JP2010140668A - Evaluation test device for cell for fuel battery, and evaluation test cell used in same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an evaluation test device capable of carrying out an evaluation test of a fuel battery efficiently and accurately, and to provide an evaluation test cell of the same. <P>SOLUTION: The evaluation test device evaluates a cell for a fuel battery by holding an evaluation test cell (10) between two gas supply pipes (60 and 61) mutually abutted at the pipe openings. The evaluation test cell (10) includes a single electrolyte (12) arranged so as to separate each inner space of gas supply pipes (60 and 61), and a pair of electrodes (18 and 19) oppositely arranged on the electrolyte (12) while holding the electrode. Two or more pairs of electrodes (18 and 19) are provided on the electrolyte (12) and adjacent electrodes are arranged separately with a distance larger than at least a thickness of the electrolyte (12). Further, the evaluation test cell (10) may be provided only including the single electrolyte (12) and two or more pairs of electrodes (18 and 19) on one side of the electrolyte (12). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an evaluation test device for a fuel cell and an evaluation test cell used therefor, and in particular, an evaluation test cell is sandwiched between two gas supply pipes which are in contact with each other and the fuel cell cell. The present invention relates to an evaluation test apparatus and an evaluation test cell for performing the evaluation.

  A fuel cell is a type in which an air electrode and a fuel electrode are separated from each other by an electrolyte that conducts ions, electrodes are provided on the surface of the electrolyte exposed to each electrode, and electrons are emitted and transferred at the electrodes by connecting to an external circuit to extract charges. It is a generator. Here, since the characteristics of the fuel cell largely depend on the material and structure of the electrode, many evaluation tests have been conducted on the electrode.

  For example, Patent Document 1 discloses a test apparatus that evaluates a cell for a fuel cell including an electrode. In the test apparatus, the gas supply pipe is composed of a set of an alumina inner pipe as an air supply path and an alumina outer pipe as an exhaust path arranged coaxially so as to surround the inner pipe. An evaluation test cell is sandwiched between the gas supply pipes that face each other and the fuel gas and the oxidizing gas are supplied to each surface of the evaluation test cell via the alumina inner pipe, and the evaluation test on the electrode is performed. Is done. In this evaluation test apparatus, a glass seal made of melted glass for preventing gas leakage is interposed between the evaluation test cell and the alumina outer tube, that is, at two places above and below the evaluation test cell.

  At the time of setting the evaluation test cell, glass powder or an annular glass body is disposed between the evaluation test cell and the alumina outer tube. When this evaluation test cell is externally heated, the glass body starts to melt at a predetermined temperature and a glass seal is formed. That is, at the time of setting the evaluation test cell, the glass seal is not yet formed, and it is impossible to judge whether the glass seal has good gas sealing performance at the time of the heating test. If this glass seal was incomplete, the evaluation test could not be performed, and it was necessary to stop heating, lower the temperature of the evaluation test cell, and reset the evaluation test apparatus. In addition, for an accurate evaluation test, it has been necessary to replace the evaluation test cell once heated with a new one. Therefore, the problem occurrence rate of the setting of the apparatus has been a big problem in conducting the evaluation test.

On the other hand, for example, Patent Document 2 discloses a one-side tube type fuel cell evaluation test apparatus that can reduce the occurrence rate of apparatus setting defects by reducing the number of glass seals to only one place. An evaluation test can be performed simply by placing the fuel cell on the lower support member with the seal portion interposed therebetween.
JP 2007-28785A JP 2008-59833 A

  As described in Patent Document 2, in the one-side tube type fuel cell evaluation test apparatus, the number of glass seal portions can be reduced to reduce the incidence of apparatus setting failure. Diffusion is insufficient and stable and accurate evaluation tests have not been performed.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an evaluation test apparatus that can efficiently and accurately perform an evaluation test of a fuel cell, and an evaluation test cell thereof.

  An evaluation test apparatus according to the present invention is an evaluation test apparatus for evaluating a fuel cell by sandwiching an evaluation test cell between two gas supply pipes each having a pipe opening butted against each other. The cell includes a single electrolyte provided to isolate the internal space of each of the gas supply pipes, and a pair of electrodes provided on the electrolyte so as to face each other, the pair of the electrodes being A plurality of two or more electrodes are provided on the electrolyte, and the adjacent electrodes are separated from each other by a distance greater than at least the thickness of the electrolyte.

  According to this invention, since the evaluation test can be performed by the number of the pair of electrodes provided on the electrolyte only by setting the device once, the evaluation test can be performed efficiently. In addition, since each evaluation test is performed on the same electrolyte, the state of the electrolyte, in particular, the electrolyte obtained by firing, for example, is not affected by its properties, and the evaluation test is accurately performed for electrode evaluation. Can be done. Further, since the electrodes adjacent to each other on one surface of the electrolyte are arranged at a distance larger than at least the thickness of the electrolyte, the evaluation test can be performed accurately without being affected by the adjacent electrodes. .

