JP2005276464A - Fuel cell container, fuel cell, and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small, rigid and reliable fuel cell container capable of storing an electrolyte member and enabling even supply of gas, a uniform temperature gradient inside the container, highly efficient electrical connections and highly efficient power generation, and a fuel cell for a portable electronic device. <P>SOLUTION: The fuel cell container 2 includes a base 6 that houses an electrolyte member 3 having first and second electrodes 4, 5; a first fluid flow passage 8; a first wiring conductor 10; a lid 7 attached to the top surface of the base 6; a second fluid flow passage 9; and a second wiring conductor 11. At least one of the first and second wiring conductors 10, 11 is formed around the opening of the first fluid flow passage 8 or the opening of the second fluid flow passage 9 in such a manner as to abut the first or second electrode 4, 5. Also, the periphery of the opening of either the first or second fluid flow passage 8, 9 is porous and has an air hole 12 that either communicates the first fluid flow passage 8 to the first electrode 4 or communicates the second fluid flow passage 9 to the second electrode 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a small and highly reliable fuel cell container made of ceramics that accommodates an electrolyte member, a fuel cell using the same, and an electronic device.

  In recent years, development of small fuel cells that operate at a lower temperature than before has been actively conducted. Depending on the type of electrolyte used for the fuel cell, a polymer electrolyte fuel cell (hereinafter referred to as PEFC), a phosphoric acid fuel cell, or a solid electrolyte fuel cell is known. ing.

Among them, PEFC has a low operating temperature of about 80-100 ° C,
(1) The output density is high, and the size and weight can be reduced.
(2) Since the electrolyte is not corrosive and the operating temperature is low, since there are few restrictions on the battery constituent materials from the viewpoint of corrosion resistance, cost reduction is easy.
(3) Since it can be started at room temperature, the startup time is short.
It has excellent features such as For this reason, PEFC takes advantage of the above features and is not only applied to driving power sources for vehicles and cogeneration systems for homes, but also to mobile phones, PDAs (Personal Digital Assistants), laptop computers, digital cameras, The use as a power source for portable electronic devices whose output of a video camera or the like has several W to several tens of W has been considered.

The PEFC is roughly divided, for example, a fuel electrode (cathode) composed of a carbon electrode to which catalyst fine particles such as platinum and platinum-ruthenium are adhered, and an air electrode (anode) composed of a carbon electrode to which catalyst fine particles such as platinum are adhered, A film-like electrolyte member (hereinafter referred to as an electrolyte member) interposed between the fuel electrode and the air electrode is configured. Here, hydrogen gas (H ₂ ) extracted through the reforming unit is supplied to the fuel electrode, while oxygen gas (O ₂ ) in the atmosphere is supplied to the air electrode, Predetermined electric energy is generated (power generation) by the electrochemical reaction, and electric energy that is a driving power source (voltage / current) for the load is generated.

Specifically, when the hydrogen gas to the fuel electrode (H ₂₎ is supplied, as shown in the following chemical equation (1), electrons by the catalyst (e ^-) is separated hydrogen ions (protons; H ⁺ ) Is generated and passes through the electrolyte member to the air electrode side, and electrons (e ⁻ ) are taken out by the carbon electrode constituting the fuel electrode and supplied to the load.

3H ₂ → 6H ⁺ + 6e ⁻ (1)
On the other hand, when air is supplied to the air electrode, as shown in the following chemical reaction formula (2), electrons (e ⁻ ) passing through the load by the catalyst and hydrogen ions (H ⁺ ) passing through the electrolyte member, Reaction with oxygen gas (O ₂ ) in the air produces water (H ₂ O).

6H ⁺ + 3 / 2O ₂ + 6e ⁻ → 3H ₂ O (2)
Such a series of electrochemical reactions (formula (1) and formula (2)) proceeds under relatively low temperature conditions of approximately 80 to 100 ° C., and by-products other than electric power are basically water (H ₂ O) only.

  The ion conductive film (exchange membrane) constituting the electrolyte member is a polystyrene-based cation exchange membrane having a sulfonic acid group, a mixed membrane of fluorocarbon sulfonic acid and polyvinylidene fluoride, and trifluoroethylene grafted on a fluorocarbon matrix. Recently, a perfluorocarbon sulfonic acid film (for example, trade name “Nafion” manufactured by DuPont) or the like has been used.

  FIG. 4 is a sectional view showing the structure of a conventional fuel cell (PEFC). In the figure, 21 is a PEFC, 23 is an electrolyte member, 24 and 25 are arranged on the electrolyte member 23 so as to sandwich the electrolyte member, and a pair of porous electrodes having functions as a gas diffusion layer and a catalyst layer, that is, A fuel electrode and an air electrode, 26 is a gas separator, 28 is a fuel flow path, and 29 is an air flow path.

  The gas separator 26 is provided so as to penetrate the separator portion and the gas inflow / outflow frame that form the outer shape of the gas separator 26, the separator portion that separates the fuel passage 28 and the air passage 29, and the separator portion. The electrode member is configured to correspond to the fuel electrode 24 and the air electrode 25 of the electrolyte member 23. A fuel cell stack, which is the smallest unit of a battery, is formed by stacking a large number of gas electrodes 26 so that the fuel electrode 24 and the air electrode 25 of the electrolyte member 23 are electrically connected in series and / or in parallel. A typical PEFC body is a stack in a box.

A fuel gas containing water vapor (a gas rich in hydrogen) is supplied from the reformer to the fuel electrode 24 through the fuel flow path 28 formed in the gas separator 26, and the air electrode 25 is passed through the air flow path 29 to the atmosphere. Is supplied with air as an oxidizing gas, and is generated by a chemical reaction in the electrolyte member 23.
JP 2001-266910 A Special table 2001-507501 gazette

  However, the fuel cell 21 conventionally proposed and developed as such a high-voltage, high-capacity battery is a large-sized and large-sized battery having a stack structure and a large area, and a small battery. Conventionally, the use of the fuel cell has been hardly considered.

  That is, in the conventional gas separator 26 in such a fuel cell 21, the side surface of the electrolyte member 23 is exposed to the outside in a laminate in which the electrolyte member 23 is laminated using the gas separator 26. There is a problem that the fuel cell 21 is easily damaged and it is difficult to ensure the mechanical reliability of the fuel cell 21 as a whole.

  In addition, in order to mount the fuel cell 21 in a portable electronic device, a fuel cell container that is different from conventional large-sized fuels and is excellent in compactness, simplicity, and safety is required. That is, in order to be applied as a portable power source such as a general-purpose chemical battery, in order to shorten the temperature rise to the operating temperature and to reduce the heat capacity, the fuel cell container is reduced in size and height. However, the gas separator 26 occupying most of the heat capacity in the conventional fuel cell 21 is thinned, particularly in the case of the gas separator 26 in which the flow path is formed by cutting on the surface of the carbon plate. Since it becomes brittle, a thickness of several mm is required. Therefore, there is a problem that it is difficult to reduce the size and height.

