Graphene-titanium alloy composite hydrogen storage device and its fabrication method

Abstract

The graphene-titanium alloy composite hydrogen storage device has a copper-plated or copper-nickel alloy-plated inner cavity with openings at both ends. One end is used to input carbon source gas (such as methane). The carbon source gas (such as methane) is decomposed into carbon and hydrogen at 900-1000℃. The carbon forms a graphene layer on the surface of the copper-plated or copper-nickel alloy-plated layer. The hydrogen produced by the decomposition is output from the other end.

Description

Technical Field

[0001] This invention relates to the field of graphene titanium alloy hydrogen storage devices. Background Technology

[0002] The existing Type III hydrogen storage device is made of aluminum alloy inner liner wrapped with carbon fiber, while the existing Type IV hydrogen storage device is made of plastic inner liner wrapped with carbon fiber.

[0003] No results have been found for metal hydrogen storage devices made by spinning arc-shaped ends and bottle mouths on both ends of titanium alloy round tubes, or for titanium alloy hydrogen storage devices with copper-plated or copper-nickel alloy-plated inner cavities, graphene layers chemically vapor-deposited on the surface of the copper-plated or copper-nickel alloy-plated surfaces, or graphene-titanium alloy composite hydrogen storage devices with a protective coating on the outer surface of the titanium alloy hydrogen storage device.

[0004] No metal hydrogen storage devices made by spinning arc-shaped ends and bottle mouths from titanium alloy round tubes have been found. The inner cavity of the titanium alloy gold hydrogen storage device is made of copper layer or copper-nickel alloy layer, the inner surface of the copper layer or copper-nickel alloy layer is coated with graphene coating layer, and the outer surface of the titanium alloy gold hydrogen storage device is coated with a protective layer of graphene titanium alloy composite hydrogen storage device. Summary of the Invention

[0005] The objectives of this invention are: 1. To fabricate a titanium alloy hydrogen storage device by spinning arc-shaped ends and a bottle mouth at both ends of a titanium alloy round tube. A copper layer or copper-nickel alloy layer is fabricated inside the titanium alloy hydrogen storage device, and a graphene layer is deposited on the surface of the inner titanium alloy hydrogen storage device using high-temperature chemical vapor deposition. This improves the strength, pressure resistance, and hydrogen corrosion resistance of the titanium alloy hydrogen storage device, enhances its safety performance, achieves high-pressure safe hydrogen storage, and extends its service life. 2. Fabricating a titanium alloy hydrogen storage device by spinning arc-shaped ends and a bottle mouth at both ends of a titanium alloy round tube is a simple process, easy to control in terms of quality, and has low manufacturing costs. 3. The titanium alloy round tube is spun into arc-shaped ends and bottle mouths at both ends. One end of the bottle mouth is used to input carbon source (methane) gas. Under high temperature conditions of 900-1000℃, the carbon source (methane) decomposes into carbon and hydrogen. The carbon is deposited on the surface of the copper layer or copper-nickel alloy layer to form a graphene layer. The generated hydrogen gas is discharged from the other end of the bottle mouth. This solves the problem that the hydrogen gas decomposed from the carbon source (methane) affects the density of carbon deposition on the surface of the copper layer or copper-nickel alloy layer, and improves the quality of the graphene layer. By controlling the input time of the carbon source (methane), single-layer graphene and multi-layer graphene can be obtained, enabling continuous production. 4. Under the alternating stress of hydrogen charging and output, titanium alloy hydrogen storage devices are prone to hydrogen accumulation in stress concentration areas, leading to hydrogen-induced cracking and reduced hydrogen corrosion resistance. Copper or copper-nickel alloys have excellent hydrogen corrosion resistance. Plating copper or copper-nickel alloys inside titanium alloy hydrogen storage devices solves the problem of hydrogen accumulation in stress concentration areas and hydrogen-induced cracking. In copper-nickel alloys, the addition of nickel forms a nickel solid solution structure, with nickel atoms uniformly distributed in the copper lattice, resulting in a denser structure that significantly enhances the stability and corrosion resistance of titanium alloy hydrogen storage devices. 5. Chemical vapor deposition (CVD) graphene has a dense two-dimensional structure and is theoretically impermeable to gas molecules (including hydrogen), forming a physical barrier that isolates hydrogen from the titanium alloy hydrogen storage device, maintaining its stability and corrosion resistance over a long period. 6. Titanium alloy round tubes are spun into arc-shaped ends and bottle mouths to create titanium alloy hydrogen storage devices. The inner cavity of these devices is made with a copper or copper-nickel alloy layer, and the surface of the inner titanium alloy hydrogen storage device is coated with a graphene layer. This improves the strength, compressive strength, and hydrogen corrosion resistance of the device, enhances its safety, enables high-pressure safe hydrogen storage, and extends its service life. The manufacturing process is simple, requires less equipment investment, and is cost-effective. 7. Single-layer graphene has a tensile strength of 130 MPa (200 times that of steel), which is 23-35 times that of carbon fiber. Under stress, the bond angles can reversibly bend, avoiding brittle fracture and enabling high-pressure safe hydrogen storage. 8. Graphene has a fatigue life exceeding 1 billion cycles under an average stress of 71 MPa, due to its structural elastic recovery ability, thus extending the service life of the hydrogen storage device. 9. Hydrogen atoms can be adsorbed on the graphene surface and fixed in the interface region by forming sp3C-H bonds, making it difficult for hydrogen to diffuse further into the matrix material and reducing the risk of hydrogen embrittlement.10. The high tensile strength of graphene combined with the high strength and impact resistance of titanium alloy hydrogen storage devices can significantly reduce the wall thickness, weight, and manufacturing cost of these devices, thereby reducing the weight of aircraft, vehicles, and ships and saving energy. 11. At a high temperature of 900-1000℃, a carbon source gas (such as methane) is introduced into the titanium alloy hydrogen storage device. Through the rotation and tumbling of the device, a uniform chemical vapor deposition graphene layer is formed in the copper or copper-nickel alloy layer within the inner cavity of the device.

