CN113054152A - 3D printing zinc ion battery positive electrode and preparation method thereof - Google Patents
3D printing zinc ion battery positive electrode and preparation method thereof Download PDFInfo
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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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0411—Methods of deposition of the material by extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/314—Preparation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/10—Pre-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
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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
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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
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
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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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a preparation method of a 3D printing zinc ion battery anode, which comprises the following steps: uniformly mixing a nano active material, a conductive agent and a binder, grinding, adding a dispersing agent, continuously grinding, shearing and dispersing by a high-speed mixer to prepare electrode slurry, placing the electrode slurry in a needle cylinder for printing, controlling an extrusion path by a digital program by utilizing an extrusion type 3D printing technology to prepare a 3D structure electrode, and carrying out freeze drying and post-treatment on the 3D structure electrode to obtain the self-supporting 3D printing zinc ion battery anode. The obtained positive electrode material is self-supporting and good in flexibility, does not need a current collector, realizes an electrode material with high active substance loading capacity and high capacity, and has potential application value in the field of zinc ion batteries.
Description
Technical Field
The invention relates to the technical field of battery material preparation. More particularly, the invention relates to a 3D printing zinc ion battery anode and a preparation method thereof.
Background
There is an increasing demand for portable wearable electronic devices, and new energy storage device systems are urgently needed to be developed. The zinc ion battery has the advantages of high capacity, low cost, environmental friendliness, high safety and the like, and is widely researched and applied to the technical field of energy storage. However, the electrode materials prepared by the conventional electrode preparation methods such as coating methods still have some problems: the loading of active materials in the electrode material is too low, which severely limits the practical application of the zinc ion battery; the current collector used in the preparation of the electrode material, such as a titanium foil or a stainless steel foil, substantially increases the cost in the battery manufacturing process. Therefore, the preparation of high capacity, high loading, current collector-less positive electrodes is a necessary trend for commercialization of zinc ion batteries.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention also aims to provide a preparation method of the 3D printing zinc ion battery anode, which adopts an extrusion type 3D printing technology, and the obtained anode material has good self-supporting and flexibility, does not need a current collector, realizes an electrode material with high loading capacity and high capacity of active substances, and has potential application in the field of zinc ion batteries.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a method for preparing a positive electrode for a 3D printed zinc-ion battery, comprising: uniformly mixing a nano active material, a conductive agent and a binder, grinding, adding a dispersing agent, continuously grinding, shearing and dispersing by a high-speed mixer to prepare electrode slurry, placing the electrode slurry in a needle cylinder for printing, controlling an extrusion path by a digital program by utilizing an extrusion type 3D printing technology to prepare a 3D structure electrode, and carrying out freeze drying and post-treatment on the 3D structure electrode to obtain the self-supporting 3D printing zinc ion battery anode.
Preferably, the freeze-drying post-treatment comprises: soaking the 3D structure electrode in water for 8-12 h, taking out, sucking water, and freeze-drying to obtain a 3D printing zinc ion battery anode;
the temperature of the freeze drying is-70 to-20 ℃, and the time is 8 hours.
Preferably, the mass of the nanometer active material accounts for 70% of the total mass of the positive electrode of the zinc ion battery.
Preferably, the mass of the positive electrode of the zinc ion battery is controlled to be 4-25 mg cm-2。
Preferably, the nano-active material is Fe5V15O39(OH)9·9H2One or more of an O (FeVO) composite material, a composite material of FeVO and a carbon material, a composite material of FeVO and a conductive polymer, and a composite material of FeVO and a metal oxide.
Preferably, the carbon material comprises one or more of porous carbon, mesoporous carbon, carbon nanotubes or graphene;
the conductive polymer comprises one or more of polypyrrole, polyaniline, polyvinylpyrrolidone, polyethylene glycol and polythiophene; the metal oxide comprises one or more of manganese dioxide, manganese oxide and vanadium pentoxide.
Preferably, the conductive agent includes one or more of acetylene black, carbon nanotubes, and graphene.
Preferably, the binder comprises one or more of polyvinylidene fluoride, sodium alginate and sodium carboxymethyl cellulose.
Preferably, the dispersant is one of N-methylpyrrolidone and pure water.
A3D printing zinc ion battery anode is prepared by a preparation method of the 3D printing zinc ion battery anode.
The invention at least comprises the following beneficial effects:
by adopting the extrusion type 3D printing technology, the obtained anode material is self-supporting and good in flexibility, does not need a current collector, realizes an electrode material with high loading capacity and high capacity of active substances, and has potential application in the field of zinc ion batteries.
