WO2007110956A1 - Cartouche pour pile à combustible, procédé pour la produire et système de pile à combustible - Google Patents

Cartouche pour pile à combustible, procédé pour la produire et système de pile à combustible Download PDF

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Publication number
WO2007110956A1
WO2007110956A1 PCT/JP2006/306544 JP2006306544W WO2007110956A1 WO 2007110956 A1 WO2007110956 A1 WO 2007110956A1 JP 2006306544 W JP2006306544 W JP 2006306544W WO 2007110956 A1 WO2007110956 A1 WO 2007110956A1
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WO
WIPO (PCT)
Prior art keywords
fuel cell
elastic layer
cell cartridge
layer
elastic
Prior art date
Application number
PCT/JP2006/306544
Other languages
English (en)
Japanese (ja)
Inventor
Fumio Takei
Akio Yano
Original Assignee
Fujitsu Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2006/306544 priority Critical patent/WO2007110956A1/fr
Priority to JP2008507338A priority patent/JP5024285B2/ja
Publication of WO2007110956A1 publication Critical patent/WO2007110956A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • H01M8/04208—Cartridges, cryogenic media or cryogenic reservoirs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04186—Arrangements for control of reactant parameters, e.g. pressure or concentration of liquid-charged or electrolyte-charged reactants
    • 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
    • Y02E60/50—Fuel cells

Definitions

  • the present invention relates to a fuel cell cartridge, a manufacturing method thereof, and a fuel cell system, and more particularly to a simple and inexpensive fuel cell cartridge, a manufacturing method thereof, and a fuel cell system using the fuel cell cartridge.
  • Lithium-ion batteries have achieved high driving voltage and battery capacity at the beginning of commercialization, and their performance has been improved with the progress of portable information devices.
  • a fuel cell has attracted attention as a new energy device that replaces a lithium ion battery.
  • supplying fuel to the negative electrode generates electrons and protons, and electricity is generated by reacting the generated protons with oxygen supplied to the positive electrode.
  • the fuel of the fuel cell is stored in a fuel cell cartridge provided separately from the power generation unit.
  • a fuel cell cartridge provided separately from the power generation unit.
  • a powerful fuel cell cartridge has been proposed in, for example, Patent Documents 1 and 2.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2004-319388
  • Patent Document 2 JP 2005-29046 A
  • the proposed fuel cell cartridge is largely a large-scale supply of fuel to the power generation section using a pump or the like, and is small in size, light weight and low cost. The request could not be satisfied.
  • An object of the present invention is to provide a simple and inexpensive fuel cell cartridge, a method for producing the same, and a fuel cell system using the fuel cell cartridge.
  • a fuel cell cartridge comprising: a storage portion made of an elastic body that stores liquid fuel; and a separator provided inside the storage portion.
  • a fuel cell system that generates power with liquid fuel, a storage portion having elastic body force for storing liquid fuel; and a separator provided inside the storage portion
  • a fuel cell system is provided, which is connected to a fuel cell cartridge having the above structure and is supplied with a liquid fuel stored in the fuel cell cartridge.
  • a fuel is connected between the first elastic layer and a peripheral portion of the first elastic layer, and between the first elastic layer.
  • the second elastic body layer forming a space for storing water, a region of the first elastic body layer excluding the peripheral portion, and a region of the second elastic body layer excluding the peripheral portion. It has a separator provided, and a tube attached so that one end reaches a space formed between the first elastic layer and the second elastic layer.
  • a fuel cell cartridge is provided.
  • a step of placing a separator on a region excluding a peripheral portion of the first elastic body layer, the first elastic body layer, and the separator A step of providing a second elastic layer that is connected to a peripheral portion of the first elastic layer and forms a space for storing fuel between the first elastic layer and the first elastic layer; And a step of attaching a tube so that one end reaches a space formed between one elastic body layer and the second elastic body layer.
  • the peripheral edge of the first elastic layer and the peripheral edge of the second elastic layer are connected to each other, and the region excluding the peripheral edge of the first elastic layer and the first Since the non-adhesive separator is provided between the elastic layer and the region excluding the peripheral edge of the second elastic layer, the first elastic layer and the second elastic layer separated by the separator are provided.
  • Fuel can be stored in the formed space. Since the first elastic layer and the second elastic layer attempt to return to the state before the fuel is stored, the fuel is discharged to the outside through the tube with a certain pressure. Therefore, according to the present invention, it is possible to provide a simple and inexpensive fuel cell cartridge capable of discharging fuel at a certain pressure without using a large component such as a pump.
  • FIG. 1 is a conceptual diagram showing a basic configuration of a fuel cell system.
  • FIG. 2 is a cross-sectional view and a plan view showing a fuel cell cartridge according to a first embodiment of the present invention.
  • FIG. 3 is a graph showing the discharge characteristics of the fuel cell cartridge according to the first embodiment of the present invention.
  • FIG. 4 is a process diagram (part 1) showing the method for manufacturing the fuel cell cartridge according to the first embodiment of the present invention.
  • FIG. 5 is a process diagram (part 2) illustrating the method for manufacturing the fuel cell cartridge according to the first embodiment of the present invention.
  • FIG. 6 is a process diagram (part 3) illustrating the method for manufacturing the fuel cell cartridge according to the first embodiment of the present invention.
  • FIG. 7 is a process diagram (part 4) showing the method for manufacturing the fuel cell cartridge according to the first embodiment of the present invention.
