38 results about "Hydrogen exchange" patented technology

This invention relates to a hydrophobic catalyst, comprising: a hydrophobic support, the hydrophobic support comprising a ceramic matrix and a hydrophobic coating on the surface of the ceramic matrix, the hydrophobic coating comprising modified graphene oxide; an active metal supported on the hydrophobic support; wherein the ceramic matrix has a particle size greater than 5 mm, and the hydrophobic support has a particle size of 45 μm. 2 / g to 120m 2 / g BET specific surface area. Furthermore, this invention also relates to the use of hydrophobic catalysts in water-hydrogen exchange reactions.

The invention comprises a catalyst device (1) for hydrogen isotope exchange analysis, wherein the catalyst device (1) consists of a catalyst carrier (10) and a catalyst material (20) applied to a surface (12) of the carrier (10), wherein at least the carrier surface (12) consists of an inorganic material and the catalyst material is sputtered or electrodeposited on at least a part of the surface (12) of the carrier (10). The invention further pertains to a sample vessel (100) for hydrogen isotope exchange analysis, wherein the sample vessel (100) contains one or more catalyst devices (1) according to the invention, wherein a maximum outer diameter (D) of the catalyst device (1) is smaller than a minimum inner diameter (101) of an opening of the sample vessel (100) or of the sample vessel (100) itself. The invention also foresees a method of hydrogen isotope analysis employing the sample vessel (100) and the use of the catalyst device (1) in a method of hydrogen isotope analysis.

The invention relates to the technical field of unmanned forklifts, in particular to an unmanned forklift hydrogen changing device and system.The unmanned forklift hydrogen changing device comprises an unmanned forklift body, a forklift lifting frame is fixedly connected to one side of the unmanned forklift body, a telescopic pallet fork is slidably connected to one side of the forklift lifting frame, and a forklift control host is fixedly connected to the top of the unmanned forklift body; a radar navigation module is fixedly connected to the top of the forklift control host, a cantilever lifting appliance is slidably connected to the outer wall of the forklift lifting frame, a trolley lifting appliance is fixedly connected to the bottom of the cantilever lifting appliance, and a hydrogen storage box is fixedly connected to the bottom of the trolley lifting appliance; the unmanned forklift body drives the hydrogen storage tank to move to the position beside the unmanned forklift needing hydrogen supplement, the hydrogen exchange control host controls the air pressure detection assembly to conduct air pressure detection on the hydrogen cylinder, and after the air pressure detection of the hydrogen cylinder is normal, the hydrogen exchange control host can supplement new hydrogen for the hydrogen cylinder through the hydrogen supplement assembly; in this way, workers do not need to manually supplement hydrogen for the unmanned forklift.

The invention discloses a vehicle hydrogen exchange station facilitating rapid hydrogen tank replacement, and belongs to the technical field of hydrogen supply and replacement equipment. A vehicle hydrogen exchange station facilitating rapid hydrogen tank replacement comprises a hydrogen exchange station body and a plurality of hydrogen exchange boxes arranged in an array mode, a first support is fixedly installed on the inner wall of any hydrogen exchange box, a second support is arranged on one side of the first support, and a plurality of basic telescopic rods are arranged between the first support and the second support; one end of the basic telescopic rod is fixedly connected with the second support, and the telescopic end of the basic telescopic rod is fixedly connected with the first support. According to the vehicle hydrogen exchange station convenient for rapidly replacing the hydrogen tank, compared with a traditional mode that a pipe is intervened manually through a tool, and the process of inflating and replacing the hydrogen tank is more convenient and rapid, the hydrogen tank inflating efficiency and the tank replacing efficiency are improved through the design of the hydrogen exchange box, meanwhile, the convenience that a vehicle for replacing the hydrogen tank is replaced and moved at any time is met, and the vehicle hydrogen exchange station is convenient to use. And the replacement efficiency of the hydrogen tank is further improved.

The invention discloses a selective deuteration method of benzene and derivatives thereof, in a reaction system containing a catalyst, the benzene and the derivatives thereof are contacted and reacted with deuterium gas to generate deuterated compounds, and the deuterated compounds comprise benzyl methyl single deuterated products and / or benzene ring perdeuterated products; the catalyst is at least one of bulk-phase barium hydride and a supported catalyst; in the process, BaH2 loaded by a carrier with a large specific surface area is taken as a catalyst, and BaH2 is taken as a catalytic active center. The catalyst can catalyze hydrogen-deuterium exchange between deuterium gas and benzene and derivatives thereof under mild conditions, deuterium / hydrogen exchange sites can be selectively controlled at benzyl methyl sites, or a perdeuteration process of benzyl methyl and benzene ring sites is realized. The highest methyl deuteration rate can reach 95%, and the benzene ring deuteration rate can reach 92% or above.

