An alkaline zinc-manganese battery and a method for preparing the same

Abstract

This invention belongs to the field of zinc-manganese battery technology, specifically relating to an alkaline zinc-manganese battery and its preparation method. The alkaline zinc-manganese battery includes a casing, a positive electrode ring, a negative electrode zinc paste, a separator, and an electrolyte. The positive electrode ring is composed of the following components by weight percentage: 90-93 wt% electrolytic manganese dioxide, 3-6 wt% composite additive, 0.5-1.5 wt% binder, with the balance being electrolyte. The composite additive is prepared by the following process: scandium and carbon powder are mixed uniformly, sintered in a gradient under an argon atmosphere, and cooled, washed, and dried to obtain scandium carbide; sodium borohydride and the scandium carbide are mixed, calcined under an argon atmosphere, and cooled, washed, and dried to obtain the composite additive. The alkaline zinc-manganese battery prepared by this invention exhibits excellent discharge performance and a long service life.

Description

Technical Field

[0001] This invention belongs to the field of zinc-manganese battery technology, specifically relating to an alkaline zinc-manganese battery and its preparation method. Background Technology

[0002] In today's era of rapid economic and technological development, people's living standards are constantly improving, and their demands for electronic products are also increasing. With the continuous upgrading and innovation of various small electronic products, the performance requirements for primary batteries are also rising. Currently, the main primary batteries used in the market are lithium-ion batteries and alkaline zinc-manganese batteries. Lithium-ion batteries have high energy density and light weight, making them suitable for high-power devices; however, the scarcity of lithium resources and the underdeveloped recycling industry chain result in high prices. Alkaline zinc-manganese batteries, on the other hand, have abundant raw material resources and advantages such as high battery capacity, excellent low-to-medium current discharge performance, and a wide operating temperature range. They can meet the basic performance requirements of everyday electrical appliances and are more widely and commonly used in small electronic devices.

[0003] Alkaline zinc-manganese batteries primarily use zinc as the negative electrode material and electrolytic manganese dioxide as the main positive electrode material, along with conductive agents, binders, oxides, and other additives. Because manganese dioxide is a semiconductor material with poor conductivity, the positive electrode reaction is slow and electron transport capacity is low. Therefore, zinc-manganese batteries suffer from low active energy utilization and severe positive electrode polarization. Graphite-based conductive agents and salt additives need to be added to the positive electrode to reduce internal resistance, increase output power, and extend battery operating time. However, the addition of these substances reduces the manganese dioxide content, thus affecting the battery's charge and discharge capacity. Furthermore, the crystal structure, impurity content, particle size distribution, and pore structure of manganese dioxide itself also affect its discharge performance. Therefore, it is necessary to rationally control the selection and combination of the various components to improve the overall performance of zinc-manganese batteries. Summary of the Invention

[0004] The primary objective of this invention is to provide an alkaline zinc-manganese battery with excellent discharge performance and a long service life.

[0005] The second objective of this invention is to provide a method for preparing the above-mentioned alkaline zinc-manganese battery.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] An alkaline zinc-manganese battery includes a casing, a positive electrode ring, a negative electrode zinc paste, a separator, and an electrolyte; the positive electrode ring is composed of the following components in weight percentage: 90-93 wt% electrolytic manganese dioxide, 3-6 wt% composite additives, 0.5-1.5 wt% binder, and the balance being electrolyte;

[0008] The composite additive is prepared by the following process:

[0009] (1) Scandium and carbon powder are mixed evenly, and then sintered in a gradient under an argon atmosphere. After cooling, washing and drying, scandium carbide is obtained.

[0010] (2) Sodium borohydride and scandium carbide are mixed, calcined in an argon atmosphere, cooled, washed and dried to obtain a composite additive.

[0011] Further, the mass ratio of scandium to carbon powder in step (1) is (4-6):1; the gradient sintering step is: first sinter at 850-950 ℃ for 2-3 h, and then heat up to 1300-1450 ℃ for 1-2 h.

[0012] Further, in step (2), the mass ratio of sodium borohydride to scandium carbide is 1:(0.25-0.8); the calcination temperature is 450-650 ℃ and the time is 2-4 h.

[0013] Furthermore, the negative electrode zinc paste is composed of the following components by weight percentage: 55-69 wt% modified zinc powder, 1-3 wt% binder, and the balance being electrolyte.