The battery electrode prepared by the 3D printing method constructs a hierarchical porous structure, provides a conductive network and a channel for the transmission of electrons and ions, and can promote the diffusion of the ions.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a physical diagram of a grid-shaped 1-4 layer zinc-ion battery anode prepared by 3D printing according to an embodiment of the invention;
fig. 2 is an SEM image of a grid-like 2-layer zinc-ion battery positive electrode prepared by 3D printing according to an embodiment of the present invention;
FIG. 3 shows that the current density of the latticed 2-layer nano FeVO electrode prepared by 3D printing in the embodiment of the invention is 0.1A g-1A schematic diagram of a lower charge-discharge curve;
FIG. 4 is a graph of rate performance of a latticed 2-layer nano FeVO electrode prepared by 3D printing in different current densities according to an embodiment of the invention;
fig. 5 is a composite physical diagram of circular and square positive electrodes of FeVO cells prepared by 3D printing according to an embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified.
Example 1
Respectively weighing 700mg of FeVO material, 100mg of graphene, 100mg of acetylene black and 100mg of polyvinylidene fluoride, mixing, adding into a mortar, grinding for 30min, adding 1.5mL of N-methylpyrrolidone, continuously grinding for 30min to obtain a preceding stage sample of the electrode slurry, further adjusting the dosage of the N-methylpyrrolidone, preparing the electrode slurry by using a high-speed rotating mixer, and filling into a 3D printing needle cylinder for standby. And (4) formulating a printing program according to the designed structure, and inputting the program into the 3D printer. An air compressor is started to increase the pressure to 0.7MPa, the needle cylinder to be used is fixed to the corresponding position of the 3D printer, the printing working speed is set to be 600mm/s, the substrate temperature is 25 ℃, the printing structure is designed to be 3D gridding, and the number of printing layers is 1 layer, 2 layers, 3 layers and 4 layers, as shown in figure 1. And (4) placing the cleaned glass sheet on a printing table, and starting 3D printing. After the electrode slurry is printed, soaking the electrode in deionized water for 12h, taking out the electrode, sucking surface moisture, placing the electrode in a refrigerator for pre-freezing for 2h, immediately transferring the electrode into a freeze dryer, and freeze-drying for 8h at the temperature of minus 50 to minus 20 ℃, wherein the obtained positive electrode can be directly used for assembling a zinc ion battery. The electrochemical performance of the test is shown in fig. 2 and 3.
Example 2
Respectively weighing 700mg of FeVO and graphene composite material powder, 100mg of graphene, 100mg of acetylene black and 100mg of polyvinylidene fluoride, mixing, adding into a mortar, grinding for 30min, adding 1.5mL of N-methylpyrrolidone, continuously grinding for 30min to obtain a preceding stage sample of the electrode slurry, further adjusting the using amount of the N-methylpyrrolidone, and filling the electrode slurry prepared by using a high-speed rotating mixer into a 3D printing needle cylinder for later use. And (4) formulating a printing program according to the designed structure, and inputting the program into the 3D printer. And (3) starting an air compressor to increase the pressure to 0.7MPa, fixing the needle cylinder to be used to the corresponding position of the 3D printer, setting the printing working speed to be 600mm/s, setting the substrate temperature to be 25 ℃, and designing the printing structure to be in a 3D grid shape. And (4) placing the cleaned glass sheet on a printing table, and starting 3D printing. After the electrode slurry is printed, soaking the electrode in deionized water for 10h, taking out the electrode, absorbing surface moisture, placing the electrode in a refrigerator for pre-freezing for 2h, immediately transferring the electrode into a freeze dryer, and freeze-drying for 8h at the temperature of-70 to-30 ℃ to obtain the anode which can be directly used for assembling the zinc ion battery.
Example 3
Respectively weighing 700mg of FeVO and graphene composite material, 100mg of carbon nano tube, 100mg of acetylene black and 100mg of sodium alginate, mixing, adding into a mortar, grinding for 30min, adding 1.5mL of deionized water, continuously grinding for 30min to obtain a preceding stage sample of electrode slurry, further adjusting the dosage of the deionized water, preparing the electrode slurry by using a high-speed rotating mixer, and filling into a 3D printing needle cylinder for later use. And (4) formulating a printing program according to the designed structure, and inputting the program into the 3D printer. And (3) starting an air compressor to increase the pressure to 0.7MPa, fixing the needle cylinder to be used to the corresponding position of the 3D printer, setting the printing working speed to be 600mm/s, setting the substrate temperature to be 25 ℃, and designing the printing structure to be in a 3D grid shape. And (4) placing the cleaned glass sheet on a printing table, and starting 3D printing. After the electrode slurry is printed, soaking the electrode in deionized water for 11h, taking out the electrode, sucking surface moisture, placing the electrode in a refrigerator for pre-freezing for 2h, immediately transferring the electrode into a freeze dryer, and freeze-drying for 8h at the temperature of minus 60 to minus 20 ℃, wherein the obtained positive electrode can be directly used for assembling a zinc ion battery.
