JP2010157359A - Fuel cell and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell capable of removing carbon dioxide generated and preventing discharge of unused fuel to the outside, and to provide an electronic equipment having the same. <P>SOLUTION: A groove 22 is provided on a face opposed to an anode electrode of an anode side plate member 20. The groove 22 is formed from inside the region opposed to the anode electrode to the exit 22A on the side face of the anode side plate member 20. Carbon dioxide generated by electrochemical reaction of a fuel F is discharged through the groove 22. Since the groove 22 does not penetrate through the anode side plate member 20, the unused fuel F in the groove 22 passes through the anode electrode face by all means. Thus, the fuel F is sufficiently consumed and prevented from being discharged to the outside of the system without reaction, and power generation efficiency is improved. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fuel cell that generates power by reaction of methanol or the like with oxygen, and an electronic device including the same.

  Application of fuel cells is being studied as a power source for small electronic devices such as portable personal computers. As the fuel for the fuel cell, it is desirable to use a liquid fuel (for example, methanol) having a high energy density.

In some cases, the fuel is supplied to the anode electrode as a diluted liquid fuel. However, a vaporization type fuel cell in which vaporized fuel is supplied to the anode electrode without being diluted has been studied (for example, see Patent Document 1). .). In Patent Document 1, vaporized fuel is once stored in a vaporized fuel storage chamber and then supplied to an anode electrode. In addition, an exhaust hole is provided in the side wall of the vaporized fuel storage chamber for discharging generated gas containing carbon dioxide generated in the anode electrode to the outside of the battery.
JP 2007-80658 A

  However, in Patent Document 1, since the exhaust hole is provided in the vaporized fuel storage chamber, unreacted fuel may be discharged, and power generation efficiency may be reduced.

  The present invention has been made in view of such problems, and an object thereof is to provide a fuel cell capable of removing generated carbon dioxide and suppressing discharge of unused fuel, and an electronic apparatus including the same. It is in.

  A fuel cell according to the present invention includes a power generation unit having an electrolyte between a cathode electrode and an anode electrode, and an anode side plate member provided on the anode electrode side of the power generation unit, and the anode side plate member corresponds to the anode electrode. A through hole reaching the opposite surface from the surface facing the anode electrode, and a groove formed in the surface facing the anode electrode from the region corresponding to the anode electrode to the outlet of the side surface It is what has.

  An electronic apparatus according to the present invention includes the fuel cell according to the present invention.

  In the fuel cell of the present invention or the electronic device of the present invention, the anode side plate-shaped member has a groove on the surface facing the anode electrode, and this groove extends from the region corresponding to the anode electrode to the outlet on the side surface. Since it is formed, the carbon dioxide produced by the electrochemical reaction of the fuel is discharged via the groove. Further, since the groove does not penetrate the anode side plate-like member, the unused fuel in the groove always passes through the anode electrode surface. Therefore, the fuel is sufficiently consumed, and it is suppressed that the fuel is discharged out of the system without being reacted.

  According to the fuel cell of the present invention or the electronic device of the present invention, a groove is formed on the surface of the anode side plate-shaped member facing the anode electrode, and the groove is formed from the region corresponding to the anode electrode to the outlet on the side surface. Since it did in this way, while removing a carbon dioxide via this groove | channel, it becomes possible to suppress that a fuel is discharged | emitted out of a system with unreacted.

  Hereinafter, embodiments of the present invention will be described in detail.

  FIG. 1 shows a sectional configuration of a fuel cell according to an embodiment of the present invention, and FIG. 2 shows an exploded view of the fuel cell shown in FIG. The fuel cell 1 is used as a power source for portable electronic devices such as a mobile phone and a notebook PC (Personal Computer), for example, and has an anode side plate member 20 and a cathode side plate member 30 on both sides of the power generation unit 10. It has.

  The power generation unit 10 is a direct methanol fuel cell that generates power by reaction of methanol and oxygen, and has one electrolyte membrane 13 between a cathode electrode (oxygen electrode) 11 and an anode electrode (fuel electrode) 12 or A plurality of (for example, six in FIG. 2) unit cells 10A to 10F are included. The unit cells 10A to 10F are arranged in, for example, 3 rows × 2 columns in the in-plane direction, and have a planar laminated structure electrically connected in series by a connection member (not shown). The gaps between the unit cells 10A to 10F are sealed with a sealing material 14 made of a material having high alcohol resistance such as fluororubber or PP (polypropylene).