[0014] Furthermore, the modified zinc powder is prepared by the following process:

[0015] (a) Zinc and aluminum are mixed and heated to melt and then atomized under an argon atmosphere to obtain zinc-aluminum alloy particles;

[0016] (b) The zinc-aluminum alloy particles are placed in a hydrofluoric acid solution, and after ultrasonication, filtration, washing and drying, porous zinc particles are obtained;

[0017] (c) Add 1-phenyl-3-amino-1-propanone and the porous zinc particles to acetone, stir ultrasonically, filter, wash and dry to obtain the modified zinc powder.

[0018] Further, in step (a), the mass ratio of zinc to aluminum is 1:(0.05-0.1); the gas used for atomization is argon, and the gas pressure is 2-5 MPa.

[0019] Further, in step (b), the ratio of zinc-aluminum alloy particles to hydrofluoric acid solution is 1 g: (1-1.5) mL; the mass concentration of the hydrofluoric acid solution is 10-25%; and the ultrasonication time is 10-20 min.

[0020] Further, in step (c), the ratio of porous zinc particles, 1-phenyl-3-amino-1-propanone, and acetone is 1 g: (0.05-0.1) g: (8-10) mL; and the ultrasonic stirring time is 10-15 h.

[0021] Furthermore, the electrolyte is a potassium hydroxide aqueous solution with a mass concentration of 30-36%, and the binder is composed of hydroxymethyl cellulose and polyacrylic acid in a mass ratio of (1.5-3):1.

[0022] The above-mentioned method for preparing alkaline zinc-manganese batteries includes the following steps:

[0023] The components of the positive electrode ring are mixed evenly, granulated, and pressed to obtain the positive electrode ring. The positive electrode ring is then placed into a casing, a separator is inserted, and electrolyte is injected. After standing, negative electrode zinc paste is injected to obtain an alkaline zinc-manganese battery.

[0024] The beneficial technical effects of this invention are as follows:

[0025] 1. This invention provides an alkaline zinc-manganese battery in which a scandium carbide-boronene composite material is used as a composite additive in the positive electrode ring, which can improve the discharge performance of the zinc-manganese battery. Specifically, this invention first prepares scandium carbide, and then uses sodium borohydride as a raw material for preparing boronene, mixing and calcining them to obtain the scandium carbide-boronene composite material. Boronene has excellent electrical conductivity and chemical reactivity; its layered structure can wet more electrolyte, increasing the battery's energy density and improving electron and ion transport capabilities. After being combined with scandium carbide, boronene can form a stable electron transport network. As a positive electrode additive, it can optimize the electrode's microstructure, improve the electrode's structural stability, enhance the battery's output performance, and extend the battery's lifespan.

[0026] 2. This invention uses porous zinc powder loaded with Mannich base as a zinc source in the negative electrode zinc paste, which can inhibit zinc paste expansion and leakage, and improve service life. Specifically, porous zinc powder has a high specific surface area and abundant pore structure, which can increase the effective contact area of ​​the material, improve the utilization rate of zinc and reduce local current density. It can also alleviate volume expansion during charging and discharging, reduce internal stress of the material, and improve the structural stability of the battery. Modifying the zinc powder by loading Mannich base can improve the chemical stability of the zinc powder, inhibit hydrogen evolution reaction and electrolyte corrosion, improve the dispersibility of zinc powder, optimize the dispersion conditions of substances in the negative electrode, and inhibit the occurrence of problems such as negative electrode zinc paste expansion and leakage. Attached Figure Description

[0027] Figure 1 This is a scanning electron microscope image of the composite additive prepared in Example 1 of the present invention;

[0028] Figure 2 This is a scanning electron microscope image of the modified zinc powder prepared in Example 1 of the present invention. Detailed Implementation

[0029] The following is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention. Specific conditions not specified in the embodiments are performed according to conventional conditions or conditions recommended by the manufacturer. Unless otherwise specified, all reagents or instruments used are conventional products obtained through commercial channels.