Example 4
Respectively weighing 600mg of FeVO material, 200mg of graphene, 100mg of acetylene black and 100mg of polyvinylidene fluoride, mixing, adding into a mortar, grinding for 30min, adding 1.5mL of N-methylpyrrolidone, continuously grinding for 30min to obtain a preceding stage sample of electrode slurry, further adjusting the dosage of the N-methylpyrrolidone, preparing the electrode slurry by using a high-speed rotating mixer, and filling into a 3D printing needle cylinder for later use. And (4) formulating a printing program according to the designed structure, and inputting the program into the 3D printer. And (3) starting an air compressor to increase the pressure to 0.7MPa, fixing the needle cylinder to be used to the corresponding position of the 3D printer, setting the printing working speed to be 600mm/s, setting the substrate temperature to be 25 ℃, and designing the printing structure to be in a 3D grid shape. And (4) placing the cleaned glass sheet on a printing table, and starting 3D printing. After the electrode slurry is printed, soaking the electrode in deionized water for 12h, taking out the electrode, sucking surface moisture, placing the electrode in a refrigerator for pre-freezing for 2h, immediately transferring the electrode into a freeze dryer, and freeze-drying for 8h at the temperature of minus 50 to minus 20 ℃, wherein the obtained positive electrode can be directly used for assembling a zinc ion battery.
Example 5
Respectively weighing 600mg of FeVO material, 300mg of graphene and 100mg of polyvinylidene fluoride, mixing, adding into a mortar, grinding for 30min, adding 1.5mL of N-methylpyrrolidone, continuously grinding for 30min to obtain a preceding stage sample of the electrode slurry, further adjusting the dosage of the N-methylpyrrolidone, preparing the electrode slurry by using a high-speed rotating mixer, and filling into a 3D printing needle cylinder for later use. And (4) formulating a printing program according to the designed structure, and inputting the program into the 3D printer. And (3) starting an air compressor to increase the pressure to 0.7MPa, fixing the needle cylinder to be used to the corresponding position of the 3D printer, setting the printing working speed to be 600mm/s, setting the substrate temperature to be 25 ℃, and designing the printing structure to be in a 3D grid shape. And (4) placing the cleaned glass sheet on a printing table, and starting 3D printing. After the electrode slurry is printed, soaking the electrode in deionized water for 12h, taking out the electrode, sucking surface moisture, placing the electrode in a refrigerator for pre-freezing for 2h, immediately transferring the electrode into a freeze dryer, and freeze-drying for 8h at the temperature of minus 60 to minus 30 ℃, wherein the obtained positive electrode can be directly used for assembling a zinc ion battery.
Example 6
Respectively weighing 600mg of FeVO material, 300mg of acetylene black and 100mg of polyvinylidene fluoride, mixing, adding into a mortar, grinding for 30min, adding 1.5mL of N-methylpyrrolidone, continuously grinding for 30min to obtain a preceding stage sample of the electrode slurry, further adjusting the dosage of the N-methylpyrrolidone, preparing the electrode slurry by using a high-speed rotating mixer, and filling into a 3D printing needle cylinder for later use. And (4) formulating a printing program according to the designed structure, and inputting the program into the 3D printer. And (3) starting an air compressor to increase the pressure to 0.7MPa, fixing the needle cylinder to be used to the corresponding position of the 3D printer, setting the printing working speed to be 600mm/s, setting the substrate temperature to be 25 ℃, and designing the printing structure to be in a 3D grid shape. And (4) placing the cleaned glass sheet on a printing table, and starting 3D printing. After the electrode slurry is printed, soaking the electrode in deionized water for 12h, taking out the electrode, sucking surface moisture, placing the electrode in a refrigerator for pre-freezing for 2h, immediately transferring the electrode into a freeze dryer, and freeze-drying for 8h at the temperature of minus 50 to minus 20 ℃, wherein the obtained positive electrode can be directly used for assembling a zinc ion battery.
Example 7
Respectively weighing 700mg of FeVO material, 200mg of carbon nano tube and 100mg of sodium carboxymethylcellulose, mixing, adding into a mortar, grinding for 30min, adding 1.5mL of deionized water, continuously grinding for 30min to obtain a preceding stage sample of the electrode slurry, further adjusting the dosage of the deionized water, preparing the electrode slurry by using a high-speed rotating mixer, and filling into a 3D printing needle cylinder for later use. And (4) formulating a printing program according to the designed structure, and inputting the program into the 3D printer. And (3) opening an air compressor to increase the pressure to 0.7MPa, fixing the needle cylinder to be used to the corresponding position of the 3D printer, setting the printing working speed to be 600mm/s, setting the substrate temperature to be 25 ℃, and designing the printing structure to be square and circular. And (4) placing the cleaned glass sheet on a printing table, and starting 3D printing. And after the electrode slurry is printed, soaking the electrode in deionized water for 8h, taking out the electrode, absorbing surface moisture, placing the electrode in a refrigerator for pre-freezing for 2h, immediately transferring the electrode into a freeze dryer, and freeze-drying at the temperature of-60 to-30 ℃ for 8h to obtain the anode as shown in figure 4, wherein the anode can be directly used for assembling a zinc ion battery.
