Preparation method of battery and battery

Abstract

The invention relates to a preparation method of a battery and the battery. The preparation method of the battery comprises the following steps: preparing a battery cathode based on barium nitrate, cobalt nitrate hexahydrate, ferric nitrate nonahydrate, zirconyl nitrate and yttrium nitrate hexahydrate; preparing a battery electrolyte based on barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate and ytterbium nitrate hexahydrate; preparing a battery positive electrode based on aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder and molybdenum powder; a battery is prepared based on a battery cathode, a battery cathode, and a battery electrolyte.

Description

Technical Field

[0001] The present invention relates to the field of computer technology, and particularly to a method for preparing a battery and a battery. Background Art

[0002] Recently, due to the increasingly serious global environmental problems such as global warming caused by the increase in carbon emissions in the atmosphere, more stringent emission regulations have been implemented. Therefore, fuel cells have attracted people's attention as clean energy and power generation systems. Ceramic fuel cells are usually referred to as solid oxide fuel cells (SOFCs), which can use a variety of fuels, including hydrocarbons, nitrogen-hydrogen compounds, etc., and are called "fuel cells that eat coarse grains". Using a hybrid of fuel cells and gas turbines in a power generation system has been considered a practical alternative to gas turbine power plants and has the potential to become the next-generation energy source, especially for gas-powered urban buildings. Ceramic fuel cells rely on methane gas fuel. During the combustion process of reforming methane gas fuel, it is inevitable to produce greenhouse gas emissions such as carbon dioxide. Therefore, before these batteries are commercialized, it is necessary to replace the fuel source with environmentally friendly and carbon-free energy (such as hydrogen). At present, there are technical problems in the preparation method of these batteries, such as complex preparation steps and poor battery performance. Summary of the Invention

[0003] In view of this, the present invention provides a method for preparing a battery and a battery.

[0004] Specifically, the present invention is implemented through the following technical solutions:

[0005] According to the first aspect of the present invention, there is provided a method for preparing a battery, including: preparing a battery cathode based on barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate, and yttrium nitrate hexahydrate; preparing a battery electrolyte based on barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate; preparing a battery anode based on aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder; and preparing a battery based on the battery cathode, the battery cathode, and the battery electrolyte.

[0006] Greatly reduced the preparation steps of the battery, improved the preparation efficiency of the battery, and at the same time improved the energy density of the battery, thereby improving the performance of the battery.

[0007] According to the second aspect of the present invention, there is provided a battery prepared by using the method for preparing a battery in any possible implementation manner of the first aspect.

[0008] The technical solutions provided by the present invention at least bring the following beneficial effects:

[0009] Greatly reduced the preparation steps of the battery, improved the preparation efficiency of the battery, and at the same time improved the energy density of the battery, thereby improving the performance of the battery. Brief Description of the Drawings

[0010] The drawings herein are incorporated into and form a part of this specification, showing embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention.

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 One of the schematic flowcharts of a method for preparing a battery provided by an embodiment of the present invention;

[0013] Figure 2 Two of the schematic flowcharts of a method for preparing a battery provided by an embodiment of the present invention;

[0014] Figure 3 Three of the schematic flowcharts of a method for preparing a battery provided by an embodiment of the present invention;

[0015] Figure 4 Four of the schematic flowcharts of a method for preparing a battery provided by an embodiment of the present invention;

[0016] Figure 5 Five of the schematic flowcharts of a method for preparing a battery provided by an embodiment of the present invention;

[0017] Figure 6 Six of the schematic flowcharts of a method for preparing a battery provided by an embodiment of the present invention;

[0018] Figure 7 Seven of the schematic flowcharts of a method for preparing a battery provided by an embodiment of the present invention;

[0019] Figure 8 Eight of the schematic flowcharts of a method for preparing a battery provided by an embodiment of the present invention;

[0020] Figure 9 Nine of the schematic flowcharts of a method for preparing a battery provided by an embodiment of the present invention;

[0021] Figure 10 Ten of the schematic flowcharts of a method for preparing a battery provided by an embodiment of the present invention;

[0022] Figure 11 Eleven of the schematic flowcharts of a method for preparing a battery provided by an embodiment of the present invention;

[0023] Figure 12 One of the schematic diagrams of a battery provided by an embodiment of the present invention;

[0024] Figure 13 Another schematic diagram of a battery provided by an embodiment of the present invention;

[0025] Figure 14 Another schematic diagram of a battery provided by an embodiment of the present invention;

[0026] Figure 15 Another schematic diagram of a battery provided by an embodiment of the present invention;

[0027] Figure 16 Another schematic diagram of a battery provided by an embodiment of the present invention;

[0028] Figure 17 Another schematic diagram of a battery provided by an embodiment of the present invention; Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Refer to Figure 1 , an embodiment of the present invention provides a method for preparing a battery, and the method for preparing the battery may include the following steps:

[0031] S101. Prepare a battery cathode based on barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate and yttrium nitrate hexahydrate;

[0032] S102. Prepare a battery electrolyte based on barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate and ytterbium nitrate hexahydrate;

[0033] S103. Prepare a battery anode based on aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder and molybdenum powder;

[0034] S104. Prepare a battery based on the battery cathode, the battery cathode and the battery electrolyte.

[0035] In this embodiment, barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate and yttrium nitrate hexahydrate are prepared into a battery cathode, and among them, the battery cathode is the positive electrode of the battery.

[0036] Exemplarily, barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconium oxynitrate, and yttrium nitrate hexahydrate are prepared into a cathode material, and then the cathode material is prepared into a battery cathode.

