after being heat-treated under different pressures, it can be seen from the figure that N2Still there is spreading out for CuO under atmosphere
Peak is penetrated, the diffraction maximum of CuO disappears under 1000Pa pressure, but still has Cu2The diffraction maximum of O, and without CuO under 0.4Pa pressure
And Cu2The diffraction maximum of O illustrates that under 0.4Pa pressure, copper oxide is reduced to copper simple substance completely, which, which has, leads
Electrically, so that the integrated electrode material based on composite aerogel finally prepared is conductive.
Embodiment 2
By 50mg nano silica fume (partial size 20-60nm), 25mg carbon nanotube (diameter 300nm, length be 5 μm),
Deionized water ultrasound 30min is added in 25mg copper oxide, 10mg polyvinylpyrrolidone；By low viscous (20cps) alginic acid of 62.5mg
Sodium powder end is slowly added in above-mentioned solution that 90mg glucolactone stirring 5min is added after mechanical stirring 6h, stands 48h and waits
Plastic；Hydrogel is put into be put into freeze drier after freezing 2-6 hours in -80 DEG C of refrigerators and is dried；It will be dried
Aerogel material (pressure 0.4Pa) in vacuum environment is heated and is distinguished from room temperature to 200 DEG C with 5 DEG C/min
1h, 2h and 4h are kept the temperature, then cooled to room temperature obtains the integrated electrode material based on composite aerogel.Fig. 2 is gained
The XRD diagram of the material arrived it can be seen from the figure that still having the diffraction maximum of copper oxide when heat preservation 1h, but soaking time is prolonged
It is long to 4h when cuprous oxide diffraction maximum still remain, therefore preferably 2h be the soaking time being heat-treated.
Embodiment 3
By 50mg nano silica fume (partial size 20-60nm), 25mg carbon nanotube (diameter 200nm, length be 5 μm),
Deionized water ultrasound 30min is added in 25mg copper oxide, 10mg polyvinylpyrrolidone；By low viscous (20cps) alginic acid of 62.5mg
Sodium powder end is slowly added in above-mentioned solution that 90mg glucolactone stirring 5min is added after mechanical stirring 6h, stands 48h and waits
Plastic；Hydrogel is put into be put into freeze drier after freezing 2-6 hours in -80 DEG C of refrigerators and is dried；It will be dried
Aerogel material is warming up to 200 DEG C with the heating rate of 1 DEG C/min and keeps the temperature 2h, then naturally cool under 0.4Pa pressure
Room temperature obtains the integrated electrode material based on composite aerogel.As shown in figure 3, the material object of electrode material manufactured in the present embodiment
Figure, material are in black, and can directly obtain film material using the above method, and material has flexibility, can be picked up simultaneously with tweezers
And it is bent, good mechanical properties.
Fig. 4 is the SEM figure of the electrode material of above-mentioned preparation, and the shinny region of silvery white is copper, scale in figure in figure
Length is 8 microns, and the electrode material (Fig. 4 a) of comparison heat treatment front and back, the electrode material surface after heat treatment generates many silver
The particle (Fig. 4 b) of white.
Fig. 5 is that (degree represents angle of diffraction in figure, and intensity represents strong for the XRD diagram of the electrode material of above-mentioned preparation
Degree), the diffraction maximum of copper oxide completely disappears after heat treatment, there is also the copper of a weaker cuprous oxide and spreading out for copper occurs
Peak is penetrated, illustrates that silvery white coloured particles are copper simple substance in SEM.
Using copper/carbon nanometer tube/silicon composite aerogel integrated electrode material and lithium piece as positive and negative anodes, be added every
Film, electrolyte are assembled into button half-cell, test its electric property, and Fig. 6 is discharge capacity-cycle-index figure of electrode material,
Cycle number represents cycle-index in figure, and specific capacity indicates specific discharge capacity.Fig. 6 shows in 100mA/
Under the current density of g, after circulation 20 times, battery still has the capacity of about 800mAh/g.
Embodiment 4
The integrated electrode material based on composite aerogel is prepared according to the method for embodiment 3, the difference is that: seaweed
Sour sodium be in glue (485cps) sodium alginate.
Fig. 7 is the XRD diagram of the electrode material of above-mentioned preparation, it can be seen from the figure that the diffraction of copper oxide and cuprous oxide
Peak completely disappears, and only exists the diffraction maximum of copper, thus it is speculated that is since the sodium alginate molecular weight of viscosity higher is larger, on strand
Secondary hydroxyl is more, thus reproducibility is stronger.
Using copper/carbon nanometer tube/silicon composite aerogel integrated electrode material and lithium piece as positive and negative anodes, be added every
Film, electrolyte are assembled into button half-cell, test its electric property, and Fig. 8 is discharge capacity-cycle-index figure of electrode material.
Fig. 8 shows that under the current density of 100mA/g, after circulation 11 times, battery still has the capacity of about 600mAh/g.
Embodiment 5
The integrated electrode material based on composite aerogel is prepared according to the method for embodiment 3, the difference is that: seaweed
Sour sodium is the sodium alginate of high viscous (1194cps).
Fig. 9 is the XRD diagram of the electrode material of above-mentioned preparation, it can be seen from the figure that the diffraction of copper oxide and cuprous oxide
Peak completely disappears, and only exists the diffraction maximum of copper, thus it is speculated that is since the sodium alginate molecular weight of viscosity higher is larger, on strand
Secondary hydroxyl is more, thus reproducibility is stronger.
Using copper/carbon nanometer tube/silicon composite aerogel integrated electrode material and lithium piece as positive and negative anodes, be added every
Film, electrolyte are assembled into button half-cell, test its electric property, and Figure 10 is discharge capacity-cycle-index figure of electrode material.