The invention relates to the technical field of gas exchange stations, in particular to a plate trailer posture positioning system for a hydrogen refueling station, which comprises a bearing table, a steel framework is mounted on the top of the bearing table through bolts, a hydrogen exchange station cart is slidably arranged on the top of the steel framework, and a hydrogen exchange station trolley is slidably arranged on the inner side of the hydrogen exchange station cart. The hydrogen exchange device has the advantages that through cooperation of structures such as a hydrogen exchange cart and a hydrogen exchange trolley, the position of a hydrogen exchange structure can be flexibly adjusted through two sets of driving structures, and the hydrogen exchange device is convenient to use and high in practicability. The hydrogen exchange time is effectively shortened, the area is arranged on the top of the bearing table and used for temporarily storing the hydrogen exchange module, the hydrogen exchange module can be temporarily stored through the other half area of the top of the bearing table, carrying in the hydrogen exchange process is not needed, and the hydrogen exchange time is shortened.

1. The name of the design product: hydrogen exchange station (2). 2. The use of the design product: used for hydrogen refueling or hydrogen supply system replacement for hydrogen fuel cell electric vehicles. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

A cognitive symbolic execution system for hydrogen infrastructure is disclosed, enabling lawful, ethics-gated, and treaty-verifiable hydrogen generation, storage, and distribution. The system includes a symbolic cognition kernel, a consent-indexed actuator firewall, and a treaty DAG enforcing national, environmental, and humanitarian policy overlays. Every hydrogen molecule is tokenized with a post-quantum identity hash linked to oath-indexed usage intent and symbolic moral predicates. Human—AGI negotiation modules, EEG consent channels, and zero-knowledge arbitration protocols govern hydrogen flow, deferral, or rerouting. Hydrogen reactors, pipelines, and vehicles are granted activation only upon satisfaction of multi-party treaty conditions, emotional risk assessments, and symbolic affordance filters. A Merkle-secured narrative ledger records every action, enabling post-hoc audit, rollback, and jurisdictional override. Applications include battlefield treaty enforcement, civilian disaster routing, carbon-credit-bound storage, and AGI-governed global hydrogen exchange. This invention elevates hydrogen into a sovereign, symbolic agent substrate—capable of obeying ethics, negotiating policy, and executing only under verifiable, lawful cognition.

The invention relates to a power distribution network hydrogen scheduling method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the steps that after it is detected that a hydrogen scheduling operation starting condition is met at the current moment, a current receiver needing hydrogen in a power distribution network and a current supplier providing hydrogen are determined, wherein the current receiver and the current supplier are involved in the current hydrogen scheduling operation; obtaining multi-dimensional data of a current recipient at the current moment, wherein the multi-dimensional data at least comprises dimension data corresponding to a weather dimension, a traffic dimension and an electricity-hydrogen load dimension; based on the multi-dimensional data, the hydrogenation demand of the current recipient is determined through the trained hydrogen load prediction model; based on the hydrogenation demand, determining the hydrogen mutual aid amount between the current recipient and the current supplier, and determining a target transportation route between the current recipient and the current supplier by taking the minimum transportation time as an optimization target; and executing the current hydrogen scheduling operation based on the hydrogen mutual aid amount and the target transportation route, thereby improving the hydrogen scheduling accuracy of the power distribution network.

The present application provides a kind of hydrophobic catalyst for water-hydrogen exchange reaction, the hydrophobic catalyst includes: carrier, the carrier includes nickel foam and nitrogen-doped carbon layer grown in situ on the surface of the nickel foam, the nitrogen-doped carbon layer has porous structure;Active component, the active component is loaded on the nitrogen-doped carbon layer, the active component includes Pt;And hydrophobic component, the hydrophobic component is grafted on the nitrogen-doped carbon layer, the hydrophobic component includes fluorosilane.The hydrophobic catalyst of the present application has good hydrophobic property and catalytic activity.