[0037] Barium nitrate, zirconium oxynitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate are prepared into a battery electrolyte, wherein the battery electrolyte is the electrolyte of the battery.

[0038] Exemplarily, barium nitrate, zirconium oxynitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate are prepared into an electrolyte material, and then the electrolyte material is prepared into a battery electrolyte.

[0039] Aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder are prepared into a battery anode, wherein the battery anode is the anode of the battery.

[0040] Exemplarily, aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder are prepared into an anode material, and then the anode material is prepared into a battery anode.

[0041] The battery cathode, the battery cathode, and the battery electrolyte are prepared into a battery.

[0042] Exemplarily, the battery can be a fuel cell.

[0043] In the preparation method of the battery in this embodiment, by preparing barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconium oxynitrate, and yttrium nitrate hexahydrate into a battery cathode, preparing barium nitrate, zirconium oxynitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate into a battery electrolyte, preparing aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder into a battery anode, and then preparing the battery cathode, the battery cathode, and the battery electrolyte into a battery, the preparation steps of the battery are greatly reduced, the preparation efficiency of the battery is improved, and at the same time, the energy density of the battery is improved, thereby improving the performance of the battery.

[0044] See Figure 2 , the embodiment of the present invention provides a method for preparing a battery. Based on barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconium oxynitrate, and yttrium nitrate hexahydrate, a battery cathode is prepared, including:

[0045] S201. Mix barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconium oxynitrate, and yttrium nitrate hexahydrate to obtain a first mixed powder;

[0046] S202. Mix citric acid and ethylenediaminetetraacetic acid with ammonia water to obtain a first solution;

[0047] S203. Mix the first mixed powder and the first solution to obtain a first gel;

[0048] S204. Heat the first gel to the first temperature and maintain it for the first duration to obtain the first precursor material;

[0049] S205. Perform heat sintering treatment on the first precursor material to obtain the battery cathode.

[0050] In this embodiment, barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate, and yttrium nitrate hexahydrate are mixed to obtain the first mixed powder. Among them, the first mixed powder is a powder obtained by mixing barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate, and yttrium nitrate hexahydrate.

[0051] Exemplarily, add barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate, and yttrium nitrate hexahydrate into a beaker and stir and mix to obtain the first mixed powder.

[0052] Mix citric acid and ethylenediaminetetraacetic acid with ammonia water to obtain the first solution. Among them, the first solution is a solution obtained by mixing citric acid and ethylenediaminetetraacetic acid with ammonia water.

[0053] Exemplarily, add citric acid and ethylenediaminetetraacetic acid into a beaker and mix to obtain the first solution.

[0054] Mix the first mixed powder and the first solution to obtain the first gel. Among them, the first gel is a gel obtained by mixing the first mixed powder and the first solution;

[0055] Exemplarily, heat and stir the first mixed powder and the first solution until a stable and uniform gel is obtained to obtain the first gel.

[0056] Heat the first gel to the first temperature and maintain it for the first duration to obtain the first precursor material. Among them, the first temperature is the re-heating temperature of the first gel, the first duration is the heat preservation duration after the first gel is re-heated, and the first precursor material is the precursor material prepared from the first gel.

[0057] Exemplarily, place the first gel in an oven and heat it at 230 degrees Celsius for about 240 minutes to obtain a fluffy and uniform first precursor material.

[0058] Perform heat sintering treatment on the first precursor material to obtain the battery cathode.

[0059] Exemplarily, perform heat sintering treatment on the first precursor material to obtain a porous cathode material, and then prepare the battery cathode.

[0060] In the preparation method of the battery in this embodiment, barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate, and yttrium nitrate hexahydrate are mixed to obtain a first mixed powder. Citric acid and ethylenediaminetetraacetic acid are mixed with ammonia water to obtain a first solution. Then, the first mixed powder and the first solution are mixed to obtain a first gel. The first gel is heated to a first temperature and maintained for a first duration to obtain a first precursor material. The first precursor material is subjected to a heat sintering treatment to obtain a battery cathode, significantly reducing the preparation steps of the battery cathode and improving the preparation efficiency of the battery cathode.

[0061] The embodiment of the present invention provides a preparation method of a battery. The mass ratio of the mixture of barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate, and yttrium nitrate hexahydrate is (10.4 - 10.5) : (4.6 - 4.7) : (6.4 - 6.5) : (1.7 - 1.8) : (1.53 - 1.54);

[0062] The mass ratio of citric acid and ethylenediaminetetraacetic acid is (33.6 - 33.7) : (23.3 - 23.4);

[0063] The concentration of ammonia water is greater than 24% and less than 26%;

[0064] The first temperature is greater than 220 °C and less than 240 °C;

[0065] The first duration is greater than 3 hours and less than 5 hours.

[0066] Exemplarily, the mass ratio of the mixture of barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate, and yttrium nitrate hexahydrate is 10.4 : 4.6 : 6.4 : 1.7 : 1.53.

[0067] Exemplarily, the mass ratio of the mixture of barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate, and yttrium nitrate hexahydrate is 10.5 : 4.7 : 6.5 : 1.8 : 1.54.

[0068] Exemplarily, the mass ratio of the mixture of barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate, and yttrium nitrate hexahydrate is 10.45 : 4.66 : 6.46 : 1.72 : 1.532.

[0069] Exemplarily, the mass ratio of citric acid and ethylenediaminetetraacetic acid is 33.6 : 23.3.

[0070] Exemplarily, the mass ratio of citric acid and ethylenediaminetetraacetic acid is 33.7 : 23.4.