  Further, the output voltage of the fuel cell 21 is determined by the partial pressure of the gas supplied to the electrodes 24 and 25 on the front and back surfaces of the electrolyte member 23, but the fuel gas supplied to the electrolyte member 23 travels through the gas flow path 28. When consumed in the power generation reaction, the partial pressure of the fuel gas on the surface of the fuel electrode 24 decreases and the output voltage decreases. Similarly, when air is also consumed through the air flow path 29, the partial pressure of oxygen on the surface of the air electrode 25 is lowered, and the output voltage is lowered. Therefore, it is necessary to supply the fuel gas evenly while maintaining a constant partial pressure, but the gas separator 26 of the conventional fuel cell 21 has a flow path formed by cutting on the surface of the carbon plate in particular. Therefore, since the depth of the groove of the flow path is reduced when the thickness is reduced, the resistance of the flow path is increased, and there is a problem that uniform gas supply is difficult.

  In addition, the combination of the plurality of electrolyte members 23, the fuel electrode 24, the air electrode 25, and the gas separator 26 is arbitrarily connected in series or in parallel so that the overall output voltage and output current are adjusted. However, in the conventional fuel cell 21, in order to take out electricity from the fuel electrode 24 and the air electrode 25 sandwiching the electrolyte member 23, the wiring conductor is drawn out and connected to the outside, or the gas separator 26 is connected to the conductive sheet. There is only a method of overlapping and connecting in series, and there is a problem that it is difficult in a small fuel cell.

  The present invention has been completed in view of the above-described problems of the prior art, and an object of the present invention is a small and robust fuel cell container that can accommodate an electrolyte member, It is an object of the present invention to provide a highly reliable fuel cell container capable of uniform supply and highly efficient electrical connection, and a fuel cell using the same.

  The fuel cell container of the present invention includes a base body made of ceramics having a concave portion for accommodating an electrolyte member having first and second electrodes on the lower and upper main surfaces, respectively, and the lower main surface of the electrolyte member. One end is disposed on the first fluid flow path formed from the bottom surface of the recess facing the outer surface of the substrate and the bottom surface of the recess facing the first electrode of the electrolyte member, and the other end is the substrate. A first wiring conductor led out to an outer surface of the substrate, a lid body, which is attached to the upper surface around the recess of the base so as to cover the recess, and hermetically seals the recess, and the upper side of the electrolyte member One end is disposed on the lower surface of the lid facing the second electrode of the electrolyte member, the second fluid flow path formed from the lower surface of the lid facing the main surface to the outer surface of the lid, The other end was led to the outer surface of the lid Two wiring conductors, and at least one of the first wiring conductor and the second wiring conductor is formed around the opening of the first fluid flow path on the bottom surface of the recess or on the lower surface of the lid body. Two fluid flow paths are formed around the opening of the first electrode or the second electrode, and the periphery of the opening of the first fluid flow path or the second fluid flow path is It is porous having pores communicating with the first fluid flow path and the first electrode, or porous having pores communicating with the second fluid flow path and the second electrode. It is characterized by.

  In the fuel cell container according to the present invention, preferably, the base or the lid has a portion in contact with the porous first wiring conductor or a portion in contact with the porous second wiring conductor. It is porous having pores that communicate between one fluid flow path and the first wiring conductor, or is porous having pores that communicate between the second fluid flow path and the second wiring conductor. It is characterized by this.

  In the fuel cell of the present invention, the electrolyte member is accommodated in the concave portion of the fuel cell container having the above-described configuration, and the lower and upper main surfaces of the electrolyte member are the first and second fluid flow paths. And the first and second electrodes are electrically connected to the first and second wiring conductors, respectively, on the upper surface around the concave portion of the base body. The lid is attached to cover the recess.

  An electronic apparatus according to the present invention includes the fuel cell according to claim 3 as a power source.

  The fuel cell container of the present invention has a base made of ceramics having a concave portion for accommodating an electrolyte member having first and second electrodes on the lower and upper main surfaces, respectively, and an upper surface around the concave portion of the base. Since it has a lid that covers and attaches to the recess and hermetically seals the recess, the fuel cell container is hermetically sealed so that there is no leakage of fluid such as gas, Since it is not necessary to provide a container such as a package in addition to this container, it is possible to obtain a fuel cell that can be operated efficiently, and it is also effective for downsizing. In addition, since a plurality of electrolyte members can be housed in a box formed by a ceramic body having a concave portion on the upper surface and a lid that seals the concave portion, a fuel cell can be obtained. The mechanical reliability of the entire fuel cell is improved without being exposed to the outside and being damaged. In addition to the first and second wiring conductors, one end of which is disposed inside the container constituted by the recess and the lid, unnecessary electrical contact with the electrolyte member itself can be avoided, so that reliability and safety are ensured. High fuel cell can be obtained. Furthermore, by using ceramics as the constituent material of the fuel cell container, it is possible to obtain a fuel cell having excellent corrosion resistance against fluids including various gases.

  Also, a first fluid channel formed from the bottom surface of the recess facing the lower main surface of the electrolyte member to the outer surface of the substrate, and formed from the lower surface of the lid body facing the upper main surface of the electrolyte member to the outer surface of the lid body. Since each of the plurality of fluid flow paths is provided on the inner wall surfaces facing each other across the electrolyte member, the fluid supplied to the electrolyte member The uniform supply performance can be improved. According to such a fluid path, since the fluid flows perpendicularly to the electrolyte member, for example, when the fluid is hydrogen gas and air (oxygen) gas, the electrolyte member has on the lower and upper main surfaces, respectively. There is an effect that the partial pressure of each gas supplied to the first and second electrodes can be suppressed from decreasing, and a predetermined stable output voltage can be obtained. Further, since the pressure of the fluid to be supplied, for example, the gas partial pressure is stabilized, the distribution of the internal temperature of the fuel cell container is made uniform, and as a result, the thermal stress generated in the electrolyte member can be suppressed. Reliability can be improved.

  Furthermore, since each fluid flow path is formed in the base and the lid, each of the flow paths is excellent in hermeticity, and originally two types of raw material fluids (for example, oxygen gas and hydrogen) that should be isolated in the flow path are used. Gas or methanol) does not prevent the function of the fuel cell from being expressed, and there is no risk of ignition or explosion after the flammable fluid is mixed at a high temperature. A fuel cell can be provided.

