All-solid-state battery using charcoal ash powder as material and preparation method of all-solid-state battery

Abstract

The invention discloses an all-solid-state battery using charcoal ash powder as a material, the all-solid-state battery comprises an all-solid-state battery, the all-solid-state battery comprises a battery cell, the battery cell comprises a positive electrode plate, a negative electrode plate and a solid electrolyte, the surface of the positive electrode plate and the surface of the negative electrode plate are coated with the charcoal ash powder, and the solid electrolyte is made of the charcoal ash powder. The invention has the advantages of no short circuit, no collision, no puncture, no combustion, no explosion, higher and better safety, longer cycle life, high energy density, small volume, light weight, maintenance of 92.8% charging and discharging at a high working environment temperature of 150 DEG C, maintenance of 89% charging and discharging at a low working environment temperature of-60 DEG C, fast charging, suitableness for 2c-6c, and high reliability. And the charging time is greatly shortened. The voltage is high and is 3.7 V, the charging saturation is 4.25-4.5 V, the self-attenuation rate of the battery is low, the self-attenuation rate of the capacity of the battery is 5% after the battery is fully charged and placed for 12 months, the service life of the battery is ended, the treatment is pollution-free and environment-friendly, and the battery can be recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to an all-solid battery using charcoal ash powder as a material and a preparation method thereof. Background Art

[0002] Current solid-state batteries have the following defects when in use: Safety hazards: It is easy to cause combustion and explosion due to short circuit, puncture, and collision; the risk of thermal runaway is high (the main causes include manufacturing defects, lithium dendrite growth, mechanical damage, overcharge and overdischarge, and high temperature environment); high temperature (>60℃) causes material decomposition, and low temperature (<-10℃) causes capacity degradation of more than 50%.

[0003] Performance bottlenecks: low energy density, short cycle life (generally <1500 times); large size, heavy weight, complex manufacturing process; requires a matching liquid cooling system, and high maintenance costs.

[0004] Environmental issues: The disposal of scrapped batteries pollutes the environment; and the company relies on scarce metals such as cobalt and nickel (for example, cobalt relies on imports and is expensive).

[0005] Electrolyte material defects: sulfides have poor chemical stability and are prone to produce toxic gases; the industrialization process of halides is slow; and the electrochemical window of polymer electrolytes is narrow.

[0006] Negative electrode challenge: Lithium metal negative electrode has dendrite problem and cycle life is limited (<300 times). Summary of the Invention

[0007] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide an all-solid-state battery using charcoal ash powder as material and a preparation method thereof, so as to solve the problems mentioned in the background technology.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides an all-solid-state battery using charcoal ash powder as material, including an all-solid-state battery, the all-solid-state battery including a battery cell, the battery cell including a positive electrode sheet, a negative electrode sheet and a solid electrolyte, the surfaces of the positive electrode sheet and the negative electrode sheet are coated with charcoal ash powder, and the material of the solid electrolyte is charcoal ash powder.

[0009] Preferably, the charcoal ash powder is one or more of woody plants, bamboo plants and Asteraceae herbaceous plants, which are roughly processed and crushed, and then crushed again into micron-sized powder for standby use; the charcoal ash powder includes one or more of bamboo, oak, oak, oak, poplar, paper mulberry, camphor, elm, broomrape, sunflower, platycodon, and coconut shell.

[0010] A method for preparing an all-solid-state battery using charcoal ash powder as a material, characterized by comprising the following steps: (1) Preparation of charcoal ash powder: one or more of bamboo, oak, oak, oak, poplar, paper mulberry, camphor, elm, vitex, sunflower, platycodon, and coconut shells are carbonized, crushed by rough processing, and then crushed again into micron-sized powder for use; (2) Coating of positive and negative electrode sheets of solid batteries: pour the raw materials slowly into a stirring container, add distilled water, binder and organic solvent to a solid concentration of 30-50%, stir and knead for 2-4 hours until the materials are evenly kneaded; apply on the surface of the positive and negative electrode sheets, place in a vacuum oven at a temperature of 60-100 ° C to dry for 2-6 hours, and then process into electrode sheets according to the capacity of the battery cell, assemble the positive and negative electrode sheets in order of positive and negative electrodes, and make battery cells by vacuum packaging with aluminum plastic film. After chemical division and capacity division, assemble into solid battery packs for use.

