CN111785942A - Water-based zinc ion battery positive electrode material and preparation method and application thereof - Google Patents
Water-based zinc ion battery positive electrode material and preparation method and application thereof Download PDFInfo
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Abstract
The invention provides a water system zinc ion battery anode material, which comprises the following components: a polyvalent manganese oxide; polypyrrole coated on the surface of the multivalent manganese oxide; the mass of the polypyrrole accounts for 8-15% of the mass of the anode material of the water-based zinc ion battery. Compared with the prior art, the water-based zinc ion battery positive electrode material provided by the invention is based on the characteristics of the polypyrrole/multivalent manganese oxide nanocomposite, and in the composite, the conductive polymer polypyrrole can enhance the conductivity of the multivalent manganese oxide, so that the manganese oxide can better exert the performance, and the rate capability of the battery is improved; the polypyrrole also has certain capacity contribution to the water-based zinc ion battery, so that the overall capacity of the battery is improved; the zinc ion battery can realize good rate performance and excellent battery performance.
Description
Technical Field
The invention relates to the technical field of zinc ion batteries, in particular to a water system zinc ion battery anode material and a preparation method and application thereof.
Background
Energy crisis and climate problems have led to a great interest in electrochemical energy storage systems. Aqueous zinc ion batteries are due to their low price of zinc metal ($ 2/kg), abundant earth resources (almost 6 times as much as lithium source), safety and 820 mAh-g-1Is considered to be a good choice for energy storage devices.
Several negative electrode materials are used as the intercalation host for zinc, such as manganese-based materials, vanadium-based materials, cobalt-based materials, and prussian blue analogs. Among them, manganese-based materials are widely used for Zn due to their advantages of large capacity, low cost, environmental friendliness, etc2+In recent years, other manganese valence states (2 valence and 3 valence) including manganous oxide, zinc manganate or manganese-based composite materials containing both 2 valence manganese and 3 valence manganese have received attention of many researchers-1Relatively high specific capacity (y.fu, q.wei, g.zhang, x.wang, j.zhang, y.hu and s.sun, adv.energy mater, 2018,8, 1801445); yang et al prepared a zinc manganate/manganous oxide composite using surfactant assisted solvothermal method with excellent rate performance and good cycle retention as the positive electrode (s.yang, m.zhang, x.wu, f.zeng, y.li and x.wu, j.electroanal. chem.,2019,832, 69-74.).
However, manganese-based materials have low conductivity and large volume changes during cycling, which affect their rate performance and cycling stability in zinc ion batteries.
Disclosure of Invention
In view of the above, the present invention provides an aqueous zinc ion battery positive electrode material, and a preparation method and an application thereof, and the aqueous zinc ion battery positive electrode material provided by the present invention can realize good rate performance and excellent battery performance for a zinc ion battery based on characteristics of a polypyrrole/polyvalent manganese oxide nanocomposite.
The invention provides a water system zinc ion battery anode material, which comprises the following components:
a polyvalent manganese oxide;
polypyrrole coated on the surface of the multivalent manganese oxide;
the mass of the polypyrrole accounts for 8-15% of the mass of the anode material of the water-based zinc ion battery.
Preferably, the valence of manganese in the multivalent manganese oxide is +3 and/or + 4.
The invention also provides a preparation method of the anode material of the water-based zinc ion battery, which comprises the following steps:
a) and adding an organic solution of pyrrole monomer into the potassium permanganate aqueous solution, carrying out an interface oxidation-reduction reaction, filtering, and drying the precipitate to obtain the water-system zinc ion battery anode material.
Preferably, the temperature of the interfacial redox reaction in the step a) is 0-5 ℃, and the time is 22-26 h.
Preferably, the drying temperature in the step a) is 50-70 ℃ and the drying time is 5-8 h.
The invention also provides a water-based zinc ion battery, which is prepared by assembling the anode, the water-based diaphragm and the cathode in sequence and then dropwise adding a mixed solution of zinc salt and manganese salt into the water-based diaphragm, wherein the anode is carbon cloth loaded with an anode material, and the anode material is the anode material of the water-based zinc ion battery in the technical scheme.
