A pulsed high current impact device for cyclically macro-scale production of high purity graphene

Abstract

This invention relates to the field of nanomaterials technology, and particularly to a pulsed high-current impact device for the cyclic mass production of high-purity graphene. The device includes a main unit, a quick-return six-bar linkage, a stirring and molding device, a pulsed high-current reaction device, and a graphite-graphene powder separation device. Graphite oxide powder is placed in the stirring and molding device, and a scraper presses the powder into graphite rods. A high-voltage moving electrode pushes the graphite rods into the pulsed high-current generator. The high current directly interacts with the large quantity of graphite, inducing a severe thermal stress effect (thermal expansion) within the graphite particles. This overcomes the van der Waals forces between the graphite layers, causing the graphite sheets to peel off in situ. The graphene is collected by the graphite-graphene powder separation device. Unreacted graphite and a small amount of substandard graphene are returned to the stirring and molding device for reuse. The entire preparation process is completed in a vacuum environment to obtain high-yield, high-purity graphene.

Description

Technical Field

[0001] This invention relates to the field of nanomaterials technology, and in particular to a pulsed high-current impact device for the cyclic mass production of high-purity graphene. Background Technology

[0002] Among numerous nanomaterials, the research and application of novel carbon nanomaterials has been a key focus and frontier of research over the past three decades, with the discovery of graphene being one of the landmark achievements in this field. Broadly speaking, graphene materials include single-layer and multi-layer graphite layered structures. Graphene is currently the most ideal two-dimensional nanomaterial, possessing excellent mechanical, electrical, and thermal properties. The unique structure and numerous superior properties of graphene determine its profound impact on fundamental research.

[0003] Graphene, known as the "king of materials," has broad application prospects in energy storage, medical applications, and electronic devices. In 2004, Novoselovt et al. prepared monolayer graphene using micromechanical separation. However, this method is difficult to control the product size, has low production efficiency, and cannot be mass-produced and applied, limiting its application to small-scale production. The low efficiency and high cost of this method severely restrict the commercial production of graphene. The redox method is currently the mainstream method for large-scale graphene preparation; however, redox graphene contains impurities and defects that affect its electron transport properties and mechanical properties. The long auxiliary time and numerous steps involved in the preparation process also affect the efficiency of graphene preparation. Furthermore, the process generates toxic gases and wastewater, causing environmental pollution. Therefore, researching an efficient, low-cost method for preparing high-purity graphene is of great significance for the further development and application of graphene. Summary of the Invention

[0004] The purpose of this invention is to provide a pulsed high-current impact device for the cyclic mass preparation of high-purity graphene. By directly interacting a large current with a large amount of graphite, a severe thermal stress effect is induced inside the graphite particles, thereby efficiently obtaining high-purity graphene.

[0005] To achieve the above objectives, the present invention provides a pulsed high-current impact device for the large-scale preparation of high-purity graphene in a cyclic manner, comprising a main unit cover, a quick-return six-bar device, a stirring and molding device, a pulsed high-current reaction device, and a graphite-graphene powder separation device. The main unit cover, the pulsed high-current reaction device, and the graphite-graphene powder separation device are sequentially and fixedly connected. The inlet of the stirring and molding device is located inside the main unit cover and below the feed port of the main unit cover. The outlet of the stirring and molding device is connected to the pulsed high-current reaction device. The quick-return six-bar device is located on the side of the main unit cover away from the pulsed high-current reaction device. One end of the graphite-graphene powder separation device is fixedly connected to the feed port of the main unit cover.

[0006] The mixing and molding device includes a mixing servo motor, a drum, a worm gear assembly, a coupling, and a scraper. The drum is fixedly connected to the turbine near the graphite-graphene powder separation device via a keyway. The inner wall of the drum has several semi-circular grooves. The scraper is disposed inside the drum, with one end fixedly connected to the main cover and the other end slidably connected to the inner surface of the drum's central hole. The two ends of the coupling are respectively connected to the mixing servo motor and the worm gear assembly. The output shaft of the worm gear assembly is keyed to the central cylinder of the drum.

[0007] In the quick-return six-bar linkage, the drive rod, the first swing rod, the L-shaped double swing rod, the second swing rod, and the sliding rod are hinged together. One end of the drive rod and the first swing rod are respectively hinged to the L-shaped support plate. The body of the sliding rod is connected to the L-shaped support plate through a sliding joint. One end of the drive rod is connected to the drive servo motor.