[0011] Preferably, the organic solvent is any one of the following or a combination thereof: water, N,N-dimethylamide, N-methylpyrrolidone.

[0012] The beneficial effects of the present invention are as follows: the coatings and solid electrolytes of the positive and negative electrode sheets of the all-solid-state battery provided by the present invention are all made of charcoal ash powder as raw materials. The battery is safer and more reliable during charging and discharging, and does not short-circuit, collide, puncture, burn, or explode. It has a longer cycle life, with charge and discharge times of more than 15,000 times, a high energy density of 460wh-700wh / kg, a small size and light weight, and maintains 92.8% charge and discharge power at a high temperature of 150°C in an operating environment, and maintains 89% charge and discharge power at a low temperature of -60°C in an operating environment. It charges quickly and is suitable for 2C-6C, greatly shortening the charging time. The voltage is high at 3.7V, the charge is saturated at 4.25V-4.5V, the battery's own attenuation rate is low, and the capacity self-attenuation rate of the battery after being fully charged and left for 12 months is 5% at the end of its life. The battery can be processed without pollution and is environmentally friendly and can be recycled. Raw materials can be planted in mountains, hills, roadsides, stream banks, sparse forests, shrublands, and along highways worldwide, providing lifelong benefits. Harvested annually, they grow year after year, creating a rich, inexhaustible resource. This can significantly reduce global oil and coal use, making it an ideal material for all-solid-state batteries. This fundamentally addresses the drawbacks of battery technology, while also uncovering new avenues for energy materials and contributing to the sustainable development of human society. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the all-solid-state battery structure provided by the present invention.

[0015] Figure 2 This is a view of 386 test data of the all-solid-state battery provided by the present invention.

[0016] Figure 3 This is a view of 1012 detection data of the all-solid-state battery provided by the present invention.

[0017] Explanation of the accompanying symbols: 1-all-solid-state battery; 2-charcoal ash powder; 3-solid electrolyte; 4-battery cell. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example: like Figure 1 As shown, The present invention provides an all-solid-state battery using charcoal ash powder as a material, comprising an all-solid-state battery 1, comprising a battery cell 4, comprising a positive electrode sheet, a negative electrode sheet, and a solid electrolyte 3. The surfaces of the positive and negative electrode sheets are coated with charcoal ash powder 2, and the solid electrolyte 3 is made of charcoal ash powder 2. Battery cell 4 uses conventional copper foil as the positive electrode sheet and aluminum foil as the negative electrode sheet. The negative electrode sheet can also be made of conventional graphene or conventional carbon brush material.

[0020] Production method of charcoal ash powder 2: The charcoal ash powder 2 is made from one or more woody plants, bamboo plants, and herbaceous plants of the Asteraceae family, which are roughly crushed and then further crushed into a micron-sized powder for use. This method improves raw material production efficiency and reduces costs. The charcoal ash powder 2 includes one or more of bamboo, oak, oak, oak, poplar, paper mulberry, camphor, elm, vitex negundo, sunflower, platycodon, and coconut shell.

[0021] The charcoal powder 2 made from woody plants, bamboo plants and chrysanthemum herbs is the coating of the positive and negative electrode sheets of the all-solid-state battery 1 and the main material of the solid electrolyte 3. The material has multiple functions, which can realize the assembly and isolation of the positive and negative electrode sheets, and enable the conduction of lithium ions and the free shuttle transfer of charges.

