Construction method of fibrous zinc ion battery, flexible battery fabric and application

Abstract

The invention relates to the technical field of flexible batteries, in particular to a construction method of a fibrous zinc ion battery, a flexible battery fabric and application, and the construction method comprises the following steps: uniformly coating a gel electrolyte on the surface of a zinc wire, and performing drying treatment to form a fibrous negative electrode; coating a slurry containing a positive electrode active material on a current collector, drying, uniformly coating a gel electrolyte on the surface of the current collector, and drying again to prepare a fibrous positive electrode; uniformly winding a diaphragm on the periphery of the positive electrode, and then spirally winding the negative electrode on the positive electrode to form a cell structure; and soaking the battery cell in the electrolyte, and immediately carrying out battery packaging treatment after soaking is completed, so that the construction of the fibrous zinc ion battery is completed. The fibrous zinc ion battery prepared by using the gel electrolyte is simple in construction process, and the shape of the energy storage fabric can be customized by virtue of the knitting advantage of a fiber system, so that the fibrous zinc ion battery conforms to the human engineering design.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible batteries, and specifically to a construction method of a fibrous zinc-ion battery, a flexible battery fabric, and applications thereof. Background Art

[0002] With the technological integration and process development of high-precision and sophisticated products such as sensors and processors, electronic devices have become more integrated and multifunctional. Various devices with multi-scenario collaborative functions have emerged, and the world has embarked on the journey of the Internet of Everything. Wearable electronic devices, which are closest to people, have started to receive the favor of capital. Against this background, flexible energy storage devices have become a major research hotspot. Flexible energy storage devices should have excellent mechanical properties, miniaturization, water wash resistance, high pressure resistance, and aesthetic diversity. However, the most important thing is still a sufficiently long service life, a sufficiently large battery capacity, and battery safety. Lithium-ion batteries are favored by scholars due to their high specific capacity, but their characteristics such as being flammable, explosive, and toxic have restricted their development. Aqueous zinc-ion secondary batteries are potential candidates for flexible energy storage due to their excellent safety, environmental friendliness, low cost of raw materials that are not restricted by resources.

[0003] However, its electrolyte uses water as a solvent, which can cause many side reactions. For example, on the surface of the metal zinc negative electrode, it can cause corrosion, form electrochemically inert and irreversible by-products, and there can also be water decomposition, dissolution of the positive electrode active material, etc. These problems will increase the battery polarization, capacity attenuation, and battery swelling, thereby leading to a decline in battery performance. In addition, the uneven deposition of the metal zinc negative electrode in the liquid electrolyte will form dendrites, which has a great impact on the operating stability of the battery. Therefore, there is an urgent need to develop methods suitable for industrial application to solve the water-induced side reactions and dendrite growth problems of the metal zinc negative electrode in aqueous zinc-ion batteries.

[0004] Among many measures, constructing a hydrogel material to construct the electrolyte can effectively reduce the water content of the electrolyte, homogenize the ion transport channels, inhibit the growth of zinc dendrites, and reduce the dissolution of the positive electrode active material. Nowadays, there are many studies on gel electrolytes for flexible zinc-ion batteries, but the prepared batteries all remain in the laboratory stage of a few centimeters and are difficult to be actually applied. This requires the introduction of a gel electrolyte with appropriate rheological properties, which can be uniformly loaded on the electrode surface and have excellent mechanical properties and electrical properties after polymerization to ensure the normal use of the device.

[0005] Based on this, the present invention provides a construction method of a fibrous zinc-ion battery, a flexible battery fabric, and applications thereof to solve the above-mentioned technical problems. Summary of the Invention

[0006] The object of the present invention is to provide a method for constructing a fibrous zinc-ion battery, a flexible battery fabric and an application thereof. The construction process of the fibrous zinc-ion battery prepared by using a gel electrolyte is simple, and by virtue of the braidable advantage of the fiber system, the shape of the energy storage fabric can be customized, which conforms to the ergonomic design, is highly integrated into the clothes that people wear daily, and serves as a new type of flexible battery device to supply power to common mobile devices.

