CN111933907A - Durable battery negative electrode material and processing technology thereof - Google Patents
Durable battery negative electrode material and processing technology thereof Download PDFInfo
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- CN111933907A CN111933907A CN202010752004.0A CN202010752004A CN111933907A CN 111933907 A CN111933907 A CN 111933907A CN 202010752004 A CN202010752004 A CN 202010752004A CN 111933907 A CN111933907 A CN 111933907A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/502—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese for non-aqueous cells
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- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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Abstract
The invention discloses a durable battery cathode material and a processing technology thereof, wherein the material is prepared from the following raw materials in parts by weight: 40% -50% of graphene, 20% -35% of manganese oxide nanosheets, 10% -20% of active substances, 5% -10% of adhesives, 5% -10% of nitrides and 3% -8% of other substances; the technology adopts a method that 42% of graphene and 22% of manganese oxide nanosheets are synthesized into an interactive multilayer laminated composite material, and the composite material is used as a negative electrode material of a lithium and sodium ion rechargeable battery, so that the charge and discharge capacity of the battery can be improved by more than two times, and the repeated service life can be prolonged. Adding part of acidic substances into the preparation tank, heating and simultaneously performing ultrasonic treatment to oxidize the surface of the medium ball, and adding elements such as boron, silicon, nitrogen, phosphorus and the like for doping treatment, so that the charging and discharging performance of the natural graphite cathode can be improved by using the oxidation treatment, the lithium ion desorption behavior of the carbon material can be obviously changed by using the doping step, and the service effect and the service life of the cathode material are improved.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a durable battery cathode material and a processing technology thereof.
Background
The increasing environmental problems and the reduction of non-renewable energy sources have created an increasing demand for renewable clean energy sources and energy storage and conversion technologies. As a novel chemical power source, the lithium ion battery has the characteristics of high energy density, long cycle life, environmental friendliness and the like, is widely applied to portable mobile equipment such as mobile phones and notebook computers, and is more hopefully applied to the fields of electric automobiles and the like. However, graphite materials are mainly adopted as the cathode materials of the lithium ion batteries which are commercialized at present, and the materials have good cycle stability performance but low capacity (the theoretical capacity is 372mAh/g), so that the large-scale application of the lithium ion batteries is limited. The battery cathode material has poor durability, short service life and low charge and discharge performance.
In order to solve the problems, a durable battery negative electrode material and a processing technology thereof are provided, and the durable battery negative electrode material has the advantages of long service life, good charge and discharge performance and the like.
Disclosure of Invention
The invention aims to provide a durable battery cathode material and a processing technology thereof, wherein a black silicon carbide crystal block is selected as a raw material, the crystal block is crushed to be within 100mm by using a hydraulic hammer, then the crystal block is crushed to be within 30mm by using a jaw crusher, finally the crystal block is crushed to be within 3mm by using a ball mill, the material in the mill is taken out, the raw material within 0-1.5mm is sieved by using a vibrating screen to be used as a self-grinding medium, the rest raw material is used as other raw material, the raw material of the self-grinding machine with the thickness of 0-1.5mm is reshaped again, the shape of the reshaped ball is used as a self-grinding medium ball, partial acid substances are added into a preparation tank, the medium ball is heated and simultaneously treated by ultrasonic wave to oxidize the surface of the medium ball, elements such as boron, silicon, nitrogen, phosphorus and the like are added for doping treatment, a non-carbon element compound is firstly used for dipping or, the preparation raw materials are dried by a drying machine, kept stand for a period of time and finally subjected to roll forming by a rolling device, so that the preparation method has the advantages of long service life, good charge and discharge performance and the like, and can solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a durable battery anode material, characterized in that: the material is prepared from the following raw materials in parts by weight: 40% -50% of graphene, 20% -35% of manganese oxide nanosheets, 10% -20% of active substances, 5% -10% of adhesives, 5% -10% of nitrides and 3% -8% of other substances.