  In the above-described evaluation test apparatus according to the present invention, the electrodes provided on one surface of the electrolyte may be the same. According to this invention, the comparison between the electrodes provided on the other surface of the electrolyte can be efficiently and accurately evaluated.

  In the evaluation test apparatus according to the present invention described above, the electrode may include a conductive plate having a large number of communication holes and a metal wire electrically connected to the conductive plate. According to this invention, the contact resistance between the metal wire and the electrode can be reduced, and the evaluation test can be accurately performed. Furthermore, when a metal having excellent high-temperature oxidation resistance, such as platinum mesh, is used for the conductive plate, the metal is expensive, so a metal made of the same metal between the evaluation test cell and the external measuring instrument. Wire can be used to reduce the amount of expensive metal used. That is, the evaluation test can be performed efficiently at low cost.

  In the above-described evaluation test apparatus according to the present invention, the electrodes may be substantially rectangular and provided side by side on the electrolyte. According to this invention, it is easy to connect each electrode and the evaluation test cell, and the evaluation test can be performed efficiently.

  In the above-described evaluation test apparatus according to the present invention, the supply amount of the gas body is not less than a predetermined amount so that the electromotive forces of the pair of electrodes having the same configuration with different arrangement positions on the electrolyte are the same. It may be characterized by including a flow adjusting device that adjusts to the above. According to this invention, the flow adjustment device can reduce the utilization (reaction) rate of the gas body in the evaluation test cell and reduce the influence of the air flow of the gas body, so that the evaluation test can be accurately performed.

  Furthermore, an evaluation test cell according to the present invention is an evaluation test cell for evaluating a fuel cell by being sandwiched between two gas supply pipes whose pipe ports are in contact with each other. And two or more electrodes provided on one surface of the electrolyte, and the adjacent electrodes are arranged apart from each other by at least a distance larger than the thickness of the electrolyte. According to this invention, by providing a desired electrode on the opposite side of the electrode across the single electrolyte of the evaluation test cell, the number of the pair of electrodes provided on the electrolyte can be evaluated only by setting the device once. Since the test can be performed, the evaluation test can be performed efficiently. In addition, since each evaluation test is performed on the same electrolyte, the state of the electrolyte, in particular, the electrolyte obtained by firing, for example, is not affected by its properties, and the evaluation test is accurately performed for electrode evaluation. Can be done. Further, since the electrodes adjacent to each other on one surface of the electrolyte are arranged at a distance larger than at least the thickness of the electrolyte, the evaluation test can be performed accurately without being affected by the adjacent electrodes. .

  In the evaluation test cell according to the present invention described above, the electrodes may be the same. According to this invention, a desired electrode can be provided on the other surface of the electrolyte, and comparison between these electrodes can be efficiently and accurately evaluated.

  In the above-described evaluation test cell according to the present invention, the electrolyte may be supported on the electrode. The electrode may include a metal wire electrically connected thereto, and the metal wire may be fixed in the vicinity of a peripheral edge portion of the electrolyte. According to this invention, when a desired electrode is provided on one surface of the electrolyte, damage to the electrolyte can be prevented and handling can be facilitated, so that an evaluation test can be performed efficiently. In addition, the electrolyte can be formed thin, and variations in the selection of the electrolyte can be expanded.

  In the evaluation test cell according to the present invention described above, the electrode may include a conductive plate having a large number of communication holes. According to this invention, the contact resistance between the metal wire and the electrode can be reduced, and the evaluation test can be accurately performed.

  In the evaluation test cell according to the present invention described above, the electrode may be substantially rectangular and provided in parallel on the electrolyte. According to this invention, it is easy to connect each electrode and the evaluation test cell, and the evaluation test can be performed efficiently.

  The details of an evaluation test apparatus and an evaluation test cell according to one embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the evaluation test apparatus 1 is installed inside an external heating furnace 40 such as a Kanthal-type split vertical tubular furnace and externally heats the evaluation test cell 10 to a predetermined temperature of 1000 ° C. or higher. Is possible. The external heating furnace 40 is controlled by receiving a signal from a sensor unit that measures the temperature of the evaluation test cell 10 (not shown).

  An upper ceramic outer tube 60 and a lower ceramic outer tube 61 having the same inner diameter and outer diameter are arranged vertically with their tube ports (open ends) in between, and between them, An evaluation test cell 10 is arranged. At the time of setting the evaluation test cell 10 in the evaluation test apparatus 1, the glass body 58 is disposed between the evaluation test cell 10 along each of the upper ceramic outer tube 60 and the lower ceramic outer tube 61. . The glass body 58 is an annular glass body or a glass powder hardened with a binder such as a resin that volatilizes at a high temperature. The glass body 58 melts when the evaluation test cell 10 is heated, and the upper ceramic outer tube 60 and the lower ceramic outer tube are melted. A gas seal is formed with the evaluation test cell 10 by flowing along the 61 pipe opening. The glass body is glass that melts (softens) at least at a temperature lower than the temperature at which the evaluation test is performed. In a solid oxide fuel cell, which will be described later, since an evaluation test is usually performed at a temperature close to 1000 ° C., Pyrex (registered trademark) glass that softens at about 800 ° C. is preferable.