[0071] Exemplarily, the mass ratio of citric acid and ethylenediaminetetraacetic acid is 33.62 : 23.37.

[0072] Exemplarily, the first temperature may be 220 degrees Celsius.

[0073] Exemplarily, the first temperature may be 230 degrees Celsius.

[0074] Exemplarily, the first temperature may be 240 degrees Celsius.

[0075] Exemplarily, the first duration may be 3 hours.

[0076] Exemplarily, the first duration may be 4 hours.

[0077] Exemplarily, the first duration may be 5 hours.

[0078] See Figure 3 , an embodiment of the present invention provides a method for preparing a battery. The first precursor material is heated and sintered to obtain a battery cathode, including:

[0079] S301. Continuously heat the first precursor material so that the temperature of the first precursor material is equal to the second temperature;

[0080] S302. When the continuous duration of the first precursor material at the second temperature is equal to the second duration, cool the first precursor material based on the first cooling rate to obtain the battery cathode.

[0081] In this embodiment, the first precursor material is continuously heated so that the temperature of the first precursor material is equal to the second temperature, where the second temperature is the heating temperature of the first precursor material.

[0082] When the continuous duration of the first precursor material at the second temperature is equal to the second duration, cool the first precursor material based on the first cooling rate to obtain the battery cathode, where the first cooling rate is the cooling rate of the first precursor material.

[0083] The method for preparing a battery in this embodiment continuously heats the first precursor material so that the temperature of the first precursor material is equal to the second temperature. When the continuous duration of the first precursor material at the second temperature is equal to the second duration, cool the first precursor material based on the first cooling rate to obtain the battery cathode, greatly reducing the preparation steps of the battery cathode and improving the preparation efficiency of the battery cathode.

[0084] An embodiment of the present invention provides a method for preparing a battery, where the second temperature is greater than 990 degrees Celsius and less than 1010 degrees Celsius;

[0085] The second duration is greater than 5 hours and less than 7 hours;

[0086] The first cooling rate is greater than 2.5 degrees Celsius per minute and less than 3.5 degrees Celsius per minute.

[0087] Exemplarily, the second temperature can be 990 degrees Celsius.

[0088] Exemplarily, the second temperature can be 1000 degrees Celsius.

[0089] Exemplarily, the second temperature can be 1010 degrees Celsius.

[0090] Exemplarily, the second duration can be 5 hours.

[0091] Exemplarily, the second duration can be 6 hours.

[0092] Exemplarily, the second duration can be 7 hours.

[0093] Exemplarily, the first cooling rate can be 2.5 degrees Celsius per minute.

[0094] Exemplarily, the first cooling rate can be 3.5 degrees Celsius per minute.

[0095] Exemplarily, the first cooling rate can be 3 degrees Celsius per minute.

[0096] See Figure 4 , an embodiment of the present invention provides a method for preparing a battery. Based on barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate, a battery electrolyte is prepared, including:

[0097] S401. Dissolve barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate in deionized water to obtain a second solution;

[0098] S402. Mix citric acid and ethylenediaminetetraacetic acid with ammonia water to obtain a first solution;

[0099] S403. Mix the second solution and the first solution to obtain a second gel;

[0100] S404. Heat the second gel to a third temperature and maintain it for a third duration to obtain a second precursor material;

[0101] S405. Perform a heat sintering treatment on the second precursor material to obtain a battery electrolyte.

[0102] In this embodiment, barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate are dissolved in deionized water to obtain a second solution. Among them, the second solution is a solution prepared from barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate.

[0103] Exemplarily, barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate are dissolved in deionized water, and stirred evenly to obtain a second solution.

[0104] Citric acid and ethylenediaminetetraacetic acid are mixed with ammonia water to obtain a first solution, wherein the first solution is a solution prepared from citric acid and ethylenediaminetetraacetic acid.

[0105] Exemplarily, citric acid and ethylenediaminetetraacetic acid are mixed with ammonia water and stirred evenly to obtain a first solution.

[0106] The second solution and the first solution are mixed to obtain a second gel, wherein the second gel is a gel obtained by mixing the second solution and the first solution.

[0107] Exemplarily, the second solution and the first solution are mixed and heated with stirring until a uniform second gel is formed.

[0108] The second gel is heated to a third temperature and maintained for a third duration to obtain a second precursor material, wherein the second precursor material is a precursor material prepared from the second gel.

[0109] Exemplarily, the second gel is placed in an oven and heated at 230 °C for about 240 minutes to obtain a fluffy and uniform second precursor material.

[0110] The second precursor material is subjected to a heat sintering treatment to obtain a battery electrolyte.

[0111] In the preparation method of the battery in this embodiment, barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate are dissolved in deionized water to obtain a second solution, citric acid and ethylenediaminetetraacetic acid are mixed with ammonia water to obtain a first solution, the second solution and the first solution are mixed to obtain a second gel, then the second gel is heated to a third temperature and maintained for a third duration to obtain a second precursor material, and the second precursor material is subjected to a heat sintering treatment to obtain a battery electrolyte, which greatly reduces the preparation steps of the battery electrolyte and improves the preparation efficiency of the battery electrolyte.

[0112] The embodiment of the present invention provides a method for preparing a battery, and the molar ratio of barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate is (0.3 - 0.5):(0.03 - 0.05):(0.27 - 0.29):(0.03 - 0.05):(0.03 - 0.05);

[0113] The molar ratio of citric acid and ethylenediaminetetraacetic acid is (0.3 - 0.5):(0.7 - 0.9);

[0114] The volume of ammonia water is greater than 70 mL and less than 90 mL;

[0115] The third temperature is greater than 220 degrees Celsius and less than 240 degrees Celsius;

[0116] The third duration is greater than 3 hours and less than 5 hours.

