CN114046443B - Multi-platform profiling hydrogen storage device and manufacturing method of hydrogen storage sheet thereof - Google Patents
Multi-platform profiling hydrogen storage device and manufacturing method of hydrogen storage sheet thereof Download PDFInfo
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- CN114046443B CN114046443B CN202110880928.3A CN202110880928A CN114046443B CN 114046443 B CN114046443 B CN 114046443B CN 202110880928 A CN202110880928 A CN 202110880928A CN 114046443 B CN114046443 B CN 114046443B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C11/00—Use of gas-solvents or gas-sorbents in vessels
- F17C11/005—Use of gas-solvents or gas-sorbents in vessels for hydrogen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/006—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of flat products, e.g. sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/0005—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes
- C01B3/001—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes characterised by the uptaking medium; Treatment thereof
- C01B3/0078—Composite solid storage mediums, i.e. coherent or loose mixtures of different solid constituents, chemically or structurally heterogeneous solid masses, coated solids or solids having a chemically modified surface region
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/0005—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes
- C01B3/001—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes characterised by the uptaking medium; Treatment thereof
- C01B3/0084—Solid storage mediums characterised by their shape, e.g. pellets, sintered shaped bodies, sheets, porous compacts, spongy metals, hollow particles, solids with cavities, layered solids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
- B22F2007/042—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal characterised by the layer forming method
- B22F2007/047—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal characterised by the layer forming method non-pressurised baking of the paste or slurry containing metal powder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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Abstract
The invention discloses a multi-platform profiling hydrogen storage device and a manufacturing method of hydrogen storage plates thereof. The hydrogen release starting temperature is lower, the residual hydrogen storage capacity can be monitored according to the change of the air pressure, the hydrogen storage alloy can be ensured to be uniformly distributed all the time in the use process, the stress concentration caused by the local enrichment of the hydrogen storage alloy is avoided, the service life is prolonged, the filling is simple, and the hydrogen release starting method has good automation potential.
Description
Technical Field
The invention relates to the technical field of hydrogen storage, in particular to a multi-platform profiling hydrogen storage device and a manufacturing method of a hydrogen storage sheet thereof.
Background
Currently, three types of hydrogen storage methods are put into practical use: gaseous hydrogen storage, liquid hydrogen storage and solid hydrogen storage based on hydrogen storage alloys. Compared with other hydrogen storage modes, the solid-state hydrogen storage technology has the advantages of high hydrogen storage density, low pressure, good safety, high hydrogen purity and the like, and is an important direction of the development of the hydrogen storage technology. The solid hydrogen storage tank has a similar shape to the gaseous and liquid hydrogen storage tanks, except that the hydrogen storage tank is internally loaded with hydrogen storage alloy. At present, the defects of the alloy hydrogen storage device include:
(1) Hydrogen storage monitoring problem
When the hydrogen storage alloy releases hydrogen, a stable platform pressure exists, the characteristic determines that the pressure of the hydrogen is relatively stable in the use process of the solid hydrogen storage tank, the residual hydrogen storage amount in the hydrogen storage tank is difficult to monitor in real time through the change of the pressure, the follow-up phenomenon that the time for charging the hydrogen cannot be accurately arranged is that the phenomenon that the pressure of the hydrogen suddenly drops when the hydrogen in the hydrogen storage alloy is about to be used up, and the smooth hydrogen supply cannot be realized.
(2) The heat quantity of the hydrogen release start is higher
A large amount of heat needs to be absorbed during the hydrogen desorption process. For example, laNi5 hydrogen storage alloy material accompanies 30.8kJ/mol H during the hydrogen desorption process 2 Causing a sharp drop in the temperature of the material itself. The pressure of the hydrogen platform is rapidly reduced, and the hydrogen release speed and the air pressure are greatly reduced. When an external heat source is used for heating, the whole hydrogen storage tank needs longer heating time, and the hydrogen pressure is low in the heating process, so that the hydrogen cannot be smoothly supplied.