  Further, at least one of the first wiring conductor and the second wiring conductor is formed on the first electrode or the periphery of the opening of the first fluid channel on the bottom surface of the recess or the periphery of the opening of the second fluid channel on the bottom surface of the lid. The first fluid flow path or the periphery of the opening of the second fluid flow path is made porous so as to contact the second electrode, and has pores communicating the first fluid flow path and the first electrode. Or a porous material having pores communicating the second fluid channel and the second electrode, so that the fluid is directly supplied to the electrolyte member from the first fluid channel or the second fluid channel. In addition, since the fluid is supplied to the electrolyte member through the porous pores of the first wiring conductor and the second wiring conductor, the area where the air and the fuel gas are in contact with the first electrode and the second electrode is increased. Can promote the electrochemical reaction of air and fuel gas So, it can be made higher power generation efficiency.

  Furthermore, by adjusting the pore diameter and porosity, the fuel supplied to the first electrode and the second electrode can be changed according to the type and supply method of the fuel such as hydrogen gas and methanol, and the oxidant gas such as oxygen gas. The supply rate of the oxidant gas can be adjusted easily and accurately, and the power generation efficiency can be made extremely high.

  In the fuel cell container according to the present invention, preferably, the base or the lid has a portion in contact with the porous first wiring conductor or a portion in contact with the porous second wiring conductor in the first fluid flow path and the first. Since it has a porous structure having pores communicating with the wiring conductor or a porous structure having pores communicating with the second fluid flow path and the second wiring conductor, the first wiring conductor and the second wiring conductor are provided. Since the fluid is supplied to the electrolyte member not only through the porous pores of the wiring conductor but also through the porous pores of the base body and the lid, the fluid can be supplied to the electrolyte member through the pores better. The power generation efficiency can be further improved.

  In addition, since such a porous material has a three-dimensional network structure and isotropic in mechanical properties, it is in a portion where the first wiring conductor and the second wiring conductor of the base body and the lid are disposed. Reliability in mechanical characteristics and fluid permeation characteristics can be increased.

  In the fuel cell of the present invention, the electrolyte member is accommodated in the recess of the fuel cell container of the present invention, and the lower and upper main surfaces of the electrolyte member are respectively connected to the first and second fluid flow paths. The first and second electrodes are electrically connected to the first and second wiring conductors, respectively, and the lid is attached to the upper surface around the concave portion of the base body. Therefore, a highly reliable fuel cell having the features of the fuel cell container of the present invention as described above, which is small, robust, can supply gas uniformly, and can make highly efficient electrical connection is obtained. be able to.

  Since the electronic device according to the present invention has the fuel cell according to the present invention as a power source, the electronic device according to the present invention is small, low-profile, and stable over a long period of time with the features of the fuel cell container according to the present invention. Thus, it is possible to obtain an electronic device with excellent safety and convenience.

  In addition, if the fuel cell as a power source is provided with external connection terminals (positive terminal and negative terminal) on at least one of the base and lid, it can be easily electrically connected to the circuit board of the electronic device. And can be freely attached and detached. Therefore, the fuel cell can be easily replaced with a new one without using a facility equipped with special safety equipment, and the convenience of the electronic device can be enhanced.

  Furthermore, since a metal layer can be formed in various shapes and electrical characteristics by a metallization method or the like inside the base of the fuel cell container, an electronic circuit element that functions as a resistance, capacitance, inductance, etc. is provided inside the base. Can be formed. Therefore, for example, when a large capacity capacitor is formed in parallel with the fuel cell, when the current output from the fuel cell becomes insufficient, the insufficient current is compensated to meet the target output current. It is possible to ensure a sufficient current supply. In addition, since a booster circuit can be formed, a voltage necessary for the electronic device can be secured.

  A fuel cell container and a fuel cell according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a cross-sectional view showing an example of an embodiment of a fuel cell container and a fuel cell using the same according to the present invention. In FIG. 1, 1 is a fuel cell, 2 is a fuel cell container, 3 is an electrolyte member, 4 is a first electrode, 5 is a second electrode, 6 is a base, 7 is a lid, 8 is a first fluid flow path, 9 is a second fluid flow path, 10 is a first wiring conductor, and 11 is a second wiring conductor.

  2A is a cross-sectional view showing the periphery of the opening of the first fluid channel or the second fluid channel in the fuel cell container of the present invention of FIG. 1 and the fuel cell using the same. (B) shows the other example of embodiment about the circumference | surroundings of the opening of the 1st fluid flow path or the 2nd fluid flow path in the container for fuel cells of this invention, and a fuel cell using the same. In FIG. 2, the reference numerals are the same as those in FIG. 1, and 12 is a pore.

  The electrolyte member 3 in the present invention faces, for example, the first electrode 4 formed on the lower main surface and the second electrode 5 formed on the upper main surface on both main surfaces of the ion conductive film (exchange membrane). Thus, a fuel electrode (not shown) serving as an anode electrode and an air electrode (not shown) serving as a cathode electrode are integrally formed. And the electric current generated with the electrolyte member 3 can be sent to the 1st electrode 4 and the 2nd electrode 5, and it can take out outside.

  Such an ion conductive film (exchange membrane) of the electrolyte member 3 is made of a perfluorocarbon sulfonic acid resin, for example, a proton conductive ion exchange resin such as a trade name “Nafion” (manufactured by DuPont). Further, the fuel electrode and the air electrode are gas diffusion electrodes in a porous state, and have both functions of a porous catalyst layer and a gas diffusion layer. These fuel electrode and air electrode are constituted by a porous material in which conductive fine particles carrying a catalyst such as platinum, palladium or alloys thereof, for example, carbon fine particles are held by a hydrophobic resin binder such as polytetrafluoroethylene. Has been.

  The first electrode 4 on the lower main surface and the second electrode 5 on the upper main surface of the electrolyte member 3 are a method of hot pressing a carbon electrode with catalyst fine particles such as platinum or platinum-ruthenium on the electrolyte member 3, or Further, it is formed by a method of applying or transferring a mixture of a carbon electrode material with catalyst fine particles such as platinum or platinum-ruthenium and a solution in which an electrolyte material is dispersed onto the electrolyte.

The fuel cell container 2 is composed of a base 6 having a recess and a lid 7, and has a role of hermetically sealing the electrolyte member 3 by mounting the electrolyte member 3 inside the recess, and is made of aluminum oxide (Al ₂ O ₃ ) body, mullite _{(3Al 2 O 3 · 2SiO 2} ) sintered material, silicon carbide (SiC) sintered material, aluminum nitride (AlN) sintered material, silicon nitride _(Si 3 _{N 4)} sintered material It is formed of a ceramic material such as a glass ceramic sintered body.