[0006] This invention proposes a graphene-titanium alloy composite hydrogen storage device. The device is constructed by spinning arc-shaped ends and a bottle mouth onto a titanium alloy cylindrical tube. The inner cavity of the titanium alloy hydrogen storage device, with openings at both ends, is plated with a copper layer or a copper-nickel alloy layer. One opening is used to input a carbon source gas (such as methane). The carbon source gas (such as methane) is decomposed into carbon and hydrogen at 900-1000℃. The carbon forms a graphene layer on the surface of the copper or copper-nickel alloy layer. The hydrogen produced by the decomposition is output through the other opening. The outer surface of the titanium alloy hydrogen storage device is coated with a protective layer. Titanium alloy hydrogen storage device accessories are installed at the upper bottle mouth, and a titanium alloy hydrogen storage device sealant is installed at the lower bottle mouth to seal it.

[0007] The present invention proposes a graphene-titanium alloy composite hydrogen storage device, wherein the inner cavity of the titanium alloy hydrogen storage device is plated with a copper layer or a copper-nickel alloy layer, the surface of the copper layer or the copper-nickel alloy layer is coated with a graphene coating, and titanium alloy hydrogen storage device accessories are installed at the opening of the titanium alloy composite hydrogen storage device.

[0008] A further improvement of this invention is to spin arc-shaped ends and bottle mouths onto both ends of a titanium alloy round tube to form a titanium alloy hydrogen storage device.

[0009] A further improvement to this invention is: one end of a titanium alloy round tube is spun into an arc-shaped end and a bottle mouth, while the other end is sealed.

[0010] A further improvement of the present invention is to combine multiple graphene composite titanium alloy hydrogen storage devices with hydrogen transmission pipelines and valves to form a graphene composite titanium alloy hydrogen storage device group.

[0011] The improved solution of this invention is as follows: a sensor is installed on the graphene-titanium alloy composite hydrogen storage device, the sensor transmits the data collected by the graphene-titanium alloy composite hydrogen storage device to the control device, and the control device processes the information collected by the graphene-titanium alloy composite hydrogen storage device.