(3) The hydrogen absorption expansion of the hydrogen storage alloy generates stress on the hydrogen storage tank body
After the initial filling of the hydrogen storage alloy material is uneven or displacement is generated in the using process, local areas inside the hydrogen storage device of the hydrogen storage alloy material powder are enriched, and stress concentration of local areas of the hydrogen storage tank body is caused, so that the hydrogen storage tank body is more prone to plastic deformation in the areas until fracture and failure occur. Therefore, the even distribution of the hydrogen storage alloy material powder is ensured through the optimal design, which is the key for ensuring the safe use and prolonging the service life of the solid hydrogen storage tank.
In summary, how to develop a hydrogen storage tank with low starting heat requirement and monitoring hydrogen storage capacity, which is easy to assemble, and avoid deformation and failure of the hydrogen storage tank due to local enrichment of the hydrogen tank, has become a urgent problem to be solved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a multi-platform profiling hydrogen storage device, which comprises a hydrogen storage sheet 1, a hydrogen storage tank body 2, a filter sheet 3, a tank opening sealing head 4 and a valve 5, and is characterized in that the hydrogen storage sheet 1 is divided into three different platform pressure types of low pressure, medium pressure and high pressure, the hydrogen storage sheet 1 is of a regular and firm sheet structure which is directly filled into the hydrogen storage tank body 2, the hydrogen storage sheet 1 comprises a metal foil, a hydrogen storage alloy, a heat conducting agent and a binder, the filter sheet 3 is arranged in the tank opening sealing head 4 in advance, when the hydrogen storage sheet 1 is filled, the hydrogen storage sheets 1 of different platform pressures are stacked in sequence in a certain proportion, and then the tank opening sealing head 4 is welded and the valve 5 is arranged.
Preferably, the difference in the plateau pressure of the hydrogen storage sheet 1 of different plateau pressure types is not less than 0.2MPa at the same temperature.
Preferably, in the hydrogen storage sheet 1, the mass ratio of the hydrogen storage alloy material is 80% -95%, the mass ratio of the heat conductive agent is 1% -10%, the mass ratio of the binder is 2% -10%, and the thickness of the metal foil is 6-25 μm.
Preferably, the hydrogen storage sheet 1 is a regular round sheet, a regular hexagonal sheet, an octagonal sheet or a square sheet, the weight of the hydrogen storage sheet 1 is 5-150g, and the thickness of the hydrogen storage sheet 1 is 0.5-20mm.
Preferably, the hydrogen storage sheet 1 is a circular sheet; the weight of the hydrogen storage sheet 1 was an integer multiple of 5 g.
Preferably, in the hydrogen storage sheet 1, the hydrogen storage alloy material is titanium-based AB 2 AB type of titanium series and AB of rare earth series 3 AB of rare earth system 5 Solid solutions of titanium and vanadium, magnesium-based hydrogen storage alloys, complex hydrides, metal nitrogen hydrides or ammonia boronAny one or more of alkane; the heat conducting agent is one or more of graphene, crystalline flake graphite, carbon nano tube, mesophase carbon microsphere, aluminum oxide, magnesium oxide, zinc oxide, aluminum nitride, boron nitride or silicon carbide; the binder is one or more of polyvinylidene fluoride, polytetrafluoroethylene, styrene-butadiene rubber and carboxymethyl cellulose.
Preferably, the hydrogen storage tank body 2 is made of stainless steel or aluminum alloy; the length of the hydrogen storage tank body 2 is 50-200cm, the inner diameter is 5-20cm, and the filling number of the hydrogen storage sheets 1 in the hydrogen storage tank body 2 is 10-500; the filter sheet 3 is made of powder metallurgy sintered porous material or a metal wire screen structure.
Preferably, the hydrogen storage tank body 2 is made of 316L stainless steel or 6061 aluminum alloy; the filter 3 has a filtering accuracy of between 0.1 and 5 microns.
The present invention also provides a method for producing the hydrogen storage sheet 1, comprising the steps of:
s1, mixing materials
Adding hydrogen storage alloy powder, a heat conducting agent and a binder into mixing equipment at the same time, and obtaining premixed powder with uniform distribution in a batch mixing mode;
s2, pulping
Adding the uniformly premixed powder subjected to batch mixing in the step S1 into a solvent, and stirring and mixing to obtain uniform and stable slurry;
s3, coating and drying
Coating the slurry prepared in the step S2 on a metal foil, and drying to finally obtain a coiled hydrogen storage sheet 1;
s4, rolling
Rolling the rolled hydrogen storage sheet 1 in the step S3 to obtain a flat hydrogen storage sheet 1 with uniform thickness;
s5, slicing
And (4) cutting the flattened hydrogen storage sheet 1 in the step (S4) into the hydrogen storage sheets 1 with the same size by adopting a die cutting machine or a cutting machine.