The glass ceramic sintered body includes a glass component and a filler component. Examples of the glass component include SiO ₂ —B ₂ O ₃ , SiO ₂ —B ₂ O ₃ —Al ₂ O ₃ , and SiO ₂ —. B ₂ O ₃ —Al ₂ O ₃ —MO system (M represents Ca, Sr, Mg, Ba or Zn), SiO ₂ —Al ₂ O ₃ —M ¹ O—M ² O system (M ¹ and M ² are the same or different and represent Ca, Sr, Mg, Ba or Zn), SiO ₂ —B ₂ O ₃ —Al ₂ O ₃ —M ¹ O—M ² O system (provided that M ¹ and M ² is the same as above), SiO ₂ —B ₂ O ₃ —M ³ ₂ O system (where M ³ represents Li, Na or K), SiO ₂ —B ₂ O ₃ —Al ₂ O ₃ — M ³ ₂ O-based (where M ³ is the same as above), Pb-based glass And Bi-based glass.

Examples of the filler component include a composite oxide of Al ₂ O ₃ , SiO ₂ , ZrO ₂ and an alkaline earth metal oxide, a composite oxide of TiO ₂ and an alkaline earth metal oxide, Al ₂ O _3. And composite oxides containing at least one selected from SiO ₂ (for example, spinel, mullite, cordierite) and the like.

  The fuel cell container 2 is composed of a base 6 having a recess and a lid 7, and covers the recess around the recess of the base 6 to attach the lid 7 so that the recess is hermetically sealed. Bonding with metal bonding materials such as silver brazing, bonding with resin materials such as epoxy resin, sealing ring made of iron alloy etc. on the upper surface around the recess, seam weld, electron beam, laser, etc. The lid body 7 is attached to the base body 6 by a welding method or the like. The lid 7 may be formed with a recess similar to the base 6.

  In order to reduce the thickness of the base body 6 and the lid body 7 and to reduce the height of the fuel cell 1, the bending strength, which is mechanical strength, is preferably 200 MPa or more.

  The base body 6 and the lid body 7 are preferably formed of an aluminum oxide sintered body made of a dense material having a relative density of 95% or more, for example. In that case, for example, first, a rare earth oxide powder or a sintering aid is added to and mixed with the aluminum oxide powder to prepare a raw material powder of the aluminum oxide sintered body. Next, an organic binder and a dispersing agent are added to the raw material powder of the aluminum oxide sintered body, mixed to form a paste, and an organic binder is added from this paste by a doctor blade method, or an organic binder is added to the raw material powder, press forming, rolling forming, etc. Thus, a green sheet having a predetermined thickness is produced. Then, through this green sheet, through holes as the first fluid flow path 8 and the second fluid flow path 9 are formed by a punching method using a mold, a drilling method using a micro drill, a drilling method using laser light irradiation, and the like. A through hole for arranging the first wiring conductor 10 and the second wiring conductor 11 is formed. In addition, the 1st fluid flow path 8 and the 2nd fluid flow path 9 may be the groove | channel formed in the surface or the inside by stamping with a metal mold | die, press molding, etc.

When an aluminum oxide sintered body is used as the ceramic material constituting the base body 6 and the lid body 7, the first wiring conductor 10 and the second wiring conductor 11 are formed of tungsten and / or molybdenum in order to prevent oxidation. It is preferable. In that case, for example, ₃ to 20 parts by mass of Al ₂ O ₃ and 0.5 to 5 parts by mass of Nb ₂ O ₅ with respect to 100 parts by mass of tungsten and / or molybdenum powder as inorganic components. A conductor paste is prepared by adding. The conductor paste is filled into the through hole of the green sheet to form a via conductor as a through conductor.

  In these conductor pastes, in order to improve the adhesion of the substrate 6 and the lid 7 to the ceramic, aluminum oxide powder or the same composition powder as the ceramic component forming the substrate 6 and the lid 7 is used. It is also possible to add 0.05 to 2% by volume.

  The formation of the first wiring conductor 10 and the second wiring conductor 11 on the surface layer and the inner layer of the base body 6 and the lid body 7 is the same as before or after forming the via conductor by filling the through hole with the conductive paste. The conductive paste is formed by printing and applying to a predetermined pattern on the green sheet by a method such as screen printing or gravure printing.

  Then, after aligning and laminating and pressure-bonding a predetermined number of sheet-like molded bodies filled with conductive paste, the laminated body is heated at a maximum firing temperature of 1200 to 1500 ° C., for example, in a non-oxidizing atmosphere. To obtain the target ceramic base 6, lid 7, first wiring conductor 10, and second wiring conductor 11.

  In addition, the first wiring conductor 10 and the second wiring conductor 11 are configured so that the electricity generated electrochemically by the electrolyte member 3 can be efficiently extracted to the outside. The specific electrical resistance is preferably 0.1 milliΩcm or less. Examples of such materials include silver, silver-based metals, copper, and copper-based metals. For example, the base body 6 and the lid body 7 are formed of a glass ceramic sintered body, and the first and second wiring conductors 11 are made of copper or a copper-based metal. A low-resistance wiring conductor can be easily formed by simultaneous firing with the wiring conductor 11.

  Further, the volume of all conductors including the first wiring conductor 10 and the second wiring conductor 11 formed in the fuel cell container 2 may be 0.5% or more of the volume of the fuel cell container 2. Thereby, the resistance of the conductor formed in the fuel cell container 2 is reduced, and the electricity electrochemically generated by the electrolyte member 3 can be efficiently taken out to the outside.

  Further, an external connection terminal (not shown) may be joined to at least one of the base body 6 and the lid body 7 by soldering or brazing. It is desirable that the external connection terminal has a shape that allows good electrical connection with a mother board or the like for forming the main electronic circuit of the electronic device. As such a shape, for example, a rod shape, a saddle shape, a conical shape, etc. that can be easily electrically and mechanically connected to each other by connecting or inserting terminals to an electronic circuit that is a main part of an electronic device. Is used. In addition, it is preferable to provide a fitting portion (a hole or the like) corresponding to the external connection terminal in a portion to which the external connection terminal is connected in the electronic circuit that is the main component of the electronic device. Furthermore, by arranging the external connection terminals on the side surfaces of the base body 6 and the lid body 7, the height of the electronic device can be reduced.

  Moreover, it is preferable that the base | substrate 6 and the cover body 7 which consist of ceramics shall be 0.2 mm or more in thickness. If the thickness is less than 0.2 mm, the strength tends to decrease. Therefore, cracks and the like tend to occur in the base body 6 and the lid body 7 due to the stress generated when the lid body 7 is attached to the base body 6. . On the other hand, if the thickness exceeds 5 mm, it is difficult to reduce the thickness and height, so that it becomes inappropriate as the fuel cell 1 mounted on a small portable device, and the heat capacity becomes large. It tends to be difficult to quickly set an appropriate temperature corresponding to the reaction conditions.

