CN113830758A - Production process of nano graphene balls - Google Patents
Production process of nano graphene balls Download PDFInfo
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- CN113830758A CN113830758A CN202110726779.5A CN202110726779A CN113830758A CN 113830758 A CN113830758 A CN 113830758A CN 202110726779 A CN202110726779 A CN 202110726779A CN 113830758 A CN113830758 A CN 113830758A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/194—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/22—Electronic properties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention belongs to the technical field of high-tech curiosity nano graphene spheres, and particularly relates to a nano graphene sphere production process, which comprises the following steps: preparing graphene conductive slurry according to a certain proportion, wherein the conductivity of the graphene conductive slurry is 6300s/m higher than that of the flake graphene conductive slurry; step two: pressing the nano graphene spheres, and detecting that the highest conductivity is 110530S/m; step three: the conductivity of the special conductive agent for the heat dissipation endurance positive electrode of the ternary lithium battery reaches 15-18 ten thousand S/m, and the conductivity of the current oily conductive agent is highest. Step four: the high-efficiency vibration swing impact nano-machine is adjusted greatly, the impact force is adjusted, and the high-efficiency vibration swing impact nano-machine is changed into a four-side eight-direction impact nano-machine by utilizing scientific principles such as machinery, mechanics, physics and the like; the structure is reasonable, and no dead angle is left by adopting strong all-around impact from top to bottom and from left to right. The nano graphene ball is a very fine ball, and the conductivity is high because the contact point is very small and the resistance derivative is the conductivity.
Description
Technical Field
The invention relates to the technical field of nano graphene spheres in the high-tech field, in particular to a production process of nano graphene spheres.
Background
Lithium ion batteries are widely used in high-tech fields such as portable electronic devices, aerospace, electric vehicles and the like due to the advantages of high energy density, high power density, no memory effect, long cycle life, small self-discharge effect and the like. In recent years, as the demand for electric vehicles and hybrid vehicles has continued to increase, the demand for lithium ion batteries has further expanded, and at the same time, higher demands have been made on energy density, rate capability, and service life.
The negative electrode material of the current commercial lithium ion battery mainly takes graphite as a main material, but the maximum theoretical lithium storage capacity of the graphite is only 372mAh/g, and the requirement of the high-energy lithium ion battery cannot be met. The theoretical capacity of silicon-based materials is much higher than that of graphite, and is considered to be one of the most promising negative electrode materials of lithium ion batteries. However, the low conductivity of silicon-based materials, as well as other factors, make them currently not widely available. The proper nano graphene ball conductive agent is added into the positive electrode and the negative electrode of the lithium battery, so that the wide contact between active substances in the positive electrode and the negative electrode and the electrolyte can be enhanced, the lithium ions can be conveniently embedded and separated, the transmission rate of electrons is increased, the impedance is reduced, the first coulombic efficiency and the rate performance of the battery are improved, and the cycle life of the battery is prolonged. At present, the conductive graphite is the most widely used conductive agent in industrial production and has the advantages of low cost and the like, but because of the point-point contact mode of the graphite and the active material, the electrode conductivity can be effectively improved only by using larger graphite.
The graphene is a monoatomic crystal, has the characteristics of ultrathin property, super-strong flexibility, extremely large specific surface area, super-strong conductivity and the like, and has more multiple electrical conductivity and electrical energy storage singularities. A proper amount of nano graphene balls or conductive agents are added into silicon-based materials of lithium ion and lead-acid batteries, the high flexibility of the nano graphene balls can relieve the falling-off of electrode materials caused by volume expansion of silicon-based active substances in the charging and discharging processes, and meanwhile, the high conductivity of the nano graphene balls can improve the conductivity of the materials, so that the energy density and the cycle life of the lithium batteries are improved. But the practical application is limited due to the severe performance degradation caused by the extremely low conductivity of graphite.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, certain simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
Therefore, the invention aims to provide a production process of nano graphene spheres, which can improve the conductivity of the nano graphene spheres and the application range in the using process.
To solve the above technical problem, according to one aspect of the present invention, the present invention provides the following technical solutions:
a production process of nano graphene balls comprises the following steps:
the method comprises the following steps: preparing graphene conductive slurry according to a certain proportion, wherein the conductivity of the graphene conductive slurry is 6300s/m higher than that of the flake graphene conductive slurry;
step two: pressing the nano graphene balls into blocks, and detecting that the conductivity is highest;
step three: the conductivity of the special conductive agent for the heat dissipation endurance positive electrode of the ternary lithium battery reaches 15-18 ten thousand S/m, and the conductivity of the current oily conductive agent is highest.