[0117] Exemplarily, the molar ratio of barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate is 0.3:0.03:0.27:0.03:0.03.

[0118] Exemplarily, the molar ratio of barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate is 0.5:0.05:0.29:0.05:0.05.

[0119] Exemplarily, the molar ratio of barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate is 0.4:0.04:0.28:0.04:0.04.

[0120] Exemplarily, the molar ratio of citric acid and ethylenediaminetetraacetic acid is 0.3:0.7.

[0121] Exemplarily, the molar ratio of citric acid and ethylenediaminetetraacetic acid is 0.5:0.9.

[0122] Exemplarily, the molar ratio of citric acid and ethylenediaminetetraacetic acid is 0.4:0.8.

[0123] Exemplarily, the volume of ammonia water can be 70 milliliters.

[0124] Exemplarily, the volume of ammonia water can be 90 milliliters.

[0125] Exemplarily, the volume of ammonia water can be 80 milliliters.

[0126] Exemplarily, the third temperature can be 220 degrees Celsius.

[0127] Exemplarily, the third temperature can be 230 degrees Celsius.

[0128] Exemplarily, the third temperature can be 240 degrees Celsius.

[0129] Exemplarily, the third duration can be 3 hours.

[0130] Exemplarily, the third duration can be 4 hours.

[0131] Exemplarily, the third duration can be 5 hours.

[0132] See Figure 5 , the embodiment of the present invention provides a method for preparing a battery. The second precursor material is heated and sintered to obtain a battery electrolyte, including:

[0133] S501. Continuously heat-treat the second precursor material so that the temperature of the second precursor material is equal to the fourth temperature;

[0134] S502. When the duration for which the second precursor material remains at the fourth temperature is equal to the fourth duration, cool the second precursor material based on the second cooling rate to obtain a battery electrolyte.

[0135] In this embodiment, the second precursor material is continuously heat-treated so that the temperature of the second precursor material is equal to the fourth temperature, where the fourth temperature is the heating temperature of the second precursor material.

[0136] When the duration for which the second precursor material remains at the fourth temperature is equal to the fourth duration, cool the second precursor material based on the second cooling rate to obtain a battery electrolyte, where the second cooling rate is the cooling rate of the second precursor material and the fourth duration is a preset duration.

[0137] The method for preparing a battery in this embodiment continuously heat-treats the second precursor material so that the temperature of the second precursor material is equal to the fourth temperature. When the duration for which the second precursor material remains at the fourth temperature is equal to the fourth duration, the second precursor material is cooled based on the second cooling rate to obtain a battery electrolyte, greatly reducing the preparation steps of the battery electrolyte and improving the preparation efficiency of the battery electrolyte.

[0138] An embodiment of the present invention provides a method for preparing a battery, where the fourth temperature is greater than 990 °C and less than 1010 °C;

[0139] The fourth duration is greater than 5 hours and less than 7 hours;

[0140] The second cooling rate is greater than 2.5 °C / minute and less than 3.5 °C / minute.

[0141] Exemplarily, the fourth temperature can be 990 °C.

[0142] Exemplarily, the fourth temperature can be 1000 °C.

[0143] Exemplarily, the fourth temperature can be 1010 °C.

[0144] Exemplarily, the fourth duration can be 5 hours.

[0145] Exemplarily, the fourth duration can be 6 hours.

[0146] Exemplarily, the fourth duration can be 7 hours.

[0147] Exemplarily, the second cooling rate can be 2.5 degrees Celsius per minute.

[0148] Exemplarily, the second cooling rate can be 3.5 degrees Celsius per minute.

[0149] Exemplarily, the second cooling rate can be 3 degrees Celsius per minute.

[0150] See Figure 6 , an embodiment of the present invention provides a method for preparing a battery. Based on aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder, a battery positive electrode is prepared, including:

[0151] S601. Mix aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder to obtain a second mixed powder;

[0152] S602. Mix the second mixed powder and an alkali solution to obtain an alloy powder;

[0153] S603. Prepare a battery positive electrode based on the alloy powder.

[0154] In this embodiment, aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder are mixed to obtain a second mixed powder, wherein the second mixed powder is a powder obtained by mixing aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder.

[0155] Exemplarily, aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder are uniformly mixed to obtain a second mixed powder.

[0156] Mix the second mixed powder and an alkali solution to obtain an alloy powder, wherein the alloy powder is a powder obtained by mixing the second mixed powder and the alkali solution.

[0157] Exemplarily, the alkali solution can be a solution containing sodium hydroxide.

[0158] Exemplarily, the alloy powder can be a high-entropy alloy powder.

[0159] Exemplarily, by mixing and reacting the second mixed powder and the alkali solution, an alloy powder can be obtained.

[0160] Prepare the alloy powder into a battery positive electrode.

[0161] The method for preparing a battery in this embodiment mixes aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder to obtain a second mixed powder, mixes the second mixed powder and an alkali solution to obtain an alloy powder, and then prepares the alloy powder into a battery positive electrode, greatly reducing the preparation steps of the battery positive electrode and improving the preparation efficiency of the battery positive electrode.

[0162] See Figure 7, an embodiment of the present invention provides a method for preparing a battery. Based on aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder and molybdenum powder, a battery positive electrode is prepared, including:

[0163] S701. Continuously ball-mill the aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder and molybdenum powder by a ball mill for a third duration to obtain a second mixed powder;

[0164] S702. Mix the second mixed powder with an alkali solution to obtain an alloy powder;

[0165] S703. Based on the alloy powder, prepare a battery positive electrode.