  The first wiring conductor 10 and the second wiring conductor 11 are electrically connected to the first electrode 4 and the second electrode 5 of the electrolyte member 3, respectively, and the current generated by the electrolyte member 3 is supplied to the fuel cell container 2. It functions as a conductive path for taking it out.

  The first wiring conductor 10 is preferably in contact with the first electrode 4 of the electrolyte member 3 around the opening of the first fluid channel 8 facing the first electrode 4 of the electrolyte member 3 on the bottom surface of the recess of the base 6. One end is in contact with the entire area of the surface of the part to be touched. As a result, the contact area between the first electrode 4 of the electrolyte member 3 and the first wiring conductor 10 can be increased, so that an increase in electrical resistance and poor contact can be effectively suppressed, and high power generation efficiency is achieved. The fuel cell 1 can be provided.

  Further, the first wiring conductor 10 is desirably formed so as to be higher than the bottom surface of the concave portion of the base 6 by 10 μm or more so that the first wiring conductor 10 is easily brought into contact with the first electrode 4. In order to obtain this height, as described above, the printing conditions may be set to be thick when the conductor paste is formed by printing and coating. In addition, it is desirable that a plurality of first wiring conductors 10 be arranged opposite to the first electrode 4 to reduce electrical loss due to the first wiring conductors 10. The diameter is preferably 50 μm or more.

  Further, the second wiring conductor 11 is a portion where the second electrode 5 of the electrolyte member 3 is in contact with the periphery of the opening of the second fluid flow path 9 facing the second electrode 5 of the electrolyte member 3 on the lower surface of the lid body 7. It is preferable that one end is disposed over the entire area of the surface and the other end is led out to the outer surface of the lid body 7. Thereby, since the contact area between the second electrode 5 of the electrolyte member 3 and the second wiring conductor 11 can be increased, an increase in electrical resistance and poor contact can be effectively suppressed, and high power generation efficiency was achieved. The fuel cell 1 can be provided.

  Similar to the first wiring conductor 10, the second wiring conductor 11 is also formed integrally with the lid body 7, and the concave portion of the lid body 7 is provided so that the second wiring conductor 11 can be easily brought into contact with the second electrode 5. It is desirable to form it 10 μm or more higher than the bottom surface. In order to obtain this height, as described above, the printing conditions may be set to be thick when the conductor paste is formed by printing and coating. A plurality of second wiring conductors 11 are preferably arranged opposite to the second electrode 5 to reduce the electrical loss due to the second wiring conductors 11. The through-hole of the lid 7 of the second wiring conductor 11 is φ50 μm. It is preferable to set it as the above diameter.

  The first wiring conductor 10, the second wiring conductor 11, and the external connection terminal are nickel, copper, gold, and the like, which have good conductivity on the exposed surface and good corrosion resistance and wettability with the brazing material. When a metal such as platinum and palladium is deposited by plating, electrical connection between these conductors and a mother board for forming an electronic circuit that is a main component of the electronic device can be improved.

  The first and second wiring conductors 10 and 11 and the first and second electrodes 4 and 5 are electrically connected to each other by sandwiching the electrolyte member 3 between the base 6 and the lid body 7. What is necessary is just to carry out by the structure of making the 2nd wiring conductors 10 and 11 and the 1st and 2nd electrodes 4 and 5 press-contact and electrically connecting.

  In addition, a first fluid channel 8 and a second fluid channel 9 are disposed on the bottom surface of the recess of the base 6 facing the first electrode 4 and the second electrode 5 and the bottom surface of the lid body 7, respectively. The first fluid channel 8 is formed over the outer surface of the base 6, and the second fluid channel 9 is formed over the outer surface of the lid 7. These first and second fluid flow paths 8 and 9 are electrolyte members such as a reformed gas rich in fuel gas, such as hydrogen, or an oxidizing gas, such as air, by through holes or grooves formed in the base 6 and the lid 7, respectively. 3 is provided as a passage for the fluid supplied to 3 or as a passage for the fluid discharged from the electrolyte member 3 after the reaction, such as water generated by the reaction.

  The through holes or grooves formed in the base body 6 and the lid body 7 as the first fluid flow path 8 and the second fluid flow path 9 are configured so that fluid such as fuel gas or oxidizing gas is evenly supplied to the electrolyte member 3. Depending on the specifications of the fuel cell 1, the diameter and number of through holes, or the width, depth and arrangement of the grooves may be determined.

  In the fuel cell container 2 and the fuel cell 1 of the present invention, the first fluid channel 8 and the second fluid channel 9 preferably have a diameter of 0.1 mm in order to allow fluid to flow through the electrolyte member 3 with uniform pressure. It is preferable that the holes have the above diameters and are arranged with a constant interval.

  In this way, the first fluid flow path 8 is made to face the lower main surface on which the first electrode 4 of the electrolyte member 3 is formed, and the second fluid flow is made to face the upper main surface on which the second electrode 5 is formed. By forming the passage 9, fluid can be exchanged between the lower and upper main surfaces of the electrolyte member 3 and the first and second fluid flow paths 8 and 9, and the fluid is supplied through the respective flow paths. Will be discharged. For example, in the case of supplying a gas as a fluid, it is possible to prevent the partial pressure of the gas supplied to the first electrode 4 and the second electrode 5 of the electrolyte member 3 from decreasing, and a predetermined stable output voltage. Can be obtained. Further, since the supplied gas partial pressure is stabilized, the internal pressure of the fuel cell 1 is made uniform, and as a result, the thermal stress generated in the electrolyte member 3 can be suppressed, so that the reliability of the fuel cell 1 is improved. Can be made.

  In the present invention, at least one of the first wiring conductor 10 and the second wiring conductor 11 is formed around the opening of the first fluid channel 8 on the bottom surface of the recess or on the second fluid channel 9 on the lower surface of the lid 7. Is formed in contact with the first electrode 4 or the second electrode 5 and the periphery of the opening of the first fluid channel 8 or the second fluid channel 9 is the first fluid channel. 8 has a pore 12 that communicates with the first electrode 4, or has a pore 12 that communicates with the second fluid flow path 9 and the second electrode 5. Thereby, not only the fluid is directly supplied to the electrolyte member 3 from the first fluid channel 8 and the second fluid channel 9, but also the porous pores 12 of the first wiring conductor 10 and the second wiring conductor 11. Since the fluid is supplied to the electrolyte member 3 through the first electrode 4 and the second electrode 5, the area where the air and the fuel gas are in contact with each other can be increased, and the electrochemical reaction of the air and the fuel gas is promoted to generate power. Efficiency can be made higher.