  • FIG. 8 is a cross-sectional view showing a fuel cell cartridge according to a second embodiment of the present invention.
  • FIG. 9 is a process diagram (part 1) showing a method for producing a fuel cell cartridge according to a third embodiment of the present invention.
  • FIG. 10 shows a method of manufacturing a fuel cell cartridge according to a third embodiment of the present invention.
  • FIG. 11 is a process diagram (part 3) illustrating the method for manufacturing the fuel cell cartridge according to the third embodiment of the present invention.
  • FIG. 12 is a process diagram (part 4) showing the method for producing the fuel cell cartridge according to the third embodiment of the present invention.
  • FIG. 13 is a process diagram (part 5) illustrating the method for producing the fuel cell cartridge according to the third embodiment of the present invention.
  • FIG. 14 is a plan view showing a fuel cell cartridge according to a fourth embodiment of the present invention.
  • FIG. 15 is a plan view showing a cartridge for a fuel cell according to a modification (Part 1) of the fourth embodiment of the present invention.
  • FIG. 16 is a plan view showing a fuel cell cartridge according to a modification (Part 2) of the fourth embodiment of the present invention.
  • FIG. 17 is a plan view showing a fuel cell cartridge according to a modification (Part 3) of the fourth embodiment of the present invention.
  • FIG. 1 is a conceptual diagram showing the basic configuration of the fuel cell system.
  • FIG. 2 is a cross-sectional view and a plan view showing the fuel cell cartridge according to the present embodiment.
  • the fuel cell system mainly includes a power generation unit 10 provided with a fuel chamber 12 for temporarily storing fuel, and a fuel cell cartridge for supplying fuel to the fuel chamber 12 provided in the power generation unit 10. 14 and.
  • the power generation unit 10 mainly includes a solid electrolyte layer 16, an air electrode 18 provided on one side of the solid electrolyte layer 16, and a fuel electrode 20 provided on the other side of the solid electrolyte layer 16.
  • a solid electrolyte layer 16 an air electrode 18 provided on one side of the solid electrolyte layer 16
  • a fuel electrode 20 provided on the other side of the solid electrolyte layer 16.
  • the power generation unit 10 is formed on the air electrode side current collecting layer 22 and the air electrode side current collecting layer 22.
  • a fuel chamber 12 for temporarily storing fuel is provided on the anode current collector layer 24.
  • the fuel electrode 20 includes a fuel electrode catalyst layer 21 and a fuel electrode side current collecting layer 24.
  • the fuel electrode 20 is a negative electrode and is used to extract protons and electrons by oxidizing the fuel.
  • the fuel electrode catalyst layer 21 is formed by, for example, applying fine particles made of platinum or the like, carbon powder, and a polymer forming an electrolyte layer onto a porous conductive film (not shown) such as carbon paper. It is composed of equal things.
  • the fine particles applied on the porous conductive film are not limited to platinum or the like.
  • fine particles of an alloy composed of platinum and a transition metal such as ruthenium may be used.
  • TEC61E54 which is a platinum-ruthenium alloy supported catalyst manufactured by Tanaka Kikinzoku Co., Ltd. can be used.
  • the fuel electrode side current collector layer 24 is for efficiently extracting electrons generated in the fuel electrode catalyst layer 21.
  • a material of the fuel electrode side current collecting layer 21 for example, a metal mesh made of stainless steel or nickel can be used.
  • the air electrode 18 includes an air electrode catalyst layer 19 and an air electrode side current collecting layer 22.
  • the air electrode 18 is a positive electrode, and generates ions generated by reducing oxygen, electrons, protons and water generated at the fuel electrode.
  • the air electrode catalyst layer 19 is formed by, for example, applying fine particles made of platinum or the like, carbon powder, and a polymer forming an electrolyte layer onto a porous conductive film (not shown) such as carbon paper. It is composed of equal things.
  • the fine particles applied on the porous conductive film are not limited to platinum or the like.
  • fine particles of an alloy composed of platinum and a transition metal such as ruthenium may be used.
  • TEC10E50E which is a platinum-supported catalyst manufactured by Tanaka Kikinzoku Co., Ltd., can be used.
  • the air electrode side current collector layer 22 is for efficiently supplying electrons to the air electrode catalyst layer 21.
  • a metal mesh made of stainless steel, nickel or the like is used as the material of the air electrode side current collecting layer 22.
  • the air electrode side current collecting layer 22 has a structure in which air (oxygen) can be introduced by natural diffusion! /, For example, a void or the like is formed in the air electrode side current collecting layer 22 It is desirable that
  • the solid electrolyte layer 16 is a path for transporting protons generated in the fuel electrode 20 to the air electrode 18, and is made of an ionic conductor having no electronic conductivity.
  • a perfluorosulfonic acid polymer can be used as a material for the solid electrolyte layer 16.
  • a perfluorosulfonic acid polymer can be used as a material for the solid electrolyte layer 16.
  • Nafion registered trademark
  • DuPont can be used as a powerful perfluorosulfonic acid polymer.
  • Nafion NF117 which is a partially fluorinated solid electrolyte manufactured by DuPont, can be used as the solid electrolyte layer 16.
  • the fuel stored in the fuel chamber 12 is supplied to the fuel electrode 20 by flow, diffusion, or the like.
  • the fuel chamber 12 is connected to the fuel chamber 12 according to the present embodiment.
  • FIG. 2 is a cross-sectional view and a plan view showing the fuel cell cartridge 14 according to the present embodiment.