Figure 10 shows that under the current density of 100mA/g, after circulation 20 times, battery still has the capacity of about 1800mAh/g.
Embodiment 6
The integrated electrode material based on composite aerogel is prepared according to the method for embodiment 3, the difference is that: carbon is received
The ratio of mitron, nano silica fume and polyvinylpyrrolidone is 2.5:5:1.
Figure 11 is the XRD diagram of the electrode material of above-mentioned preparation, it can be seen from the figure that the diffraction of copper oxide and cuprous oxide
Peak completely disappears, and only exists the diffraction maximum of copper, has no significant effect after illustrating carbon nanotube amount increase to the reduction of copper oxide.
Using copper/carbon nanometer tube/silicon composite aerogel integrated electrode material and lithium piece as positive and negative anodes, be added every
Film, electrolyte are assembled into button half-cell, test its electric property, and Figure 12 is discharge capacity-cycle-index figure of electrode material.
Figure 12 shows that under the current density of 100mA/g, after circulation 8 times, battery still has the capacity of about 2700mAh/g.
Embodiment 7
The integrated electrode material based on composite aerogel is prepared according to the method for embodiment 3, the difference is that: carbon is received
The ratio of mitron, nano silica fume and polyvinylpyrrolidone is 5:5:1.
Figure 13 is the XRD diagram of the electrode material of above-mentioned preparation, it can be seen from the figure that the diffraction of copper oxide and cuprous oxide
Peak completely disappears, and only exists the diffraction maximum of copper, has no significant effect after illustrating carbon nanotube amount increase to the reduction of copper oxide.
Using copper/carbon nanometer tube/silicon composite aerogel integrated electrode material and lithium piece as positive and negative anodes, be added every
Film, electrolyte are assembled into button half-cell, test its electric property, and Figure 14 is discharge capacity-cycle-index figure of electrode material.
Figure 14 shows that under the current density of 100mA/g, after circulation 25 times, battery still has the capacity of about 1300mAh/g.
Embodiment 8
The integrated electrode material based on composite aerogel is prepared according to the method for embodiment 3, the difference is that: oxidation
The ratio of copper, nano silica fume and glucolactone is 5:5:9.
Figure 15 is the XRD diagram of the electrode material of above-mentioned preparation, it can be seen from the figure that the diffraction of copper oxide and cuprous oxide
Peak completely disappears, and only exists the diffraction maximum of copper, and illustrating still can be complete under this heat treatment condition after the amount of copper oxide increases
Portion is reduced to copper.
Using copper/carbon nanometer tube/silicon composite aerogel integrated electrode material and lithium piece as positive and negative anodes, be added every
Film, electrolyte are assembled into button half-cell, test its electric property, and Figure 16 is discharge capacity-cycle-index figure of electrode material.
Figure 16 shows that under the current density of 100mA/g, after circulation 34 times, battery still has the capacity of about 600mAh/g.
Embodiment 9
The integrated electrode material based on composite aerogel is prepared according to the method for embodiment 3, the difference is that: made
Silicon powder partial size is 1 μm.
Figure 17 is the XRD diagram of the electrode material of above-mentioned preparation, it can be seen from the figure that the diffraction maximum of copper oxide disappears completely
It loses, there is also the diffraction maximum of a very weak cuprous oxide and the diffraction maximum of copper occurs, illustrating micron silicon powder also has and receive
The same effect of rice silicon powder.
Embodiment 10
The integrated electrode material based on composite aerogel is prepared according to the method for embodiment 3, the difference is that: at heat
The pressure of reason is 1 × 10-4Pa。
Embodiment 11
The integrated electrode material based on composite aerogel is prepared according to the method for embodiment 3, the difference is that: made
Metal oxide is ferroso-ferric oxide.
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is several improvement and
Modification, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of preparation method of the integrated electrode material based on composite aerogel, which comprises the following steps:
(1) in water by carbon nanotube, silicon powder, metal oxide, polyvinylpyrrolidone, sodium alginate and glucolactone
It mixes, obtains hydrogel after fully reacting, wherein the silicon powder partial size is nanoscale or micron order；
(2) aeroge will be obtained after hydrogel freeze-drying, is then 10 in pressure-6Under the vacuum condition of Pa-4Pa, 100
It is heated at DEG C -200 DEG C, metal oxide is reduced into metal, obtain the integrated electrode material based on composite aerogel.
2. preparation method according to claim 1, it is characterised in that: in step (1), the diameter of the carbon nanotube is
100-300nm, length are 5 μm.
3. preparation method according to claim 1, it is characterised in that: in step (1), the metal oxide is oxidation
It is one or more of in copper, zinc oxide and ferroso-ferric oxide.
4. preparation method according to claim 1, it is characterised in that: in step (1), the carbon nanotube and metal oxygen
The mass ratio of compound is 1:1-1:5.
5. preparation method according to claim 1, it is characterised in that: in step (1), the silicon powder and metal oxide
Mass ratio be 1:1-1:5.
6. preparation method according to claim 1, it is characterised in that: in step (1), the viscosity of the sodium alginate is
20cps-1194cps。
7. preparation method according to claim 1, it is characterised in that: in step (2), heating time 1-4h.
8. the integrated electrode based on composite aerogel prepared by a kind of preparation method of any of claims 1-7
Material, including composite aerogel, the composite aerogel include sodium alginate aeroge and are distributed in the sodium alginate gas
Metallic particles, carbon nanotube and silicon powder in gel.
9. the integrated electrode material according to claim 8 based on composite aerogel, it is characterised in that: electrode material
With a thickness of 50-1000 μm.
10. the integrated electrode material according to any one of claims 8 based on composite aerogel is preparing the application in flexible battery.
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