Preferably, the concentration of the zinc salt in the mixed solution of the zinc salt and the manganese salt is 2-3 mol/L, and the concentration of the manganese salt is 0.1-0.2 mol/L;
the dropping amount of the mixed solution of the zinc salt and the manganese salt is 20-30 mu L.
Preferably, the preparation method of the carbon cloth loaded with the cathode material specifically comprises the following steps:
dispersing the electrode slurry in N-methyl pyrrolidone, uniformly mixing, and then coating on a carbon cloth to obtain the carbon cloth loaded with the anode material;
the anode slurry consists of 75-85 wt% of anode material, 5-15 wt% of super-P and 5-15 wt% of polyvinylidene fluoride.
Preferably, the uniform mixing mode is stirring; the stirring temperature is 20-30 ℃, and the stirring time is 4-5 h.
The invention provides a water system zinc ion battery anode material, which comprises the following components: a polyvalent manganese oxide; polypyrrole coated on the surface of the multivalent manganese oxide; the mass of the polypyrrole accounts for 8-15% of the mass of the anode material of the water-based zinc ion battery. Compared with the prior art, the water-based zinc ion battery positive electrode material provided by the invention is based on the characteristics of the polypyrrole/multivalent manganese oxide nanocomposite, and in the composite, the conductive polymer polypyrrole can enhance the conductivity of the multivalent manganese oxide, so that the manganese oxide can better exert the performance, and the rate capability of the battery is improved; the polypyrrole also has certain capacity contribution to the water-based zinc ion battery, so that the overall capacity of the battery is improved; the zinc ion battery can realize good rate performance and excellent battery performance. The experimental result shows that when the current density of the water-based rechargeable zinc ion battery prepared by the water-based zinc ion battery positive electrode material provided by the invention is increased to 20 times of the original value, the capacity can still be maintained to 37% -46%, and the capacity is 106.0 mAh.g. at the 35 th circle of a circulation curve-1After 1000 cycles, the capacity can still reach 113.7mAh g-1。
In addition, the preparation method provided by the invention is synthesized by an interface reaction method, growth templates such as graphene foam, carbon nano tubes or carbon fibers are not needed, the composite material can be formed simultaneously by only one step, and the preparation method is simpler, cheaper, convenient, time-saving and labor-saving and has wide application prospect.
Drawings
FIG. 1 is a flow diagram of a method of preparing polypyrrole/multivalent manganese oxide;
FIG. 2 is a scanning electron microscope image of polypyrrole/polyvalent manganese oxide with a polypyrrole content of 12% prepared in example 2;
FIG. 3 is a TEM image of polypyrrole/polyvalent manganese oxide containing 12% polypyrrole obtained in example 2;
fig. 4 is a rate curve of an aqueous rechargeable zinc ion battery based on a polypyrrole/polyvalent manganese oxide positive electrode material with a polypyrrole content of 8 wt% prepared in example 1;
fig. 5 is a rate curve of an aqueous rechargeable zinc ion battery based on a polypyrrole/polyvalent manganese oxide positive electrode material with a polypyrrole content of 12 wt% prepared in example 2;
fig. 6 is a rate curve of an aqueous rechargeable zinc ion battery based on a polypyrrole/polyvalent manganese oxide positive electrode material with a polypyrrole content of 15 wt% prepared in example 3;
fig. 7 is a cycle curve of an aqueous rechargeable zinc ion battery based on a polypyrrole/polyvalent manganese oxide positive electrode material with a polypyrrole content of 12 wt% prepared in example 2.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention provides a water system zinc ion battery anode material, which comprises the following components:
a polyvalent manganese oxide;
polypyrrole coated on the surface of the multivalent manganese oxide;
the mass of the polypyrrole accounts for 8-15% of the mass of the anode material of the water-based zinc ion battery.