  • FIG. 2 (a) is a cross-sectional view showing a state where fuel is not stored (filled) in the fuel cell cartridge according to the present embodiment.
  • FIG. 2 (b) is a cross-sectional view showing a state in which fuel is stored in the fuel cell cartridge according to the present embodiment.
  • FIG. 2 (c) is a plan view showing the fuel cell cartridge according to the present embodiment.
  • the separator 28 is made of a material that does not adhere to the second elastic layer 26b described later.
  • the planar shape of the first elastic layer 26 is set to, for example, a rectangle.
  • the material of the first elastic layer 26a for example, room temperature curing type silicone rubber is used.
  • KE-1310ST which is a silicone rubber manufactured by Shin-Etsu Chemical Co., Ltd., can be used as a powerful silicone rubber.
  • the external dimensions of the first elastic layer 26a are, for example, 52 mm ⁇ 38 mm ⁇ 2 mm.
  • a second elastic layer 26b made of an elastic body is formed on the first elastic layer 26a and the separator 28, a second elastic layer 26b made of an elastic body is formed.
  • the peripheral portion of the first elastic layer 26a and the peripheral portion of the second elastic layer 26b Are fixed to each other.
  • the planar shape of the second elastic layer 26a is set, for example, in the same manner as the shape of the first elastic layer 26a.
  • the material of the second elastic layer 26b for example, room temperature curing type silicone rubber is used as in the case of the first elastic layer 26a.
  • a silicone rubber for example, KE-1310ST, which is a silicone rubber manufactured by Shin-Etsu Chemical Co., Ltd., can be used.
  • the outer dimension of the second elastic layer 26b is, for example, 52 mm ⁇ 38 mm ⁇ 2 mm.
  • the first elastic body 26a and the second elastic body 26b constitute a storage section 26 for storing liquid fuel.
  • the separator 28 is for separating the first elastic layer 26a and the second elastic layer 26b, more specifically, the first elastic layer 26a and the second elastic body. This is to prevent the layer 26b from being adhered to each other.
  • a non-adhesive material that is not bonded to the first elastic layer 26a and the second elastic layer 26b is used.
  • a material of the separator 28 for example, polytetrafluoroethylene (PTFE) can be used as a material of the separator 28 for example.
  • PTFE polytetrafluoroethylene
  • the outer dimension of the separator 28 is, for example, 48 mm X 34 mm X O. 05 mm.
  • the first elastic body layer 26a and the second elastic body layer 26b are separated from each other by using the separator 28.
  • the first elastic body layers separated from each other are separated from each other. This is to make it possible to store the fuel 30 in the space formed between 26a and the second dielectric layer 26b.
  • the thicknesses of the first elastic layer 26a and the second elastic layer 26b are each 2 mm, for example.
  • the thickness of the first elastic layer 26a and the second elastic layer 26b is not limited to 2 mm.
  • the thicknesses of the first elastic layer 26a and the second elastic layer 26b may be appropriately set within a range of, for example, 1 to 2 mm!
  • the first elastic layer 26a or the second elastic layer 26b is provided with a tube 32 serving as a fuel flow path.
  • the tube 32 is attached so that one end thereof reaches a space formed between the first elastic layer 26a and the second elastic layer 26b.
  • the other end of the tube 32 is located outside the first elastic layer 26a and the second elastic layer 26b.
  • the tube 32 is provided with a connector or the like (not shown). The connector is for connecting the fuel cell cartridge 14 to the fuel chamber 12.
  • the fuel cell cartridge 14 according to the present embodiment is constituted.
  • fuel 30, for example, methanol can be stored (filled) in the fuel cell cartridge 14.
  • the fuel 30 is filled in the fuel cell cartridge 14
  • the fuel 30 is injected through the tube 32.
  • the separator 28 can be freely deformed to some extent. Therefore, for example, one end of the tube 32 is positioned between the separator 28 and the second elastic body layer 26b, and the fuel 30 is interposed between the separator 28 and the second elastic body 26b. Even when directly injected, the separator 28 and the first elastic layer 26a are interposed between the edge of the separator 28 and the inner edges of the first and second elastic layers 26a and 26b. In the meantime, the fuel 30 is filled. Thus, the fuel 30 is stored (filled) in the fuel cell cartridge 14.
  • the fuel cell cartridge 14 can store, for example, lOcc of fuel.
  • FIG. 3 is a graph showing the discharge characteristics of the fuel cell cartridge according to the present embodiment.
  • the horizontal axis indicates the volume of methanol, which is the fuel 30 filled in the fuel cell cartridge 14, and the vertical axis indicates the pressure of the fuel 30 discharged from the tube 32. Note that the concentration of fuel, that is, methanol in measuring the discharge characteristics was set to 30%.
  • the peripheral edge portion of the first elastic body layer 26a and the peripheral edge portion of the second elastic body layer 26b are fixed to each other, and the first elastic body layer 26a Since the non-adhesive separator 28 is provided between the region excluding the peripheral portion of the second elastic layer 26b and the region excluding the peripheral portion of the second elastic layer 26b, the first elastic layer 26a separated by the separator 28 is provided. And the second elastic layer 26 b can store the fuel 30. Since the first elastic layer 26a and the second elastic layer 26b attempt to return to the state before the fuel 30 is stored, the fuel 30 is discharged to the outside through the tube 32 with a certain pressure. Is done. Therefore, according to the present embodiment, it is possible to provide a simple and inexpensive fuel cell cartridge 14 capable of discharging fuel at a certain pressure without using a large component such as a pump.