[0008] The pulsed high-current reaction device includes a high-voltage electrode block, a constraint tube, a sleeve, a low-voltage electrode block, a high-voltage moving electrode, a low-voltage moving electrode, an insulating block, a low-voltage electrode needle, a spring, and a connecting electrode. The high-voltage electrode block and the constraint tube are fixedly connected to the sleeve from left to right. The low-voltage electrode block passes through the sleeve and the constraint tube, and protrudes 3-5 mm in the constraint tube. The high-voltage moving electrode and the low-voltage moving electrode are respectively fixed to the insulating block. The right end of the low-voltage moving electrode is connected to the low-voltage electrode needle in a sliding pair. The low-voltage moving electrode and the low-voltage electrode needle are limited by a spring. The connecting electrode is respectively sleeved on the high-voltage moving electrode and the low-voltage moving electrode.

[0009] The length of the low-pressure moving electrode is 3 to 5 mm longer than the sum of the length of the high-pressure moving electrode and the thickness of the roller.

[0010] The inlet flange of the V-shaped conveying pipe of the graphite-graphene powder separation device is fixed to the outlet of the sleeve. The first spiral pipe and the second spiral pipe are respectively installed in the two pipes of the V-shaped conveying pipe. The first filter screen and the second filter screen are also installed in the groove of the V-shaped conveying pipe.

[0011] The first spiral tube and the first filter screen tube are interference fit, the second spiral tube and the second filter screen tube are interference fit, and the hole wall of the first filter screen tube and the second filter screen tube section placed in the V-shaped conveying pipe is 2cm smaller than the inner wall diameter of the V-shaped conveying pipe.

[0012] The graphite-graphene powder separation device is equipped with two drive servo motors, which are respectively connected to the first spiral tube and the second spiral tube.

[0013] The pulsed high-current reaction device is equipped with two connecting electrodes.

[0014] This invention provides a pulsed high-current impact device for the large-scale cyclic preparation of high-purity graphene, comprising a main unit, a quick-return six-bar device, a stirring and molding device, a pulsed high-current reaction device, and a graphite-graphene powder separation device. Graphite oxide powder is placed in the stirring and molding device, and a scraper presses the powder into graphite rods. A high-voltage moving electrode pushes the graphite rods into the pulsed high-current generator. The high current directly interacts with the large amount of graphite, inducing a severe thermal stress effect (thermal expansion) within the graphite particles. This overcomes the van der Waals forces between graphite layers, causing the graphite sheets to peel off in situ. The graphene is collected by the graphite-graphene powder separation device, while the remaining unreacted graphite and a small amount of substandard graphene are returned to the stirring and molding device for reuse. The entire preparation process is completed in a vacuum environment to obtain high-yield, high-purity graphene. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a pulsed high-current impact device for the cyclic mass production of high-purity graphene according to the present invention.

[0017] Figure 2 This is a schematic diagram of the internal structure of a pulsed high-current impact device for the cyclic mass production of high-purity graphene according to the present invention.

[0018] Figure 3 This is a schematic diagram of the mixing and molding apparatus of the present invention.

[0019] Figure 4 This is a schematic diagram of the internal structure of the mixing and molding device of the present invention.

[0020] Figure 5 This is a schematic diagram of the quick-return six-bar device of the present invention.

[0021] Figure 6 This is a schematic diagram of the pulsed high-current reaction device of the present invention.

[0022] Figure 7 This is a schematic diagram of the graphite-graphene powder separation device of the present invention.