In the invention, the water-based zinc ion battery positive electrode material comprises a multivalent manganese oxide and polypyrrole coated on the surface of the multivalent manganese oxide, and preferably consists of the multivalent manganese oxide and the polypyrrole coated on the surface of the multivalent manganese oxide; namely the polypyrrole/multivalent manganese oxide nano composite material. In the invention, the polypyrrole coated on the surface of the multivalent manganese oxide can protect the manganese oxide, and the manganese oxide is easy to generate large volume change in the battery circulation and can be dissolved in electrolyte, so that the utilization degree of the manganese oxide in the battery is greatly reduced; the polypyrrole reduces the possibility of dissolving the manganese oxide, and can better accommodate the volume change of the manganese oxide in the charging and discharging processes, so that the polypyrrole has great help for improving the cycle performance of the battery.
In the present invention, the valence of manganese in the polyvalent manganese oxide is preferably +3 and/or + 4. Studies have shown that manganese-based materials have low conductivity and large volume changes during cycling, which affect their rate performance and cycling stability in zinc ion batteries; in order to improve their conductivity, researchers have made many attempts, including conductive surface coatings, cationic doping of manganese-based materials, and the addition of conductive additives to electrodes; the method is a common method for preparing the manganese-based cathode by introducing a conductive material into the manganese-based material; conductive materials such as carbon nanotubes, graphene, onion-like carbon, conductive polymers and the like are main choices for improving the conductivity of manganese-based materials. In contrast, the invention, after a great deal of research, selects conductive polymers as conductive materials, and selects polypyrrole which has the advantages of low price, strong conductivity, no toxicity, easy synthesis and the like from a plurality of conductive polymers; in addition, unlike carbon materials, polypyrrole contributes to the capacity of aqueous zinc ion batteries. In the invention, the mass of the polypyrrole accounts for 8-15% of the mass of the anode material of the aqueous zinc-ion battery.
The water system zinc ion battery anode material provided by the invention is based on the characteristics of a polypyrrole/multivalent manganese oxide nanocomposite, in the composite, the conductive polymer polypyrrole can enhance the conductivity of the multivalent manganese oxide, so that the manganese oxide can better exert the performance, and the rate capability of the battery is improved; the polypyrrole also has certain capacity contribution to the water-based zinc ion battery, so that the overall capacity of the battery is improved; the zinc ion battery can realize good rate performance and excellent battery performance.
The invention also provides a preparation method of the anode material of the water-based zinc ion battery, which comprises the following steps:
a) and adding an organic solution of pyrrole monomer into the potassium permanganate aqueous solution, carrying out an interface oxidation-reduction reaction, filtering, and drying the precipitate to obtain the water-system zinc ion battery anode material.
The invention firstly adds the organic solution of pyrrole monomer into the potassium permanganate aqueous solution. The sources of the potassium permanganate and pyrrole monomers are not particularly limited in the invention, and commercial products well known to those skilled in the art can be adopted. In the present invention, the aqueous potassium permanganate solution is obtained by a formulation method well known to those skilled in the art; the organic solution of pyrrole monomer is obtained by a preparation method well known to those skilled in the art; the present invention is not particularly limited in this regard.
In a preferred embodiment of the invention, the potassium permanganate aqueous solution is prepared by dissolving 0.04g to 0.05g of potassium permanganate serving as an oxidant in 40ml to 50ml of deionized water; the organic solution of pyrrole monomer is prepared by dissolving 0.45mL to 0.18mL of pyrrole monomer in 40mL to 50mL of organic solvent. The invention has no special limitation on the type and source of the organic solvent, and the organic solvent can form an interface with water; in a preferred embodiment of the invention, the organic solvent is carbon tetrachloride.
In the present invention, the interfacial redox reaction is a redox reaction occurring at the interface of pyrrole and potassium permanganate. In the invention, the temperature of the interfacial redox reaction is preferably 0-5 ℃; the time of the interfacial redox reaction is 22 to 26 hours, and more preferably 24 hours.
After the reaction is finished, filtering the product and collecting the generated black precipitate; and finally, drying the precipitate to obtain the polypyrrole/multivalent manganese oxide nanocomposite, namely the water-based zinc ion battery positive electrode material. In the present invention, the drying temperature is preferably 50 ℃ to 70 ℃, more preferably 60 ℃; the drying time is preferably 5 to 8 hours, more preferably 6 hours.
In the invention, the mass of the polypyrrole accounts for 8-15% of the anode material of the water-based zinc ion battery, and can be regulated and controlled by controlling the content of pyrrole monomers in an organic solution of the pyrrole monomers.