[0007] To achieve the above object, the present invention provides the following technical solution: A method for constructing a fibrous zinc-ion battery, comprising the following steps:

[0008] Uniformly coat a gel electrolyte on the surface of a zinc wire and perform a drying treatment to form a fibrous negative electrode;

[0009] Coat a slurry containing a positive electrode active material on a current collector, after drying, uniformly coat a gel electrolyte on its surface and perform a second drying to obtain a fibrous positive electrode;

[0010] Uniformly wind a separator around the periphery of the positive electrode, and then wind the negative electrode around the positive electrode in a spiral manner to form a battery core structure;

[0011] Immerse the battery core in an electrolyte, and immediately perform battery encapsulation treatment after the immersion is completed, thereby completing the construction of the fibrous zinc-ion battery.

[0012] Preferably, the slurry containing the positive electrode active material is stirred by a solvent and a powder.

[0013] Preferably, the mass fraction of the powder components is: zinc-embedded vanadium pentoxide 70%-90%, binder 10%-5%, conductive agent 20%-5%.

[0014] Preferably, the current collector is a 304 stainless steel wire, and the diameter of the current collector is 50 μm - 500 μm.

[0015] Preferably, the conductive agent is one or more of acetylene black, carbon nanotubes, SuperP, and graphite.

[0016] Preferably, the gel electrolyte is prepared by mixing k-carrageenan, water-soluble chitosan, sodium carboxymethyl cellulose, and styrene-butadiene rubber.

[0017] Preferably, the mass fraction of the k-carrageenan is between 20% and 40%.

[0018] Preferably, the mass fractions of the sodium carboxymethyl cellulose and the styrene-butadiene rubber are between 30% and 40%.

[0019] A flexible battery fabric, in the preparation process of the flexible battery fabric, the method for constructing a fibrous zinc-ion battery is used.

[0020] Application of a flexible battery fabric, which is applied to wearable electronic devices.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The fibrous zinc-ion battery prepared by using a gel electrolyte in the present invention has a simple construction process. Moreover, by virtue of the braidable advantage of the fiber system, the shape of the energy storage fabric can be customized, which conforms to the ergonomic design, can be highly integrated into the clothes people wear daily, and can be used as a new type of flexible battery device to power common mobile devices. The fiber battery obtained in the present invention can maintain a capacity retention rate of more than 90% after 100 charge-discharge cycles.

[0023] The fibrous zinc-ion battery of the present invention has good electrochemical performance. While the positive electrode is less likely to dissolve, the negative electrode is not easily corroded, showing better electrochemical performance.

[0024] In summary, the fibrous zinc-ion battery prepared in the present invention has a higher specific capacity and a longer service life, and the synthesis raw materials are cheap and easy to obtain, the synthesis process is simple and energy-saving, the preparation of the working electrode is simple, and the device assembly process is simple and fast. It is suitable for mass production and has broad application prospects. Description of the Drawings

[0025] Figure 1 Charge-discharge cycle curve graphs of the fibrous zinc-ion battery prepared in Example 1 of the present invention using gel protection and the fibrous zinc-ion battery prepared in Example 2 without using gel protection;

[0026] Figure 2 is Figure 1 Zinc ion concentration distribution diagrams near the negative electrode of the fibrous zinc-ion battery prepared in Example 2 of the present invention without using gel protection and the fibrous zinc-ion battery prepared in Example 1 using gel protection;

[0027] Figure 3 Energy storage fabric woven by parallel connection and series connection of the fibrous zinc-ion battery using gel-protected electrodes prepared in Example 4 of the present invention. Detailed Embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0029] Example 1

[0030] In this embodiment, the present invention provides a method for constructing a fibrous zinc-ion battery, which includes the following steps:

[0031] Step 1: Use anhydrous ethanol to ultrasonically wash the stainless steel wire and zinc wire for 1 h, then ultrasonically wash with deionized water three times, with each washing time being 20 min, and then place them in a blast drying oven at 80 °C for drying for 24 h for standby.