Further, the material is prepared from the following raw materials in parts by weight: 41-45% of graphene, 21-30% of manganese oxide nanosheets, 11-18% of active substances, 6-8% of adhesives, 6-8% of nitrides and 4-7% of other substances.
Further, the material is prepared from the following raw materials in parts by weight: graphene 42%, manganese oxide nanosheets 22%, active material 16%, adhesive 7%, nitride 7%, and other 6%.
The invention provides another technical scheme that: the processing technology of the durable battery negative electrode material comprises the following steps:
s1: selecting a black silicon carbide crystal block as a raw material;
s2: crushing the crystal blocks to be within 100mm by using a hydraulic hammer, crushing the crystal blocks to be within 30mm by using a jaw crusher, and crushing the crystal blocks to be within 3mm by using a ball mill;
s3: taking out the materials in the mill, sieving the materials by using a vibrating screen to obtain raw materials within 0-1.5mm serving as self-grinding media, and taking the rest as other raw materials;
s4: reshaping the raw material of the 0-1.5mm autogenous mill again to be spherical as a self-grinding medium ball;
s5: adding part of acidic substances into the preparation tank, heating and simultaneously carrying out ultrasonic treatment to oxidize the surface of the medium ball;
s6: adding boron, silicon, nitrogen, phosphorus and other elements for doping treatment, firstly, impregnating or mixing non-carbon element compounds into a precursor, and then, performing heat treatment to prepare doped carbon;
s7: and (3) drying the prepared raw materials by using a drying machine, standing for a period of time, and finally performing roll forming on the raw materials by using rolling equipment.
Further, for the second step, the ingot was pulverized to 2mm using a ball mill and stored in a sealed environment at the same time.
Further, in the third and fourth steps, the particle size of the raw material sieved by the vibrating screen was 1mm, and the 1mm raw material from the mill was reshaped into a spherical shape.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a durable battery cathode material and a processing technology thereof, wherein the technology adopts a method for synthesizing an interactive multilayer laminated composite material by using 42% of graphene and 22% of manganese oxide nanosheets, and the composite material can be used as the cathode material of a lithium and sodium ion rechargeable battery, can improve the charge-discharge capacity of the battery by more than two times, and can prolong the repeated service life, or can solve the problem that the capacity and the service life of the battery cannot be obtained at present.
2. According to the durable battery cathode material and the processing technology thereof, part of acidic substances are added into a preparation tank, the surface of a medium ball is oxidized by heating and ultrasonic treatment, and elements such as boron, silicon, nitrogen, phosphorus and the like are added for doping treatment, so that the charging and discharging performance of a natural graphite cathode can be improved by using the oxidation treatment, the lithium ion desorption behavior of a carbon material can be obviously changed by using the doping step, the service effect of the cathode material is improved, and the service life of the cathode material is prolonged.
Drawings
FIG. 1 is a schematic view of a durable negative electrode material for a battery according to the present invention;
FIG. 2 is a flow chart of a process for manufacturing the durable negative electrode material for a battery according to the present invention;
FIG. 3 is a process step diagram of the durable negative electrode material for battery of the present invention;
fig. 4 is a sector view of the raw material composition of the durable battery negative electrode material of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
a durable battery negative electrode material is prepared from the following raw materials in parts by weight: 40% -50% of graphene, 20% -35% of manganese oxide nanosheets, 10% -20% of active substances, 5% -10% of adhesives, 5% -10% of nitrides and 3% -8% of other substances.
Example two:
a durable battery negative electrode material is prepared from the following raw materials in parts by weight: 41-45% of graphene, 21-30% of manganese oxide nanosheets, 11-18% of active substances, 6-8% of adhesives, 6-8% of nitrides and 4-7% of other substances.
Example three:
a durable negative electrode material for a battery, which is prepared from the following raw materials in parts by weight, as shown in fig. 1 and 4: graphene 42%, manganese oxide nanosheets 22%, active material 16%, adhesive 7%, nitride 7%, and other 6%.