[0023] 1-Main unit cover, 2-Quick return six-bar device, 3-Stirring and molding device, 4-Pulse high current reaction device, 5-Graphite-graphene powder separation device, 701-Stirring servo motor, 702-Drum, 703-Worm gear device, 704-Coupling, 705-Scraper, 801-Drive rod, 802-First swing arm, 803-L-shaped double swing arm, 804-Second swing arm, 805-Sliding rod, 806-L-shaped support plate, 807-Six-bar servo motor, 9 01-High-voltage electrode block, 902-Constraint tube, 903-Sleeve, 904-Low-voltage electrode block, 905-High-voltage moving electrode, 906-Low-voltage moving electrode, 907-Insulating block, 908-Low-voltage electrode needle, 909-Spring, 9010-Connecting electrode, 1001-V-shaped delivery tube, 1002-First spiral tube, 1003-Second spiral tube, 1004-First filter screen tube, 1005-Second filter screen tube, 1006-Drive servo motor. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] Please see Figures 1 to 7 This invention proposes a pulsed high-current impact device for the large-scale preparation of high-purity graphene using a cyclic method. The device includes a main housing 1, a rapid-return six-bar device 2, a stirring and molding device 3, a pulsed high-current reaction device 4, and a graphite-graphene powder separation device 5. The main housing 1, the pulsed high-current reaction device 4, and the graphite-graphene powder separation device 5 are sequentially and fixedly connected. The inlet of the stirring and molding device 3 is located inside the main housing 1, below the feed inlet of the main housing 1. The outlet of the stirring and molding device 3 is connected to the pulsed high-current reaction device 4. The rapid-return six-bar device 2 is located on the side of the main housing 1 away from the pulsed high-current reaction device 4. One end of the graphite-graphene powder separation device 5 is fixedly connected to the feed inlet of the main housing 1.

[0026] The mixing and molding device 3 includes a mixing servo motor 701, a drum 702, a worm gear device 703, a coupling 704, and a scraper 705. The drum 702 is fixedly connected inside the main unit cover 1. The inner wall of the drum 702 has several semi-circular grooves. The scraper 705 is disposed inside the drum 702. One end of the scraper 705 is fixedly connected to the main unit cover 1, and the other end is slidably connected to the inner surface of the drum 702. The two ends of the coupling 704 are respectively connected to the mixing servo motor 701 and the worm gear device 703. The output shaft of the worm gear device 703 is keyed to the center cylinder of the drum 702.

[0027] The drive rod 801, the first swing rod 802, the L-shaped double swing rod 803, the second swing rod 804, and the sliding rod 805 in the quick-return six-bar device 2 are hinged together. One end of the drive rod 801 and the first swing rod 802 are respectively hinged to the L-shaped support plate 806. The body of the sliding rod 805 is connected to the L-shaped support plate 806 through a sliding joint. One end of the drive rod 801 is keyed to the drive servo motor 807.

[0028] The pulsed high-current reaction device 4 includes a high-voltage electrode block 901, a constraint tube 902, a sleeve 903, a low-voltage electrode block 904, a high-voltage moving electrode 905, a low-voltage moving electrode 906, an insulating block 907, a low-voltage electrode needle 908, a spring 909, and connecting electrodes. The high-voltage electrode block 901 and the constraint tube 902 are fixedly connected to the sleeve 903 from left to right. The low-voltage electrode block 904 passes through the sleeve 903 and the constraint tube 902, and protrudes 3-5mm from the constraint tube 902. The high-voltage moving electrode 905 and the low-voltage moving electrode 906 are respectively fixed to the insulating block 907. The right end of the low-voltage moving electrode 906 is connected to the low-voltage electrode needle 908 as a sliding pair. The low-voltage moving electrode 906 and the low-voltage electrode needle 908 are limited by a spring 909. The connecting electrodes are respectively sleeved on the high-voltage moving electrode 905 and the low-voltage moving electrode 906.

[0029] The length of the low-pressure moving electrode 906 is 3 to 5 mm longer than the sum of the length of the high-pressure moving electrode 905 and the thickness of the roller 702.

[0030] The feed inlet flange of the V-shaped conveying pipe 1001 of the graphite-graphene powder separation device 5 is fixed to the discharge port of the sleeve 903. The first spiral pipe 1002 and the second spiral pipe 1003 are respectively arranged in the two pipes of the V-shaped conveying pipe 1001. The first filter screen 1004 and the second filter screen 1005 are also arranged in the groove of the V-shaped conveying pipe 1001.

[0031] The first spiral tube 1002 and the first filter screen tube 1004 are interference fits, and the second spiral tube 1003 and the second filter screen tube 1005 are interference fits. The hole walls of the first filter screen tube 1004 and the second filter screen tube 1005 placed in the V-shaped conveying tube 1001 are both 2 cm smaller than the diameter of the inner wall of the V-shaped conveying tube 1001.

[0032] The graphite-graphene powder separation device 5 is equipped with two drive servo motors 1006, which are respectively connected to the first spiral tube 1002 and the second spiral tube key 1003.

[0033] The pulsed high-current reaction device 4 is equipped with two connecting electrodes 9010.