Preferably, in step S1, the hydrogen storage alloy powder, the heat conductive agent and the binder need to be added simultaneously during the batch mixing process;
in the step S2, the premixed powder is added into a solvent with a certain mass in batches, and a double-planetary stirrer is adopted for stirring and mixing;
in the step S2, the selected solvent is one or a mixed solution of more than one of azomethyl pyrrolidone, isopropanol, ethanol or deionized water;
in the step S3, a transfer type or extrusion type coating machine is adopted to coat the sizing agent on the metal foil, and the sizing agent directly enters an oven for drying during drying;
in the step S6, the hydrogen storage sheets 1 are sequentially filled from bottom to top, and after the expected filling quantity is reached, the tank opening end socket is welded for sealing, and the tank opening end socket is welded with a filter sheet which can filter fine particles in the hydrogen storage tank body;
according to the steps S1-S5, the hydrogen storage sheet 1 with three different platform pressures of low pressure, medium pressure and high pressure is prepared in sequence.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a multi-platform profiling hydrogen storage device and a manufacturing method of hydrogen storage sheets thereof, which are characterized in that hydrogen storage alloy materials with different platform pressures, a heat conducting agent and a binder are uniformly stirred and dispersed respectively, hydrogen storage slurry is obtained by stirring, then the hydrogen storage sheets with different platform pressures are obtained by coating, drying and rolling, and then the hydrogen storage sheets with different platform pressures are filled into a hydrogen storage tank according to a certain proportion; the hydrogen release starting temperature of the high-platform-pressure hydrogen storage alloy material in the hydrogen storage tank is low, the rapid hydrogen release stage can be entered in a short time, and the hydrogen is preferentially released by the hydrogen storage sheet with relatively high platform pressure before the optimal hydrogen release temperature is reached, so that the use requirement is met. Along with the gradual rise of the temperature, the hydrogen storage sheet with relatively low platform pressure also starts to release hydrogen, and the temperature rising process is not required to be performed in advance in the starting process of the hydrogen storage tank; the hydrogen storage sheets with different platform pressures are sequentially subjected to hydrogen release, and the hydrogen storage sheets in the hydrogen storage tank are designed in advance from high to low to occupy different platform pressures respectively, so that the residual hydrogen amount in the hydrogen storage tank can be approximately obtained according to the change of the hydrogen pressure.
Drawings
FIG. 1 is a schematic diagram of a multi-platform profiling hydrogen storage tank according to the present invention.
The reference numerals in the drawings are:
1-hydrogen storage sheet, 2-hydrogen storage tank, 3-filter sheet, 4-tank mouth end socket and 5-valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention become more apparent, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiments described below, together with the words of orientation, are exemplary and intended to explain the invention and should not be taken as limiting the invention.
In one broad embodiment of the invention, a multi-platform profiling hydrogen storage device comprises a hydrogen storage sheet 1, a hydrogen storage tank body 2, a filter sheet 3, a tank opening sealing head 4 and a valve 5, and is characterized in that the hydrogen storage sheet 1 is divided into three different platform pressure types of low pressure, medium pressure and high pressure, the hydrogen storage sheet 1 is of a regular and firm sheet structure which is directly filled in the hydrogen storage tank body 2, the hydrogen storage sheet 1 comprises a metal foil, a hydrogen storage alloy, a heat conducting agent and an adhesive, the filter sheet 3 is arranged in the tank opening sealing head 4 in advance, when the hydrogen storage sheet 1 is filled, a plurality of hydrogen storage sheets 1 with different platform pressures are stacked in sequence according to a certain proportion, and then the tank opening sealing head 4 is welded and the valve 5 is arranged.
Preferably, the difference in the plateau pressure of the hydrogen storage sheet 1 of different plateau pressure types is not less than 0.2MPa at the same temperature.