[0032] Step 2: Excessively add 2 g of water-soluble chitosan to 50 ml of deionized water solution, stir for 7 days, filter, and take the clarified solution. Slowly add 100 mg of κ-carrageenan powder to the solution therein, and stir for 24 h until the powder is completely dissolved. Subsequently, slowly add 80 mg of sodium carboxymethylcellulose powder to the solution therein, and stir for 24 h until the powder is completely dissolved. Finally, dropwise add styrene-butadiene rubber emulsion to the solution in the solution, with the added amount being 250 mg, and slowly stir for 8 h until the emulsion is completely mixed for standby.

[0033] Step 3: Weigh 34 g of zinc chloride powder, add it to 125 ml of deionized water, stir until completely dissolved, weigh 4 g of vanadium pentoxide powder and add it thereto, stir for 72 h, repeatedly rinse with deionized water, and then place it in a blast drying oven at 80 °C for drying. After the water is completely removed, grind it into powder for standby.

[0034] Step 4: Take 1.9 g of N-methylpyrrolidone, and sequentially add 0.1 g of polyvinylidene fluoride, 0.1 g of acetylene black, and 0.8 g of the powder prepared in Step 3 thereto, stir for 24 h until the slurry is uniform, and add it to the slurry pool. Pass the steel wire through the bottom of the slurry pool, the electrode drying oven, and fix it on the electrode collector. Connect the electrode drying oven, preheat it to 140 °C, and then collect the electrode at a speed of 20 cm / min for standby.

[0035] Step 5: Add the gel prepared in Step 2 to the slurry pool. Pass the positive electrode prepared in Step 4 and the zinc wire that has been cleaned in Step 1 through the bottom of the slurry pool, the electrode drying oven, and fix them on the electrode collector. Connect the electrode drying oven, preheat it to 60 °C, and then collect the positive and negative electrodes at a speed of 20 cm / min.

[0036] Step 6: Cut the cellulose separator into long strips with a width of 1.5 mm, and continuously and evenly wind it around the positive and negative electrodes prepared in Step 5. Subsequently, wind the positive and negative electrodes with the wound separator in a spiral manner.

[0037] Step 7: Add 28.75 g of zinc sulfate heptahydrate to 30 ml of deionized water and stir evenly. Transfer the solution to a 50-ml volumetric flask, and then supplement with deionized water to make up to 50 ml. Immerse the wound positive and negative electrodes in step 6 in the electrolyte for 30 min. Cut the Parafilm into strips 1 cm wide. Then, wind the cut Parafilm around one end of the battery and fix it on the battery collector. Synchronously wind the Parafilm and collect the battery.

[0038] Take 10 g of PVB powder and slowly add it to 40 g of absolute ethanol, stir for 24 h until the powder is completely dissolved. Add the obtained solution to the slurry tank. Pass the battery completed in step 7 through the bottom of the slurry tank, the drying oven, and fix it on the collector. Connect the drying oven to the power supply, preheat it to 60 °C, and then collect the battery at a speed of 20 cm / min to complete the preparation of the battery.

[0039] Example 2

[0040] In this example, the present invention proposes a method for constructing a fibrous zinc-ion battery, including the following steps:

[0041] Step 1: Use absolute ethanol to ultrasonically wash the stainless steel wire and zinc wire for 1 h, then ultrasonically wash with deionized water 3 times, each time for 20 min, and then put them in a blast drying oven at 80 °C for drying for 24 h for standby;

[0042] Step 2: Excessively add 2 g of water-soluble chitosan to 50 ml of deionized water solution, stir for 7 days, filter, take the clear solution, slowly add 100 mg of K-carrageenan powder to the solution therein, stir for 24 h until the powder is completely dissolved, and then, slowly add 80 mg of sodium carboxymethyl cellulose powder to the solution therein, stir for 24 h until the powder is completely dissolved. Finally, dropwise add styrene-butadiene rubber emulsion to the solution in the solution, and the added amount is 250 mg. Slowly stir for 8 h until the emulsion is completely mixed for standby;

[0043] Step 3: Weigh 34 g of zinc chloride powder, add it to 125 ml of deionized water, stir until completely dissolved, weigh 4 g of vanadium pentoxide powder and add it thereto, stir for 72 h, repeatedly rinse with deionized water and then place it in a blast drying oven at 80 °C for drying. After the water is completely removed, grind it into powder for standby;