  Furthermore, by adjusting the pore diameter and the porosity, the fuel is supplied to the first electrode 4 and the second electrode 5 according to the type and supply method of the fuel such as hydrogen gas and methanol and the oxidizing gas such as oxygen gas. It becomes possible to adjust the supply speed of the fuel and the oxidant gas easily and accurately, and the power generation efficiency can be made extremely high.

  Such a porous first wiring conductor 10 or a porous second wiring conductor 11 is produced as follows. For example, when the first wiring conductor 10 or the second wiring conductor 11 is made of tungsten and / or molybdenum, a paste in which a tungsten powder or a molybdenum powder and a solvent such as ethyl cellulose or terpineol are mixed is used. A pore forming conductor paste is obtained by adding and mixing an organic substance such as terephthalic acid which does not dissolve and volatilizes during firing. Then, the pore-forming conductor paste is printed and laminated and pressure-bonded at predetermined positions on the ceramic green sheet to be the base 6 and the lid 7 by the same method as the fuel cell container manufacturing method described above, and then fired. The first wiring conductor 10 or the second wiring conductor 11, and the pores 12 around the opening of the first fluid flow path 8 or the second fluid flow path 9 communicating the first fluid flow path 8 and the first electrode 4; Alternatively, the second fluid flow path 9 and the second electrode 5 can be made porous having pores 12 communicating with each other.

  In the fuel cell container 2 of the present invention, preferably, the base body 6 or the lid body 7 has a portion in contact with the porous first wiring conductor 10 or a portion in contact with the porous second wiring conductor 11 in the first. It is porous having pores 12 that communicate between the first fluid flow path 8 and the first wiring conductor 10, or is porous having pores 12 that communicate between the second fluid flow path 9 and the second wiring conductor 11. It is good to be. Thus, the fluid is supplied to the electrolyte member 3 not only through the porous communication holes 12 of the first wiring conductor 10 and the second wiring conductor 11 but also through the porous communication holes 12 of the base body 6 and the lid body 7. Therefore, the fluid can be supplied to the electrolyte member 3 through the pores 12 better, and the power generation efficiency can be further improved.

  In addition, since such a porous material has a three-dimensional network structure and isotropic in mechanical properties, the first wiring conductor 10 and the second wiring conductor 11 of the base body 6 and the lid 7 are disposed. The reliability in the mechanical characteristics and fluid permeation characteristics in the formed portion can be increased.

  Such a base body 6 or lid having pores 12 for communicating the first fluid flow path 8 and the first wiring conductor 10 or pores 12 for communicating the second fluid flow path 9 and the second wiring conductor 11. 7 is produced as follows. For example, when the base body 6 or the lid body 7 is made of an aluminum oxide sintered body, the rare earth oxide powder or the sintering aid is first added to the aluminum oxide powder in the same manner as the above-described method for manufacturing the base body 6 or the lid body 7. Are added and mixed to adjust the raw material powder of the aluminum oxide sintered body. Next, an organic binder and a dispersing agent are added to the raw material powder of the aluminum oxide sintered body and mixed to form a paste.

  Next, as a pore-forming material, for example, an acrylic resin, wax, rubber or the like that is burned out or eluted by heating, or a metal such as Sn or Pb that is eluted or decomposed by heat or acid is added and mixed. To do.

  The pore-forming material is preferably spherical from the viewpoint that the particle diameter, volume, and distribution thereof are uniform, and adjustment to a desired pore diameter and porosity is easy.

  A pore-forming material-containing green sheet having a predetermined thickness is prepared from the paste obtained by mixing the pore-forming materials thus obtained by a doctor blade method or the like. Then, the pore-forming material-containing green sheet is processed into a predetermined shape using a mold, a laser, or the like.

  The pore-forming green sheet obtained as described above is laminated and pressure-bonded to predetermined positions of the base body 6 and the lid body 7 in the same manner as the method for producing the fuel cell container described above, and the pore-forming conductor is fixed to the predetermined positions. By baking after the paste is applied, the base body 6 or the lid body 7 is connected to the pores 12 communicating the first fluid flow path 8 and the first wiring conductor 10, or the second fluid flow path 9 and the second wiring. It can be made porous having pores 12 communicating with the conductor 11.

  As shown in FIG. 2B, the first wiring conductor 10 in contact with the first electrode 4 or the second wiring conductor 11 in contact with the second electrode 5 is porous, and the base 6 and When the periphery of the opening of the first fluid channel 8 or the second fluid channel 9 of the lid 7 is porous, the periphery of the opening of the first fluid channel 8 or the second fluid channel 9 is Compared with the dense case, the amount of fluid supplied to the electrolyte member 3 is further increased. Therefore, the electrochemical reaction of air and fuel gas can be promoted, and the power generation efficiency can be further increased.

  Further, as shown in FIG. 2A, the first wiring conductor 10 in contact with the first electrode 4 or the second wiring conductor 11 in contact with the second electrode 5 is porous, and the base 6 and When the periphery of the opening of the first fluid channel 8 or the second fluid channel 9 of the lid 7 is dense, the fluid is supplied to the electrolyte member 3 through the porous communicating pores 12. In addition, since the base body 6 or the lid body 7 is dense and has high strength, it is effective particularly when mechanical reliability against impact or the like is required.

Moreover, it is preferable that the inner wall of the first fluid channel 8 or the second fluid channel 9 is covered with a hygroscopic material. Since water vapor, water, and the like generated by the electrochemical reaction in the electrolyte member 3 can be absorbed and removed by the hygroscopic material, the first and second fluid flow paths 8, 9 serving as air flow paths are effectively blocked. Can be prevented. Therefore, it is possible to effectively prevent the surfaces of the electrodes of the first and second electrodes 4 and 5 from being covered with water (H ₂ O), and in the atmosphere through the first and second fluid flow paths 8 and 9. Therefore, air can be effectively supplied as an oxidizing gas, so that the electrochemical reaction in the electrolyte member 3 can be promoted and highly efficient power generation can be performed.

  The hygroscopic material may be a material that easily absorbs water, such as silica gel, alumina, white clay, activated carbon, paper, wood powder, etc. In particular, inorganic powders such as silica gel, alumina, white clay, Since the water absorption area can be easily adjusted by adjusting the thickness, it is preferable in that the desired moisture absorption characteristics can be easily obtained.

  When the hygroscopic material is applied to the inner walls of the first fluid channel 8 and the second fluid channel 9, the air flow uniformity from the atmosphere through the first and second fluid channels 8 and 9 is maintained. In addition, it is preferable to apply a hygroscopic material to all the first fluid channels 8 and the second fluid channels 9, and the thickness of the hygroscopic material is such that pressure loss is reduced when supplying air as an oxidizing gas. Since it is necessary to reduce the influence, for example, when it is deposited on the first and second fluid flow paths 8 and 9, the thickness is 10% or less with respect to the opening area in these cross sections. preferable.