  The cathode electrode 11 and the anode electrode 12 are, for example, quadrilateral, and a current collector made of carbon paper or the like, a microporous layer (MPL), platinum (Pt), ruthenium (Ru), or the like. And a catalyst layer including a catalyst. The catalyst layer is made of, for example, a material in which a carrier such as carbon black carrying a catalyst is dispersed in a polyperfluoroalkylsulfonic acid proton conductive material or the like. A gas diffusion layer (GDL; Gas Diffusion Layer) may be provided between the current collector and the microporous layer (outside the microporous layer) as necessary. Note that an air supply pump (not shown) may be connected to the cathode electrode 11, communicate with the outside through an opening (not shown) provided in a connection member (not shown), and air by natural ventilation. That is, oxygen may be supplied.

The electrolyte membrane 13 is made of, for example, a proton conductive material having a sulfonic acid group (—SO ₃ H). Examples of proton conducting materials include polyperfluoroalkylsulfonic acid proton conducting materials (for example, “Nafion (registered trademark)” manufactured by DuPont), hydrocarbon proton conducting materials such as polyimide sulfonic acid, or fullerene proton conducting materials. Is mentioned.

  The anode side plate-like member 20 and the cathode side plate-like member 30 are respectively provided on the anode electrode 12 side and the cathode electrode 11 side of the power generation unit 10, and are made of, for example, an aluminum plate or a stainless steel plate having a thickness of about 1 mm. Between the power generation unit 10 and the cathode side plate member 30, for example, a porous film 15 such as polyethylene is provided for moisture retention. A gas-liquid separation membrane 16 made of, for example, a porous fluororesin and polyester is provided between the power generation unit 10 and the anode side plate member 20.

  A fuel supply unit 40 to which, for example, methanol is supplied as the fuel F is disposed outside the anode side plate member 20. A fuel supply hole 41 for supplying fuel F from a fuel tank (not shown) is formed in the fuel supply unit 40 at positions corresponding to the unit cells 10A to 10F. A fuel vaporization chamber 42 for vaporizing the fuel F is provided between the fuel supply unit 40 and the anode side plate member 20.

  The gap G of the fuel vaporizing chamber 42 is preferably, for example, 0.5 mm or more. This is because volume expansion when the fuel F is vaporized can be absorbed and a space for uniform diffusion of the fuel F can be secured. However, if the gap G is too wide, the amount of heat transfer from the power generation unit 10 to the fuel supply unit 40 is reduced, and the fuel F cannot be vaporized smoothly. Therefore, the gap G is preferably 3 mm or less, for example.

  3 shows a planar configuration of the anode side plate-like member 20 as viewed from the side facing the anode electrode 12, and FIG. 4 shows an enlarged part thereof. The anode side plate-like member 20 has through holes 21 and grooves 22 in six quadrilateral regions corresponding to the anode electrodes 12 of the unit cells 10A to 10F.

  The through-hole 21 is for circulating the fuel F, reaches the surface on the opposite side from the surface facing the anode electrode 12, and communicates with the fuel vaporization chamber 42. Further, the through hole 21 is disposed over the entire quadrilateral region corresponding to the anode electrode 12. Thereby, the fuel F can be supplied uniformly and the output can be improved. The opening ratio of the through-hole 21 with respect to the area of the anode electrode 12 is preferably 30% or more, and more preferably 40% or more.

  The groove 22 is formed on the surface facing the anode electrode 12 from the region corresponding to the anode electrode 12 to the outlet 22 </ b> A on the side surface of the anode side plate member 20. Thereby, in this fuel cell, generated carbon dioxide can be efficiently removed and the discharge of unused fuel F can be suppressed.

  The groove 22 may be communicated with the through hole 21 as shown in FIG. 4 or may not be communicated with the through hole 21 as shown in FIG. In the case of communication, the generated carbon dioxide is discharged to the groove 22 through the through hole 21. On the other hand, when not communicating, the generated carbon dioxide is discharged into the groove 22 via the microporous layer (MPL) or the gas diffusion layer (GDL) of the anode electrode 12. Since it is not influenced by the change of the pressure loss by the water distribution etc. in a microporous layer (MPL), it is desirable to communicate. However, when the pressure loss is sufficiently low as a result of optimization of the microporous layer (MPL) and the gas diffusion layer (GDL), it is not necessary to communicate with each other.