Referring to fig. 1, fig. 1 is a flow diagram of a method for preparing polypyrrole/multivalent manganese oxide; compared with the traditional method for preparing the manganese-based material/polypyrrole composite material (the method takes graphene foam, carbon nano tubes or carbon fibers and the like as templates, and has complex and time-consuming process), the method has the advantages that: the mixture of polypyrrole/multivalent manganese oxide is directly generated by using an interface reaction method which is a simple mode, the process is simple, and the time is saved; meanwhile, in the mixture of polypyrrole/polyvalent manganese oxide, polypyrrole provides an effective conductive network, so that the conductivity of the composite material and the utilization rate of the manganese oxide are improved, and the rate capability of the battery is improved; and both polypyrrole and manganese oxide contribute to the capacity of the aqueous zinc ion battery, and contribute to the improvement of the capacity of the battery. In conclusion, the preparation method provided by the invention can form the composite material simultaneously by only one step, is simpler, cheaper, convenient, time-saving and labor-saving, has wide application prospect and is significant.
The invention also provides a water-based zinc ion battery, which is prepared by assembling the anode, the water-based diaphragm and the cathode in sequence and then dropwise adding a mixed solution of zinc salt and manganese salt into the water-based diaphragm, wherein the anode is carbon cloth loaded with an anode material, and the anode material is the anode material of the water-based zinc ion battery in the technical scheme.
In the invention, the positive electrode is carbon cloth loaded with a positive electrode material, and the positive electrode material is the positive electrode material of the water-based zinc ion battery in the technical scheme. In the invention, the preparation method of the carbon cloth loaded with the cathode material preferably comprises the following steps:
and dispersing the electrode slurry in N-methyl pyrrolidone, uniformly mixing, and coating on a carbon cloth to obtain the carbon cloth loaded with the anode material. In the present invention, the positive electrode slurry is preferably composed of 75 to 85 wt% of a positive electrode material, 5 to 15 wt% of super-P, and 5 to 15 wt% of polyvinylidene fluoride, and more preferably composed of 80 wt% of a positive electrode material, 10 wt% of super-P, and 10 wt% of polyvinylidene fluoride. The sources of the N-methylpyrrolidone, super-P and polyvinylidene fluoride are not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used.
In the present invention, the manner of uniform mixing is preferably stirring; the stirring temperature is preferably 20-30 ℃, and more preferably 25 ℃; the stirring time is preferably 4 to 5 hours, and more preferably 4 hours.
The method of coating is not particularly limited in the present invention, and a doctor blade method well known to those skilled in the art may be used.
In the present invention, the negative electrode is preferably a zinc foil or an electrogalvanized carbon cloth, and the present invention is not particularly limited thereto.
In the invention, the concentration of the zinc salt in the mixed solution of the zinc salt and the manganese salt is preferably 2 mol/L-3 mol/L, and more preferably 2 mol/L; the concentration of the manganese salt in the mixed solution of the zinc salt and the manganese salt is preferably 0.1mol/L to 0.2mol/L, and more preferably 0.1 mol/L. In the present invention, the amount of the mixed solution of the zinc salt and the manganese salt to be added dropwise is preferably 20. mu.L to 30. mu.L, and more preferably 20. mu.L.
In the present invention, the zinc salt is preferably zinc sulfate; the manganese salt is preferably manganese sulfate; the source of the zinc salt and the manganese salt is not particularly limited in the present invention, and commercially available products well known to those skilled in the art may be used.