The invention relates to the field of hydrogen exchange stations, and discloses a top hanging type three-channel hydrogen exchange station which comprises a bottom plate, a plurality of stand columns are fixedly connected to the top of the bottom plate, a supporting beam is fixedly connected to the tops of the stand columns, a light rail is installed on the top of the supporting beam, and a hydrogen exchange cart mechanism is arranged on the light rail. A hydrogen exchange cart mechanism is arranged on the top of the bottom plate, a hydrogen exchange trolley mechanism is arranged on the inner side of the hydrogen exchange cart mechanism, a grabbing mechanism is arranged below the hydrogen exchange trolley mechanism, a laser scanning assembly is arranged on the top of the bottom plate, a hydrogen storage box set is arranged on the top of the bottom plate, the hydrogen exchange cart mechanism comprises two bearing beams, and the two bearing beams are installed on a light rail. A vehicle and a hydrogen storage box set are accurately positioned through the laser scanning assembly, the system controls all mechanisms to cooperatively operate according to positioning information, the whole process from moving of a hydrogen exchange cart and a hydrogen exchange trolley to lifting grabbing of the grabbing mechanism is automatically completed, the hydrogen exchange efficiency is greatly improved, manual intervention is reduced, and the labor intensity and the operation risk are reduced.

This invention discloses a hydrogen exchange interface testing device, belonging to the technical field of testing devices. The hydrogen exchange interface testing device includes: a robotic arm, a tooling fixture, a gas supply pipeline, an exhaust pipeline, and an industrial control computer. The robotic arm is adapted to hold a first hydrogen exchange interface, the tooling fixture is adapted to hold a second hydrogen exchange interface, the gas supply pipeline is adapted to be connected to the first hydrogen exchange interface, and a gas supply valve is provided on the gas supply pipeline. The exhaust pipeline is adapted to be connected to the second hydrogen exchange interface, and an exhaust valve is provided on the exhaust pipeline. The industrial control computer can control the robotic arm to drive the first hydrogen exchange interface to insert and pull out the second hydrogen exchange interface. The industrial control computer can also control the opening and closing of the gas supply valve and the exhaust valve to simulate the actual use conditions of the first and second hydrogen exchange interfaces. The hydrogen exchange interface testing device is easy to use, has a high degree of automation, and can improve the efficiency of durability and reliability testing of the first and second hydrogen exchange interfaces.

A catalyst device 1 for hydrogen isotope exchange analysis, comprising a catalyst carrier 10, a catalyst material 20 applied to the surface of the carrier, wherein the carrier surface 12 at least is a

This application relates to the field of lithium-ion battery technology, and particularly to a cleaning method for cathode materials, modified cathode materials, and secondary batteries. A cleaning solution is prepared by mixing raw materials including a water-soluble electrolyte with water; the cathode material is then mixed with the cleaning solution to obtain the cleaned cathode material; wherein the water-soluble electrolyte contains at least two hydrophilic groups, and the pKa values ​​of the hydrophilic groups are either the same or different, ranging from 6 to 10. During the mixing process, the aqueous solvent dissolves residual alkali on the surface. The hydrophilic groups ionize in the aqueous solution to release at least two anions, which then form hydrated anions with a volume much larger than H+. + Multiple hydrated anions can be adsorbed onto the surface of the cathode material through electrostatic interactions. The significant steric hindrance effect of hydrated anions can significantly reduce H+. + The increased proximity to the cathode material surface suppresses lithium-hydrogen exchange and reduces capacity loss. Furthermore, it can form coordination bonds with the transition metal of the cathode material, improving the stability of the layered structure.

The application discloses a hydrogen exchange method of a mobile hydrogen exchange station, which comprises the following steps: system starting, positioning guidance, safety alignment, hydrogen exchange operation starting, safety detection and operation ending. The hydrogen exchange method of the mobile hydrogen exchange station disclosed by the application takes the mobile hydrogen exchange station main body as a benchmark, realizes synchronous positioning of the hydrogen vehicle and the operation vehicle, breaks the dependence of the traditional positioning mode on the fixed site and ground facilities, simultaneously simplifies the driver operation process, does not need manual accurate alignment, and only needs to drive into the operation area according to the guidance, so that the automatic positioning and hydrogen exchange operation can be completed, and the hydrogen exchange efficiency is greatly improved.