Example four:
in order to better illustrate the processing process of the durable battery negative electrode material, referring to fig. 2-3, the present embodiment now proposes a processing process of the durable battery negative electrode material, which includes the following steps:
s1: selecting a black silicon carbide crystal block as a raw material;
s2: crushing the crystal blocks to be within 100mm by using a hydraulic hammer, crushing the crystal blocks to be within 30mm by using a jaw crusher, and crushing the crystal blocks to be within 3mm by using a ball mill;
s3: taking out the materials in the mill, sieving the materials by using a vibrating screen to obtain raw materials within 0-1.5mm serving as self-grinding media, and taking the rest as other raw materials;
s4: reshaping the raw material of the 0-1.5mm autogenous mill again to be spherical as a self-grinding medium ball;
s5: adding part of acidic substances into the preparation tank, heating and simultaneously carrying out ultrasonic treatment to oxidize the surface of the medium ball;
s6: adding boron, silicon, nitrogen, phosphorus and other elements for doping treatment, firstly, impregnating or mixing non-carbon element compounds into a precursor, and then, performing heat treatment to prepare doped carbon;
s7: and (3) drying the prepared raw materials by using a drying machine, standing for a period of time, and finally performing roll forming on the raw materials by using rolling equipment.
And (5) crushing the crystal blocks to 2mm by using a ball mill, and simultaneously storing in a sealed environment.
And (5) screening the raw material with the particle size of 1mm by using a vibrating screen, reshaping the raw material of the 1mm self-grinding machine again, and forming the raw material into a spherical shape according to the third step and the fourth step.
The working principle is as follows: selecting black silicon carbide crystal blocks as raw materials, crushing the crystal blocks to be within 100mm by using a hydraulic hammer, crushing the crystal blocks to be within 30mm by using a jaw crusher, crushing the crystal blocks to be within 3mm by using a ball mill, taking out materials in the mill, screening out the raw materials to be within 0-1.5mm by using a vibrating screen to be used as a self-grinding medium, taking the rest raw materials as other raw materials, reshaping the raw materials of the self-grinding machine to be 0-1.5mm, reshaping the raw materials of the self-grinding machine to be spherical, using the spherical raw materials as self-grinding medium balls, adding partial acidic substances into a preparation tank, heating and simultaneously using ultrasonic treatment to oxidize the surfaces of the medium balls, adding elements such as boron, silicon, nitrogen, phosphorus and the like for doping treatment, firstly mixing the spherical raw materials into non-carbon element compounds or precursors, carrying out thermal treatment to prepare doped carbon, drying the prepared raw materials by using a drying machine, and standing for a, and finally, carrying out roll forming on the blank by using rolling equipment.
In summary, the following steps: the durable battery cathode material and the processing technology thereof select a black silicon carbide crystal block as a raw material, the technology adopts a method for synthesizing an interactive multilayer laminated composite material by using 42 percent of graphene and 22 percent of manganese oxide nano-sheets, the composite material is used as the cathode material of a lithium and sodium ion rechargeable battery, the charge-discharge capacity of the battery can be improved by more than two times, and the service life of the battery can be prolonged, or the problem that the current battery capacity and service life cannot be obtained at present can be solved, a hydraulic hammer is used for crushing the crystal block to be within 100mm, a jaw crusher is used for crushing the crystal block to be within 30mm, a ball mill is used for crushing the crystal block to be within 3mm, the material in a mill is taken out, a vibrating screen is used for screening out the raw material within 0-1.5mm as an autogenous grinding medium, the rest raw materials are used as other raw materials, the raw material of the autogenous mill of 0-1.5mm, the preparation method comprises the steps of shaping the shape of a sphere as a self-grinding medium sphere, adding part of acidic substances into a preparation tank, heating and simultaneously performing ultrasonic treatment to oxidize the surface of the medium sphere, adding elements such as boron, silicon, nitrogen, phosphorus and the like to perform doping treatment, firstly, impregnating or mixing non-carbon element compounds into a precursor, performing thermal treatment to prepare doped carbon, so that the charging and discharging performance of a natural graphite cathode can be improved by using the oxidation treatment, the behavior of lithium ion deintercalation of the carbon material can be remarkably changed by using the doping step, the service effect and the service life of the cathode material are improved, drying the preparation raw materials by using a drying machine, standing for a period of time, and finally, performing roll forming by using rolling equipment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (6)
1. A durable battery anode material, characterized in that: the material is prepared from the following raw materials in parts by weight: 40% -50% of graphene, 20% -35% of manganese oxide nanosheets, 10% -20% of active substances, 5% -10% of adhesives, 5% -10% of nitrides and 3% -8% of other substances.