[0030] (I) Implementation Examples

[0031] Example 1

[0032] Example 1 provides an alkaline zinc-manganese battery, comprising a casing, a positive electrode ring, a negative electrode zinc paste, a separator, and an electrolyte; the positive electrode ring is composed of the following components by weight percentage: 91 wt% electrolytic manganese dioxide, 5 wt% composite additives, 1 wt% binder, with the balance being electrolyte; the negative electrode zinc paste is composed of the following components by weight percentage: 62 wt% modified zinc powder, 2 wt% binder, with the balance being electrolyte; wherein the binder is a mixture of hydroxymethyl cellulose and polyacrylic acid in a mass ratio of 2:1, and the electrolyte is a 35% potassium hydroxide aqueous solution.

[0033] The composite additive is prepared by the following process:

[0034] (1) According to the mass ratio of scandium to carbon powder 5:1, scandium and carbon powder are mixed evenly and placed in a tube furnace. Argon gas is introduced, the temperature is first raised to 900 ℃ for 2 h, and then raised to 1400 ℃ for 1 h. The instrument is turned off and allowed to cool. Then the solid material is taken out, washed, and dried to obtain scandium carbide.

[0035] (2) Sodium borohydride and scandium carbide were mixed evenly at a mass ratio of 1:0.5, and calcined at 500 °C for 3 h in an argon atmosphere. The solid material was removed, washed, and dried to obtain the composite additive. The scanning electron microscope image of the composite additive prepared in this embodiment is shown below. Figure 1 As shown.

[0036] The modified zinc powder is prepared by the following process:

[0037] (a) Zinc and aluminum were mixed and heated to melt according to a zinc to aluminum mass ratio of 1:0.08. The mixture was kept in a molten state and transferred to an atomizer. Argon gas (pressure 3 MPa) was introduced for atomization to obtain zinc-aluminum alloy particles.

[0038] (b) According to the ratio of zinc-aluminum alloy particles to hydrofluoric acid solution of 1g:1.2mL, zinc-aluminum alloy particles were added to a 20% hydrofluoric acid solution and sonicated for 15 min. After filtration, washing and drying, porous zinc particles were obtained.

[0039] (c) Following a ratio of porous zinc particles, 1-phenyl-3-amino-1-propanone (CAS: 2677-69-2), and acetone of 1 g: 0.08 g: 8 mL, 1-phenyl-3-amino-1-propanone and porous zinc particles were added to acetone and ultrasonically stirred for 12 h. After filtration, washing, and drying, modified zinc powder was obtained. The scanning electron microscope image of the modified zinc powder prepared in this example is shown below. Figure 2 As shown.

[0040] This embodiment also provides a method for preparing the above-mentioned alkaline zinc-manganese battery, the specific steps of which are as follows:

[0041] Weigh the raw materials for the positive electrode ring according to the above weight percentages and mix them evenly. Granulate and press the mixture to obtain the positive electrode ring. Weigh the raw materials for the negative electrode zinc paste according to the above weight percentages. First, dry mix the modified zinc powder and binder, then add the electrolyte and vacuum wet mix to obtain the negative electrode zinc paste. Install the positive electrode ring into the battery casing, place the separator in it and inject the electrolyte. Let it stand until the electrolyte completely wets the separator, and then inject the negative electrode zinc paste to obtain an alkaline zinc-manganese battery.

[0042] Example 2

[0043] Example 2 provides an alkaline zinc-manganese battery, comprising a casing, a positive electrode ring, a negative electrode zinc paste, a separator, and an electrolyte; the positive electrode ring is composed of the following components by weight percentage: 90 wt% electrolytic manganese dioxide, 3 wt% composite additives, 0.5 wt% binder, with the balance being electrolyte; the negative electrode zinc paste is composed of the following components by weight percentage: 55 wt% modified zinc powder, 1 wt% binder, with the balance being electrolyte; wherein the binder is a mixture of hydroxymethyl cellulose and polyacrylic acid in a mass ratio of 1.5:1, and the electrolyte is a 30% (w / w) potassium hydroxide aqueous solution.

[0044] The composite additive is prepared by the following process:

[0045] (1) According to the mass ratio of scandium to carbon powder 4:1, scandium and carbon powder are mixed evenly and placed in a tube furnace. Argon gas is introduced, the temperature is first raised to 850 ℃ for 2 h, and then raised to 1300 ℃ for 1 h. The instrument is turned off and allowed to cool. Then the solid material is taken out, washed, and dried to obtain scandium carbide.