The invention provides a water system zinc ion battery anode material, which comprises the following components: a polyvalent manganese oxide; polypyrrole coated on the surface of the multivalent manganese oxide; the mass of the polypyrrole accounts for 8-15% of the mass of the anode material of the water-based zinc ion battery. Compared with the prior art, the water-based zinc ion battery positive electrode material provided by the invention is based on the characteristics of the polypyrrole/multivalent manganese oxide nanocomposite, and in the composite, the conductive polymer polypyrrole can enhance the conductivity of the multivalent manganese oxide, so that the manganese oxide can better exert the performance, and the rate capability of the battery is improved; the polypyrrole also has certain capacity contribution to the water-based zinc ion battery, so that the overall capacity of the battery is improved; for zinc ion batteriesGood rate performance and excellent battery performance can be achieved. The experimental result shows that when the current density of the water-based rechargeable zinc ion battery prepared by the water-based zinc ion battery positive electrode material provided by the invention is increased to 20 times of the original value, the capacity can still be maintained to 37% -46%, and the capacity is 106.0 mAh.g. at the 35 th circle of a circulation curve-1After 1000 cycles, the capacity can still reach 113.7mAh g-1。
In addition, the preparation method provided by the invention is synthesized by an interface reaction method, growth templates such as graphene foam, carbon nano tubes or carbon fibers are not needed, the composite material can be formed simultaneously by only one step, and the preparation method is simpler, cheaper, convenient, time-saving and labor-saving and has wide application prospect.
To further illustrate the present invention, the following examples are provided for illustration. The raw materials used in the following examples of the present invention are all commercially available products.
Example 1
(1) Preparation of polypyrrole/polyvalent manganese oxide based electrodes: dissolving 0.045ml of pyrrole monomer in 45ml of carbon tetrachloride, and dissolving 0.045g of potassium permanganate serving as an oxidant in 45ml of deionized water; then, adding the aqueous solution into the organic solution at 0-5 ℃ for 24h, and carrying out redox reaction at the interface of the pyrrole and the potassium permanganate; after the reaction was completed, the product was filtered and the resulting black precipitate was collected; finally, drying the product at 60 ℃ for 6h to obtain the polypyrrole/multivalent manganese oxide nanocomposite; the content of polypyrrole in the polypyrrole/polyvalent manganese oxide nanocomposite is 8 wt%.
The electrode slurry consists of 80 wt% of polypyrrole/polyvalent manganese oxide nanocomposite, 10 wt% of super-P and 10 wt% of polyvinylidene fluoride, is dispersed in N-methyl pyrrolidone, is stirred for 4 hours at normal temperature, and is coated on carbon cloth by adopting a blade coating method to obtain the polypyrrole/polyvalent manganese oxide-based electrode.
(2) Preparing a sandwich-shaped water-based rechargeable zinc ion battery: and (2) assembling the polypyrrole/polyvalent manganese oxide-based electrode obtained in the step (1) as a positive electrode and a zinc foil as a negative electrode in the order of the positive electrode, an aqueous diaphragm and the negative electrode, and dropwise adding 20 mu L of a mixed solution of 2mol/L zinc sulfate and 0.1mol/L manganese sulfate into the aqueous diaphragm to obtain the aqueous rechargeable zinc ion battery.
Through detection, when the current density of the aqueous rechargeable zinc ion battery prepared in the embodiment 1 of the invention is increased to 20 times of the original current density, the capacity can still keep 37% of the original capacity, which is shown in fig. 4; and the capacity at the 35 th cycle of the cycle curve was 193.3mAh g-1。
Example 2
(1) Preparation of polypyrrole/polyvalent manganese oxide based electrodes: dissolving 0.09ml of pyrrole monomer in 45ml of carbon tetrachloride, and dissolving 0.045g of potassium permanganate serving as an oxidant in 45ml of deionized water; then, adding the aqueous solution into the organic solution at 0-5 ℃ for 24h, and carrying out redox reaction at the interface of the pyrrole and the potassium permanganate; after the reaction was completed, the product was filtered and the resulting black precipitate was collected; finally, drying the product at 60 ℃ for 6h to obtain the polypyrrole/multivalent manganese oxide nanocomposite; the content of polypyrrole in the polypyrrole/polyvalent manganese oxide nanocomposite is 12 wt%, and a scanning electron microscope image of the polypyrrole/polyvalent manganese oxide nanocomposite is shown in fig. 2, and a transmission electron microscope image of the polypyrrole/polyvalent manganese oxide nanocomposite is shown in fig. 3.
The electrode slurry consists of 80 wt% of polypyrrole/polyvalent manganese oxide nanocomposite, 10 wt% of super-P and 10 wt% of polyvinylidene fluoride, is dispersed in N-methyl pyrrolidone, is stirred for 4 hours at normal temperature, and is coated on carbon cloth by adopting a blade coating method to obtain the polypyrrole/polyvalent manganese oxide-based electrode.