2. A durable negative electrode material for batteries according to claim 1, wherein: the material is prepared from the following raw materials in parts by weight: 41-45% of graphene, 21-30% of manganese oxide nanosheets, 11-18% of active substances, 6-8% of adhesives, 6-8% of nitrides and 4-7% of other substances.
3. A durable negative electrode material for a battery as claimed in claim 2, wherein: the material is prepared from the following raw materials in parts by weight: graphene 42%, manganese oxide nanosheets 22%, active material 16%, adhesive 7%, nitride 7%, and other 6%.
4. A process for the production of a durable negative electrode material for batteries according to any of claims 1 to 3, characterized in that: the method comprises the following steps:
s1: selecting a black silicon carbide crystal block as a raw material;
s2: crushing the crystal blocks to be within 100mm by using a hydraulic hammer, crushing the crystal blocks to be within 30mm by using a jaw crusher, and crushing the crystal blocks to be within 3mm by using a ball mill;
s3: taking out the materials in the mill, sieving the materials by using a vibrating screen to obtain raw materials within 0-1.5mm serving as self-grinding media, and taking the rest as other raw materials;
s4: reshaping the raw material of the 0-1.5mm autogenous mill again to be spherical as a self-grinding medium ball;
s5: adding part of acidic substances into the preparation tank, heating and simultaneously carrying out ultrasonic treatment to oxidize the surface of the medium ball;
s6: adding boron, silicon, nitrogen, phosphorus and other elements for doping treatment, firstly, impregnating or mixing non-carbon element compounds into a precursor, and then, performing heat treatment to prepare doped carbon;
s7: and (3) drying the prepared raw materials by using a drying machine, standing for a period of time, and finally performing roll forming on the raw materials by using rolling equipment.
5. The process of claim 4 for preparing a durable negative electrode material for batteries, wherein: and (5) crushing the crystal blocks to 2mm by using a ball mill, and simultaneously storing in a sealed environment.
6. The process of claim 4 for preparing a durable negative electrode material for batteries, wherein: and (5) screening the raw material with the particle size of 1mm by using a vibrating screen, reshaping the raw material of the 1mm self-grinding machine again, and forming the raw material into a spherical shape according to the third step and the fourth step.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946258A (en) * | 2017-02-28 | 2017-07-14 | 六安市醒狮高新技术有限公司 | Carborundum cell negative electrode material production method |
| CN109546093A (en) * | 2017-09-22 | 2019-03-29 | 天津大学 | Redox graphene and four oxidations three are modified titanium carbide lithium ion battery negative material and preparation method thereof suddenly |
| JP2019153404A (en) * | 2018-03-01 | 2019-09-12 | 国立研究開発法人物質・材料研究機構 | Negative electrode for secondary battery, manufacturing method thereof, and secondary battery using the same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946258A (en) * | 2017-02-28 | 2017-07-14 | 六安市醒狮高新技术有限公司 | Carborundum cell negative electrode material production method |
| CN109546093A (en) * | 2017-09-22 | 2019-03-29 | 天津大学 | Redox graphene and four oxidations three are modified titanium carbide lithium ion battery negative material and preparation method thereof suddenly |
| JP2019153404A (en) * | 2018-03-01 | 2019-09-12 | 国立研究開発法人物質・材料研究機構 | Negative electrode for secondary battery, manufacturing method thereof, and secondary battery using the same |
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