[0012] Fabrication method of graphene-titanium alloy composite hydrogen storage device: 1. Spin-curved arc-shaped ends and bottle mouths onto both ends of a titanium alloy round tube to form a titanium alloy hydrogen storage device; 2. Copper plating of the inner cavity of the titanium alloy hydrogen storage device; 3. Inserting the copper-plated titanium alloy hydrogen storage device into a chemical vapor deposition (CVD) graphene device; 4. Introducing hydrogen and argon or nitrogen gas for protection into the CVD graphene device, heating the titanium alloy hydrogen storage device to 600-1000℃, stabilizing the temperature, maintaining it for 20-40 minutes, and then stopping the introduction of protective gas; 5. Introducing a carbon source gas (such as methane) into one end of the titanium alloy hydrogen storage device at 900-1000℃. At high temperatures, the carbon source (methane) gas is decomposed into carbon and hydrogen. The carbon nucleates and gradually grows on the surface of the copper-plated layer inside the titanium alloy hydrogen storage device, forming a chemical vapor deposition graphene layer. The carbon source (methane) decomposed hydrogen is discharged from the other end of the titanium alloy hydrogen storage device. 6. The power is cut off, the methane gas is shut off, and a protective gas is introduced to purge the methane gas. The device is then cooled to room temperature under the protective gas environment to obtain the titanium alloy hydrogen storage device with the chemical vapor deposition graphene layer. 7. A protective layer is applied to the outer surface of the titanium alloy hydrogen storage device. 8. Titanium alloy hydrogen storage device accessories are installed at the upper end of the device, and a titanium alloy hydrogen storage device seal is installed at the lower end of the device.

[0013] Fabrication method of graphene-titanium alloy composite hydrogen storage device: 1. Spin-curved arc-shaped ends and bottle mouths onto both ends of a titanium alloy round tube to form a titanium alloy hydrogen storage device; 2. Copper-nickel alloy layer plated inside the titanium alloy hydrogen storage device; 3. The copper-nickel alloy plated titanium alloy hydrogen storage device is inserted into a chemical vapor deposition (CVD) graphene device; 4. Hydrogen and argon or nitrogen gas are introduced into the CVD graphene device for protection, and the titanium alloy hydrogen storage device is heated to 600-1000℃, stabilized, and maintained for 20-40 minutes, then the protective gas is stopped; 5. A carbon source gas (such as methane) is introduced into one end of the titanium alloy hydrogen storage device at a high temperature of 900-1000℃. The carbon source (methane) gas is cracked into carbon and hydrogen. The carbon nucleates and gradually grows on the surface of the copper-nickel alloy layer in the inner cavity of the titanium alloy hydrogen storage device and the inner cavity of the two spun arc-shaped ends, forming a chemical vapor deposition graphene layer. The decomposed hydrogen gas from the carbon source (methane) is discharged from the other end of the titanium alloy hydrogen storage device. 6. The power is cut off, the methane gas is shut off, and a protective gas is introduced to purge the methane gas. The device is cooled to room temperature under the protective gas environment to obtain the titanium alloy hydrogen storage device with the chemical vapor deposition graphene layer. 7. A protective layer is applied to the outer surface of the titanium alloy hydrogen storage device. 8. The titanium alloy hydrogen storage device accessories are installed at the upper end of the device, and the titanium alloy hydrogen storage device seal is installed at the lower end of the device.

[0014] Manufacturing method of graphene-titanium alloy composite hydrogen storage device: 1. Spin-form arc-shaped ends and bottle mouth of titanium alloy round tube; 2. Copper plating layer on inner cavity of titanium alloy round tube; 3. Graphene coating layer on copper plating layer of titanium alloy hydrogen storage device; 4. Protective layer on outer surface of titanium alloy hydrogen storage device; 5. Install titanium alloy hydrogen storage device accessories at bottle mouth.

[0015] Manufacturing method of graphene-titanium alloy composite hydrogen storage device: 1. Spin-form arc-shaped ends and bottle mouth of titanium alloy round tube; 2. Plate copper-nickel alloy layer on inner cavity of titanium alloy round tube; 3. Coat graphene coating layer on surface of copper-nickel alloy layer of titanium alloy hydrogen storage device; 4. Coat protective layer on outer surface of titanium alloy hydrogen storage device; 5. Install titanium alloy hydrogen storage device accessories at bottle mouth. Attached Figure Description

[0016] The combined hydrogen storage device of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0017] Figure 1 This is a cross-sectional structural diagram of a titanium alloy composite hydrogen storage device with a bidirectional open inner cavity, a copper-plated surface or a copper-nickel alloy-plated surface, and a graphene layer deposited by chemical vapor deposition.

[0018] Figure 2 This is a cross-sectional structural diagram of a combination device for chemical vapor deposition of graphene layers on the copper surface or copper-nickel alloy surface of the inner cavity of a titanium alloy composite hydrogen storage device with the technical features of this invention.