[0022] The method for coating and manufacturing the positive and negative electrode sheets of the all-solid-state battery 1 is as follows: the required raw material configuration is slowly poured into a stirring container, distilled water, a binder and an organic solvent are added to a solid concentration of between 30-50%, and the mixture is stirred and kneaded for 2-4 hours until the material is evenly kneaded; the mixture is coated on the surface of the positive and negative electrode sheets, placed in a vacuum oven at a temperature of 60-100°C and dried for 2-6 hours, and processed into electrode sheets according to the capacity of the battery cell, and the positive and negative electrode sheets are installed in order of positive and negative poles, and vacuum-sealed with aluminum-plastic film to form a battery cell 4, which is then assembled into a solid battery pack after chemical division and capacity determination for use.

[0023] The organic solvent added is any one of the following or a combination thereof: water, N, N-dimethylamide, and N-methylpyrrolidone.

[0024] Among them, the main component of charcoal ash powder is potassium carbonate K2C03, with a relative molecular mass of 138. The most abundant element is potassium, which accounts for about 12-35%. It also contains boron, aluminum, manganese and other elements.

[0025] The working principle of all-solid-state batteries: Electrolyte is an important component of the battery. It allows lithium ions to flow freely between the positive and negative electrodes, thereby realizing the charging and discharging process; when the battery is charging, the external electric field drives the lithium ions to be deintercalated from the positive electrode through the solid electrolyte and embedded in the negative electrode, while electrons compensate for the charge through the external circuit; when the battery is discharging, lithium ions return to the positive electrode from the negative electrode through the solid electrolyte, and electrons power the equipment through the external circuit to form an electric current.

[0026] The following is an introduction to woody plants, bamboo plants, and herbaceous plants of the Asteraceae family: The main areas of bamboo growth are in the eastern region (Zhejiang, Fujian, and Guangdong); the central region (Jiangxi, Anhui, Hunan, and Hubei); and the western region (Guangxi Zhuang Autonomous Region, Guizhou, Chongqing, Sichuan, and Yunnan), where it grows in large quantities and covers a wide area.

[0027] Oak trees mostly grow in the Northern Hemisphere, with approximately 200-250 species found in the Americas and over 300 species found in Asia, Europe, and northern Africa. my country is rich in oak species, with over 50 inhabitants.

[0028] Poplars are primarily found in temperate and boreal forests in the Northern Hemisphere. They are found in central, northern, northwestern, and northeastern my country. Poplars are highly adaptable and have a wide distribution range, growing from 25° to 53° north latitude and 80° to 134° east longitude. They are also widely distributed in countries such as Russia, Canada, the United States, Italy, France, and Brazil.

[0029] Paulownia chinensis is mainly distributed in wastelands, hills, fields and ditches along the three major river basins and surrounding areas of my country. Wild Paulownia chinensis is commonly seen.

[0030] The main distribution areas of the yellow broom tree are the provinces south of the Yangtze River and the areas north of the Qinling Mountains and the Huaihe River in my country. It is widely distributed and grows on hillsides, roadsides, streams and sparse forests and shrubs in southern provinces such as Hunan, Hubei, Guizhou, Sichuan, Yunnan, Guangxi Zhuang Autonomous Region, Guangdong, and Fujian.

[0031] Sunflowers are native to North America and are now widely distributed around the world. my country's main production areas are concentrated north of the Yellow River, such as Northeast China, North China, and Northwest China. They are also widely cultivated in southern China.

[0032] The oak tree will grow again two months after being cut down, with a fast growth period and abundant resources.

[0033] Poplar trees will grow again two months after being cut down, with a fast growth period and abundant resources.

[0034] like Figure 2-Figure 3 As shown, the all-solid-state battery provided by the present invention was simulated and tested in accordance with the technical requirements of the National Passenger Car Quality Supervision and Inspection Center and the Northern Automobile Quality Supervision, Inspection and Identification Testing Institute. The all-solid-state battery has a voltage of 3.7V-4.25V, a standard capacity of 27Ah, a power of 115W, a weight of 0.273kg, and an energy density of 420wH / kg. The 1.5C test was repeated for 700 cycles, with a maintenance rate of 96.4665%. The 2.0C test was repeated for 300 cycles, with a maintenance rate of 95.622%. A total of 1000 cycles were accumulated. Furthermore, according to battery capacity theoretical calculations, when the battery was charged for the last time, the battery capacity of 25.7572AH was decayed to 21AH at the end of its life. The number of cycles would reach 4568, with a maintenance rate of 80%.