  • FIGS. 4 to 7 are process diagrams showing the method of manufacturing the fuel cell cartridge according to the present embodiment.
  • Fig. 4 (b), Fig. 4 (d) and Fig. 4 (f) are plan views, and Fig. 4 (a), Fig. 4 (c) and Fig. 4 (e) are shown in Fig. 4 (b), Fig. 4 (d) and Fig. 4 (f) are cross-sectional views along line A- o Fig. 5 (b), Fig. 5 (d) and Fig. 5 (f) are plan views, and Fig. 5 (a), FIGS.
  • FIGS. 5 (c) and 5 (e) are cross-sectional views taken along line A— of FIGS. 5 (b), 5 (d) and 5 (f), respectively.
  • Fig. 6 (b), Fig. 6 (d) and Fig. 6 (f) are plan views, and Fig. 6 (a), Fig. 6 (c) and Fig. 6 (e) are respectively shown in Fig. 6 (b),
  • FIG. 7 is a cross-sectional view taken along the line A-- in FIGS. 6 (d) and 6 (f).
  • 7 (a) and 7 (b) are cross-sectional views.
  • a support substrate 34 is prepared.
  • the support substrate 34 is for molding the fuel cell cartridge 14 in combination with a lower frame 36 and the like which will be described later.
  • the support substrate 34 constitutes a part of a mold for molding the fuel cell cartridge 14.
  • a lower frame 36 that is a frame-shaped jig is placed on the support substrate 34.
  • the lower frame 36 is for molding the fuel cell cartridge 14 in combination with an upper frame described later.
  • the lower frame 36 constitutes a part of a mold for molding the fuel cell cartridge 14.
  • the inner dimension of the lower frame 36 is, for example, 52 mm X 38 mm.
  • the height of the lower frame 36 is 2 mm, for example.
  • stainless steel such as SUS-304 and SUS-316 can be used.
  • tool steel such as SK3 and SKD11 may be used.
  • a metal material such as aluminum, copper, or brass may be used.
  • heat-resistant plastics such as polysulfone, polyethersulfone, polyetherketone, phenol resin, epoxy resin, etc. should be used.
  • a material for forming the first elastic layer 26a is prepared.
  • silicone rubber is used for the first elastic layer 26a.
  • liquid silicone rubber is used as a material for forming the first elastic layer 26a.
  • KE-1310ST which is a silicone rubber manufactured by Shin-Etsu Chemical Co., Ltd.
  • KE-1310ST which is a silicone rubber manufactured by Shin-Etsu Chemical Co., Ltd.
  • a curing agent for KE-1310ST for example, cat-1310ST manufactured by Shin-Etsu Chemical Co., Ltd. can be used.
  • KE-1310ST as the silicone rubber V, perform the following operations. First, for example, mix cat-1310ST at a ratio of 10% to 15 g of KE-1310ST. Next, bubbles generated during mixing are removed (defoaming). Next, the mixed liquid is stirred.
  • the liquid elastic material formed in this way is poured into a region inside the lower frame 36 (see FIGS. 4 (e) and 4 (f)).
  • the elastic material 25a is injected into the inner region of the lower frame 36.
  • the elastic material 25a becomes the first elastic layer 26a.
  • a first top plate 38 which is a plate-shaped jig, is placed on the lower frame 36 into which the elastic material 25a is injected. Place.
  • the first top plate 38 is for flattening the surface of the elastic material 25a injected into the inside of the lower frame 36.
  • the first top plate 38 constitutes a part of a mold for forming the first elastic body layer 25a.
  • a non-adhesive material that is not bonded to the elastic material 25a is used.
  • the first top For example, fluorine-based resin such as polytetrafluoroethylene (PTFE) or perfluoroalkoxy (PFA) is used as the material of the base 38.
  • PTFE polytetrafluoroethylene
  • PFA perfluoroalkoxy
  • polyolefin resin such as polyethylene and polypropylene may be used.
  • a surface of a stainless steel such as SUS-304 or SUS-316 coated with a non-adhesive material such as polytetrafluoroethylene (PTFE) may be used.
  • PTFE polytetrafluoroethylene
  • a tool steel surface such as SK3 or SKDll coated with a non-adhesive material such as polytetrafluoroethylene (PTFE) may be used.
  • the first top plate 38 may be made of a material such as aluminum, copper, or brass coated with a non-adhesive material such as polytetrafluoroethylene (PTFE)!
  • the weight applied to the first top plate 38 is, for example, 300 g.
  • the heat treatment temperature is, for example, 60 ° C.
  • the heat treatment time is, for example, 20 minutes.
  • the elastic material 25a is cured.
  • the elastic body material 25a is cooled at room temperature, and the first top plate 38 is removed.
  • the first elastic layer 26a made of the elastic material 25a is formed.
  • the first elastic layer 26a is irradiated with ultraviolet rays using, for example, a high-pressure mercury lamp. Irradiating the first elastic body layer 26a with ultraviolet rays removes impurities such as oils and the like adhering to the surface of the first elastic body layer 26a, which may hinder adhesion, and the first elastic body layer 26a. This is to promote the surface activity of the layer 26a.
  • the conditions for irradiating ultraviolet rays are, for example, as follows.
  • the intensity of the ultraviolet lamp is, for example, about 160 WZcm.
  • the distance between the ultraviolet lamp and the first elastic layer 26a is, for example, about 10 cm.
  • a separator 28 is placed in the center.