[0166] In this embodiment, the aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder and molybdenum powder are continuously ball-milled by a ball mill for a third duration to obtain a second mixed powder. Among them, the third duration is the ball-milling duration of the ball mill, and the third duration is greater than 9 hours and less than 11 hours.

[0167] Exemplarily, the third duration can be 9 hours.

[0168] Exemplarily, the third duration can be 10 hours.

[0169] Exemplarily, the third duration can be 11 hours.

[0170] The method for preparing a battery in this embodiment continuously ball-mills the aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder and molybdenum powder by a ball mill for a third duration to obtain a second mixed powder, which improves the preparation speed of the second mixed powder and thus improves the preparation efficiency of the second mixed powder.

[0171] See Figure 8 , an embodiment of the present invention provides a method for preparing a battery. Based on the alloy powder, a battery positive electrode is prepared, including:

[0172] S801. Mix the alloy powder with a pore-forming agent, a dispersant and a solvent to obtain an alloy mixture;

[0173] S802. Add a binder and a plasticizer to the alloy mixture to obtain an alloy slurry;

[0174] S803. Based on the alloy slurry, prepare a battery positive electrode.

[0175] In this embodiment, the alloy powder is mixed with a pore-forming agent, a dispersant and a solvent to obtain an alloy mixture. Among them, the pore-forming agent is a reagent for forming pores, the dispersant is a reagent for dispersion, and the alloy mixture is a mixture containing metals.

[0176] Exemplarily, the alloy mixture can be a high-entropy alloy mixture.

[0177] A binder and a plasticizer are added to the alloy mixture to obtain an alloy slurry. Here, the binder is a reagent for bonding, the plasticizer is a reagent for plasticizing, and the alloy slurry is a slurry containing metal.

[0178] Exemplarily, the alloy slurry can be a high-entropy alloy slurry.

[0179] The alloy slurry is prepared into a battery positive electrode.

[0180] In the preparation method of the battery in this embodiment, an alloy powder is mixed with a pore-forming agent, a dispersant, and a solvent to obtain an alloy mixture. A binder and a plasticizer are added to the alloy mixture to obtain an alloy slurry, and then the alloy slurry is prepared into a battery positive electrode, which improves the preparation speed of the battery positive electrode and thus improves the preparation efficiency of the battery positive electrode.

[0181] The embodiment of the present invention provides a preparation method of a battery. The pore-forming agent includes graphite and starch;

[0182] The dispersant includes propylene glycol methyl ether acetate and acrylic resin;

[0183] The solvent includes ethanol and ethyl acetate.

[0184] In this embodiment, the pore-forming agent includes graphite and starch, the dispersant includes propylene glycol methyl ether acetate and acrylic resin, and the solvent includes ethanol and ethyl acetate.

[0185] The embodiment of the present invention provides a preparation method of a battery. The mass ratio of the alloy powder, graphite, starch, propylene glycol methyl ether acetate, acrylic resin, ethanol, and ethyl acetate is (58 - 62):(1 - 3):(1 - 3):(2 - 4):(2 - 4):(19 - 21):(24 - 26).

[0186] Exemplarily, the mass ratio of the alloy powder, graphite, starch, propylene glycol methyl ether acetate, acrylic resin, ethanol, and ethyl acetate is 58:1:1:2:2:19:24.

[0187] Exemplarily, the mass ratio of the alloy powder, graphite, starch, propylene glycol methyl ether acetate, acrylic resin, ethanol, and ethyl acetate is 60:2:2:3:3:20:25.

[0188] Exemplarily, the mass ratio of the alloy powder, graphite, starch, propylene glycol methyl ether acetate, acrylic resin, ethanol, and ethyl acetate is 62:3:3:4:4:21:26.

[0189] The embodiment of the present invention provides a preparation method of a battery. The binder includes poly(methyl acrylate);

[0190] The plasticizer includes polyethylene glycol;

[0191] The mass ratio of methyl polyacrylate to polyethylene glycol is (4 - 6):(3 - 5).

[0192] In this embodiment, the binder includes methyl polyacrylate and the plasticizer includes polyethylene glycol.

[0193] Exemplarily, the mass ratio of methyl polyacrylate to polyethylene glycol is 4:3.

[0194] Exemplarily, the mass ratio of methyl polyacrylate to polyethylene glycol is 5:4.

[0195] Exemplarily, the mass ratio of methyl polyacrylate to polyethylene glycol is 6:5.

[0196] See Figure 9 , the embodiment of the present invention provides a method for preparing a battery. Based on an alloy paste, a battery positive electrode is prepared, including:

[0197] S901. Cast the alloy paste through a casting machine to obtain a green body of an alloy layer;

[0198] S902. Perform a lamination molding process on the green body of the alloy layer and a positive electrode substrate through an isostatic press to obtain electrode material;

[0199] S903. Heat the electrode material to a fifth temperature and then perform a sintering process to obtain a battery positive electrode.

[0200] In this embodiment, the alloy paste is cast through a casting machine to obtain a green body of an alloy layer, where the green body of the alloy layer is a green body of an alloy material.

[0201] The lamination molding process is performed on the green body of the alloy layer and a positive electrode substrate through an isostatic press to obtain electrode material, where the positive electrode substrate is an electrode substrate.

[0202] Exemplarily, the positive electrode substrate can be a green body of a conventional battery.

[0203] The electrode material is heated to a fifth temperature and then the sintering process is performed to obtain a battery positive electrode, where the fifth temperature is the heating temperature of the electrode material.