[0019] Figure 3 This is a cross-sectional structural diagram of a combined device with a graphene layer coated on the copper surface or copper-nickel alloy surface of the inner cavity of a bidirectional open titanium alloy composite hydrogen storage device, which has the technical features of this invention.

[0020] Figure 4 This is a cross-sectional structural diagram of a combined device with a graphene layer coated on the copper surface or copper-nickel alloy surface of the inner cavity of an open-end titanium alloy composite hydrogen storage device, which has the technical features of this invention. Example

[0021] A cross-sectional structural diagram of a bidirectional open-cavity copper surface chemical vapor deposition graphene layer titanium alloy composite hydrogen storage device is shown below. Figure 1 As shown, 1 is a bidirectional open titanium alloy hydrogen storage device, 2 is the upper arc surface, 3 is the upper bottle mouth, 4 is the lower arc surface, 5 is the lower bottle mouth, 6 is a copper-plated layer or a copper-nickel alloy-plated layer, 7 is the inner cavity graphene layer, 8 is the outer protective layer, 9 is hydrogen, 10 is the end seal, 11 is the hydrogen valve, 12 is the hydrogen valve connecting column, 13 is the hydrogen valve hydrogen channel, 14 is the hydrogen input device, 15 is the hydrogen input shut-off valve, 16 is the hydrogen output device, 17 is the hydrogen output shut-off valve, 18 is the sensor transmitting device, and 19 is the sensor probe.

[0022] A titanium alloy composite hydrogen storage device with an inner graphene layer deposited by chemical vapor deposition is fabricated. A bidirectional open titanium alloy hydrogen storage device 1 is fabricated by spinning a titanium alloy tube. The upper arc surface 2 and upper bottle mouth 3 of the bidirectional open titanium alloy hydrogen storage device 1 are located at the top of the device. The lower arc surface 4 and lower bottle mouth 5 of the device are located at the bottom. A copper-plated or copper-nickel alloy-plated layer 6 is placed inside the bidirectional open titanium alloy hydrogen storage device 1. A graphene layer 7 is chemically vapor-deposited on the surface of the copper-plated or copper-nickel alloy-plated layer 6. The lower bottle mouth 5 is filled and sealed with an end seal 10. A hydrogen valve 11 is installed inside the upper bottle mouth 3. The connecting column 12 is threaded and sealed to the upper bottle opening 3. The hydrogen valve hydrogen channel 14 is connected to the inner cavity of the titanium alloy hydrogen storage device 1. The hydrogen input device 14 is installed in the input hole of the hydrogen valve 11. The hydrogen input shut-off valve 15 opens and closes the hydrogen input device 14. The hydrogen output device 16 is installed in the output hole of the hydrogen valve 11. The hydrogen input shut-off valve 17 opens and closes the hydrogen output device 16. The sensor probe 19 detects the hydrogen 9 information in the cavity of the bidirectional open copper hydrogen storage device 1. The sensor transmitting device 18 sends the information detected by the sensor probe 19 to the control device. The control device processes the information accordingly.

[0023] The copper-nickel alloy in this embodiment includes: 90% copper and 10% nickel, 80% copper and 20% nickel, 70% copper and 30% nickel, with the preferred technical solution being 90% copper and 10% nickel. Example

[0024] A cross-sectional structural diagram of a titanium alloy composite hydrogen storage device with a copper surface or copper-nickel alloy surface coated with a graphene layer via chemical vapor deposition is shown below. Figure 2 As shown, 20 is a bidirectional open titanium alloy hydrogen storage device, 21 is the upper arc surface, 22 is the upper bottle opening, 23 is the lower arc surface, 24 is the lower bottle opening, 25 is the inner cavity copper layer or copper-nickel alloy layer, 26 is the inner cavity of the bidirectional open titanium alloy hydrogen storage device, 27 is the mixture of carbon and hydrogen from methane cracking at a high temperature of 900-1000℃, 28 is the graphene layer, 29 is the electric heating device, 30 is the thermal radiation line, 31 is the methane gas inlet device, 32 is the methane gas inlet channel, 33 is the hydrogen gas outlet device, 34 is the hydrogen gas outlet channel, and 35 is the base.

[0025] When fabricating a titanium alloy hydrogen storage device with an inner copper layer or copper-nickel alloy layer surface chemical vapor deposition inner graphene layer, a methane gas inlet device 31 is installed into the upper bottle opening 22, and a hydrogen gas outlet device 32 is installed into the lower bottle opening 24. The methane gas inlet device 31 and the hydrogen gas outlet device 33 are mounted on a base 35, and a motor drives the bidirectional open titanium alloy hydrogen storage device 20 to rotate.