[0044] Step 4: Take 1.9 g of N-methylpyrrolidone, and successively add 0.1 g of polyvinylidene fluoride, 0.1 g of acetylene black, and 0.8 g of the powder prepared in Step 3 thereto. Stir for 24 h until the slurry is uniform, add it to the slurry pool, pass a steel wire through the bottom of the slurry pool and the electrode drying oven, and fix it on the electrode collector. Connect the electrode drying oven and preheat it to 140 °C, and then collect the electrode at a speed of 20 cm / min for standby;

[0045] Step 5: Cut the cellulose separator into strips with a width of 1.5 mm, and continuously and evenly wind it around the positive and negative electrodes. Then, helically wind the positive and negative electrodes wrapped with the separator;

[0046] Step 6: Add 28.75 g of zinc sulfate heptahydrate to 30 ml of deionized water, stir evenly, transfer the solution to a 50 ml volumetric flask, and then supplement deionized water to make the volume up to 50 ml. Immerse the positive and negative electrodes wound in Step 5 in the electrolyte for 30 min. Cut the Parafilm into strips with a width of 1 cm. Then, wind the cut Parafilm around one end of the battery and fix it on the battery collector, and simultaneously wind the Parafilm and collect the battery;

[0047] Step 7: Take 10 g of PVB powder, slowly add it to 40 g of absolute ethanol, stir for 24 h until the powder is completely dissolved, add the obtained solution to the slurry pool, pass the battery wrapped in Step 6 through the bottom of the slurry pool and the drying oven, and fix it on the collector. Connect the electrode drying oven and preheat it to 60 °C, and then collect the battery at a speed of 20 cm / min to complete the preparation of the battery, as shown in Table 1:

[0048] Table 1 Parameter table of charge and discharge times and capacity retention rate of Example 1 and Example 2

[0049]

[0050]

[0051] Please refer to Figure 1 and Table 1. After 50 charge and discharge cycles, the capacity retention rate of the fiber battery without using the gel is only 28%, while that of the fiber battery protected by the gel is as high as 90% after experiencing the same usage conditions.

[0052] From Figure 2 as shown, the zinc ion concentration distribution diagrams near the negative electrodes of the fiber-shaped zinc ion batteries prepared in Example 2 without gel protection and Example 1 with gel protection of the present invention can be obtained. It can be seen that the zinc ion distribution on the surface of the negative electrode of the fiber-shaped zinc ion battery using the gel is more uniform, and the zinc ions are dispersed in the gel, effectively preventing the uneven deposition of zinc ions.

[0053] Example 3

[0054] In this embodiment, the present invention provides a method for preparing a flexible battery fabric, comprising the following steps:

[0055] Step 1: Use anhydrous ethanol to ultrasonically wash the stainless steel wire and zinc wire for 1 h, then ultrasonically wash with deionized water three times, with each washing time being 20 min, and then place them in a blast drying oven at 80 °C and dry for 24 h for standby;

[0056] Step 2: Excessively add 2 g of water-soluble chitosan to 50 ml of deionized water solution, stir for 7 days, filter, take the clarified solution, slowly add 100 mg of K-carrageenan powder to the solution therein, stir for 24 h until the powder is completely dissolved, then, slowly add 80 mg of sodium carboxymethylcellulose powder to the solution therein, stir for 24 h until the powder is completely dissolved, and finally, dropwise add styrene-butadiene rubber emulsion to the solution in the solution, with the added amount being 250 mg, and slowly stir for 8 h until the emulsion is completely mixed for standby;

[0057] Step 3: Weigh 34 g of zinc chloride powder, add it to 125 ml of deionized water, stir until completely dissolved, weigh 4 g of vanadium pentoxide powder and add it thereto, stir for 72 h, repeatedly rinse with deionized water and then place it in a blast drying oven at 80 °C for drying. After the water is completely removed, grind it into powder for standby;

[0058] Step 4: Take 1.9 g of N-methylpyrrolidone, sequentially add 0.1 g of polyvinylidene fluoride, 0.1 g of acetylene black and 0.8 g of the powder prepared in Step 3 thereto, stir for 24 h until the slurry is uniform, add it to the slurry pool, pass the steel wire through the bottom of the slurry pool, the electrode drying oven, and fix it on the electrode collector. Connect the electrode drying oven and preheat it to 140 °C, and then collect the electrode at a speed of 20 cm / min for standby;