  • a material for the separator 28 a non-adhesive material that does not adhere to the first elastic layer 26a is used.
  • a material for the separator 28 for example, polytetrafluoroethylene. (PTFE) can be used.
  • the outer dimension of the separator 28 is, for example, 48 mm X 34 mm X O. 05 mm.
  • the upper frame 40 which is a frame-shaped jig, is placed on the lower frame 36.
  • the shape of the upper frame 40 is the same as the shape of the lower frame 36.
  • the upper frame 40 is for molding the fuel cell cartridge 14 in combination with the lower frame 36 and the like. In other words, the upper frame 40 constitutes a part of a mold for molding the fuel cell force cartridge 14.
  • a material for forming the second elastic layer 26b is prepared.
  • the second elastic layer 26b for example, silicone rubber is used in the same manner as the first elastic layer 26a.
  • liquid silicone rubber is used in the same manner as the material for forming the first elastic layer 26a.
  • the powerful liquid silicone rubber for example, KE-1310ST, which is a silicone rubber manufactured by Shin-Etsu Chemical Co., Ltd., can be used as described above.
  • the curing agent for KE-1310ST for example, cat-1310ST manufactured by Shin-Etsu Chemical Co., Ltd. can be used as described above.
  • KE-1310ST is used as the silicone rubber, the following operations are performed as described above. First, for example, cat-1310ST is mixed with 15 g of KE-1310ST at a ratio of 10%. Next, the foam generated during mixing is removed (defoaming). Next, the mixed liquid is stirred.
  • the liquid elastic material formed in this way is poured into the area inside the upper frame 40 (see FIGS. 6 (a) and 6 (b)).
  • the elastic material 25b is injected into the region inside the upper frame 40.
  • the elastic body material 25b becomes the second elastic body layer 26b.
  • a second top plate 42 which is a plate-shaped jig, is placed on the upper frame 40 into which the elastic material 25b has been injected. Place.
  • the second top plate 42 is for flattening the surface of the elastic material 25b injected inside the upper frame 40.
  • the second top plate 42 constitutes a part of a mold for forming the fuel cell cartridge 14.
  • a non-adhesive material that is not bonded to the elastic material 25b is used.
  • the material of the second top plate 42 for example, polytetrafluoroethylene (PTFE), perfluoro Fluororesin such as alkoxy (PFA: Per Fluoro Alkoxy) is used.
  • polyolefin resin such as polyethylene and polypropylene may be used.
  • a stainless steel surface such as SUS-304 or SUS-316 coated with a non-adhesive material such as polytetrafluoroethylene (PTFE) may be used.
  • a tool steel surface such as SK3 or SKDll coated with a non-adhesive material such as polytetrafluoroethylene (PTFE) may be used.
  • the second top plate 42 may be made of a material such as aluminum, copper, or brass coated with a non-adhesive material such as polytetrafluoroethylene (PTFE)!
  • the weight applied to the second top plate 42 is, for example, 300 g.
  • the heat treatment temperature is, for example, 60 ° C.
  • the heat treatment time is, for example, 20 minutes.
  • the elastic material 25b is cured.
  • the second elastic layer 26b made of the elastic material 25b is formed (see FIGS. 6E and 6F).
  • the first elastic body layer 26a or the second elastic body layer 26b is provided with a separator 28 to form a hole 44 reaching the region ( (See Figure 7 (a)).
  • the tube 32 that becomes the flow path of the fuel 30 is attached. Specifically, one end force of the tube 32 is located in a region between the first elastic layer 26a and the second elastic layer 26b separated by the separator 28, and the other end of the tube 32 is disposed. The tube 32 is attached so that the portion is located outside the first and second elastic layers 26a and 26b (see FIG. 7 (b)).
  • the material of the tube 32 for example, tubular stainless steel is used.
  • a material for bonding the tube 32 to the first elastic layer 26a or the second elastic layer 26b is prepared.
  • the adhesive for example, silicone rubber is used in the same manner as the material of the first elastic layer 26a and the second elastic layer 26b.
  • liquid silicone rubber is used in the same manner as the material of the first elastic layer 26a and the second elastic layer 26b.
  • a powerful liquid silicone rubber for example, Shin-Etsu KE-1310ST, a silicone rubber manufactured by Chemical Industry Co., Ltd., can be used.
  • As the curing agent for KE-1310ST for example, cat-1310ST manufactured by Shin-Etsu Chemical Co., Ltd. can be used as described above.
  • KE-1310ST is used as the silicone rubber
  • the following operations are performed in the same manner as above. First, for example, 15% KE-1310ST is mixed with cat-1310ST at a rate of 10%. Next, bubbles generated during mixing are removed (defoaming). Next, the mixed liquid is stirred. Next, the liquid thus obtained is applied to the portion where the tube 32 is inserted.
  • the heat treatment temperature is, for example, 120 ° C.
  • the heat treatment time is 120 minutes, for example.
  • the first elastic layer 26a, the second elastic layer 26, and the like are cooled at room temperature.
  • a connector or the like (not shown) is attached to the tube 32.
  • the connector is for connecting the fuel cell cartridge to the fuel chamber.
  • the fuel cell cartridge according to the present embodiment is manufactured.
  • FIG. 8 is a cross-sectional view showing the fuel cell cartridge according to the present embodiment.
  • the same components as those of the fuel cell cartridge and the manufacturing method thereof according to the first embodiment shown in FIGS. 1 to 7 are designated by the same reference numerals, and the description thereof is omitted or simplified.