  The groove 22 is preferably provided in a direction intersecting the through hole 21. Specifically, the groove 22 is preferably provided along the side of the quadrangular region corresponding to the anode electrode 12, and the through hole 21 is preferably provided in a direction orthogonal to the groove 22. The vaporized fuel F and the generated carbon dioxide can cause a flow from the opposite side to the side where the groove 22 is provided, and the carbon dioxide is removed more efficiently, while the fuel F is supplied to the anode electrode 12. It is because it can supply.

  The groove 22 is closed by the anode electrode 12 and the sealing material 14, and is opened to the atmosphere at the outlet 22A. The groove 22 preferably has a throttle 22B having a smaller cross-sectional area than other portions in order to apply pressure loss in the vicinity of the outlet 22A. This is because the flow rate in the groove 22 can be suppressed, the reaction time on the surface of the anode electrode 12 can be increased, and the unreacted fuel F can be further prevented from being discharged out of the system. Further, when the power generation unit 10 is composed of a plurality of unit cells 10A to 10F, the pressure loss in each unit cell 10A to 10F can be made uniform, and the fuel supply to each unit cell 10A to 10F is made uniform. It is because it can be performed.

  Furthermore, it is preferable that the anode-side plate-like member 20 has an auxiliary groove 23 that allows the through holes 21 to communicate with each other on the surface facing the anode electrode 12. This is because the vaporized fuel F can be diffused and supplied more widely on the surface of the anode electrode 12, and an electrochemical reaction can be caused more efficiently.

  In the anode side plate-like member 20, a portion where none of the through hole 21, the groove 22, and the auxiliary groove 23 is formed is left at a certain ratio or more (for example, about 20% to 40% of the area of the anode electrode 12). Preferably it is. Further, the openings such as the through-hole 21, the groove 22, and the auxiliary groove 23 are uniformly distributed (there is no integrated opening, that is, the maximum dimension of the opening is that of the anode electrode 12). Preferably less than one-fifth of the dimension). By doing in this way, the contact area of the anode side plate-shaped member 20 and the anode electrode 12 can be enlarged, and the compressive force to the electric power generation part 10 by the anode side plate-shaped member 20 can be ensured uniformly. Therefore, the interfacial resistance between the cathode electrode 11 or the anode electrode 12 and the electrolyte membrane 13, or the interfacial resistance between the gas diffusion layer (GDL) and the microporous layer (MPL) in the cathode electrode 11 or the anode electrode 12, microporous An increase in interface resistance between the layer (MPL) and the catalyst layer (both not shown) can be suppressed.

  The cathode side plate-shaped member 30 has a through hole 31 that reaches the surface on the opposite side from the surface facing the cathode electrode 11 in order to allow air (oxygen) as an oxidant to pass therethrough. FIG. 6 illustrates the configuration of the cathode side plate-like member 30 as viewed from the side facing the cathode electrode 11. The through hole 31 is provided in a region corresponding to the cathode electrode 11 and the shape thereof is, for example, a large number of parallel long holes (slits), but is not necessarily limited thereto. In FIG. 6, one of the six quadrilateral regions corresponding to the cathode electrode 11 of the cathode side plate member 30 is shown.

  The fuel cell 1 can be manufactured as follows, for example.

  First, the electrolyte membrane 13 made of the above-described material is sandwiched between the cathode electrode 11 and the anode electrode 12 made of the above-described material, and joined by thermocompression bonding to form unit cells 10A to 10F.

  Next, the six unit cells 10A to 10F are arranged in 3 rows × 2 columns and electrically connected in series by a connecting member (not shown). Note that a sealing material (not shown) made of the above-described material is provided on the periphery of the electrolyte membrane 13, and this sealing material is fixed to a connection member (not shown) by screwing.

  Subsequently, the anode side plate-like member 20 and the cathode side plate-like member 30 made of the above-described materials are prepared, and the through-hole 31 is formed in the cathode-side plate-like member 30 and the through-hole is formed in the anode-side plate-like member 20 by processing using, for example, an end mill. 21, a groove 22 and an auxiliary groove 23 are formed. In mass production, it may be formed by etching and diffusion bonding, or injection molding.

  After that, the cathode side plate member 30 is arranged on the cathode electrode 11 side of the connected unit cells 10A to 10F, and the anode side plate member 20 and the fuel supply unit 40 are arranged on the anode electrode 12 side. Thus, the fuel cell 1 shown in FIGS. 1 and 2 is completed.