[0059] Step 5: Add the gel prepared in Step 2 to the slurry pool, pass the positive electrode prepared in Step 4 and the zinc wire that has been cleaned in Step 1 through the bottom of the slurry pool, the electrode drying oven, and fix them on the electrode collector. Connect the electrode drying oven and preheat it to 60 °C, and then collect the positive and negative electrodes at a speed of 20 cm / min;

[0060] Step 6: Cut the cellulose separator into strips with a width of 1.5 mm, continuously and evenly wind it around the positive and negative electrodes prepared in Step 5, and then, helically wind the positive and negative electrodes with the wound separator;

[0061] Step 7: Add 28.75 g of zinc sulfate heptahydrate to 30 ml of deionized water, stir evenly, transfer the solution to a 50-ml volumetric flask, then supplement deionized water to make the volume up to 50 ml. Immerse the wound positive and negative electrodes in the electrolyte for 30 min. Cut the Parafilm into strips 1 cm wide. Then, wind the cut Parafilm around one end of the battery and fix it on the battery collector. Synchronously wind the Parafilm and collect the battery.

[0062] Step 8: Take 10 g of PVB powder and slowly add it to 40 g of absolute ethanol. Stir for 24 h until the powder is completely dissolved. Add the obtained solution to the slurry pool. Pass the battery wrapped in Step 7 through the bottom of the slurry pool and the drying oven, and fix it on the collector. Connect the electrode drying oven and preheat it to 60 °C. Then collect the battery at a speed of 20 cm / min to complete the construction of the battery.

[0063] Step 9: Use the constructed fiber battery and wool yarn as the weft and put them into a loom to weave an energy storage fabric.

[0064] Example 4

[0065] In this example, the present invention provides a preparation method and application of a flexible battery fabric. Specifically, the preparation method of the flexible battery fabric includes the following steps:

[0066] Step 1: Ultrasonically wash the stainless steel wire and zinc wire with absolute ethanol for 1 h, then ultrasonically wash them with deionized water 3 times, with each washing time being 20 min. Then put them into a blast drying oven at 80 °C and dry for 24 h for standby.

[0067] Step 2: Excessively add 2 g of water-soluble chitosan to 50 ml of deionized water solution, stir for 7 days, filter, and take the clarified solution. Slowly add 100 mg of K-carrageenan powder to the solution and stir for 24 h until the powder is completely dissolved. Subsequently, slowly add 80 mg of sodium carboxymethylcellulose powder to the solution and stir for 24 h until the powder is completely dissolved. Finally, dropwise add styrene-butadiene rubber emulsion to the solution in the amount of 250 mg, and slowly stir for 8 h until the emulsion is completely mixed for standby.

[0068] Step 3: Weigh 34 g of zinc chloride powder, add it to 125 ml of deionized water, stir until completely dissolved, weigh 4 g of vanadium pentoxide powder and add it thereto, stir for 72 h, repeatedly rinse with deionized water, then place it in a blast drying oven at 80 °C for drying. After the water is completely removed, grind it into powder for standby.

[0069] Step 4: Take 1.9 g of N-methylpyrrolidone, and successively add 0.1 g of polyvinylidene fluoride, 0.1 g of acetylene black, and 0.8 g of the powder prepared in Step 3 thereto. Stir for 24 h until the slurry is uniform, add it to the slurry pool, pass a steel wire through the bottom of the slurry pool, an electrode drying oven, and fix it on the electrode collector. Connect the electrode drying oven and preheat it to 140 °C, and then collect the electrode at a speed of 20 cm / min for standby;

[0070] Step 5: Add the gel prepared in Step 2 to the slurry pool, pass the positive electrode prepared in Step 4 and the zinc wire that has been cleaned in Step 1 through the bottom of the slurry pool, an electrode drying oven, and fix them on the electrode collector. Connect the electrode drying oven and preheat it to 60 °C, and then collect the positive and negative electrodes at a speed of 20 cm / min;