Preferably, in the hydrogen storage sheet 1, the mass ratio of the hydrogen storage alloy material is 80% -95%, the mass ratio of the heat conductive agent is 1% -10%, the mass ratio of the binder is 2% -10%, and the thickness of the metal foil is 6-25 μm.
Preferably, the hydrogen storage sheet 1 is a regular round sheet, a regular hexagonal sheet, an octagonal sheet or a square sheet, the weight of the hydrogen storage sheet 1 is 5-150g, and the thickness of the hydrogen storage sheet 1 is 0.5-20mm.
Preferably, the hydrogen storage sheet 1 is a circular sheet; the weight of the hydrogen storage sheet 1 was an integer multiple of 5 g.
Preferably, in the hydrogen storage sheet 1, the hydrogen storage alloy material is titanium-based AB 2 AB type of titanium series and AB of rare earth series 3 AB of rare earth system 5 Any one or more of titanium vanadium solid solution, magnesium-based hydrogen storage alloy, coordination hydride, metal nitrogen hydride or ammonia borane; the heat conducting agent is one or more of graphene, crystalline flake graphite, carbon nano tube, mesophase carbon microsphere, aluminum oxide, magnesium oxide, zinc oxide, aluminum nitride, boron nitride or silicon carbide; the binder is one or more of polyvinylidene fluoride, polytetrafluoroethylene, styrene-butadiene rubber and carboxymethyl cellulose.
Preferably, the hydrogen storage tank body 2 is made of stainless steel or aluminum alloy; the length of the hydrogen storage tank body 2 is 50-200cm, the inner diameter is 5-20cm, and the filling number of the hydrogen storage sheets 1 in the hydrogen storage tank body 2 is 10-500; the filter sheet 3 is made of powder metallurgy sintered porous material or a metal wire screen structure.
Preferably, the hydrogen storage tank body 2 is made of 316L stainless steel or 6061 aluminum alloy; the filter 3 has a filtering accuracy of between 0.1 and 5 microns.
The present invention also provides a method for producing the hydrogen storage sheet 1, comprising the steps of:
s1, mixing materials
Adding hydrogen storage alloy powder, a heat conducting agent and a binder into mixing equipment at the same time, and obtaining premixed powder with uniform distribution in a batch mixing mode;
s2, pulping
Adding the uniformly premixed powder subjected to batch mixing in the step S1 into a solvent, and stirring and mixing to obtain uniform and stable slurry;
s3, coating and drying
Coating the slurry prepared in the step S2 on a metal foil, and drying to finally obtain a coiled hydrogen storage sheet 1;
s4, rolling
Rolling the rolled hydrogen storage sheet 1 in the step S3 to obtain a flat hydrogen storage sheet 1 with uniform thickness;
s5, slicing
And (4) cutting the flattened hydrogen storage sheet 1 in the step (S4) into the hydrogen storage sheets 1 with the same size by adopting a die cutting machine or a cutting machine.
Preferably, in step S1, the hydrogen storage alloy powder, the heat conductive agent and the binder need to be added simultaneously during the batch mixing process;
in the step S2, the premixed powder is added into a solvent with a certain mass in batches, and a double-planetary stirrer is adopted for stirring and mixing;
in the step S2, the selected solvent is one or a mixed solution of more than one of azomethyl pyrrolidone, isopropanol, ethanol or deionized water;
in the step S3, a transfer type or extrusion type coating machine is adopted to coat the sizing agent on the metal foil, and the sizing agent directly enters an oven for drying during drying;
in the step S6, the hydrogen storage sheets 1 are sequentially filled from bottom to top, and after the expected filling quantity is reached, the tank opening end socket is welded for sealing, and the tank opening end socket is welded with a filter sheet which can filter fine particles in the hydrogen storage tank body;
according to the steps S1-S5, the hydrogen storage sheet 1 with three different platform pressures of low pressure, medium pressure and high pressure is prepared in sequence.