  In the fuel cell 1, the fuel F is supplied to the anode electrodes 12 of the unit cells 10 </ b> A to 10 </ b> F through the through holes 21 of the anode side plate-like member 20, and protons and electrons are generated by the reaction. Protons move to the cathode electrode 11 through the electrolyte membrane 13 and react with electrons and oxygen to generate water. Thereby, a part of the chemical energy of the fuel F, that is, methanol, is converted into electric energy, and is extracted from the power generation unit 10 as an output current. The output current and the electromotive force generated by the power generation unit 10 are supplied to an external load (not shown), and the load is driven.

  Here, a groove 22 is provided on the surface facing the anode electrode 12 of the anode side plate-like member 20, and this groove 22 is formed from the region corresponding to the anode electrode 12 to the outlet 22A on the side surface. Carbon dioxide generated by the electrochemical reaction of the fuel F is discharged via the groove 22. Therefore, an increase in carbon dioxide concentration and an increase in internal pressure in the vicinity of the anode electrode 12 are avoided, and output and power generation efficiency can be improved. Further, since the groove 22 does not penetrate the anode side plate member 20, the unused fuel F in the groove 22 always passes through the surface of the anode electrode 12. Therefore, the fuel is sufficiently consumed, and it is suppressed that the fuel is discharged out of the system without being reacted.

  As described above, in this embodiment, the groove 22 is provided on the surface of the anode side plate-shaped member 20 facing the anode electrode 12, and the groove 22 is formed from the region corresponding to the anode electrode 12 to the outlet 22 A on the side surface. As a result, it is possible to remove carbon dioxide via the groove 22 and to prevent the fuel F from being discharged out of the system without being reacted.

  In the above embodiment, the anode side plate-like member 20 has been described as having the auxiliary grooves 23 that allow the through holes 21 to communicate with each other on the surface facing the anode electrode 12. As described above, without providing the auxiliary groove 23, only the through hole 21 and the groove 22 may be provided.

  Moreover, the through-hole 21 may be formed in the diagonal direction, as shown in FIG. In the case of FIG. 8, the auxiliary groove 23 is formed in an oblique direction orthogonal to the through hole 21, and the groove 22 is formed so as to surround a quadrilateral region corresponding to the anode electrode 12. Although FIG. 8 shows the case where the groove 22 communicates with the through hole 21 and the auxiliary groove 23, it does not necessarily have to communicate with each other.

  Further, the through holes 21 and the auxiliary grooves 23 do not have to be formed in the same direction in the quadrilateral region corresponding to the anode electrode 12, and as shown in FIG. 9 or FIG. The center of the corresponding quadrilateral region 22C may be surrounded and arranged radially. In this case, it is desirable that the portion where the through hole 21 and the auxiliary groove 23 communicate with each other intersect or are orthogonal to each other. Therefore, the auxiliary groove 23 may be partially curved or bent. In the case of such a radial arrangement, the groove 22 is preferably formed so as to communicate the center 22C of the quadrangular region corresponding to the anode electrode 12 and the outlet 22A on the side surface. Further, the auxiliary groove 23 may communicate with the groove 22.

  In addition, the groove 22 is not necessarily provided only on one side of the quadrangular region corresponding to the anode electrode 12. For example, as shown in FIG. 11, it may be provided so as to surround the plurality of through holes 21, or as shown in FIG. 12, it may be provided around and between the through holes 21.

(Application example)
FIG. 13 illustrates an appearance of an electronic device including the fuel cell described in the above embodiment. The electronic device 100 is a portable electronic device that includes, for example, a device main body 110 that is a notebook personal computer and a fuel cell 120, so that the device main body 110 is driven by electric energy generated by the fuel cell 120. It has become.

  The device main body 110 includes, for example, an input unit 111 including a keyboard for inputting characters and the like, and a display unit 112 that can open and close to display an image. In FIG. 11, the display unit 112 is opened. The fuel cell 120 is attached to the rear surface of the device main body 110.

  Furthermore, specific examples of the present invention will be described.

(Examples 1 and 2)
The fuel cell 1 shown in FIG. 1 was produced. At that time, the through-hole 21, the groove 22, and the auxiliary groove 23 were formed in the anode side plate-like member 20 in the shape shown in FIG. 4 in Example 1 and in the shape shown in FIG. 5 in Example 2, respectively.

(Comparative Example 1)
As Comparative Example 1, as shown in FIG. 14, except that an anode side plate-like member 220 having no through holes 221 and having only through holes 221 made up of a number of parallel long holes was used. Fuel cells were produced in the same manner as in Examples 1 and 2. That is, Comparative Example 1 uses the same anode side plate member as the cathode side plate member.