Step four: the high-efficiency vibration swing impact nano-machine is adjusted in a large degree, the impact force is adjusted, and the high-efficiency vibration swing impact nano-machine is changed into a four-side eight-direction impact nano-machine by utilizing scientific principles such as machinery, mechanics, physics and the like;
step five: impacting the nano graphene ball by using the modified high-efficiency vibration amplitude impact nano-meter machine I for 4h and 30 min;
step six: the air flow impact is transferred into a second machine, and then the mechanical, physical and mechanical principles of the all-sided impact nano machine are utilized, and the first machine and the second machine are vacuumized for 5 minutes;
step seven: simultaneously starting a first efficient vibration amplitude impact nano-meter machine and a second efficient vibration amplitude impact nano-meter machine to impact the graphene ball, wherein the time duration is 4h30 min;
step eight: after vacuumizing in the whole production process, starting an inert gas machine to protect semi-finished products and finished products;
step nine: and (3) feeding the nano graphene balls in the second four-side eight-direction impact nano machine into a packaging machine by using a novel vacuum vibration ultrasonic filtering and sucking conveyor, and carrying out vacuum packaging according to the required quantity to obtain the nano graphene balls, wherein the nano number reaches 3-5 nanometers.
As a preferred scheme of the production process of the nano graphene ball, the production process comprises the following steps: the inert gas machine is a high-purity inert gas machine, protects raw materials of high-purity graphite powder and nano graphene spheres from being oxidized, and enhances the active energy of the graphite powder and the nano graphene spheres.
Compared with the prior art, the invention has the beneficial effects that: by adopting the spherical nano graphene ball, the nano graphene ball has high conductivity because the contact point is extremely small and the resistance is low in electric conductivity; the power storage energy is increased by 10 to 30% when the lithium iron phosphate battery is added, the world problem that the ternary lithium battery is difficult to dissipate heat and easy to explode is solved, and the application in other aspects has peculiar effects.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to make the aforementioned objects, features and advantages of the invention more comprehensible.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be readily apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below.
Example 1
A production process of nano graphene balls comprises the following steps:
the method comprises the following steps: preparing graphene conductive slurry according to a certain proportion, wherein the conductivity of the graphene conductive slurry is 6300s/m higher than that of the flake graphene conductive slurry;
step two: pressing the nano graphene balls into blocks, and detecting that the conductivity is highest;
step three: the conductivity of the special conductive agent for the heat dissipation endurance positive electrode of the ternary lithium battery reaches 15-18 ten thousand S/m, and the conductivity of the current oily conductive agent is highest.
Step four: the high-efficiency vibration swing impact nano-machine is adjusted greatly, the impact force is adjusted, and the high-efficiency vibration swing impact nano-machine is changed into a four-side eight-direction impact nano-machine by utilizing scientific principles such as machinery, mechanics, physics and the like;
step five: impacting the graphene ball by using the modified high-efficiency vibration amplitude impact nano-meter for 4h and 30 min;
step six: the air flow impact is transferred into a second machine, and then the mechanical, physical and mechanical principles of the all-sided impact nano machine are utilized, and the first machine and the second machine are vacuumized for 5 minutes;
step seven: simultaneously starting a first efficient vibration amplitude impact nano-meter machine and a second efficient vibration amplitude impact nano-meter machine to impact the graphene ball, wherein the time duration is 4h30 min;
step eight: after vacuumizing in the whole production process, starting an inert gas machine to protect semi-finished products and finished products;
step nine: and (3) feeding the nano graphene balls in the second four-side eight-side impact nano-machine into a packaging machine by using a novel vacuum vibration ultrasonic filtering and sucking conveyor, and carrying out vacuum packaging according to the required quantity to produce the graphene balls, wherein the nano number reaches 3-5 nanometers.
Specifically, the inert gas machine is a high-purity inert gas machine, so that the raw materials of high-purity graphite powder and nano graphene balls are protected from being oxidized, and the active energy of the graphite powder is enhanced.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no structural conflict, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (2)
1. A production process of nano graphene balls is characterized by comprising the following steps:
the method comprises the following steps: preparing graphene conductive slurry according to a certain proportion, wherein the conductivity of the graphene conductive slurry is 6300s/m higher than that of the flake graphene conductive slurry;
step two: pressing the nano graphene balls into blocks, and detecting that the conductivity is highest;
step three: the conductivity of the special conductive agent for the heat dissipation endurance positive electrode of the ternary lithium battery reaches 15-18 ten thousand S/m, and the conductivity of the current oily conductive agent is highest.