  Further, in order to promote the evaporation of moisture from the hygroscopic material by the air flow, it is preferable to apply the hygroscopic material to the entire inner walls of the first fluid channel 8 and the second fluid channel 9. Thus, when the fuel cell container 2 and the fuel cell 1 of the present invention are used for a small type such as a portable direct methanol fuel cell (DMFC), for example, 10 ml of methanol can be operated for several tens of hours. In addition, the amount of water produced at that time is as small as 1 ml per 1 g of methanol consumed. Therefore, the water absorbed by the hygroscopic material becomes an amount of water that can be sufficiently evaporated by blowing air using a fan, and can be continuously operated.

  With the above configuration, a small and robust fuel cell container 2 capable of accommodating the electrolyte member 3 as shown in FIG. 1 is obtained, and the fuel cell 1 of the present invention capable of high efficiency control is obtained.

  Next, the electronic apparatus of the present invention having the fuel cell 1 as a power source will be described.

  Since the electronic device of the present invention has the fuel cell 1 as a power source as described above, it is small, low-profile, and has a long period of time with the features of the fuel cell container 2 of the present invention as described above. An electronic device with excellent safety and convenience that can be stably operated can be obtained.

  Further, when the fuel cell 1 having a power source is provided with terminals for external connection (a positive terminal and a negative terminal) on at least one of the base body 6 and the lid body 7, the circuit board of the electronic device can be easily electrically connected. Connection is possible and attachment / detachment is free. Therefore, the fuel cell 1 can be easily replaced with a new one without using a facility equipped with special safety equipment, and the convenience of the electronic device can be enhanced.

  Furthermore, since a metal layer can be formed in various shapes and electrical characteristics by the metallization method or the like inside the base 6 of the fuel cell container 2, electrons functioning as resistance, capacitance, inductance, etc. inside the base 6. Circuit elements can be formed. Therefore, for example, when a large capacity capacitor is formed in parallel with the fuel cell 1 and the current output from the fuel cell 1 becomes insufficient, the insufficient current is compensated and the target output current is compensated. It is possible to ensure a current supply according to the above. In addition, since a booster circuit can be formed, a voltage necessary for the electronic device can be secured.

  In addition, when forming resistance, a capacitance, and an inductance in the inside of the base | substrate 6 in this way, it is preferable that the base | substrate 6 consists of glass ceramics.

  Specifically, the electronic device of the present invention includes portable electronic devices such as mobile phones, PDAs (Personal Digital Assistants), toys such as digital cameras, video cameras, and game machines, and notebook PCs (personal computers). ) And other portable printers, fax machines, televisions, communication equipment, audio-video equipment, electric appliances such as electric fans, and electronic equipment such as electric tools.

  In recent years, these electronic devices have been added with a function of displaying a moving image using a liquid crystal display device or the like. Such a video display consumes a large amount of power, so that an electronic device using a conventional storage battery cannot be operated in a short time, whereas the electronic device of the present invention supplies a very long time power. The fuel cell 1 that can be used is mounted, and even if a moving image is displayed, long-time operation is possible.

  For example, in the case of a mobile phone, a central processing unit (CPU), a control unit, a random access memory (RAM), a read-on memory (ROM), an input unit for inputting data operated by a user to the CPU, The antenna, the signal received by the antenna is demodulated and supplied to the control unit, the radio unit that modulates the signal supplied from the control unit and transmitted from the antenna, and the sound is generated based on the ringing signal from the control unit A speaker, a light emitting diode (LED) that is turned on, off, or blinking under the control of the control unit, a display unit that displays information by a signal from the control unit, a vibrator that vibrates by a drive signal from the control unit, and a user The voice signal from the control unit is transmitted to the control unit, the voice signal from the control unit is converted into voice and output, and the power source that supplies power to each unit The fuel cell 1 and the fuel cell container 2 of the present invention are incorporated in the power supply unit, so that the fuel cell 1 and the fuel cell container 2 are excellent in compactness, simplicity and safety. In addition, since it is possible to supply power for a long period of time with an even supply of fuel and high-efficiency electrical connection, the mobile phone can be reduced in size, height and weight.

  Also, considering that recent mobile phones are sufficient in terms of miniaturization and low profile, in the space generated by miniaturizing and reducing the height of the fuel cell 1 in this way, for example, a camera or video Electronic components having functions other than the telephone function such as the above can be newly incorporated, and further multi-function can be performed.

  Further, instead of newly incorporating electronic components, an impact absorbing material, an impact preventing member or the like can be provided so as to protect the main electronic circuit. In this case, it is also possible to have a structure that can make the impact resistance when a shock is applied to the mobile phone main body due to dropping or the like, the waterproofness when used in rain, etc. stronger than before.

  In addition, by making it possible to reduce the size of the electric circuit inside the mobile phone body, there are fewer restrictions on the external shape of the mobile phone body, for example, making the mobile phone a shape that is easy for an elderly person or child to grip. It becomes possible to make the outer shape excellent in design.

  Further, in the case where the structure of the power source is a structure in which the fuel cell 1 and the fuel cell container 2 are detachable as described above, if the spare fuel cell 1 and the fuel cell container 2 are prepared, When the battery runs out, etc., the spare fuel cell 1 and the fuel cell container 2 can be easily replaced, or the fuel cell 1 can be taken out and replenished or replaced, so that calls can be continued. Therefore, it is more convenient than a conventional battery that uses a storage battery as a power source.

  In addition, since the replaced (used) fuel cell 1 can be reused immediately by replenishing fuel, it is more convenient than charging, and resources can be effectively used. In addition, there is an advantage that it can be used in an emergency such as a long-term power outage due to a natural disaster or the like or outdoors.

  In the case of a notebook PC (personal computer), a personal computer main body, a first housing containing a keyboard for inputting predetermined data to the personal computer main body, data input by the keyboard, or a personal computer And a second housing containing a display for displaying data processed by the main body, the second housing is attached to the first housing so as to be openable and closable, and power is supplied to each part. The power supply unit is configured to be provided in the first casing, and the fuel cell 1 and the fuel cell container 2 are incorporated in the power supply unit. In this case, as in the above-described mobile phone, the fuel cell 1 and the fuel cell container 2 incorporated in the electronic device of the present invention are excellent in compactness, simplicity, and safety, and are evenly supplied with fuel and highly efficient electricity. Since long-term power supply can be achieved through connection, the laptop PC (personal computer) can be made smaller, lower in profile, lighter in weight and multi-functional, and the display can be increased in size and resolution. Correspondingly, a large current can be supplied stably over a long period of time, the display is easy to see, and the notebook PC (personal computer) has high convenience, such as a small weight and volume when carrying. It can be.