  For the obtained fuel cells of Examples 1 and 2 and Comparative Example 1, the output was measured, and the output ratio when Comparative Example 1 was 100% was examined. The result is shown in FIG. As can be seen from FIG. 15, the outputs of Examples 1 and 2 were significantly improved as compared with Comparative Example 1. The reason is considered as follows. In the fuel cell of Comparative Example 1, since the anode side plate member 220 does not have a groove, the generated carbon dioxide has a gap between the seal material and the anode side plate member 220 or the anode side plate member 220 and the fuel supply unit. It is discharged from the clearance between For this reason, in Comparative Example 1, it is considered that carbon dioxide was not sufficiently discharged, and the output decreased due to an increase in carbon dioxide concentration around the anode electrode and an increase in internal pressure.

  That is, if the groove 22 is provided in the anode-side plate member 20, the generated carbon dioxide can be discharged to the atmosphere via the groove 22, and the increase in the carbon dioxide concentration and the increase in the internal pressure in the vicinity of the anode electrode 12 are suppressed. It was found that the output can be improved.

(Example 3)
Fuel cells were fabricated in the same manner as in Examples 1 and 2 above. At that time, as shown in FIG. 16, four rectangular through holes 21 were arranged over the entire quadrilateral region corresponding to the anode electrode 12. The dimension of the through hole 21 was about one half of the dimension of the anode electrode 12.

(Comparative Examples 3-1 and 3-2)
A fuel cell was fabricated in the same manner as in Examples 1 and 2 except that an anode side plate member having a through hole arranged only in a part of the region corresponding to the anode electrode was used. At that time, in Comparative Example 3-1, as shown in FIG. 17, the through hole 221 is arranged on one side of the quadrangular region corresponding to the anode electrode, and the groove 222 is arranged on the opposite side thereof. The two parallel grooves 222 communicated with each other. In Comparative Example 3-2, as illustrated in FIG. 18, the through-holes 221 are arranged in about half of the quadrangular region corresponding to the anode electrode.

  For the obtained fuel cells of Example 3 and Comparative Examples 3-1 and 3-2, the output was measured, and the output ratio when Comparative Example 1 was 100% was examined. The result is shown in FIG. As can be seen from FIG. 19, in Comparative Examples 3-1 and 3-2, an output equivalent to that in Comparative Example 1 was not obtained. This is because in Comparative Examples 3-1 and 3-2, the through-hole 221 is provided only at the end of the quadrangular region corresponding to the anode electrode or only about half, so that the fuel was not supplied uniformly. It is believed that there is.

  That is, it has been found that if the through holes 21 are arranged over the entire quadrilateral region corresponding to the anode electrode 12, the fuel F can be supplied uniformly and the output can be improved.

  Further, as can be seen from FIG. 19, in Example 3, an output almost equal to that in Comparative Example 1 was obtained, but in Examples 1 and 2, the result was better than that in Example 3. The reason is considered as follows. In Example 3, the dimension of the through hole 21 is about one half of the dimension of the anode electrode 12, and the through hole 21 is provided in most of the quadrangular region corresponding to the anode electrode 12. The contact area between 12 and the anode side plate member 20 is reduced. Therefore, the compressive force to the power generation unit 10 cannot be secured, and the interface resistance between the cathode electrode 11 or the anode electrode 12 and the electrolyte membrane 13 or the gas diffusion layer (GDL) in the cathode electrode 11 or the anode electrode 12 and the microporous material. It is considered that the interface resistance between the layer (MPL) and the interface resistance between the microporous layer (MPL) and the catalyst layer increased.

  That is, the contact area between the anode-side plate-like member 20 and the anode electrode 12 can be obtained by leaving a portion of the anode-side plate-like member 20 where none of the through-holes 21, the grooves 22, and the auxiliary grooves 23 are formed at a certain ratio or more. It was found that the output force can be increased by ensuring a uniform compressive force to the power generation unit 10 by the anode side plate-shaped member 20 and suppressing an increase in interface resistance in the power generation unit 10.

  The present invention has been described with reference to the embodiments and examples. However, the present invention is not limited to the above embodiments and examples, and various modifications can be made. For example, in the above-described embodiment, the configurations of the power generation unit 10, the anode side plate member 20, the cathode side plate member 30, and the fuel supply unit 40 have been specifically described, but may be configured by other structures or other materials. May be.