  • the main feature of the fuel cell cartridge according to the present embodiment is that an edge having a circular cross section is formed on the periphery of the separator 28a.
  • FIG. 8 (b) is a cross-sectional view taken along the line A—A ′ of FIG. 8 (a).
  • An edge having a circular cross section is formed on the periphery of the separator 28a (see FIG. 8B). More specifically, the radius R of the circular border formed on the periphery of the separator 28a is set to 0.5 mm, for example. The thickness t of the separator 28a in the region other than the peripheral edge is set to 0.05 mm, for example.
  • the peripheral edge of the separator 28a is formed with an edge having a circular cross section for the following reason.
  • the separator 28a when the separator 28a is simply formed in a plate shape, the fuel cell cartridge 14 When the fuel 30 is injected into the fuel cell cartridge 14 and the pressure inside the fuel cell cartridge 14 becomes relatively high, the first elastic layer 26a and the second elastic layer 26b may peel off. It was.
  • the first elastic body layer 26a and the second elastic body layer 26b are fixed to each other.
  • the cross-sectional shape of the inner edge portion is round corresponding to the peripheral shape of the separator 28a.
  • the shape of the cross section of the inner edge of the portion where the first elastic layer 26a and the second elastic layer 26b are fixed is round, the first elastic layer 26a and the second elastic layer 26b As a result, the fuel cell cartridge 14a can be provided with high reliability.
  • the pressure resistance of the fuel cell cartridge 14a was 40 kPa at the maximum.
  • the pressure resistance test of the fuel cell cartridge 14a was performed by gradually injecting fuel into the fuel cell cartridge 14 and obtaining a limit pressure at which the fuel cell cartridge 14 would not crack.
  • the maximum withstand pressure was 25 kPa.
  • the cross-sectional shape of the inner edge portion of the portion where the first elastic body layer 26a and the second elastic body layer 26b are fixed is round. Therefore, the first elastic body layer 26a and the second elastic body layer 26b can be prevented from being separated from each other, and a highly reliable fuel cell cartridge 14a can be provided.
  • FIGS. 9 to 13 are process diagrams showing the method for manufacturing the fuel cell cartridge according to the present embodiment.
  • Fig. 9 (b), Fig. 9 (d) and Fig. 9 (f) are plan views, and Fig. 9 (a), Fig. 9 (c) and Fig. 9 (e) are respectively shown in Fig. 9 (b),
  • FIG. 10 is a cross-sectional view taken along line A— of FIGS. 9 (d) and 9 (f).
  • Fig. 10 (b) is a plan view, and Fig. 10 (a) is a cross-sectional view taken along line A- in Fig. 10 (b). .
  • FIG. 10 (c) is an enlarged view of a portion surrounded by a circle in FIG. 10 (a).
  • Fig. 11 (b), 011 (d) and Fig. 11 (f) are plan views, and Fig. 11 (a), Fig. 11 (c) and Fig. 11 (e) are ll (b) respectively.
  • FIG. 12 is a cross-sectional view taken along line A in FIGS. 11 (d) and 11 (f).
  • 12 (b) and 12 (d) are plan views, and FIG. 12 (a) and FIG. 12 (c) are cross-sectional views taken along line AA ′ in FIGS. 12 (b) and 12 (d), respectively.
  • FIG. 13A and FIG. 13B are cross-sectional views. The same components as those in the fuel cell cartridge and the manufacturing method thereof according to the first or second embodiment shown in FIG. 1 to FIG.
  • the first top plate 38a is formed with irregularities on the surface of the first top plate 38a that is in contact with the elastic body material 25a.
  • the formed irregularities 46 are used to form irregularities on the surface of the first elastic layer 26a, thereby improving the adhesion between the first elastic layer 26a and the second elastic layer 26b. Has the main features.
  • a first top plate 38a is prepared in which irregularities 46 are formed on one surface that is in contact with the elastic material 25a (see FIG. 10C).
  • the surface roughness (arithmetic mean roughness) Ra on one surface of the first top plate 38a is, for example, about 20 m.
  • one surface of the first top plate 38a is processed using sandblast, it is possible to set one surface of the first top plate 38a to such a surface roughness Ra.
  • the first top plate 38a is placed on the lower frame 36 into which the elastic material 25a has been injected.
  • the first top plate 38a is placed on the lower frame 36, one surface of the first top plate 38a where the irregularities are formed is in contact with the surface of the elastic material 25a. Then, the first top plate 38a is placed.
  • the first top plate 38a is used to flatten the surface of the elastic material 25a injected into the lower frame 36 and to form irregularities on the surface of the elastic material 25a. is there.
  • a non-adhesive material that is not bonded to the elastic material 25a is used.
  • a fluorine-based resin such as polytetrafluoroethylene (PTFE) or perfluoroalkoxy (PFA) is used.
  • the first top plate 38a As a material of the first top plate 38a, a polyolefin resin such as polyethylene or polypropylene may be used. Alternatively, the first top plate 38a may be made of a stainless steel such as SUS-304 or SUS-316 coated with a non-adhesive material such as polytetrafluoroethylene (PTFE). Good. Further, as the material of the first top plate 38a, a tool steel surface such as SK3 or SKD11 coated with a non-adhesive material such as polytetrafluoroethylene (PTFE) may be used. Alternatively, the first top plate 38a may be made of a material such as aluminum, copper or brass coated with a non-adhesive material such as polytetrafluoroethylene (PTFE)!