The present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
A multi-platform profiling hydrogen storage device has the following specific manufacturing process and structure:
(1) Preparation of Hydrogen storage sheets 1 with different plateau pressures
Preparation of a low-pressure hydrogen storage sheet:
a hydrogen absorbing alloy powder (rare earth hydrogen absorbing alloy material with a room temperature hydrogen releasing plateau pressure of 0.2 MPa), a heat conductive agent and a binder were mixed at 88:7:5, carrying out batch mixing in a mass ratio; the hydrogen storage alloy powder of this embodiment is rare earth AB5 type, the heat conductive agent is graphene, the binder is polyvinylidene fluoride (PVDF), and the solvent is nitrogen methyl pyrrolidone (NMP for short). The low-pressure hydrogen storage sheet with the diameter of 80mm and the thickness of 2mm is prepared and obtained through the working procedures of homogenizing, coating, drying, rolling and cutting;
preparation of medium-pressure hydrogen storage tablet
A hydrogen absorbing alloy powder (titanium-based hydrogen absorbing alloy material having a room temperature hydrogen releasing plateau pressure of 0.8 MPa), a heat conductive agent, and a binder were mixed at 88:7:5, carrying out batch mixing in a mass ratio; the hydrogen storage alloy powder of this example is titanium AB2 type, the heat conductive agent is graphene, the binder is polyvinylidene fluoride (PVDF), and the solvent is nitrogen methyl pyrrolidone (NMP for short). The medium-pressure hydrogen storage sheet with the diameter of 80mm and the thickness of 2mm is prepared and obtained through the working procedures of homogenizing, coating, drying, rolling and cutting;
preparation of high-pressure hydrogen storage sheet
A hydrogen storage alloy powder (rare earth-calcium-titanium-nickel hydrogen storage alloy material with a room temperature hydrogen discharge platform pressure of 1.4 MPa), a heat conducting agent and a binder in 88:7:5, carrying out batch mixing in a mass ratio; the hydrogen storage alloy powder of this example is titanium AB2 type, the heat conductive agent is graphene, the binder is polyvinylidene fluoride (PVDF), and the solvent is nitrogen methyl pyrrolidone (NMP for short). The high-pressure hydrogen storage sheet with the diameter of 80mm and the thickness of 2mm is prepared and obtained through the working procedures of homogenizing, coating, drying, rolling and cutting;
(2) Structure of hydrogen storage tank 2
Referring to the structure of fig. 1, the hydrogen storage tank body 2 has a diameter of 10cm, a wall thickness of 3mm and a length of 70cm, hydrogen storage sheets 1 with different platform pressures are sequentially arranged in the hydrogen storage tank body, a tank opening sealing head 4 is welded at last, a valve 5 is arranged, and a filter sheet 3 is welded on the tank opening sealing head 4 in advance.
(3) Arrangement of the hydrogen storage sheet 1
The hydrogen storage sheets 1 are stacked and arranged in sequence from bottom to top, 10 low-pressure hydrogen storage sheets are firstly filled, the total height is 20cm, 10 medium-pressure hydrogen storage sheets are filled, the total height is 20cm, and finally 10 high-pressure hydrogen storage sheets are filled, and the total height is 20cm. Finally, 30 hydrogen storage sheets 1 were packed, and the height was about 60cm.
The hydrogen storage device is easy to fill and has no dust emission phenomenon. After repeated hydrogen charging and discharging cycles, the hydrogen storage tank body 2 has no abnormal deformation and has stable integral structure.