  If the fuel cell 1 and the fuel cell container 2 are detachable from the power source, the spare fuel cell 1 and the fuel cell container 2 of the present invention are prepared. In a situation where only a secondary battery such as a moving body such as a passenger aircraft is used, there is an advantage that it is possible to supply power for a much longer time than in the past. Further, even when used in a public place as described above, since it is excellent in safety, it can be used without being restricted and is extremely convenient.

  It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the present invention. For example, the first fluid channel 8 and the second fluid channel 9 may be provided with an inlet from the side surface of the base body 6 or the lid body 7 in order to reduce the thickness of the entire fuel cell 1. According to this, it is effective in reducing the size especially for portable electronic devices. Furthermore, about the 1st and 2nd wiring conductors 10 and 11, you may arrange | position so that the other end derived | led-out to the outer surface of the base | substrate 6 and the cover body 7 may be pulled out to the side surface of the same side, respectively. According to this, wiring and flow paths can be integrated on one side of the fuel cell, facilitating miniaturization and protection of joints to the outside, enabling a highly reliable design, and The fuel cell can be operated stably.

  A plurality of electrolyte members 3 are accommodated in the recesses of the base 6 and are electrically connected by the first and second wiring conductors 10 and 11 to obtain a high voltage or large current output as a whole. You may do it.

  FIG. 3 is a sectional view showing another example of the fuel cell container and the fuel cell according to the present invention. At least one of the first fluid channel 8 ′ and the second fluid channel 9 ′ is provided. An opening 13 in which a groove-like opening is formed in a distorted manner so as to face the lower main surface or the upper main surface of the electrolyte member 3 on the bottom surface of the concave portion of the base body 6 'or the lower surface of the lid body 7'; A fluid introduction portion 15 formed from the opening 13 to the outer surface of the base body 6 ′ or the lid body 7 ′, and a fluid formed from the other opening portion 13 or the connecting portion 14 to the outer surface of the base body 6 ′ or the lid body 7 ′. The discharge unit 16 may be configured.

  Thereby, the supply and discharge of the fuel gas and the oxidant gas to the plurality of electrolyte members 3 arranged in a plane are connected by a three-dimensional fluid flow path formed inside the base body 6 ′ or the lid body 7 ′. Provided is a fuel cell 1 ′ that can be safely and electrochemically and efficiently removed because it can be airtight without leaking to the outside using the portion 14, the introduction portion 15, and the discharge portion 16. can do.

  In addition, the electrolyte member 3 is accommodated in each recess of the base 6 ′ having a plurality of recesses, the third wiring conductor 17 is disposed between the end portions of the adjacent recesses, and the first electrode 4 of the plurality of electrolyte members 3 is disposed. Or the first electrode 4 and the second electrode 5 are electrically connected, and the first wiring conductor 10 ′ and the second wiring conductor 10 ′ are connected to the electrolyte member 3 disposed at both ends so as to extract the output as a whole. The wiring conductors 11 ′ may be electrically connected to each other.

  Thereby, the fluid flow path between the plurality of electrolyte members 3 can be freely formed and combined three-dimensionally by the connecting portion 14, the introducing portion 15, and the discharging portion 16, depending on the arrangement of the electrolyte members 3. Thus, the fluid flow path can be formed with high density while maintaining the uniformity of the fuel supply, and the fuel cell 1 'can be reduced in height and size.

  Furthermore, since the first to third wiring conductors 10 ′, 11 ′, and 17 can be freely wired three-dimensionally, a plurality of electrolyte members 3 can be arbitrarily connected in series or in parallel. As a result, the overall output voltage and output current can be adjusted efficiently, and therefore the fuel cell container 2 ′ that can take out the electricity electrochemically generated by the electrolyte member 3 to the outside. And a fuel cell 1 ′.

  In addition, this invention is not limited to the example of the above embodiment, A various change may be added in the range which does not deviate from the summary of this invention.

It is sectional drawing which shows an example of embodiment of the fuel cell using the container for fuel cells of this invention. (A) is the principal part expanded sectional view of the fuel cell of FIG. 1, (b) is the principal part expanded sectional view which shows the other example of embodiment of the fuel cell using the container for fuel cells of this invention. It is sectional drawing which shows the other example of embodiment of the fuel cell using the container for fuel cells of this invention. It is sectional drawing of the conventional fuel cell.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1 ': Fuel cell 2, 2': Fuel cell container 3: Electrolyte member 4: 1st electrode 5: 2nd electrode 6, 6 ': Base | substrate 7, 7': Lid body 8, 8 ': 1st Fluid channel 9, 9 ': Second fluid channel 10, 10': First wiring conductor 11, 11 ': Second wiring conductor 12: Pore

Claims (4)

A base made of ceramics having a recess on the upper surface for accommodating an electrolyte member having first and second electrodes on the lower and upper main surfaces, respectively, and a bottom surface of the recess facing the lower main surface of the electrolyte member A first fluid channel formed over the outer surface of the base, and a first wiring in which one end is disposed on the bottom surface of the recess facing the first electrode of the electrolyte member and the other end is led to the outer surface of the base A conductor, a lid that covers and attaches to the upper surface of the base around the recess, and seals the recess hermetically; and the lid that faces the upper main surface of the electrolyte member. One end is disposed on the second fluid flow path formed from the lower surface to the outer surface of the lid, the lower surface of the lid facing the second electrode of the electrolyte member, and the other end on the outer surface of the lid A second wiring conductor led out And at least one of the first wiring conductor and the second wiring conductor is disposed around the opening of the first fluid channel on the bottom surface of the recess or around the opening of the second fluid channel on the bottom surface of the lid. The first fluid channel or the second fluid channel is formed so as to be in contact with the first electrode or the second electrode, and the first fluid channel and the first fluid channel are arranged around the first fluid channel and the first fluid channel. A fuel cell container characterized by being porous having pores communicating with an electrode or having pores communicating with the second fluid flow path and the second electrode. In the base body or the lid body, a portion in contact with the porous first wiring conductor or a portion in contact with the porous second wiring conductor communicates the first fluid flow path and the first wiring conductor. 2. The fuel cell container according to claim 1, wherein the fuel cell container is porous having pores, or is porous having pores communicating the second fluid flow path and the second wiring conductor. 3. . The said electrolyte member is accommodated in the said recessed part of the container for fuel cells of Claim 1 or Claim 2, The said lower side and upper side main surface of the said electrolyte member are between the said 1st and 2nd fluid flow paths. The first and second electrodes are arranged to be able to communicate with each other, and the first and second electrodes are electrically connected to the first and second wiring conductors, respectively, and the recess is formed on the upper surface of the base around the recess. A fuel cell comprising a cover and a cover attached. An electronic apparatus comprising the fuel cell according to claim 3 as a power source.

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