[0046] (2) Sodium borohydride and scandium carbide were mixed evenly according to the mass ratio of sodium borohydride to scandium carbide 1:0.25, and calcined at 450 °C for 2 h in an argon atmosphere. The solid material was taken out, washed and dried to obtain the composite additive.

[0047] The modified zinc powder is prepared by the following process:

[0048] (a) Zinc and aluminum were mixed and heated to melt according to a zinc to aluminum mass ratio of 1:0.05. The mixture was kept in a molten state and transferred to an atomizer. Argon gas (pressure 2 MPa) was introduced for atomization to obtain zinc-aluminum alloy particles.

[0049] (b) According to the ratio of zinc-aluminum alloy particles to hydrogen fluoride solution of 1 g: 1 mL, zinc-aluminum alloy particles were added to a 10% hydrofluoric acid solution and sonicated for 10 min. After filtration, washing and drying, porous zinc particles were obtained.

[0050] (c) According to the ratio of porous zinc particles, 1-phenyl-3-amino-1-propanone and acetone, 1 g: 0.05 g: 8 mL, 1-phenyl-3-amino-1-propanone and porous zinc particles were added to acetone, ultrasonically stirred for 10 h, filtered, washed and dried to obtain modified zinc powder.

[0051] This embodiment also provides a method for preparing the above-mentioned alkaline zinc-manganese battery, the specific steps of which are as follows:

[0052] Weigh the raw materials for the positive electrode ring according to the above weight percentages and mix them evenly. Granulate and press the mixture to obtain the positive electrode ring. Weigh the raw materials for the negative electrode zinc paste according to the above weight percentages. First, dry mix the modified zinc powder and binder, then add the electrolyte and vacuum wet mix to obtain the negative electrode zinc paste. Install the positive electrode ring into the battery casing, place the separator in it and inject the electrolyte. Let it stand until the electrolyte completely wets the separator, and then inject the negative electrode zinc paste to obtain an alkaline zinc-manganese battery.

[0053] Example 3

[0054] Example 3 provides an alkaline zinc-manganese battery, comprising a casing, a positive electrode ring, a negative electrode zinc paste, a separator, and an electrolyte; the positive electrode ring is composed of the following components by weight percentage: 93 wt% electrolytic manganese dioxide, 6 wt% composite additives, 1.5 wt% binder, with the balance being electrolyte; the negative electrode zinc paste is composed of the following components by weight percentage: 69 wt% modified zinc powder, 3 wt% binder, with the balance being electrolyte; wherein the binder is a mixture of hydroxymethyl cellulose and polyacrylic acid in a mass ratio of 3:1, and the electrolyte is a 36% (w / w) potassium hydroxide aqueous solution.

[0055] The composite additive is prepared by the following process:

[0056] (1) According to the mass ratio of scandium to carbon powder 6:1, scandium and carbon powder are mixed evenly and placed in a tube furnace. Argon gas is introduced, the temperature is first raised to 950 ℃ for 3 h, and then raised to 1450 ℃ for 2 h. The instrument is turned off and allowed to cool. Then the solid material is taken out, washed, and dried to obtain scandium carbide.

[0057] (2) Sodium borohydride and scandium carbide were mixed evenly according to the mass ratio of sodium borohydride to scandium carbide of 1:0.8, and calcined at 650 °C for 4 h in an argon atmosphere. The solid material was taken out, washed and dried to obtain the composite additive.

[0058] The modified zinc powder is prepared by the following process:

[0059] (a) Zinc and aluminum are mixed and heated to melt according to a zinc to aluminum mass ratio of 1:0.1. The mixture is kept in a molten state and transferred to an atomizer. Argon gas (pressure 5 MPa) is introduced for atomization to obtain zinc-aluminum alloy particles.

[0060] (b) According to the ratio of zinc-aluminum alloy particles to hydrogen fluoride solution of 1 g: 1.5 mL, zinc-aluminum alloy particles were added to a 25% hydrofluoric acid solution and sonicated for 20 min. After filtration, washing and drying, porous zinc particles were obtained.

[0061] (c) According to the ratio of porous zinc particles, 1-phenyl-3-amino-1-propanone and acetone, 1 g: 0.1 g: 10 mL, 1-phenyl-3-amino-1-propanone and porous zinc particles were added to acetone, ultrasonically stirred for 15 h, filtered, washed and dried to obtain modified zinc powder.