The invention discloses a ship hydrogen exchange station and a hydrogen exchange method in the technical field of ship hydrogen exchange. The ship hydrogen exchange station comprises a placement table, a portal frame, a conveying rail, a conveying device, a butt joint rail, a butt joint device and a hydraulic locking device. The end, close to one side of the ship, of the conveying rail is connected with the butt joint rail through a multi-degree-of-freedom hinge mechanism. In the process that the hydrogen fuel ship needs hydrogen exchange, firstly, the ship is berthed in a port, the hydraulic locking device is in butt joint with the ship and locks and limits the ship, the ship is prevented from shaking or moving by a large margin, then the position of the butt joint rail is adjusted through the hinge mechanism, the butt joint device can be smoothly connected with the ship, and hydrogen exchange is achieved. And then when the butt-joint rail is impacted by a ship and shakes, the butt-joint rail can move around the conveying rail through the hinge mechanism, when the impact and the shake borne by the butt-joint rail act on the hinge mechanism to move, the damping mechanism can buffer and absorb impact energy generated by movement of the butt-joint rail, and the impact of the ship shaking on the hinge mechanism is reduced.

A hydrogen tank support comprises at least two layers of supporting frames, the supporting frames are connected in the first direction, and a hydrogen tank containing space is formed between the supporting frames. Each layer of supporting frame is provided with a hoop frame, and the hoop frames are connected with the supporting frames in an assembled mode. The hydrogen tank containing space is formed through the supporting frames, the hoop frames are arranged on each layer of supporting frame, the hydrogen tanks are fixed through the hoop frames, meanwhile, the hydrogen tanks are protected through the frame structure, the risk that the hydrogen tanks are collided by the outside world is reduced, and the use safety of the hydrogen tanks is improved; meanwhile, the supporting frame is used for containing the multiple hydrogen tanks, the whole frame is located in any open site, the hydrogen tank replacement process is simplified by means of simple manual hoisting equipment such as a forklift or a truck, and compared with an automatic hydrogen replacement station needing electric control, the hydrogen tank replacement device is more practical and more suitable for hydrogen tank replacement under the emergency condition.

This application relates to a hydrophobic catalyst, comprising: a hydrophobic support comprising a modified PTFE support having a specific surface area of ​​7.00 m² / g to 12.00 m² / g and / or a porosity of 29% to 35%; and an active metal supported on the hydrophobic support, wherein the active metal has a mass content of 0.25 wt% to 2.0 wt% based on the total mass of the hydrophobic catalyst. Furthermore, this application also relates to the use of the hydrophobic catalyst in a water-hydrogen exchange reaction.

The invention belongs to the technical field of organic chemical synthesis, and provides a synthesis method of 4-substituted-1H-pyrazole-3-methyl formate. The method comprises the following steps: by utilizing the characteristic of thermodynamic stability of molecules, firstly introducing carboxyl to the 5-site of a pyrazole ring, and then carrying out deprotection along with intramolecular rearrangement and interconversion, so as to obtain 4-site functional group substituted 3-pyrazolecarboxylic acid, and automatically generating corresponding carboxylic acid methyl ester under the conditions of an acidic compound and methanol. The synthesis of the 4-substituted-1H-pyrazole-3-methyl formate is completed by taking various commercially available 4-substituted pyrazoles as initial raw materials through amino functional group protection, organic alkali hydrogen exchange, carbon dioxide carboxylation, deprotection, isomerization and esterification. The synthesis method disclosed by the invention is high in yield.

The present invention relates to sodium-hydrogen exchanger 3 (NHE3) inhibitor compounds of the Formula:to pharmaceutical compositions comprising the compound and to the use of the compound for the treatment of certain diseases associated with elevated sodium and / or phosphate levels.

This application relates to the field of dual-temperature water-hydrogen exchange technology, and provides a water-hydrogen exchange system. The system includes an enrichment water path, a deuterium-rich water output path, and multiple cascaded dual-temperature water-hydrogen exchange devices. Each dual-temperature water-hydrogen exchange device includes a first exchange unit, a second exchange unit, an intra-stage water path, and a first heater. The intra-stage water path has a branching node. The first exchange unit undergoes a water-hydrogen exchange reaction to generate depleted hydrogen gas and deuterium-rich water. The second exchange unit undergoes a water-hydrogen reaction to generate deuterium-rich hydrogen gas and depleted water. The intra-stage water path connects the outlet of the first exchange unit and the inlet of the second exchange unit. The first heater is located in the intra-stage water path and downstream of the branching node. The enrichment water path connects the branching node of the previous intra-stage water path and the inlet of the next-stage first exchange unit. The deuterium-rich water output path connects the branching node of the final intra-stage water path. By cascading multiple dual-temperature water-hydrogen exchange devices, the deuterium abundance of the deuterium-rich water product can be increased.