[0026] Hydrogen and argon or nitrogen are introduced into the chemical vapor deposition graphene device for protection. The bidirectional open titanium alloy hydrogen storage device is heated to 20 to 600-1000℃, the temperature is stabilized, and the protective gas is stopped after 20-40 minutes.

[0027] Methane gas enters the inner cavity 26 of the bidirectional open titanium alloy hydrogen storage device through the methane gas inlet channel 32. The electric heating device 29 heats the bidirectional open titanium alloy hydrogen storage device 20 through thermal radiation line 30. When the methane gas in the inner cavity 26 of the bidirectional open titanium alloy hydrogen storage device reaches 900-1000℃, the methane gas decomposes into carbon and hydrogen. The carbon is deposited on the surface of the copper layer or copper-nickel alloy layer in the inner cavity of the titanium alloy hydrogen storage device to form a graphene layer, and the hydrogen is discharged through the hydrogen discharge channel 34.

[0028] When a graphene layer is formed on the surface of the copper layer or copper-nickel alloy layer inside the titanium alloy hydrogen storage device, the power supply is cut off, the methane gas is shut off, a protective gas is introduced to purge the methane gas, and the device is cooled to room temperature under the protective gas environment, thus obtaining a titanium alloy hydrogen storage device with a graphene layer covering the surface of the copper layer or copper-nickel alloy layer inside the hydrogen storage device. Example

[0029] A cross-sectional view of the combined structure of a two-way open titanium alloy composite hydrogen storage device with a graphene layer coated on the copper surface or copper-nickel alloy surface of the inner cavity is shown below. Figure 3 As shown, 36 is a bidirectional open titanium alloy hydrogen storage device, 37 is the upper arc surface, 38 is the upper bottle opening, 39 is the lower arc surface, 40 is the lower bottle opening, 41 is a copper plating layer or a copper-nickel alloy plating layer, 42 is a graphene coating layer, 43 is an outer protective layer, 44 is hydrogen, 45 is an end seal, 46 is a hydrogen valve, 47 is a hydrogen valve connecting column, 48 is a hydrogen valve hydrogen channel, 49 is a hydrogen input device, 50 is a hydrogen input shut-off valve, 51 is a hydrogen output device, 52 is a hydrogen output shut-off valve, 53 is a sensor transmitting device, and 54 is a sensor probe.

[0030] A titanium alloy composite hydrogen storage device with an inner graphene layer deposited by chemical vapor deposition is fabricated. A bidirectional open titanium alloy hydrogen storage device 36 is fabricated by spinning a titanium alloy tube. The upper arc surface 37 and upper bottle mouth 38 of the bidirectional open titanium alloy hydrogen storage device 36 are located at the top of the device, while the lower arc surface 39 and lower bottle mouth 40 are located at the bottom. A copper-plated or copper-nickel alloy-plated layer 41 is placed inside the bidirectional open titanium alloy hydrogen storage device 36. A graphene coating layer 42 is applied to the surface of the copper-plated or copper-nickel alloy-plated layer 41. The lower bottle mouth 40 is filled and sealed with an end seal 45. A hydrogen valve 46 is installed inside the upper bottle mouth 38. The hydrogen valve connecting column 47 is threaded and sealed to the upper bottle opening 48. The hydrogen valve hydrogen channel 49 is connected to the inner cavity of the titanium alloy hydrogen storage device 36. A hydrogen input device 49 is installed in the input hole of the hydrogen valve 1. The hydrogen input shut-off valve 50 opens and closes the hydrogen input device 49. A hydrogen output device 51 is installed in the output hole of the hydrogen valve 46. The hydrogen input shut-off valve 52 opens and closes the hydrogen output device 51. The sensor probe 54 detects the hydrogen 9 information in the cavity of the bidirectional open copper hydrogen storage device 1. The sensor transmitting device 18 sends the information detected by the sensor probe 19 to the control device. The control device processes the information accordingly. Example

[0031] A cross-sectional view of the combined structure of a titanium alloy composite hydrogen storage device with graphene coating on the copper or copper-nickel alloy surface inside the cavity is shown below. Figure 4 As shown, 55 is a bidirectional open titanium alloy hydrogen storage device, 56 is the upper arc surface, 57 is the upper bottle mouth, 58 is the lower arc surface, 59 is a copper plating layer or a copper-nickel alloy plating layer, 60 is a graphene coating layer, 61 is an outer protective layer, 62 is hydrogen, 63 is a hydrogen valve, 64 is a hydrogen valve connecting column, 65 is a hydrogen valve hydrogen channel, 66 is a hydrogen input device, 67 is a hydrogen input shut-off valve, 68 is a hydrogen output device, 69 is a hydrogen output shut-off valve, 70 is a sensor transmitting device, and 71 is a sensor probe.