  • PTFE polytetrafluoroethylene
  • the weight applied to the first top plate 38a is, for example, 300 g.
  • the heat treatment temperature is, for example, 60 ° C.
  • the heat treatment time is, for example, 20 minutes.
  • the elastic material 25a is cured.
  • the elastic material 25a is cooled at room temperature, and the first top plate 38a is removed.
  • the first elastic layer 26a made of the elastic material 25a is formed.
  • Concavities and convexities are formed on the surface of the first elastic body layer 26a corresponding to the concavities and convexities 46 (see FIG. 10C) formed on one surface of the first top plate 38a. ! Speak.
  • the first elastic layer 26a is irradiated with ultraviolet rays using, for example, a high-pressure mercury lamp.
  • the conditions for irradiating ultraviolet rays are as follows, for example.
  • the intensity of the UV lamp is, for example, about 160 WZcm.
  • the distance between the ultraviolet lamp and the first elastic layer 26a is, for example, about 10 cm.
  • the ultraviolet rays are irradiated while moving the first inorganic layer 26a at a speed of lmZ.
  • a separator 28 is placed in the center.
  • the separator 28a described above in the second embodiment is mounted on the first elastic body layer 26a. Please put it.
  • the upper frame 40 which is a frame-shaped jig, is placed on the lower frame 36.
  • a material for forming the second elastic layer 26b is prepared.
  • the second elastic layer 26b for example, silicone rubber is used in the same manner as the first elastic layer 26a.
  • liquid silicone rubber is used in the same manner as the material for forming the first elastic layer 26a.
  • the powerful liquid silicone rubber for example, KE-1310ST, which is a silicone rubber manufactured by Shin-Etsu Chemical Co., Ltd., can be used as described above.
  • the curing agent for KE-1310ST for example, cat-1310ST manufactured by Shin-Etsu Chemical Co., Ltd. can be used as described above.
  • KE-1310ST is used as the silicone rubber, the following operations are performed as described above. First, for example, cat-1310ST is mixed with 15 g of KE-1310ST at a ratio of 10%. Next, the foam generated during mixing is removed (defoaming). Next, the mixed liquid is stirred.
  • the thus formed liquid elastic material is poured into the inner region of the upper frame 40 (see Fig. 11 (e) and Fig. 1 (f)).
  • the elastic material 25b is injected into the region inside the upper frame 40.
  • the elastic body material 25b becomes the second elastic body layer 26b.
  • the second top plate 42 which is a plate-shaped jig, is placed on the upper frame 40 into which the elastic material 25b has been injected. Is placed.
  • the weight for the second top plate is, for example, 300g.
  • the heat treatment temperature is, for example, 60
  • the heat treatment time is, for example, 20 minutes.
  • the elastic material 25b is cured.
  • the second elastic layer 26b made of the elastic material 25b is formed (see FIGS. 12 (c) and 12 (d)).
  • the second elastic layer 26b is formed on the first elastic layer 26a having the irregularities formed on the surface. Therefore, the first elastic layer 26a and the second elastic layer 26 Good adhesion to b can be obtained.
  • the subsequent manufacturing method of the fuel cell cartridge is the same as the manufacturing method of the fuel cell cartridge described above with reference to Figs. 13 (a
  • the fuel cell cartridge 14b according to the present embodiment is manufactured.
  • the maximum withstand pressure was 25 kPa.
  • the second elastic layer 26b is formed on the first elastic layer 26a having the irregularities formed on the surface, the first elastic layer 26a and the first elastic layer 26a Adhesion with the second elastic layer 26b can be improved. Therefore, it is possible to prevent the first elastic body layer 26a and the second elastic body layer 26b from being separated from each other, and to provide a more reliable fuel cell cartridge 14b.
  • FIG. 14 is a plan view showing the fuel cell cartridge according to the present embodiment.
  • the same components as those of the fuel cell cartridge and the manufacturing method thereof according to the first to third embodiments shown in FIGS. 1 to 13 are denoted by the same reference numerals, and description thereof will be omitted or simplified.
  • the fuel cell cartridge 14c according to the present embodiment is mainly characterized in that a cut 48 is formed in the separator 28b.
  • a separator 28b for separating the first elastic body layer 26a and the second elastic body layer 26b is formed therebetween.
  • a material for the separator 28b for example, a film made of polyethylene terephthalate (PET) is used.
  • PET polyethylene terephthalate
  • the thickness of the separator 28b is about 100 m. Degree.
  • a cut 48 is formed in the separator 28b.
  • the cut 48 is formed in a region excluding the peripheral portion of the separator 28b, that is, in the central portion.
  • the cut 48 is formed in a cross shape. More specifically, the linear cut 48a of 3 Omm and the straight cut 48b of 25mm are formed so as to intersect each other.
  • the cuts 48 are formed in the separator 28b for the following reason.
  • the separator when a relatively hard material is used as the separator material, the separator is relatively difficult to deform. Therefore, when the fuel is injected into the fuel cell cartridge, the first separator is used. In some cases, the elastic body layer 26a and the second elastic body layer 26b gradually bite into a portion where they are fixed. When force is applied, the first elastic body layer 26a and the second elastic body layer 26b cause separation from each other.