The extrusion type 3D printing technology has the advantages of pattern design, low cost, simplicity in operation and the like, and is widely applied to the fields of energy storage, electronic devices, biological medicine and the like. Therefore, by using the extrusion type 3D printing technology, on one hand, the patterned electrode can be prepared through 3D printing, and the method has wide application prospect; on the other hand, a hierarchical porous structure can be constructed through 3D printing, more active sites are provided, and effective transmission of electrons/ions can be achieved. Therefore, the 3D printing technology can prepare the anode with high capacity, high load capacity and no current collector, and opens up a new idea in the energy field.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (10)
1. A preparation method of a 3D printing zinc ion battery positive electrode is characterized by comprising the following steps: uniformly mixing a nano active material, a conductive agent and a binder, grinding, adding a dispersing agent, continuously grinding, shearing and dispersing by a high-speed mixer to prepare electrode slurry, placing the electrode slurry in a needle cylinder for printing, controlling an extrusion path by a digital program by utilizing an extrusion type 3D printing technology to prepare a 3D structure electrode, and carrying out freeze drying and post-treatment on the 3D structure electrode to obtain the self-supporting 3D printing zinc ion battery anode.
2. The method of preparing a 3D printed zinc-ion battery positive electrode of claim 1, wherein the freeze-drying post-treatment comprises: soaking the 3D structure electrode in water for 8-12 h, taking out, sucking water, and freeze-drying to obtain a 3D printing zinc ion battery anode;
the temperature of the freeze drying is-70 to-20 ℃, and the time is 8 hours.
3. The method for preparing a 3D printed zinc-ion battery positive electrode according to claim 1, wherein the mass of the nano-active material accounts for 70% of the total mass of the zinc-ion battery positive electrode.
4. The preparation method of the 3D printing zinc ion battery positive electrode according to claim 1, wherein the quality of the zinc ion battery positive electrode is controlled to be 4-25 mg cm-2。
5. The method of preparing a 3D printed zinc-ion battery positive electrode of claim 1, wherein the nano-active material is Fe5V15O39(OH)9·9H2O (FeVO) complexOne or more of composite material, composite material of FeVO and carbon material, composite material of FeVO and conducting polymer, and composite material of FeVO and metal oxide.
6. The method of preparing a 3D printed zinc-ion battery positive electrode of claim 5, wherein the carbon material comprises one or more of porous carbon, mesoporous carbon, carbon nanotubes, or graphene;
the conductive polymer comprises one or more of polypyrrole, polyaniline, polyvinylpyrrolidone, polyethylene glycol and polythiophene;
the metal oxide comprises one or more of manganese dioxide, manganese oxide and vanadium pentoxide.
7. The method for preparing a 3D printed zinc-ion battery positive electrode according to claim 1, wherein the conductive agent comprises one or more of acetylene black, carbon nanotubes and graphene.
8. The method for preparing the 3D printing zinc-ion battery positive electrode according to claim 1, wherein the binder comprises one or more of polyvinylidene fluoride, sodium alginate and sodium carboxymethylcellulose.
9. The method for preparing a 3D printed zinc-ion battery positive electrode according to claim 1, wherein the dispersant is one of N-methyl pyrrolidone and pure water.
10. A3D printing zinc ion battery positive electrode is characterized by being prepared by the preparation method of the 3D printing zinc ion battery positive electrode according to any one of claims 1-9.
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| CN114094036A (en) * | 2021-09-26 | 2022-02-25 | 上海工程技术大学 | Structure of battery electrode and preparation method thereof |
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| CN114843454A (en) * | 2022-04-14 | 2022-08-02 | 武汉大学 | 3D printed high-specific-energy lithium ion battery positive and negative electrode material and preparation method and application thereof |
| CN115000395A (en) * | 2022-05-11 | 2022-09-02 | 中南大学 | K-doped alpha-manganese dioxide nanorod, direct-writing forming ink, zinc ion battery anode and preparation methods thereof |
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| CN115000395A (en) * | 2022-05-11 | 2022-09-02 | 中南大学 | K-doped alpha-manganese dioxide nanorod, direct-writing forming ink, zinc ion battery anode and preparation methods thereof |
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