The invention discloses a vehicle hydrogen exchange intelligent control system based on risk identification, and relates to the technical field of automatic control and safety monitoring, the vehicle hydrogen exchange intelligent control system comprises a hydrogen exchange intelligent control platform, and the hydrogen exchange intelligent control platform is in communication connection with a hydrogen exchange interface sealing control unit, a hydrogen storage tank state monitoring unit and a hydrogen exchange data safety transmission unit. The sealing element pressure adjusting module of the hydrogen exchange interface sealing control unit starts the miniature air cylinder to carry out pressure fine adjustment when the sealing parameter exceeds the limit, and data is fed back to the automatic control algorithm to carry out parameter iterative optimization on the double-correlation model, so that closed-loop control logic is formed; compared with the prior art, the dynamic monitoring, real-time adjustment and continuous optimization of the sealing performance of the hydrogen exchange interface are realized, and compared with the prior art, the sealing reliability and adaptability of the hydrogen exchange interface can be improved, so that the problems that the sealing control of the existing hydrogen exchange interface is static setting, the sealing performance reduction caused by sealing piece abrasion and material aging is difficult to deal with can be solved. The risk of hydrogen leakage is easy to occur.

The invention relates to a ground rail type hydrogen exchange station, and relates to the field of automatic hydrogen exchange stations. The device comprises a track base and a plurality of groups of plate trailers arranged outside the track base in order, the track base comprises a container bottom plate and a cart track, the cart track is fixedly installed on the upper end face of the container bottom plate, a walking cart is installed on the cart track, and two groups of liftable laser scanning assemblies are symmetrically installed in the walking cart. A trolley track assembly is further horizontally arranged at the head of the walking cart, and a walking trolley is installed on the trolley track assembly. Through modularization processing of all the parts, the time for on-site manufacturing is effectively shortened, all the structures can be assembled in a factory, and efficient installation can be achieved only through on-site assembling. Moreover, the position of the hydrogen storage container can be quickly and accurately found through accurate positioning and scanning of the liftable laser scanning assembly and flexible movement of the walking cart and the walking trolley.

This invention discloses a P-type semiconductor, its preparation method, and an isotope battery, relating to the field of isotope battery technology. The P-type semiconductor comprises a P3HT conjugated polymer simultaneously doped with C-14 and H-3; and the P-type semiconductor uses diethyl malonate as the initial reactant, and obtains C-14-doped semiconductors through carboxylation, thiolation, and borate reactions. 14 C-thiophene borate ester 14 C-thiophene borate and poly(2-bromo-3-hexylthiophene) undergo a Suzuki coupling reaction to obtain a C-14-doped P3HT conjugated polymer. This C-14-doped P3HT conjugated polymer is then subjected to a tritium-hydrogen exchange reaction with tritium gas to obtain a C-14 and H-3-doped P3HT conjugated polymer. An isotope battery containing the C-14 and H-3-doped P3HT conjugated polymer is also disclosed. This invention provides a high-power, highly flexible isotope battery and a short-route, high-yield method for preparing P-type semiconductors.

The application relates to the technical field of double-temperature water hydrogen exchange, and provides a double-temperature water hydrogen exchange device, which comprises a first water hydrogen exchange unit, a second water hydrogen exchange unit and a gas-liquid separator. Deionized water and deuterium-rich hydrogen gas react in the first water hydrogen exchange unit to generate depleted hydrogen gas and deuterium-rich water, and the hydrogen gas and the deuterium-rich water react in the second water hydrogen exchange unit to generate deuterium-rich hydrogen gas and depleted water; the gas-liquid separator is provided with a first mixing cavity, a second mixing cavity, a gas collecting cavity, a liquid collecting cavity and a drainage pipeline which are interconnected, the deuterium-rich water in the first mixing cavity enters the liquid collecting cavity, the deuterium-rich hydrogen gas in the first mixing cavity enters a deuterium-rich hydrogen gas inlet, the drainage pipeline is used for discharging the deuterium-rich water in the liquid collecting cavity, the deuterium-rich hydrogen gas in the second mixing cavity enters the gas collecting cavity, and the deuterium-rich water in the second mixing cavity enters a deuterium-rich water inlet. The double-temperature water hydrogen exchange device provided by the application can enhance the separation effect of the deuterium-rich water and the deuterium-rich hydrogen gas and improve the production efficiency of the deuterium-rich water.