Step four: the high-efficiency vibration swing impact nano-machine is greatly adjusted, the adjusted impact force is strong, and the high-efficiency vibration swing impact nano-machine is changed into a four-side eight-direction impact nano-machine by utilizing scientific principles such as machinery, mechanics, physics and the like;
step five: impacting graphite powder by using the modified high-efficiency vibration amplitude impact nano-meter machine I for 4h and 30 min;
step six: the air flow impact is transferred into a second machine, and then the mechanical, physical and mechanical principles of the all-sided impact nano machine are utilized, and the first machine and the second machine are vacuumized for 5 minutes;
step seven: simultaneously starting a first high-efficiency vibration amplitude impact nano-meter machine and a second high-efficiency vibration amplitude impact nano-meter machine to impact the graphite powder, wherein the time duration is 4h30 min;
step eight: after vacuumizing in the whole production process, starting an inert gas machine to protect semi-finished products and finished products;
step nine: and (3) feeding the nano graphene balls in the second four-side eight-direction impact nano machine into a packaging machine by using a novel vacuum vibration ultrasonic filtering and sucking conveyor, and carrying out vacuum packaging according to the required quantity to obtain the nano graphene balls, wherein the nano number reaches 3-5 nanometers.
2. The nano graphene ball production process according to claim 1, wherein: the inert gas machine is a high-purity inert gas machine, protects raw materials of high-purity graphite powder and nano graphene balls from being oxidized, enhances the active energy of the graphite powder and ensures safety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110726779.5A CN113830758A (en) | 2021-06-29 | 2021-06-29 | Production process of nano graphene balls |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110726779.5A CN113830758A (en) | 2021-06-29 | 2021-06-29 | Production process of nano graphene balls |
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| CN113830758A true CN113830758A (en) | 2021-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116445099A (en) * | 2023-03-25 | 2023-07-18 | 上海我赛电池科技有限公司 | High-conductivity special conductive adhesive for solid ternary lithium heat conduction battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150367381A1 (en) * | 2014-06-19 | 2015-12-24 | Uchicago Argonne, Llc. | Low friction wear resistant graphene films |
| CN105271170A (en) * | 2015-11-03 | 2016-01-27 | 山西中兴环能科技有限公司 | Preparation method of nano carbon and composite material of nano carbon |
| WO2018032975A1 (en) * | 2016-08-15 | 2018-02-22 | 福建新峰二维材料科技有限公司 | Manufacturing method of lithium-ion battery negative-electrode material effectively buffering volume change effect of silicon |
| CN110054179A (en) * | 2019-05-29 | 2019-07-26 | 张新庄 | Ball shaped nano graphene production technology |
| CN111916748A (en) * | 2020-08-14 | 2020-11-10 | 张超 | Spherical nano graphene conductive paste |
-
2021
- 2021-06-29 CN CN202110726779.5A patent/CN113830758A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150367381A1 (en) * | 2014-06-19 | 2015-12-24 | Uchicago Argonne, Llc. | Low friction wear resistant graphene films |
| CN105271170A (en) * | 2015-11-03 | 2016-01-27 | 山西中兴环能科技有限公司 | Preparation method of nano carbon and composite material of nano carbon |
| WO2018032975A1 (en) * | 2016-08-15 | 2018-02-22 | 福建新峰二维材料科技有限公司 | Manufacturing method of lithium-ion battery negative-electrode material effectively buffering volume change effect of silicon |
| CN110054179A (en) * | 2019-05-29 | 2019-07-26 | 张新庄 | Ball shaped nano graphene production technology |
| CN111916748A (en) * | 2020-08-14 | 2020-11-10 | 张超 | Spherical nano graphene conductive paste |
Non-Patent Citations (2)
| Title |
|---|
| 叶琳: "石墨烯产业前沿技术发展方向研究", 新材料产业, no. 09, pages 57 - 60 * |
| 唐佳: "石墨烯在锂离子电池中的应用", 中国金属通报, no. 07, pages 220 - 221 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116445099A (en) * | 2023-03-25 | 2023-07-18 | 上海我赛电池科技有限公司 | High-conductivity special conductive adhesive for solid ternary lithium heat conduction battery |
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