  For example, in the said embodiment and Example, although the electric power generation part 10 demonstrated the case where it was a flat plate electric power generation body which laminated | stacked several unit cell 10A-10F in the horizontal direction (lamination surface direction), this invention Can also be applied when the power generation unit has one unit cell, or when a fuel cell stack is configured by stacking a plurality of unit cells in the vertical direction (stacking direction).

  Further, for example, the material and thickness of each component described in the above embodiment or the manufacturing method of the fuel cell are not limited, and may be other materials and thicknesses, or may be other manufacturing methods. Good. For example, the present invention can be applied to a case where a liquid electrolyte (electrolytic solution) is used instead of the solid electrolyte membrane 13.

  In addition, for example, the liquid fuel may be other liquid fuel such as ethanol or dimethyl ether in addition to methanol.

  Furthermore, the present invention can be applied not only to the vaporization type but also to the case of supplying liquid fuel.

It is sectional drawing showing the structure of the fuel cell which concerns on one embodiment of this invention. FIG. 2 is an exploded perspective view showing the configuration of the fuel cell shown in FIG. 1. It is a top view showing the structure of the anode side plate-shaped member shown in FIG. FIG. 4 is an enlarged plan view showing a part of an anode side plate member shown in FIG. 3. It is a top view showing the modification of FIG. It is a top view showing the structure of the cathode side plate-shaped member shown in FIG. It is a top view showing the other modification of FIG. FIG. 10 is a plan view illustrating still another modification example of FIG. 5. FIG. 10 is a plan view illustrating still another modification example of FIG. 5. FIG. 10 is a plan view illustrating still another modification example of FIG. 5. FIG. 10 is a plan view illustrating still another modification example of FIG. 5. FIG. 10 is a plan view illustrating still another modification example of FIG. 5. It is a perspective view showing the example of application of this invention. 5 is an enlarged plan view showing a part of an anode side plate member according to Comparative Example 1. FIG. It is a figure showing the result of an Example. 6 is a plan view of an anode side plate member according to Embodiment 3. FIG. It is a top view of the anode side plate-shaped member which concerns on Comparative Example 3-1. It is a top view of the anode side plate-shaped member which concerns on Comparative Example 3-2. It is a figure showing the result of an Example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Fuel cell, 10 ... Power generation part, 10A-10F ... Unit cell, 11 ... Cathode electrode, 12 ... Anode electrode, 13 ... Electrolyte membrane, 20 ... Anode side plate-shaped member, 21, 31 ... Through-hole, 22 ... Groove, DESCRIPTION OF SYMBOLS 23 ... Auxiliary groove, 30 ... Cathode side plate-shaped member, 40 ... Fuel supply part, 41 ... Fuel supply hole, 42 ... Fuel vaporization chamber

Claims (9)

A power generation unit having an electrolyte between the cathode electrode and the anode electrode;
An anode side plate-like member provided on the anode electrode side of the power generation unit,
The anode side plate member is:
A through-hole disposed over the entire area corresponding to the anode electrode and reaching the opposite surface from the surface facing the anode electrode;
A fuel cell having a groove formed on a surface facing the anode electrode from a region corresponding to the anode electrode to an outlet on a side surface. The fuel cell according to claim 1, wherein the groove communicates with the through hole. The fuel cell according to claim 1, wherein the groove is provided in a direction intersecting the through hole. The groove is provided along a side of a region corresponding to the anode electrode,
The fuel cell according to claim 3, wherein the through hole is provided in a direction orthogonal to the groove. The fuel cell according to claim 1, wherein the groove has a throttle having a smaller cross-sectional area than other portions in the vicinity of the outlet. 2. The fuel cell according to claim 1, wherein the anode-side plate-like member has an auxiliary groove that communicates the through holes with each other on a surface facing the anode electrode. The fuel cell according to claim 6, wherein the auxiliary groove communicates with the groove. 2. The fuel cell according to claim 1, further comprising: a fuel supply unit to which liquid fuel is supplied; and a fuel vaporization chamber formed between the fuel supply unit and the anode side plate member outside the anode side plate member. . A fuel cell, the fuel cell comprising:
A power generation unit having an electrolyte between the cathode electrode and the anode electrode;
An anode side plate-like member provided on the anode electrode side of the power generation unit,
The anode side plate member is:
A through-hole disposed over the entire area corresponding to the anode electrode and reaching the opposite surface from the surface facing the anode electrode;
An electronic device comprising: a groove formed on a surface facing the anode electrode from a region corresponding to the anode electrode to an outlet on a side surface.

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