[0062] This embodiment also provides a method for preparing the above-mentioned alkaline zinc-manganese battery, the specific steps of which are as follows:

[0063] Weigh the raw materials for the positive electrode ring according to the above weight percentages and mix them evenly. Granulate and press the mixture to obtain the positive electrode ring. Weigh the raw materials for the negative electrode zinc paste according to the above weight percentages. First, dry mix the modified zinc powder and binder, then add the electrolyte and vacuum wet mix to obtain the negative electrode zinc paste. Install the positive electrode ring into the battery casing, place the separator in it and inject the electrolyte. Let it stand until the electrolyte completely wets the separator, and then inject the negative electrode zinc paste to obtain an alkaline zinc-manganese battery.

[0064] (ii) Comparative Example

[0065] Comparative Example 1

[0066] Comparative Example 1 is basically the same as Example 1, except that the composite additive in Example 1 is replaced with borene.

[0067] Borogenene was prepared by the following method: lithium borohydride and sodium chloride were uniformly mixed at a molar ratio of 1:1.2, heated at 500 °C for 3 h in a mixed gas atmosphere of hydrogen and argon at a volume ratio of 1:3, and then washed, filtered and dried to obtain borogenene.

[0068] Comparative Example 2

[0069] Comparative Example 2 is basically the same as Example 1, except that the composite additive in Example 1 is replaced with a mixture of borene and scandium carbide, wherein the mass ratio of borene to scandium carbide is 3:5; the preparation method of borene is the same as that of Comparative Example 1.

[0070] Comparative Example 3

[0071] Comparative Example 3 is basically the same as Example 1, except that the modified zinc powder in Example 1 is replaced with zinc powder.

[0072] Comparative Example 4

[0073] Comparative Example 4 is basically the same as Example 1, except that the modified zinc powder in Example 1 is replaced with porous zinc powder.

[0074] (III) Test Examples

[0075] The alkaline zinc-manganese batteries prepared in Examples 1-3 and Comparative Examples 1-4 were subjected to performance tests, and the discharge performance results are shown in Table 1.

[0076] Battery expansion test: The negative electrode zinc paste prepared in Examples 1-3 and Comparative Examples 1-4 were placed in a clean measuring cup and shaken until no air bubbles were present in the zinc paste; 5 mL of liquid paraffin was placed on top of the zinc paste for liquid sealing. The mixture was allowed to stand at room temperature, and the data were observed and recorded. The expansion rate was calculated based on the volume change before and after the expansion. The results are shown in Table 1.

[0077] Leakage test: Five sample batteries from each experimental group were placed in a 60 ℃ high-temperature chamber and kept at a constant temperature for 120 h. The leakage of the batteries was then observed, and the results are shown in Table 1.

[0078] Table 1 Test Results of Alkaline Zinc-Manganese Batteries

[0079]

[0080] As shown in Table 1, the alkaline zinc-manganese batteries prepared in Examples 1-3 of this invention have excellent discharge performance, stable performance, and long service life.

[0081] Compared to Example 1, Comparative Example 1 replaced the composite additive in Example 1 with borene, and Comparative Example 2 replaced the composite additive in Example 1 with a mixture of borene and scandium carbide. The discharge performance of both examples showed a significant decrease, indicating that the scandium carbide-borene composite material can improve the discharge performance of zinc-manganese batteries. Further analysis reveals that this invention uses a scandium carbide-borene composite material as a composite additive in the positive electrode ring. Borene possesses excellent electrical conductivity and chemical reactivity; its layered structure can wet more electrolyte, increasing the battery's energy density and improving electron and ion transport capabilities. The combination of borene and scandium carbide forms a stable electron transport network, which, as a positive electrode additive, optimizes the electrode's microstructure, improves its structural stability, enhances the battery's output stability, and improves discharge performance.