[0032] A composite titanium alloy hydrogen storage device is fabricated by coating the inner cavity of a copper or copper-nickel alloy layer with a graphene layer. A titanium alloy tube is spun to fabricate a one-end open titanium alloy hydrogen storage device 55. The upper arc surface 56 and upper bottle mouth 57 of the one-end open copper hydrogen storage device 55 are located on the upper part of the two-way open titanium alloy hydrogen storage device 55, and the lower arc surface 58 of the titanium alloy hydrogen storage device 55 is located on the lower part of the two-way open titanium alloy hydrogen storage device 55. The inner cavity of the two-way open titanium alloy hydrogen storage device 55 is plated with a copper or copper-nickel alloy layer 59, and the surface of the copper or copper-nickel alloy layer 59 is coated with a graphene coating layer 60. A hydrogen valve 63 is installed inside the upper bottle mouth 57, and a hydrogen valve connecting column is provided. 64 is threaded and sealed to the upper bottle opening 57. The hydrogen valve hydrogen channel 65 is connected to the inner cavity of the titanium alloy hydrogen storage device 55. A hydrogen input device 66 is installed in the hydrogen valve input hole. The hydrogen input shut-off valve 67 opens and closes the hydrogen input device 66. A hydrogen output device 68 is installed in the hydrogen valve output hole. The hydrogen input shut-off valve 69 opens and closes the hydrogen output device 68. The sensor probe 71 detects the hydrogen 62 information in the cavity of the bidirectional open copper hydrogen storage device. The sensor transmitting device 70 sends the information detected by the sensor probe 71 to the control device. The control device processes the information accordingly.

Claims

1. A graphene-titanium alloy composite hydrogen storage device, comprising a titanium alloy hydrogen storage bottle, a copper layer, graphene, a hydrogen storage device accessory, a sensor, and an outer protective layer, characterized in that: The titanium alloy hydrogen storage device with openings at both ends has a copper-plated or copper-nickel-plated inner cavity. A carbon source gas (such as methane) is introduced into the opening at one end. The carbon source gas (such as methane) is decomposed into carbon and hydrogen at 900-1000℃. The carbon forms a graphene layer on the surface of the copper-plated or copper-nickel-plated layer. The hydrogen produced by the decomposition is output from the other opening.

2. A graphene-titanium alloy composite hydrogen storage device, comprising a titanium alloy hydrogen storage bottle, a copper-nickel alloy layer, graphene, a hydrogen storage device accessory, a sensor, and an outer protective layer, characterized in that: The inner cavity of the titanium alloy hydrogen storage device is plated with a copper layer or a copper-nickel alloy layer, and the surface of the copper layer or copper-nickel alloy layer is coated with a graphene coating. The opening of the titanium alloy composite hydrogen storage device is equipped with titanium alloy hydrogen storage device accessories.

3. The graphene-titanium alloy composite hydrogen storage device as described in claim 1 or 2, characterized in that: A titanium alloy hydrogen storage device is made by spinning arc-shaped ends and bottle mouths onto both ends of a titanium alloy round tube.

4. The graphene-titanium alloy composite hydrogen storage device as described in claim 1 or 2, characterized in that: One end of the titanium alloy round tube is spun into an arc-shaped end and bottle mouth, while the other end is sealed.

5. The graphene-titanium alloy composite hydrogen storage device as described in claim 1 or 2, characterized in that: Multiple graphene-composite titanium alloy hydrogen storage devices are combined with hydrogen transmission pipelines and valves to form a graphene-composite titanium alloy hydrogen storage device group.

6. The graphene-titanium alloy composite hydrogen storage device as described in claim 1 or 2, characterized in that: graphene... Sensors are installed on the titanium alloy composite hydrogen storage device. The sensors transmit the data collected by the graphene titanium alloy composite hydrogen storage device to the control device, which processes the information collected by the graphene titanium alloy composite hydrogen storage device.