  • the separator 28b since the cut 48 is formed in the separator 28b, the separator 28b is freely deformed when the fuel 30 is injected into the fuel cell cartridge 14c. Therefore, in the present embodiment, when the fuel 30 is injected into the fuel cell cartridge 14c, the separator 28b bites between the first elastic layer 26a and the second elastic layer 26b. Can be prevented. Therefore, according to the present embodiment, it is possible to prevent the first elastic layer 26a and the second elastic layer 26b from being separated from each other, and to provide a more reliable fuel cell cartridge 14c. It becomes possible to do.
  • the maximum withstand pressure was 25 kPa as described above.
  • the cut 48 is formed in the separator 28b.
  • the separator 28b is freely deformed, and the separator 28b bites between the first elastic layer 26a and the second elastic layer 26b. It is possible to prevent going out. Therefore, according to the present embodiment, it is possible to prevent the first elastic body layer 26a and the second elastic body layer 26b from being separated from each other, and to provide a more reliable fuel cell cartridge. Is possible.
  • FIG. 15 is a plan view showing a fuel cell cartridge according to this modification.
  • a cut 48a is formed in the longitudinal direction of the separator 28c.
  • the dimension of the cut 48a is, for example, 30 mm.
  • FIG. 16 is a plan view showing a fuel cell cartridge according to this modification.
  • a cut 48b is formed in a direction perpendicular to the longitudinal direction of the separator 28d.
  • the dimension of the cut 48b is, for example, 25 mm.
  • FIG. 17 is a plan view showing a fuel cell cartridge 14f according to this modification.
  • a slit 50 is formed in an X shape in the separator 28e.
  • the first elastic layer 26a and the second elastic layer 26b has been described as an example, but the first elastic layer 26a and the second elastic layer 26a
  • the material of the elastic layer 26b is not limited to silicone rubber.
  • ethylene propylene rubber, poly (vinyl acetate) -ethylene ethylene alcohol alcohol copolymer, or polyvinyl chloride vinyl may be used as the material for the first elastic layer 26a and the second elastic layer 26b. Good.
  • fluorine-based resins such as perfluoroalkoxy (PFA) and fluorinated ethylene propylene (FEP) may be widely used as the material for the separators 28, 28a to 28e. it can.
  • PFA perfluoroalkoxy
  • FEP fluorinated ethylene propylene
  • polyolefin resin such as polyethylene (PE: PolyEthylene), polypropylene (PP: PolyPropylene), and cycloolefin polymer (COP) is used as a separator. 28, 28a ⁇ 28e as a gift, ffll!
  • Polyester naphthalate (PEN: PolyEthylene Naphtarete), polybutylene terephthalate (PBT), polylactic acid, etc.
  • PEN PolyEthylene Naphtarete
  • PBT polybutylene terephthalate
  • polylactic acid etc.
  • the separators 28 and 28a to 28e may be used as materials.
  • chlorinated mulled resin such as plasticized polyvinyl chloride (Plasticized Polyvinyl Chloride) or a polymer of soft polychlorinated butyl chloride may be used as the material for separators 28, 28a to 28e.
  • first elastic layer 26a and the second elastic layer 26b are separately formed.
  • first elastic layer 26a and the second elastic layer 26b are formed by injection molding, compression molding, or the like.
  • the second elastic body layer 26b may be integrally formed.
  • the fuel cell cartridge, the manufacturing method thereof, and the fuel cell system according to the present invention are useful for realizing a fuel cell cartridge and a fuel cell system that are simple and inexpensive.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
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  • Electrochemistry (AREA)
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Abstract

Cartouche (14) pour piles à combustible comportant: une première couche élastomère (26a); une seconde couche élastomère (26b) reliée à une partie périphérique de la première couche élastomère pour former un espace entre cette couche et la première couche élastomère, ledit espace servant à emmagasiner du combustible (30); un séparateur (28) placé entre la région de la première couche élastomère qui n'est pas la partie périphérique et la région de la seconde couche élastomère qui n'est pas la partie périphérique; et un tube (32) attaché de telle façon qu'une de ses extrémités atteigne l'espace formé entre la première couche élastomère et la seconde couche élastomère. La première couche élastomère et la seconde couche élastomère ont la propriété de pouvoir retrouver l'état dans lequel elles étaient dans la cartouche dans laquelle aucun combustible n'a été emmagasiné. Grâce à cette propriété, le combustible est émis vers l'extérieur par le tube à un certain niveau de pression. Ainsi, la cartouche (14) permet d'émettre le combustible à un certain niveau de pression sans avoir besoin d'un élément constitutif compliqué comme une pompe. C'est un système simple et peu cher.
PCT/JP2006/306544 2006-03-29 2006-03-29 Cartouche pour pile à combustible, procédé pour la produire et système de pile à combustible WO2007110956A1 (fr)

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PCT/JP2006/306544 WO2007110956A1 (fr) 2006-03-29 2006-03-29 Cartouche pour pile à combustible, procédé pour la produire et système de pile à combustible
JP2008507338A JP5024285B2 (ja) 2006-03-29 2006-03-29 燃料電池用カートリッジ及びその製造方法並びに燃料電池システム

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US9017892B2 (en) 2004-05-04 2015-04-28 Societe Bic Electrochemical cells having current-carrying structures underlying electrochemical reaction layers
US9472817B2 (en) 2008-02-29 2016-10-18 Intelligent Energy Limited Electrochemical cell and membranes related thereto

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US9673476B2 (en) 2007-09-25 2017-06-06 Intelligent Energy Limited Fuel cell systems including space-saving fluid plenum and related methods
US9472817B2 (en) 2008-02-29 2016-10-18 Intelligent Energy Limited Electrochemical cell and membranes related thereto

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