(2) Preparing a sandwich-shaped water-based rechargeable zinc ion battery: and (2) assembling the polypyrrole/polyvalent manganese oxide-based electrode obtained in the step (1) as a positive electrode and a zinc foil as a negative electrode in the order of the positive electrode, an aqueous diaphragm and the negative electrode, and dropwise adding 20 mu L of a mixed solution of 2mol/L zinc sulfate and 0.1mol/L manganese sulfate into the aqueous diaphragm to obtain the aqueous rechargeable zinc ion battery.
Through detection, when the current density of the water system rechargeable zinc ion battery prepared in the embodiment 2 of the invention is increased to 20 times of the original current density, the capacity can still keep 42% of the original capacity, as shown in fig. 5; and the cyclic curve at the 35 th turn has a capacity of106.0mAh·g-1After 500 cycles, the capacity can still reach 113.7mAh g-1See fig. 7.
Example 3
(1) Preparation of polypyrrole/polyvalent manganese oxide based electrodes: dissolving 0.18ml of pyrrole monomer in 45ml of carbon tetrachloride, and dissolving 0.045g of potassium permanganate serving as an oxidant in 45ml of deionized water; then, adding the aqueous solution into the organic solution at 0-5 ℃ for 24h, and carrying out redox reaction at the interface of the pyrrole and the potassium permanganate; after the reaction was completed, the product was filtered and the resulting black precipitate was collected; finally, drying the product at 60 ℃ for 6h to obtain the polypyrrole/multivalent manganese oxide nanocomposite; the content of polypyrrole in the polypyrrole/polyvalent manganese oxide nanocomposite is 15 wt%.
The electrode slurry consists of 80 wt% of polypyrrole/polyvalent manganese oxide nanocomposite, 10 wt% of super-P and 10 wt% of polyvinylidene fluoride, is dispersed in N-methyl pyrrolidone, is stirred for 4 hours at normal temperature, and is coated on carbon cloth by adopting a blade coating method to obtain the polypyrrole/polyvalent manganese oxide-based electrode.
(2) Preparing a sandwich-shaped water-based rechargeable zinc ion battery: and (2) assembling the polypyrrole/polyvalent manganese oxide-based electrode obtained in the step (1) as a positive electrode and a zinc foil as a negative electrode in the order of the positive electrode, an aqueous diaphragm and the negative electrode, and dropwise adding 20 mu L of a mixed solution of 2mol/L zinc sulfate and 0.1mol/L manganese sulfate into the aqueous diaphragm to obtain the aqueous rechargeable zinc ion battery.
Through detection, when the current density of the water system rechargeable zinc ion battery prepared in the embodiment 3 of the invention is increased to 20 times of the original current density, the capacity can still keep 46% of the original capacity, which is shown in fig. 6; and the capacity at the 35 th cycle of the cycle curve was 176.8mAh g-1。
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An aqueous zinc-ion battery positive electrode material comprising:
a polyvalent manganese oxide;
polypyrrole coated on the surface of the multivalent manganese oxide;
the mass of the polypyrrole accounts for 8-15% of the mass of the anode material of the water-based zinc ion battery.
2. The aqueous zinc-ion battery positive electrode material according to claim 1, wherein a valence of manganese in the polyvalent manganese oxide is +3 and/or + 4.
3. A method for producing the aqueous zinc-ion battery positive electrode material according to any one of claims 1 to 2, comprising the steps of:
a) and adding an organic solution of pyrrole monomer into the potassium permanganate aqueous solution, carrying out an interface oxidation-reduction reaction, filtering, and drying the precipitate to obtain the water-system zinc ion battery anode material.
4. The preparation method according to claim 3, wherein the temperature of the interfacial redox reaction in the step a) is 0-5 ℃ and the time is 22-26 h.
5. The method according to claim 3, wherein the drying in step a) is carried out at a temperature of 50 ℃ to 70 ℃ for a time of 5h to 8 h.