7. Fabrication Method of Graphene-Titanium Alloy Composite Hydrogen Storage Device:

1. Spin-curved arc-shaped ends and bottle mouths onto both ends of a titanium alloy round tube to form a titanium alloy hydrogen storage device; 2. Copper plating of the inner cavity of the titanium alloy hydrogen storage device; 3. Inserting the copper-plated titanium alloy hydrogen storage device into a chemical vapor deposition (CVD) graphene device; 4. Introducing hydrogen and argon or nitrogen gas for protection into the CVD graphene device, heating the titanium alloy hydrogen storage device to 600-1000℃, stabilizing the temperature, maintaining it for 20-40 minutes, and then stopping the introduction of protective gas; 5. Introducing a carbon source gas (such as methane) into one end of the titanium alloy hydrogen storage device at 900-1000℃. At a high temperature of ℃, the carbon source (methane) gas is decomposed into carbon and hydrogen. The carbon nucleates and gradually grows on the surface of the copper-plated layer inside the titanium alloy hydrogen storage device, forming a chemical vapor deposition graphene layer. The carbon source (methane) decomposed hydrogen is discharged from the other end of the titanium alloy hydrogen storage device.

6. The power supply is cut off, the methane gas is shut off, and a protective gas is introduced to purge the methane gas. The device is cooled to room temperature under the protective gas environment to obtain the titanium alloy hydrogen storage device with the chemical vapor deposition graphene layer.

7. A protective layer is applied to the outer surface of the titanium alloy hydrogen storage device.

8. The titanium alloy hydrogen storage device accessories are installed at the upper bottle opening, and the titanium alloy hydrogen storage device seal is installed at the lower bottle opening.

8. Fabrication method of graphene-titanium alloy composite hydrogen storage device:

1. Spin-curved arc-shaped ends and bottle mouths of titanium alloy round tubes to form a titanium alloy hydrogen storage device; 2. Copper-nickel alloy layer plated inside the titanium alloy hydrogen storage device; 3. The copper-nickel alloy plated titanium alloy hydrogen storage device is inserted into a chemical vapor deposition (CVD) graphene device; 4. Hydrogen and argon or nitrogen gas are introduced into the CVD graphene device for protection, the titanium alloy hydrogen storage device is heated to 600-1000℃, the temperature is stabilized and maintained for 20-40 minutes, then the protective gas is stopped; 5. A carbon source gas (such as methane) is introduced into one end of the titanium alloy hydrogen storage device at a high temperature of 900-1000℃. The carbon source (methane) gas is cracked into carbon and hydrogen. The carbon nucleates and gradually grows on the surface of the copper-nickel alloy layer in the inner cavity of the titanium alloy hydrogen storage device and the inner cavity of the two spun arc-shaped ends, forming a chemical vapor deposition graphene layer. The hydrogen gas decomposed from the carbon source (methane) is discharged from the other end of the titanium alloy hydrogen storage device.

6. The power is cut off, the methane gas is turned off, and a protective gas is introduced to purge the methane gas. The device is cooled to room temperature under the protective gas environment to obtain a titanium alloy hydrogen storage device with a chemical vapor deposition graphene layer.

7. A protective layer is applied to the outer surface of the titanium alloy hydrogen storage device.

8. The titanium alloy hydrogen storage device accessories are installed at the upper end of the device, and the titanium alloy hydrogen storage device seal is installed at the lower end of the device.

9. Manufacturing method of graphene-titanium alloy composite hydrogen storage device:

1. Spin-form arc-shaped ends and bottle mouth of titanium alloy round tube; 2. Copper plating layer on inner cavity of titanium alloy round tube; 3. Graphene coating layer on copper plating layer of titanium alloy hydrogen storage device; 4. Protective layer on outer surface of titanium alloy hydrogen storage device; 5. Install titanium alloy hydrogen storage device accessories at bottle mouth.

10. Manufacturing method of graphene-titanium alloy composite hydrogen storage device:

1. Spin-form arc-shaped ends and bottle mouth of titanium alloy round tube; 2. Plate copper-nickel alloy layer in inner cavity of titanium alloy round tube; 3. Coat graphene coating layer on surface of copper-nickel alloy layer of titanium alloy hydrogen storage device; 4. Coat protective layer on outer surface of titanium alloy hydrogen storage device; 5. Install titanium alloy hydrogen storage device accessories at bottle mouth.

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