Example 2
A multi-platform profiling hydrogen storage device has the following specific manufacturing process and structure:
(1) Preparation of Hydrogen storage sheets 1 with different plateau pressures
Preparation of a low-pressure hydrogen storage sheet:
a hydrogen absorbing alloy powder (rare earth hydrogen absorbing alloy material with a room temperature hydrogen releasing plateau pressure of 0.6 MPa), a heat conductive agent and a binder were mixed at 88:7:5, carrying out batch mixing in a mass ratio; the hydrogen storage alloy powder of the embodiment is of a rare earth system AB5 type, the heat conducting agent is crystalline flake graphite, the binder is styrene butadiene rubber and sodium carboxymethylcellulose (SBR and CMC-Na), and the solvent is deionized water. The low-pressure hydrogen storage sheet with the diameter of 60mm and the thickness of 5mm is prepared and obtained through the working procedures of homogenizing, coating, drying, rolling and cutting;
preparation of medium-pressure hydrogen storage tablet
A hydrogen absorbing alloy powder (titanium-based hydrogen absorbing alloy material having a room temperature hydrogen releasing plateau pressure of 1.2 MPa), a heat conductive agent, and a binder were mixed at 88:7:5, carrying out batch mixing in a mass ratio; the hydrogen storage alloy powder of the embodiment is titanium AB2 type, the heat conductive agent is crystalline flake graphite, the binder is styrene butadiene rubber and sodium carboxymethylcellulose (SBR and CMC-Na), and the solvent is deionized water. The medium-pressure hydrogen storage sheet with the diameter of 60mm and the thickness of 5mm is prepared and obtained through the working procedures of homogenizing, coating, drying, rolling and cutting;
preparation of high-pressure hydrogen storage sheet
A hydrogen storage alloy powder (rare earth-calcium-nickel hydrogen storage alloy material with a room temperature hydrogen releasing platform pressure of 2.4 MPa), a heat conducting agent and a binder are mixed according to a proportion of 88:7:5, carrying out batch mixing in a mass ratio; the hydrogen storage alloy powder of the embodiment is rare earth-calcium-nickel Mm1-xCaxNi5 series, the heat conductive agent is crystalline flake graphite, the binder is styrene butadiene rubber and sodium carboxymethyl cellulose (SBR and CMC-Na), and the solvent is deionized water. The hydrogen storage sheet with the diameter of 60mm and the thickness of 5mm is prepared and obtained through the working procedures of homogenizing, coating, drying, rolling and cutting;
(2) Structure of hydrogen storage tank 2
Referring to the structure of fig. 1, the hydrogen storage tank body 2 has a diameter of 8cm, a wall thickness of 3mm and a length of 200cm, hydrogen storage sheets 1 with different platform pressures are sequentially arranged in the hydrogen storage tank body, a tank opening sealing head 4 is welded at last, a valve 5 is arranged, and a filter sheet 3 is welded on the tank opening sealing head 4 in advance.
(3) Arrangement of the hydrogen storage sheet 1
The hydrogen storage sheets 1 are sequentially stacked from bottom to top, the low-pressure hydrogen storage sheets, the medium-pressure hydrogen storage sheets and the high-pressure hydrogen storage sheets are respectively stacked in sequence, every three sheets are 1 group, and the hydrogen storage sheets are sequentially filled in the hydrogen storage tank body 2. 120 low-pressure hydrogen storage sheets, 120 medium-pressure hydrogen storage sheets and 120 high-pressure hydrogen storage sheets are arranged, and the total number of the hydrogen storage sheets is 120. Finally, 360 hydrogen storage sheets 1 were packed, and the total height was about 180cm.
The hydrogen storage device is easy to fill and has no dust emission phenomenon. After repeated hydrogen charging and discharging cycles, the hydrogen storage tank body 2 has no abnormal deformation and has stable integral structure.
Finally, it should be pointed out that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting. Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides a multi-platform profiling hydrogen storage device, includes hydrogen storage piece (1), hydrogen storage jar body (2), filter disc (3), jar mouth head (4) and valve (5), its characterized in that, hydrogen storage piece (1) divide into low pressure, middling pressure and three different platform pressure types of high pressure, hydrogen storage piece (1) are for directly filling in the regular firm sheet structure in hydrogen storage jar body (2), hydrogen storage piece (1) include metal foil, hydrogen storage alloy, heat-conducting agent and binder, filter disc (3) set up in jar mouth head (4) in advance, when filling hydrogen storage piece (1), stack in proper order a plurality of hydrogen storage piece (1) of different platform pressures at certain proportion after, weld jar mouth head (4) and install valve (5) again;
at the same temperature, the difference of the platform pressures of the hydrogen storage sheets (1) with different platform pressure types is not lower than 0.2MPa.
2. The multi-platform profiling hydrogen storage device according to claim 1, wherein in the hydrogen storage sheet (1), the mass ratio of the hydrogen storage alloy material is 80% -95%, the mass ratio of the heat conductive agent is 1% -10%, the mass ratio of the binder is 2% -10%, and the thickness of the metal foil is 6-25 μm.
3. The multi-platform profiling hydrogen storage device according to claim 1, wherein the hydrogen storage sheet (1) is a regular round sheet, a regular hexagonal sheet, an octagonal sheet or a square sheet, the weight of the hydrogen storage sheet (1) is 5-150g, and the thickness of the hydrogen storage sheet (1) is 0.5-20mm.