[0035] According to the National Testing Institute, the test standard is 0.5C charge and discharge. To speed up the battery charge and discharge, the applicant increased the test rate to 1.5C-2.0C. Therefore, the battery should be charged and discharged 4568 times, which should be multiplied by the 1.5C rate. The formula is: 4568 * 3 = 13704 times, 13704 times ÷ 336 days = 37 years, which means the cycle life is long.

[0036] The negative electrode material of the electrode sheet can be traditional graphene or traditional carbon brush material.

[0037] The applicant has discovered that thousands of years ago, there were tens of thousands of species of woody plants, bamboo plants and Asteraceae herbaceous plants on Earth, which are not listed one by one; among them, bamboo, poplar, oak, oak, oak, mulberry, camphor, elm, sunflower, platycodon, broomrape, coconut shell, etc. are the preferred materials for making all-solid-state batteries, and completely solve the technical drawbacks of the battery source.

[0038] The above-mentioned trees are economic forests. They can be planted and harvested every year, growing year by year. Once planted, they will benefit you for a lifetime. The global resources are abundant and inexhaustible.

[0039] The applicant discovered that new materials for all-solid-state batteries can be made from woody plants, bamboo plants, and Asteraceae herbaceous plants, which can significantly reduce the global use of petroleum and coal. At the same time, new approaches to battery energy materials have been discovered, which is beneficial to the sustainable development of human society.

[0040] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. An all-solid-state battery using charcoal ash powder as material, characterized in that: The invention comprises an all-solid-state battery (1), wherein the all-solid-state battery (1) comprises a battery core (4), wherein the battery core (4) comprises a positive electrode sheet, a negative electrode sheet, and a solid electrolyte (3), wherein the surfaces of the positive electrode sheet and the negative electrode sheet are coated with charcoal ash powder (2), and the material of the solid electrolyte (3) is charcoal ash powder (2).

2. The all-solid-state battery using charcoal ash powder as material according to claim 1, characterized in that: The charcoal ash powder (2) is one or more of woody plants, bamboo plants and Asteraceae herbaceous plants, which are roughly processed and crushed, and then crushed and ground again into micron-sized powder for standby use; the charcoal ash powder (2) includes one or more of bamboo, oak, oak, oak, poplar, paper mulberry, camphor, elm, broomcorn millet, sunflower, platycodon, and coconut shell.

3. The method for preparing an all-solid-state battery using charcoal ash powder as a material according to claim 1, characterized in that: The following steps are involved: (1) Preparation of charcoal ash powder: one or more of bamboo, oak, oak, oak, poplar, paper mulberry, camphor, elm, vitex, sunflower, platycodon, and coconut shells are carbonized, crushed by rough processing, and then crushed again into micron-sized powder for use; (2) Coating of positive and negative electrode sheets of solid batteries: pour the raw materials slowly into a stirring container, add distilled water, binder and organic solvent to a solid concentration of 30-50%, stir and knead for 2-4 hours until the materials are evenly kneaded; apply on the surface of the positive and negative electrode sheets, place in a vacuum oven at a temperature of 60-100 ° C to dry for 2-6 hours, and then process into electrode sheets according to the capacity of the battery cell, assemble the positive and negative electrode sheets in order of positive and negative electrodes, and make battery cells by vacuum packaging with aluminum plastic film. After chemical division and capacity division, assemble into solid battery packs for use.

4. The all-solid-state battery using charcoal ash powder as material and the preparation method thereof according to claim 1, characterized in that: The organic solvent is any one of the following or a combination thereof: water, N,N-dimethylamide, and N-methylpyrrolidone.

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