[0071] Step 6: Cut the cellulose separator into strips with a width of 1.5 mm, and continuously and evenly wind it around the positive and negative electrodes prepared in Step 5. Subsequently, wind the positive and negative electrodes wound with the separator in a spiral manner;

[0072] Step 7: Add 28.75 g of zinc sulfate heptahydrate to 30 ml of deionized water, stir evenly, transfer the solution to a 50-ml volumetric flask, and then supplement deionized water to make the volume up to 50 ml. Immerse the positive and negative electrodes wound in Step 6 in the electrolyte for 30 min. Cut the Parafilm into strips with a width of 1 cm. Subsequently, wind the cut Parafilm around one end of the battery and fix it on the battery collector, and simultaneously wind the Parafilm and collect the battery;

[0073] Step 8: Take 10 g of PVB powder, slowly add it to 40 g of absolute ethanol, stir for 24 h until the powder is completely dissolved, add the obtained solution to the slurry pool, pass the battery wrapped in Step 7 through the bottom of the slurry pool, a drying oven, and fix it on the collector. Connect the electrode drying oven and preheat it to 60 °C, and then collect the battery at a speed of 20 cm / min to complete the construction of the battery;

[0074] Step 9: Connect 4 constructed fiber batteries in series, and then use them together with wool yarn as the weft to put them into a loom for weaving to obtain an energy storage fabric with an open-circuit voltage of 4.8 V.

[0075] As shown by Figure 3 the optical photograph of the energy storage fabric woven by parallel connection and series connection of the fiber-shaped zinc ion battery using the gel to protect the electrode prepared in Example 4 of the present invention, which is connected to a watch charger and charges a smart watch. As shown by Figure 3 it can be seen that the fabric can provide sufficient output power to charge smart wearable devices.

[0076] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0077] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A method for constructing a fibrous zinc ion battery, characterized in that: The following steps are involved: S1, uniformly coating the surface of the zinc wire with a gel electrolyte and drying it to form a fibrous negative electrode; S2, coating a slurry containing a positive electrode active material on the current collector, drying it, then evenly coating the surface with a gel electrolyte, and drying it again to obtain a fibrous positive electrode; S3, winding the separator evenly around the positive electrode, and then winding the negative electrode on the positive electrode in a spiral manner to form a battery cell structure; S4. Soak the battery cell in electrolyte, and immediately perform battery packaging after the soaking is completed, thereby completing the construction of the fibrous zinc ion battery.

2. The method for constructing a fibrous zinc ion battery according to claim 1, characterized in that: The slurry containing the positive electrode active material is prepared by stirring a solvent and a powder.

3. The method for constructing a fibrous zinc ion battery according to claim 2, characterized in that: The mass fractions of the powder components are: 70%-90% of zinc-embedded vanadium pentoxide, 10%-5% of adhesive, and 20%-5% of conductive agent.

4. The method for constructing a fibrous zinc ion battery according to claim 1, characterized in that: The current collector is 304 stainless steel wire, and the diameter of the current collector is 50 μm-500 μm.

5. The method for constructing a fibrous zinc ion battery according to claim 3, characterized in that: The conductive agent is one or more of acetylene black, carbon nanotubes, SuperP and graphite.

6. The method for constructing a fibrous zinc ion battery according to claim 1, characterized in that: The gel electrolyte is prepared by mixing k-carrageenan, water-soluble chitosan, sodium carboxymethyl cellulose and styrene-butadiene rubber.

7. The method for constructing a fibrous zinc ion battery according to claim 6, characterized in that: The mass fraction of the k-carrageenan is between 20% and 40%.

8. The method for constructing a fibrous zinc ion battery according to claim 6, characterized in that: The mass fractions of the sodium carboxymethyl cellulose and styrene-butadiene rubber are between 30% and 40%.

9. A flexible battery fabric, characterized in that During the preparation of the flexible battery fabric, the method for constructing a fibrous zinc ion battery according to any one of claims 1 to 8 is used.

10. An application of a flexible battery fabric, characterized in that: The flexible battery fabric described in claim 9 is applied to wearable electronic devices.

Images