4. A multi-platform profiling hydrogen storage device according to claim 3, characterized in that the hydrogen storage sheet (1) is a circular sheet; the weight of the hydrogen storage sheet (1) is an integer multiple of 5 g.
5. The multi-platform profiling hydrogen storage device according to claim 1, wherein in the hydrogen storage sheet (1), the hydrogen storage alloy material is titanium series AB 2 AB type of titanium series and AB of rare earth series 3 AB of rare earth system 5 Any one or more of titanium vanadium solid solution, magnesium-based hydrogen storage alloy, coordination hydride, metal nitrogen hydride or ammonia borane; the heat conducting agent is one or more of graphene, crystalline flake graphite, carbon nano tube, mesophase carbon microsphere, aluminum oxide, magnesium oxide, zinc oxide, aluminum nitride, boron nitride or silicon carbide; the binder is one or more of polyvinylidene fluoride, polytetrafluoroethylene, styrene-butadiene rubber and carboxymethyl celluloseA mixed material.
6. The multi-platform profiling hydrogen storage device according to claim 1, wherein the hydrogen storage tank body (2) is made of stainless steel or aluminum alloy; the length of the hydrogen storage tank body (2) is 50-200cm, the inner diameter is 5-20cm, and the filling number of the hydrogen storage sheets (1) in the hydrogen storage tank body (2) is 10-500; the filter sheet (3) is made of powder metallurgy sintered porous material or a metal wire screen structure.
7. The multi-platform profiling hydrogen storage device according to claim 6, wherein the hydrogen storage tank body (2) is made of 316L stainless steel or 6061 aluminum alloy; the filtering precision of the filter disc (3) is between 0.1 and 5 micrometers.
8. The multi-platform profiling hydrogen storage device according to any one of claims 1-7, wherein the manufacturing method of the hydrogen storage sheet (1) comprises the steps of:
s1, mixing materials
Adding hydrogen storage alloy powder, a heat conducting agent and a binder into mixing equipment at the same time, and obtaining premixed powder with uniform distribution in a batch mixing mode;
s2, pulping
Adding the uniformly premixed powder subjected to batch mixing in the step S1 into a solvent, and stirring and mixing to obtain uniform and stable slurry;
s3, coating and drying
Coating the slurry prepared in the step S2 on a metal foil, and drying to finally obtain a coiled hydrogen storage sheet (1);
s4, rolling
Rolling the rolled hydrogen storage sheet (1) in the step S3 to obtain a flat hydrogen storage sheet (1) with uniform thickness;
s5, slicing
And (3) cutting the flattened hydrogen storage sheet (1) in the step S4 into the hydrogen storage sheets (1) with the same size by adopting a die cutting machine or a sheet cutting machine.
9. The multi-platform profiling hydrogen storage device according to claim 8, wherein,
in the step S1, hydrogen storage alloy powder, a heat conducting agent and a binder need to be synchronously added in the batch mixing process;
in the step S2, the premixed powder is added into a solvent with a certain mass in batches, and a double-planetary stirrer is adopted for stirring and mixing;
in the step S2, the selected solvent is one or a mixed solution of more than one of azomethyl pyrrolidone, isopropanol, ethanol or deionized water;
in the step S3, a transfer type or extrusion type coating machine is adopted to coat the sizing agent on the metal foil, and the sizing agent directly enters an oven for drying during drying;
in the step S6, the hydrogen storage sheets (1) are sequentially filled from bottom to top, and after the expected filling quantity is reached, the tank opening end socket is welded for sealing, and a filter sheet is welded on the tank opening end socket, so that fine particles in the hydrogen storage tank body can be filtered;
according to the steps S1-S5, the hydrogen storage sheets (1) with low pressure, medium pressure and high pressure and different platform pressures are respectively prepared in sequence.
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| CN115650157A (en) * | 2022-11-18 | 2023-01-31 | 四川大学 | High-heat-conductivity and high-stability hydrogen storage alloy bed body for hydrogen storage tank and preparation process |
| TWI838186B (en) * | 2023-03-24 | 2024-04-01 | 純萃材料股份有限公司 | Gas storage structure and gas storage device |
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