[0204] The method for preparing a battery in this embodiment casts the alloy paste through a casting machine to obtain a green body of an alloy layer, then performs a lamination molding process on the green body of the alloy layer and a positive electrode substrate through an isostatic press to obtain electrode material, heats the electrode material to a fifth temperature and then performs a sintering process to obtain a battery positive electrode, which simplifies the preparation steps of the battery positive electrode and thus improves the preparation efficiency of the battery positive electrode.

[0205] The embodiment of the present invention provides a method for preparing a battery. The height of the casting knife of the casting machine is greater than 290 microns and less than 310 microns;

[0206] The heating base temperature of the casting machine is greater than 54 °C and less than 56 °C;

[0207] The hot air blowing temperature of the casting machine is greater than 59 °C and less than 61 °C;

[0208] The casting film belt speed of the casting machine is greater than 0.1 cm / s and less than 0.3 cm / s;

[0209] The temperature of the isostatic press is greater than 69 °C and less than 71 °C;

[0210] The pressure of the isostatic press is greater than 47 MPa and less than 49 MPa;

[0211] The fifth temperature is greater than 1449 °C and less than 1451 °C.

[0212] Exemplarily, the heating base temperature of the casting machine can be 54 °C.

[0213] Exemplarily, the heating base temperature of the casting machine can be 55 °C.

[0214] Exemplarily, the heating base temperature of the casting machine can be 56 °C.

[0215] Exemplarily, the hot air blowing temperature of the casting machine can be 59 °C.

[0216] Exemplarily, the hot air blowing temperature of the casting machine can be 60 °C.

[0217] Exemplarily, the hot air blowing temperature of the casting machine can be 61 °C.

[0218] Exemplarily, the casting film belt speed of the casting machine can be 0.1 cm / s.

[0219] Exemplarily, the casting film belt speed of the casting machine can be 0.2 cm / s.

[0220] Exemplarily, the casting film belt speed of the casting machine can be 0.3 cm / s.

[0221] Exemplarily, the temperature of the isostatic press can be 69 °C.

[0222] Exemplarily, the temperature of the isostatic press can be 70 °C.

[0223] Exemplarily, the temperature of the isostatic press can be 71 °C.

[0224] Exemplarily, the pressure of the isostatic press can be 47 MPa.

[0225] Exemplarily, the pressure of the isostatic press can be 48 MPa.

[0226] Exemplarily, the pressure of the isostatic press can be 49 MPa.

[0227] Exemplarily, the fifth temperature can be 1449 °C.

[0228] Exemplarily, the fifth temperature can be 1450 °C.

[0229] Exemplarily, the fifth temperature can be 1451 °C.

[0230] See Figure 10 , an embodiment of the present invention provides a method for preparing a battery. Before casting the alloy slurry by a casting machine to obtain a green body of the alloy layer, it further includes:

[0231] S1001. Filter the alloy slurry through a filter screen to obtain the filtered alloy slurry.

[0232] S1002. Cast the alloy slurry by a casting machine to obtain a green body of the alloy layer;

[0233] In this embodiment, the alloy slurry is filtered through a filter screen to obtain the filtered alloy slurry.

[0234] Exemplarily, the alloy slurry is filtered through a 250-mesh filter screen.

[0235] See Figure 11 , an embodiment of the present invention provides a method for preparing a battery, including:

[0236] S1101. Prepare a battery cathode based on barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate, and yttrium nitrate hexahydrate;

[0237] S1102. Prepare a battery electrolyte based on barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate;

[0238] S1103. Prepare a battery anode based on aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder;

[0239] S1104. Assemble the battery cathode, battery cathode, and battery electrolyte to obtain a battery.

[0240] In this embodiment, the battery cathode, battery cathode, and battery electrolyte are assembled to obtain a battery.

[0241] Exemplarily, the battery can be a button battery with a high-entropy alloy layer added.

[0242] An embodiment of the present invention provides a battery, which is prepared by using the method for preparing a battery in any of the above embodiments.

[0243] Exemplarily, as Figure 12 shown, during the first ball milling process, powder, solvent, pore former, and dispersant were added and continued for 24 hours. During the second ball milling process, binder and plasticizer were added and continued for 24 hours. Then, processes such as filtration, vacuum degassing, casting, cutting and laminating the film, warm isostatic pressing, debinding, sintering, and wet spraying of the cathode were carried out.

[0244] Exemplarily, as Figure 13 shown, during the first ball milling and mixing process, powder, solvent, and dispersant were added, and during the second ball milling and mixing process, binder and plasticizer were added. Then, processes such as filtration, drying, casting, degassing, green body cutting, debinding, and sintering were carried out.

[0245] Exemplarily, the cross-sectional electron microscope images of the battery are as Figure 14 , Figure 15 , Figure 16 and Figure 17 shown.

[0246] Example 1

[0247] 60 g of high-entropy alloy powder, pore former (2 g of graphite + 2 g of starch), dispersant (3 g of propylene glycol methyl ether acetate, acrylic resin), and solvent (20 g of ethanol + 25 g of ethyl acetate) were sequentially added into the ball mill jar and ball milled for 24 h. After ball milling, binder (5 g of polymethyl acrylate) and plasticizer (4 g of polyethylene glycol) were added to obtain high-entropy alloy slurry. The slurry was filtered through a 250-mesh filter screen, vacuum degassed, and then cast using a casting machine. The height of the casting knife was 300 μm, the heating substrate temperature in the casting machine was 55 °C, the hot air blowing temperature was 60 °C, and the casting film belt rate was 0.2 cm / S. The green body of the high-entropy alloy layer obtained by casting and the green body of the conventional battery were effectively compounded together by the method of warm isostatic pressing after lamination.