[0034] In this embodiment, graphene oxide powder is first fed into the mixing and molding device 3 through the feed port of the main unit cover 1. The mixing and molding device 3 mixes the graphene powder evenly and rolls it into graphene rods. The quick-return six-bar device 2 sends the graphene rods into the reaction chamber of the pulsed high-current reaction device 4. The high current directly interacts with the large amount of graphite, inducing a severe thermal stress effect (thermal expansion) inside the graphite particles, overcoming the van der Waals forces between the graphite layers, and causing the graphite sheets to peel off in situ. The graphite-graphene powder separation device 5 screens out the graphene, and the remaining graphite waste is fed back into the mixing and molding device 3 as raw material. Through recycling and reuse, the goal of efficiently and massively preparing high-purity graphene is achieved.

[0035] The following provides further explanation of each part:

[0036] The mixing and molding device 3 includes a mixing servo motor 701, a drum 702, a worm gear assembly 703, a coupling 704, and a scraper 705. The scraper 705 is fixed inside the drum 702. The center hole of the drum 702 is connected to the shaft end of the scraper 705 via a bearing, and the inner wall of the drum 702 contacts the scraper head of the scraper 705. The hollow shaft end of the drum 702 is connected to the worm gear of the worm gear assembly 703. Graphite powder enters the mixing and molding device 3 through the feed port of the main unit cover 1. The mixing servo motor 701 drives the worm gear, causing the drum 702 to rotate intermittently. Since the scraper 705 remains stationary, the inner wall of the drum 702 contacts the scraper 705. 5. Relative motion is generated. When the groove on the inner wall of the drum 702 passes the scraper 705, the graphite powder is pressed into the groove to form a graphite rod. At this time, the stirring servo motor 701 stops rotating. The groove on the inner wall of the drum 702, the center hole of the high-voltage motor block 901, and the center hole of the constraint tube 902 are aligned one by one so that the push rod (high-voltage moving electrode 905) of the quick-return six-bar device 2 can push the graphite rod into the constraint tube 902. Since there are 6 grooves evenly distributed on the inner wall of the drum 702, the drum 702 stops after rotating 1 / 6 turn during operation. After the quick-return six-bar device 2 completes the quick-return operation, the drum 702 performs the next 1 / 6 turn of rotation, and continues to repeat until the preparation is completed.

[0037] The drive rod 801, first swing rod 802, L-shaped double swing rod 803, second swing rod 804, and sliding rod 805 in the quick-return six-bar device 2 are connected by hinges. One end of the drive rod 801 and the first swing rod 802 are respectively restricted to the L-shaped support plate 806 by hinges. The body of the sliding rod 805 is connected to the L-shaped support plate 806 by a sliding pair. The drive rod 801 is powered by the upright servo motor 807 and makes uniform circular motion, which drives the connecting rods to make relative motion, and finally realizes the linear reciprocating motion of the sliding rod 805.

[0038] Furthermore, the pulsed high-current reaction device 4 is fixedly connected to the right side of the main unit cover 1. The high-voltage electrode block 901 and the constraint tube 902 are sequentially fixed in the sleeve 903 from left to right. The low-voltage electrode block 904 passes through the small hole below the sleeve 903 and the constraint tube 902 and is fixedly connected in the small hole. During the fixing, the upper end of the low-voltage electrode block 904 needs to protrude 3-5mm in the hole of the constraint tube 902 to ensure that the graphite rod can touch the low-voltage electrode block 904 to form a closed circuit. 905 and 906 are fixed to the insulating block 907. The right end of the low-voltage moving electrode 906 and the low-voltage electrode needle 908 are designed as a sliding joint, and the two are limited by a spring 909. The length of the low-voltage moving electrode 906 is 3-5 mm longer than the total length of the high-voltage moving electrode 905 and the graphite rod, ensuring that when the graphite rod is pushed in, the low-voltage moving electrode needle 908 touches the low-voltage electrode block 904 first, and the spring 909 is compressed to wait for the right end of the graphite rod. When the low-voltage electrode block 904 is touched, the pulsed high-current circuit discharges accurately. The connecting electrode 9010 is fixed to the left side of the main unit cover 1. The connecting electrode 9010 is respectively sleeved on the high-voltage moving electrode 905 and the low-voltage moving electrode 906. The high-voltage moving electrode 901 pushes the graphite rod in the groove of the roller 702 through the central hole of the high-voltage electrode block 901 into the constraint tube 902. Since the length of the low-voltage moving electrode 906 is 3-5 mm longer than the total length of the high-voltage moving electrode 905 plus the graphite rod, the needle 908 of the low-voltage moving electrode will touch the low-voltage electrode block 904 first. The spring 909 is compressed and waits for the right end of the graphite rod to touch the low-voltage electrode block 904. When the right end of the graphite rod touches the low-voltage electrode block 904, the capacitors connected to the two connecting electrodes 9010 discharge. The large current directly interacts with the large amount of graphite, inducing a violent thermal stress effect (thermal expansion) inside the graphite particles, overcoming the van der Waals forces between the graphite layers, and causing the graphite sheets to peel off in situ.