The invention relates to a top hanging type two-channel hydrogen exchange station, which relates to the technical field of hydrogen energy infrastructure, and comprises a central control unit, a laser positioning mechanism, a robot driving control system, a vehicle identification system and a communication interface. The robot driving control system comprises an X-direction driving mechanism, a Y-direction driving mechanism and a hoisting mechanism which respectively adopt a double-servo-motor friction transmission mode, a single-servo-motor friction transmission mode and a single-servo-motor control absolute value mode. The system realizes accurate positioning of the vehicle and the hydrogen storage module through a laser positioning full-closed-loop control technology, and the positioning accuracy is not greater than 5mm. The working process comprises the steps of vehicle pull-in identification, authentication data acquisition, vehicle unlocking, robot hydrogen exchange, hydrogen tank locking, vehicle self-inspection, payment, plate trailer hydrogen tank bin adjustment and the like. High-precision automatic replacement of the hydrogen storage module is achieved, full-process automatic control is achieved, the hydrogen exchange time is remarkably shortened, and the operation efficiency of a hydrogen exchange station is improved.

The embodiment of the invention provides a water sample receiving device, a sampling method and a double-temperature water-hydrogen exchange system. The water sample receiving device comprises a reaction unit, a liquid storage unit, a water path unit, a gas path unit and a cooling unit. The water path unit comprises a water path pipeline and a water path valve arranged on the water path pipeline, and the two opposite ends of the water path pipeline are communicated with the liquid phase outlet and the water path connector respectively to form a liquid phase flowing path from the reaction unit to the liquid storage unit. The gas path unit comprises a gas path pipeline and a gas path valve arranged on the gas path pipeline, and the two opposite ends of the gas path pipeline are communicated with the first gas path connector and the second gas path connector respectively to form a gas phase flowing path from the liquid storage unit to the reaction unit. The cooling unit is arranged at the liquid storage unit and is used for cooling the interior of the liquid storage unit, so that the temperature in the liquid storage unit is lower than that in the reaction unit. The water sample receiving device disclosed by the embodiment of the invention is relatively high in sampling safety.

The embodiment of the invention provides a double-temperature water-hydrogen exchange system which comprises a first water-hydrogen exchange unit, a second water-hydrogen exchange unit, a cooling unit and a heating unit, the cooling unit communicates with a deuterium-rich hydrogen inlet and a deuterium-rich water outlet, and the temperature in the cooling unit is lower than that in the second water-hydrogen exchange unit. The heating unit is respectively communicated with the deuterium-rich hydrogen outlet and the deuterium-rich water inlet, and the heating unit is communicated with the cooling unit, so that a deuterium-rich hydrogen flowing path which sequentially passes through the heating unit and the cooling unit is formed between the deuterium-rich hydrogen outlet and the deuterium-rich hydrogen inlet; a deuterium-rich water flowing path sequentially passing through the cooling unit and the heating unit is formed between the deuterium-rich water outlet and the deuterium-rich water inlet, and the temperature in the heating unit is higher than the temperature in the first water-hydrogen exchange unit and the temperature in the cooling unit. According to the double-temperature water-hydrogen exchange system, the deviation between the actual reaction temperature and the preset temperature in the water-hydrogen exchange unit can be reduced.

The utility model provides a modularized solid hydrogen storage system which comprises a hydrogen pipeline, and a plurality of hydrogen storage devices are arranged in parallel and convey hydrogen to the hydrogen pipeline through quick connectors respectively. The circulating water path is used for charging and discharging hydrogen to exchange heat energy for the plurality of hydrogen storage devices. The hydrogen supply device has the advantages of being reasonable in structural design, convenient to disassemble and assemble, high in module combinability and high in adaptability of hydrogen supply rate and capacity.

The invention relates to the technical field of lithium ion batteries, in particular to a cleaning method of a positive electrode material, a modified positive electrode material and a secondary battery. Preparing a cleaning solution from a raw material comprising a water-soluble electrolyte and water; mixing the positive electrode material with a cleaning solution to obtain a cleaned positive electrode material; wherein the water-soluble electrolyte contains at least two hydrophilic groups, and the pKa values of the hydrophilic groups are the same or different and are 6-10. During mixing treatment, residual alkali on the surface can be dissolved by a water solvent. At least two anions can be ionized from the hydrophilic group in an aqueous solution, then hydrated anions are formed, and the volume of the hydrated anions is far larger than that of H < + >. A plurality of hydrated anions can be adsorbed on the surface of the positive electrode material through electrostatic interaction, the probability that H < + > approaches the surface of the positive electrode material can be remarkably reduced due to the relatively large steric hindrance effect of the hydrated anions, lithium-hydrogen exchange is inhibited, and the capacity loss is reduced. And furthermore, coordination bonds can be formed with transition metal of the positive electrode material, so that the stability of the layered structure is improved.