[0248] By testing, the energy density of the battery was 500 mw / cm 2 .

[0249] Example 2

[0250] Add 59 g of high-entropy alloy powder, pore-forming agents (1.9 g of graphite + 1.9 g of starch), dispersants (propylene glycol methyl ether acetate, 3.1 g of acrylic resin), and solvents (20 g of ethanol + 25 g of ethyl acetate) into the ball mill tank in sequence and ball mill for 24 h. After ball milling, add a binder (5 g of polymethyl acrylate) and a plasticizer (4 g of polyethylene glycol) to obtain a high-entropy alloy slurry. Filter the slurry through a 250-mesh filter screen, perform vacuum degassing, and then use a casting machine for casting. The height of the casting knife is 300 μm, the heating substrate temperature in the casting machine is 55 °C, the hot air blowing temperature is 60 °C, and the casting film belt speed is 0.2 cm / s. Effectively composite the as-cast high-entropy alloy layer green body and the conventional battery green body together by the method of warm isostatic pressing after laminating.

[0251] The energy density of the battery is tested to be 600 mw / cm 2 。

[0252] Example 3

[0253] Add 61 g of high-entropy alloy powder, pore-forming agents (2.1 g of graphite + 2.1 g of starch), dispersants (propylene glycol methyl ether acetate, 3.1 g of acrylic resin), and solvents (20 g of ethanol + 25 g of ethyl acetate) into the ball mill tank in sequence and ball mill for 24 h. After ball milling, add a binder (5 g of polymethyl acrylate) and a plasticizer (4 g of polyethylene glycol) to obtain a high-entropy alloy slurry. Filter the slurry through a 250-mesh filter screen, perform vacuum degassing, and then use a casting machine for casting. The height of the casting knife is 300 μm, the heating substrate temperature in the casting machine is 55 °C, the hot air blowing temperature is 60 °C, and the casting film belt speed is 0.2 cm / s. Effectively composite the as-cast high-entropy alloy layer green body and the conventional battery green body together by the method of warm isostatic pressing after laminating.

[0254] The energy density of the battery is tested to be 1190 mw / cm 2 。

[0255] Although this specification contains many specific implementation details, these should not be construed as limiting the scope of any invention or the scope of what is claimed, but are mainly used to describe the features of specific embodiments of a particular invention. Certain features described in multiple embodiments in this specification can also be implemented in combination in a single embodiment. On the other hand, various features described in a single embodiment can also be implemented separately in multiple embodiments or in any suitable sub-combination. In addition, although features may function in certain combinations as above and are even initially claimed as such, one or more features from the claimed combination can in some cases be removed from the combination, and the claimed combination can be directed to a sub-combination or a variant of the sub-combination.

[0256] Similarly, although operations are depicted in a particular order in the accompanying drawings, this should not be understood as requiring that these operations be performed in the particular order shown or performed sequentially, or requiring that all illustrated operations be performed to achieve the desired results. In some cases, multitasking and parallel processing may be advantageous. In addition, the separation of various system modules and components in the above-described embodiments should not be understood as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product, or packaged into multiple software products.

[0257] Thus, specific embodiments of the subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the particular order or sequential order shown to achieve the desired results. In some implementations, multitasking and parallel processing may be advantageous.

[0258] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0259] The above is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A method for preparing a battery, characterized in that, The preparation method of the battery includes: Preparing a battery cathode based on barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate, and yttrium nitrate hexahydrate; Preparing a battery electrolyte based on barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate; Preparing a battery anode based on aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder; Preparing a battery based on the battery cathode, the battery cathode, and the battery electrolyte.

2. The method for preparing a battery according to claim 1, wherein The step of preparing a battery cathode based on barium nitrate, cobalt nitrate hexahydrate, iron nitrate nonahydrate, zirconyl nitrate, and yttrium nitrate hexahydrate includes: Mixing the barium nitrate, the cobalt nitrate hexahydrate, the iron nitrate nonahydrate, the zirconyl nitrate, and the yttrium nitrate hexahydrate to obtain a first mixed powder; Mixing citric acid and ethylenediaminetetraacetic acid with ammonia water to obtain a first solution; Mixing the first mixed powder and the first solution to obtain a first gel; Heating the first gel to a first temperature and maintaining it for a first duration to obtain a first precursor material; Performing a heat sintering treatment on the first precursor material to obtain the battery cathode.

3. The preparation method of the battery according to claim 2, wherein The mass ratio of the mixture of the barium nitrate, the cobalt nitrate hexahydrate, the iron nitrate nonahydrate, the zirconyl nitrate, and the yttrium nitrate hexahydrate is (10.4 - 10.5):(4.6 - 4.7):(6.4 - 6.5):(1.7 - 1.8):(1.53 - 1.54); The mass ratio of the citric acid and the ethylenediaminetetraacetic acid is (33.6 - 33.7):(23.3 - 23.4); The concentration of the ammonia water is greater than 24% and less than 26%; The first temperature is greater than 220 °C and less than 240 °C; The first duration is greater than 3 hours and less than 5 hours.

4. The method for preparing a battery according to claim 2, characterized in that, The step of performing a heat sintering treatment on the first precursor material to obtain the battery cathode includes: Performing a continuous heating treatment on the first precursor material to make the temperature of the first precursor material equal to a second temperature; When the continuous duration of the first precursor material at the second temperature is equal to a second duration, performing a cooling treatment on the first precursor material based on a first cooling rate to obtain the battery cathode.

5. The preparation method of the battery according to claim 4, wherein The second temperature is greater than 990 °C and less than 1010 °C; The second duration is greater than 5 hours and less than 7 hours; The first cooling rate is greater than 2.5 °C / minute and less than 3.5 °C / minute.