[0039] The graphite-graphene powder separation device 5 is fixedly connected to the outlet of the sleeve 903 via the inlet flange of the V-shaped conveying pipe 1001. The first spiral pipe 1002 and the second spiral pipe 1003 are respectively fitted into the two pipes of the V-shaped conveying pipe 1001. The first filter screen 1004 and the second filter screen 1005 are respectively fixedly connected into the slots of the V-shaped conveying pipe 1001. The first spiral pipe 1002 and the first filter screen 1004, as well as the second spiral pipe 1003 and the second filter screen 1005, are all interference fits. The first spiral pipe 1002 is driven by the first filter screen 1004. 2. The servo motors 1006 of the second spiral tube 1003 are all fixed to the outer end of the V-shaped conveying tube 1001. The motor shafts are connected to the first spiral tube 1002 and the second spiral tube 1003 by keys. The holes of the first filter screen tube 1004 and the second filter screen tube 1005 placed inside the V-shaped conveying tube 1001 have a diameter 2cm smaller than the inner hole diameter of the V-shaped conveying tube 1001, leaving a 1cm gap. This allows the screened graphene to flow through the gap to the graphene outlet of the V-shaped conveying tube 1001. After the pulsed high current is fully applied, the resulting impact... The wave will feed the generated graphene and the remaining graphite powder into the V-shaped conveying pipe 1001 through the inlet. The servo motor 1006 drives the first spiral tube 1002 to transport the graphite / graphene powder through the first filter screen 1004 from the lower end to the upper end of the first spiral tube 1002. During this process, the first graphite / graphene powder separation occurs. The screened graphene will flow from the gap in the pipe to the graphene outlet of the V-shaped conveying pipe 1001. The graphite and a small amount of graphene powder remaining after the first screening will flow from the second spiral tube. The graphite is conveyed from right to left in the 1003, passing through the second filter screen 1005 for a second separation of graphite / graphene powder. The screened graphene will flow from the gap between the pipes to the graphene outlet of the V-shaped conveying pipe 1001. The remaining unscreened waste is mostly unreacted graphite and a small amount of graphene powder that does not meet the specifications. This waste is transported back to the stirring and molding device 3 through the second spiral tube 1003 for recycling. The entire preparation process is completed in a vacuum environment to achieve high-yield and high-purity nanoscale graphene production.

[0040] In summary, the present invention has the following beneficial effects:

[0041] This invention overcomes the bottleneck in high-purity graphene preparation by developing a complete set of equipment for large-scale graphene preparation based on high-current impact. The equipment utilizes the direct interaction of high current with a large quantity of graphite to induce intense thermal stress (thermal expansion) within the graphite particles, overcoming the van der Waals forces between graphite layers and enabling in-situ exfoliation of graphite sheets. A graphite-graphene powder separation device was also developed to obtain high-purity graphene. This new graphite / graphene powder separation technology effectively improves graphene yield, shortens preparation time, and reduces costs. The equipment only requires relatively inexpensive graphite powder as raw material and uses a strong current generated by boosting and rectifying alternating current as the energy source. Compared with other methods, pulsed high-current impact for graphene preparation is less costly and more suitable for large-scale graphene production. The equipment in this invention has fewer influencing factors in graphene preparation; the morphology of the graphene product can be controlled by adjusting parameters such as the pulsed current and the dielectric environment. The equipment does not introduce other substances during the graphene preparation process, resulting in high-purity graphene. The pulsed high current impact device of this invention does not produce harmful substances and is more green and environmentally friendly compared with other chemical methods.