6. An aqueous zinc-ion battery prepared by assembling a positive electrode, an aqueous separator and a negative electrode in this order and then dropping a mixed solution of a zinc salt and a manganese salt into the aqueous separator, wherein the positive electrode is a carbon cloth supporting a positive electrode material, and the positive electrode material is the aqueous zinc-ion battery positive electrode material according to any one of claims 1 to 2.
7. The aqueous zinc-ion battery according to claim 6, wherein the concentration of the zinc salt in the mixed solution of the zinc salt and the manganese salt is 2 to 3mol/L, and the concentration of the manganese salt is 0.1 to 0.2 mol/L;
the dropping amount of the mixed solution of the zinc salt and the manganese salt is 20-30 mu L.
8. The aqueous zinc-ion battery according to claim 6, wherein the method for preparing the positive electrode material-supporting carbon cloth specifically comprises:
dispersing the electrode slurry in N-methyl pyrrolidone, uniformly mixing, and then coating on a carbon cloth to obtain the carbon cloth loaded with the anode material;
the anode slurry consists of 75-85 wt% of anode material, 5-15 wt% of super-P and 5-15 wt% of polyvinylidene fluoride.
9. The aqueous zinc-ion battery according to claim 8, wherein the means for uniformly mixing is stirring; the stirring temperature is 20-30 ℃, and the stirring time is 4-5 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010692648.5A CN111785942A (en) | 2020-07-17 | 2020-07-17 | Water-based zinc ion battery positive electrode material and preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113054152A (en) * | 2021-02-05 | 2021-06-29 | 中国地质大学（武汉） | 3D printing zinc ion battery positive electrode and preparation method thereof |
| CN113346063A (en) * | 2021-06-01 | 2021-09-03 | 上海电力大学 | Water-based zinc ion battery positive electrode material and preparation method thereof |
| CN113422048A (en) * | 2021-06-23 | 2021-09-21 | 上海电力大学 | Preparation method and application of novel water-based zinc ion battery positive electrode material |
| CN114566628A (en) * | 2022-03-04 | 2022-05-31 | 合肥工业大学 | Preparation method of anode material of phytic acid doped polypyrrole @ vanadate water-based zinc ion battery |
| CN114744197A (en) * | 2022-03-30 | 2022-07-12 | 五邑大学 | Vanadium oxide-polypyrrole composite material and preparation method and application thereof |
| CN115724469A (en) * | 2022-11-24 | 2023-03-03 | 湖北师范大学 | Carbon-coated manganous manganic oxide submicron spherical shell material and preparation method and application thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113054152A (en) * | 2021-02-05 | 2021-06-29 | 中国地质大学（武汉） | 3D printing zinc ion battery positive electrode and preparation method thereof |
| CN113346063A (en) * | 2021-06-01 | 2021-09-03 | 上海电力大学 | Water-based zinc ion battery positive electrode material and preparation method thereof |
| CN113422048A (en) * | 2021-06-23 | 2021-09-21 | 上海电力大学 | Preparation method and application of novel water-based zinc ion battery positive electrode material |
| CN113422048B (en) * | 2021-06-23 | 2022-04-01 | 上海电力大学 | Preparation method and application of anode material of water-based zinc ion battery |
| CN114566628A (en) * | 2022-03-04 | 2022-05-31 | 合肥工业大学 | Preparation method of anode material of phytic acid doped polypyrrole @ vanadate water-based zinc ion battery |
| CN114566628B (en) * | 2022-03-04 | 2023-02-24 | 合肥工业大学 | Preparation method of phytic acid doped polypyrrole @ vanadate aqueous zinc ion battery positive electrode material |
| CN114744197A (en) * | 2022-03-30 | 2022-07-12 | 五邑大学 | Vanadium oxide-polypyrrole composite material and preparation method and application thereof |
| CN115724469A (en) * | 2022-11-24 | 2023-03-03 | 湖北师范大学 | Carbon-coated manganous manganic oxide submicron spherical shell material and preparation method and application thereof |
| CN115724469B (en) * | 2022-11-24 | 2024-02-23 | 湖北师范大学 | Carbon-coated manganous-manganic oxide submicron spherical shell material and preparation method and application thereof |
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