6. The preparation method of the battery according to claim 1, wherein The step of preparing a battery electrolyte based on barium nitrate, zirconyl nitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate includes: Dissolving the barium nitrate, the zirconyl nitrate, the cerium nitrate hexahydrate, the yttrium nitrate hexahydrate, and the ytterbium nitrate hexahydrate in deionized water to obtain a second solution; Mixing citric acid and ethylenediaminetetraacetic acid with ammonia water to obtain a first solution; Mixing the second solution and the first solution to obtain a second gel; Heat the second gel to a third temperature and maintain it for a third duration to obtain a second precursor material; Perform a heat sintering treatment on the second precursor material to obtain a battery electrolyte.

7. The method for preparing a battery according to claim 6, wherein The molar ratio of the barium nitrate, zirconium oxynitrate, cerium nitrate hexahydrate, yttrium nitrate hexahydrate, and ytterbium nitrate hexahydrate is (0.3 - 0.5):(0.03 - 0.05):(0.27 - 0.29):(0.03 - 0.05):(0.03 - 0.05); The molar ratio of the citric acid and ethylenediaminetetraacetic acid is (0.3 - 0.5):(0.7 - 0.9); The volume of the ammonia water is greater than 70 milliliters and less than 90 milliliters; The third temperature is greater than 220 degrees Celsius and less than 240 degrees Celsius; The third duration is greater than 3 hours and less than 5 hours.

8. The method for preparing a battery according to claim 6, wherein, The performing a heat sintering treatment on the second precursor material to obtain a battery electrolyte includes: Perform a continuous heating treatment on the second precursor material to make the temperature of the second precursor material equal to a fourth temperature; When the continuous duration of the second precursor material at the fourth temperature is equal to a fourth duration, perform a cooling treatment on the second precursor material based on a second cooling rate to obtain the battery electrolyte.

9. The method for preparing a battery according to claim 8, wherein The fourth temperature is greater than 990 degrees Celsius and less than 1010 degrees Celsius; The fourth duration is greater than 5 hours and less than 7 hours; The second cooling rate is greater than 2.5 degrees Celsius per minute and less than 3.5 degrees Celsius per minute.

10. The method for preparing a battery according to claim 1, wherein, The preparing a battery positive electrode based on aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder includes: Mix the aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder to obtain a second mixed powder; Mix the second mixed powder and an alkali solution to obtain an alloy powder; Prepare the battery positive electrode based on the alloy powder.

11. The method for preparing a battery according to claim 10, characterized in that, The mixing the aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder to obtain a second mixed powder includes: Continuously ball mill the aluminum powder, iron powder, cobalt powder, nickel powder, chromium powder, and molybdenum powder by a ball mill for a third duration to obtain the second mixed powder; The third duration is greater than 9 hours and less than 11 hours.

12. The method for preparing a battery according to claim 10, wherein The preparing the battery positive electrode based on the alloy powder includes: Mix the alloy powder with a pore former, a dispersant, and a solvent to obtain an alloy mixture; Add a binder and a plasticizer to the alloy mixture to obtain an alloy slurry; Prepare the battery positive electrode based on the alloy slurry.

13. The method for preparing a battery according to claim 12, wherein The pore former includes graphite and starch; The dispersant includes propylene glycol methyl ether acetate and acrylic resin; The solvent includes ethanol and ethyl acetate.

14. The method for preparing a battery according to claim 13, wherein The mass ratio of the alloy powder, the graphite, the starch, the propylene glycol methyl ether acetate, the acrylic resin, the ethanol and the ethyl acetate is (58 - 62):(1 - 3):(1 - 3):(2 - 4):(2 - 4):(19 - 21):(24 - 26).

15. The preparation method of the battery according to claim 12, wherein, the binder includes polymethyl acrylate; the plasticizer includes polyethylene glycol; the mass ratio of the polymethyl acrylate and the polyethylene glycol is (4 - 6):(3 - 5).

16. The method for preparing a battery according to claim 12, wherein Based on the alloy slurry, preparing the battery positive electrode includes: casting the alloy slurry by a casting machine to obtain a green body of the alloy layer; performing a lamination molding treatment on the green body of the alloy layer and the positive electrode substrate by an isostatic press to obtain an electrode material; heating the electrode material to a fifth temperature and then performing a sintering treatment to obtain the battery positive electrode.

17. The preparation method of the battery according to claim 16, wherein, the height of the casting knife of the casting machine is greater than 290 microns and less than 310 microns; the temperature of the heating base of the casting machine is greater than 54 °C and less than 56 °C; the temperature of the hot air blowing of the casting machine is greater than 59 °C and less than 61 °C; the rate of the casting film belt of the casting machine is greater than 0.1 cm / s and less than 0.3 cm / s; the temperature of the isostatic press is greater than 69 °C and less than 71 °C; the pressure of the isostatic press is greater than 47 MPa and less than 49 MPa; the fifth temperature is greater than 1449 °C and less than 1451 °C.

18. The method for preparing a battery according to claim 16, wherein Before casting the alloy slurry by the casting machine to obtain a green body of the alloy layer, it further includes: filtering the alloy slurry through a filter screen to obtain the filtered alloy slurry.

19. The method for preparing a battery according to any one of claims 1 to 18, characterized in that, Based on the battery cathode, the battery cathode and the battery electrolyte, preparing the battery includes: assembling the battery cathode, the battery cathode and the battery electrolyte to obtain the battery.

20. A battery, characterized in that, Prepared by using the preparation method of the battery according to any one of claims 1 to 19.

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