[0042] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A pulsed high-current impact device for the cyclic mass production of high-purity graphene, characterized in that, The device includes a main unit cover, a quick-return six-bar linkage, a stirring and molding device, a pulsed high-current reaction device, and a graphite / graphene powder separation device. The main unit cover, the pulsed high-current reaction device, and the graphite / graphene powder separation device are sequentially and fixedly connected. The inlet of the stirring and molding device is located inside the main unit cover and below the feed inlet of the main unit cover. The outlet of the stirring and molding device is connected to the pulsed high-current reaction device. The quick-return six-bar linkage is located on the side of the main unit cover away from the pulsed high-current reaction device. One end of the graphite / graphene powder separation device is fixedly connected to the feed inlet of the main unit cover. The mixing and molding device includes a mixing servo motor, a drum, a worm gear assembly, a coupling, and a scraper. The drum is fixedly connected to the turbine near the graphite-graphene powder separation device via a keyway. Several semi-circular grooves are formed on the inner wall of the drum. The scraper is disposed inside the drum, with one end fixedly connected to the main cover and the other end slidably connected to the inner surface of the drum. The two ends of the coupling are respectively connected to the mixing servo motor and the worm gear assembly. The output shaft of the worm gear assembly is keyed to the center of the drum. The pulsed high-current reaction device includes a high-voltage electrode block, a constraint tube, a sleeve, a low-voltage electrode block, a high-voltage moving electrode, a low-voltage moving electrode, an insulating block, a low-voltage electrode needle, a spring, and a connecting electrode. The high-voltage electrode block and the constraint tube are fixedly connected to the sleeve from left to right. The low-voltage electrode block passes through the sleeve and the constraint tube, and protrudes 3-5mm in the constraint tube. The high-voltage moving electrode and the low-voltage moving electrode are respectively fixed to the insulating block. The right end of the low-voltage moving electrode is connected to the low-voltage electrode needle in a sliding pair. The low-voltage moving electrode and the low-voltage electrode needle are limited by a spring. The connecting electrode is respectively sleeved on the high-voltage moving electrode and the low-voltage moving electrode. The high-voltage moving electrode pushes the graphite rod in the groove of the roller through the central hole of the high-voltage electrode block into the constraint tube. When the right end of the graphite rod touches the low-voltage electrode block, the capacitors connected to the two connecting electrodes discharge. The large current directly interacts with the large amount of graphite, inducing a severe thermal stress effect inside the graphite particles, overcoming the van der Waals forces between the graphite layers, and causing the graphite sheets to peel off in situ.

2. The pulsed high-current impact device for the cyclic mass production of high-purity graphene as described in claim 1, characterized in that, The drive rod, first swing rod, L-shaped double swing rod, second swing rod, and sliding rod in the quick-return six-bar linkage are hinged together. One end of the drive rod and the first swing rod are respectively hinged to the L-shaped support plate. The body of the sliding rod is connected to the L-shaped support plate through a sliding joint. One end of the drive rod is keyed to the drive servo motor.

3. The pulsed high-current impact device for the cyclic mass production of high-purity graphene as described in claim 2, characterized in that, The length of the low-pressure moving electrode is 3 to 5 mm longer than the sum of the length of the high-pressure moving electrode and the thickness of the roller.

4. The pulsed high-current impact device for the cyclic mass production of high-purity graphene as described in claim 3, characterized in that, The feed inlet flange of the V-shaped conveying pipe of the graphite-graphene powder separation device is fixed to the discharge port of the sleeve. The first spiral pipe and the second spiral pipe are respectively installed in the two pipes of the V-shaped conveying pipe. The first filter screen and the second filter screen are also installed in the groove of the V-shaped conveying pipe.

5. The pulsed high-current impact device for the cyclic mass production of high-purity graphene as described in claim 4, characterized in that, The first spiral tube and the first filter screen tube are interference fit, the second spiral tube and the second filter screen tube are interference fit, and the diameter of the hole wall of the first filter screen tube and the second filter screen tube section placed in the V-shaped conveying pipe is 2cm smaller than the diameter of the inner wall of the V-shaped conveying pipe.

6. The pulsed high-current impact device for the cyclic mass production of high-purity graphene as described in claim 5, characterized in that, The graphite-graphene powder separation device is equipped with two drive servo motors, which are respectively connected to the first spiral tube and the second spiral tube.

7. The pulsed high-current impact device for the cyclic mass production of high-purity graphene as described in claim 6, characterized in that, The pulsed high-current reaction device is equipped with two connecting electrodes.

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