[0082] Comparative Example 3 replaced the modified zinc powder in Example 1 with zinc powder, and Comparative Example 4 replaced the modified zinc powder in Example 1 with porous zinc powder. The discharge performance decreased slightly, but the expansion rate and leakage increased. This indicates that the addition of modified zinc powder can significantly improve the problems of negative electrode zinc paste expansion and leakage. Specific analysis shows that this invention uses porous zinc powder loaded with Mannich base as the battery negative electrode material. Porous zinc powder has a high specific surface area and abundant pore structure, which can increase the effective contact area of ​​the material, improve zinc utilization, and reduce local current density. It can also alleviate volume expansion during charging and discharging, reduce internal stress of the material, and improve the structural stability of the battery. Modifying zinc powder by loading it with Mannich base can improve the chemical stability of the zinc powder, inhibit hydrogen evolution reaction and electrolyte corrosion, improve the dispersibility of the zinc powder, optimize the dispersion conditions of substances in the negative electrode, and suppress the occurrence of problems such as negative electrode zinc paste expansion and leakage.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. The basic principles and main features of the present invention have been described above with specific implementation schemes. Based on the present invention, some modifications or substitutions can be made, but these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of protection claimed by the present invention.

Claims

1. An alkaline zinc-manganese battery, characterized in that, It includes a shell, a positive electrode ring, a negative electrode zinc paste, a diaphragm, and an electrolyte; the positive electrode ring is composed of the following components by weight percentage: 90-93 wt% electrolytic manganese dioxide, 3-6 wt% composite additives, 0.5-1.5 wt% binder, and the balance being electrolyte; The composite additive is prepared by the following process: (1) Scandium and carbon powder are mixed evenly, and then sintered in a gradient under an argon atmosphere. After cooling, washing and drying, scandium carbide is obtained. (2) Sodium borohydride and scandium carbide are mixed, calcined in an argon atmosphere, cooled, washed and dried to obtain a composite additive.

2. The alkaline zinc-manganese battery according to claim 1, characterized in that, The mass ratio of scandium to carbon powder in step (1) is (4-6):1; the gradient sintering steps are: first sintering at 850-950 ℃ for 2-3 h, and then heating to 1300-1450 ℃ for 1-2 h.

3. The alkaline zinc-manganese battery according to claim 1, characterized in that, In step (2), the mass ratio of sodium borohydride to scandium carbide is 1:(0.25-0.8); the calcination temperature is 450-650 ℃ and the time is 2-4 h.

4. The alkaline zinc-manganese battery according to claim 1, characterized in that, The negative electrode zinc paste is composed of the following components by weight percentage: 55-69 wt% modified zinc powder, 1-3 wt% binder, and the balance being electrolyte.

5. The alkaline zinc-manganese battery according to claim 4, characterized in that, The modified zinc powder is prepared by the following process: (a) Zinc and aluminum are mixed and heated to melt and then atomized under an argon atmosphere to obtain zinc-aluminum alloy particles; (b) The zinc-aluminum alloy particles are placed in a hydrofluoric acid solution, and after ultrasonication, filtration, washing and drying, porous zinc particles are obtained; (c) Add 1-phenyl-3-amino-1-propanone and the porous zinc particles to acetone, stir ultrasonically, filter, wash and dry to obtain the modified zinc powder.

6. The alkaline zinc-manganese battery according to claim 5, characterized in that, In step (a), the mass ratio of zinc to aluminum is 1:(0.05-0.1); the gas used for atomization is argon, and the gas pressure is 2-5 MPa.

7. The alkaline zinc-manganese battery according to claim 5, characterized in that, In step (b), the ratio of zinc-aluminum alloy particles to hydrofluoric acid solution is 1 g: (1-1.5) mL; the mass concentration of the hydrofluoric acid solution is 10-25%; and the ultrasonication time is 10-20 min.

8. The alkaline zinc-manganese battery according to claim 5, characterized in that, In step (c), the ratio of porous zinc particles, 1-phenyl-3-amino-1-propanone, and acetone is 1 g: (0.05-0.1) g: (8-10) mL; and the ultrasonic stirring time is 10-15 h.

9. The alkaline zinc-manganese battery according to claim 1, characterized in that, The electrolyte is a 30-36% potassium hydroxide aqueous solution, and the binder is composed of hydroxymethyl cellulose and polyacrylic acid in a mass ratio of (1.5-3):

1.

10. A method for preparing an alkaline zinc-manganese battery according to any one of claims 1-9, characterized in that, Includes the following steps: The components of the positive electrode ring are mixed evenly, granulated and pressed to obtain the positive electrode ring; The positive electrode ring is installed into the casing, the diaphragm is placed in and the electrolyte is injected. After standing, the negative electrode zinc paste is injected to obtain an alkaline zinc-manganese battery.

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