  Inside the upper ceramic outer tube 60 and the lower ceramic outer tube 61, a cylindrical (or rectangular tube) upper ceramic inner tube 62 and a lower ceramic inner tube 63 are vertically arranged substantially coaxially. That is, the outer diameters of the upper ceramic inner tube 62 and the lower ceramic inner tube 63 are smaller than the inner diameters of the upper ceramic outer tube 60 and the lower ceramic outer tube 61. The upper ceramic inner tube 62 and the lower ceramic inner tube 63 have their mouths (open ends) positioned on the inner side in the vertical direction from the upper ceramic outer tube 60 and the lower ceramic outer tube 61 (open ends), which will be described later. It is located away from the electrolyte substrate 12 in the vertical direction.

  Here, the material of the upper ceramic outer tube 60, the lower ceramic outer tube 61, the upper ceramic inner tube 62, and the lower ceramic inner tube 63 is alumina. Other stable ceramics such as mullite and zirconia can be used.

  As described above, the gas body is supplied to the upper surface of the electrolyte substrate 12 of the evaluation test cell 10 through the upper ceramic inner tube 62 (F1), and a part reacts on the electrolyte substrate 12 to form another gas body, These gas bodies are mixed, passed between the upper ceramic outer tube 60 and the upper ceramic inner tube 62 (F2), and discharged to the outside of the evaluation test apparatus 1. Similarly, a gas body is supplied to the lower surface of the electrolyte substrate 12 of the evaluation test cell 10 through the lower ceramic inner tube 63 (F3), and a part reacts on the electrolyte substrate 12 to form another gas body, These gas bodies are mixed, passed between the lower ceramic outer tube 61 and the lower ceramic inner tube 63 (F4), and discharged to the outside of the evaluation test apparatus 1. Similar to the upper ceramic outer tube 60, the lower ceramic outer tube 61, the upper ceramic inner tube 62, and the lower ceramic inner tube 63, a combination of multiple tubes for supplying gas bodies to the upper and lower surfaces of the electrolyte substrate 12 is adopted. However, since it is known, it will not be described in detail.

  2 to 4, the electrolyte substrate 12 of the evaluation test cell 10 is made of an oxygen ion conductive oxide, and is at least larger than the inner diameters of the upper ceramic outer tube 60 and the lower ceramic outer tube 61, It is a disk (or rectangular plate) having a size of the outer diameter. The electrolyte substrate 12 is made of yttria-stabilized zirconia or scandia-stabilized zirconia, but may be made of ceria-based oxide, a composite material of stabilized zirconia and ceria-based oxide, or a known fuel cell electrolyte. Good.

  A plurality of anode-side electrodes 18 that are cermet electrodes made of a known material such as metal-zirconia ceramics such as Ni—YSZ and Ni—ScSZ are provided on the surface of the electrolyte substrate 12 exposed to the fuel electrode. The anode side electrode 18 is substantially rectangular and is provided side by side on the electrolyte substrate 12, and at least the distance between the adjacent anode side electrodes 18 is separated from the thickness of the electrolyte substrate 12. Details of the distance between the electrodes will be described later.

  Further, the anode side electrode 18 is made of a metal excellent in oxidation resistance at a high temperature, for example, a pure metal or an alloy such as platinum or nickel, and has a large number of communication holes and is a conductive material that can pass through the gas body. A strip-like electrode plate 20 made of a plate such as a mesh plate or a porous plate is provided. The strip electrode plate 20 has a substantially rectangular strip shape having the same width as the anode side electrode 18, but has a longer length. As will be described later, at least one end of the strip-shaped electrode plate 20 protrudes outside the electrolyte substrate 12 beyond the end in the longitudinal direction of the anode side electrode 18. A conductive wire (not shown) is connected to the protruding end portion of the strip electrode plate 20 and is electrically connected to a measuring device (not shown) outside the evaluation test cell 10.

  Various electrodes to be evaluated in the evaluation test are provided on the surface of the electrolyte substrate 12 exposed to the air electrode. The cathode side electrode 19 has the same substantially rectangular shape as the anode side electrode 18 and is provided at a position facing the anode side electrode 18 (in FIG. 3, the position of the anode side electrode 18 is shifted for the purpose of illustration). ) The cathode side electrode 19 is, for example, an evaluation test such as platinum alone, or lanthanum strontium manganite (LSM), lanthanum strontium cobaltite (LSC), samarium strontium cobaltite (SSC) alone, or a cermet combining metal-ceramics. Made of symmetrical material. On the cathode side electrode 19, a strip electrode plate 21 similar to the strip electrode plate 20 is attached along the central axis of the substantially rectangular cathode side electrode 21.

  Here, as shown in FIG. 4, the thickness X1 of the electrolyte substrate 12, that is, the distance X1 between the opposing electrodes D1-D2 (a pair of opposing anode-side electrode 18 and cathode-side electrode 19) is greater than that of the electrolyte substrate 12. If the distance X2 between the adjacent electrodes D1-D3 (anode-side electrodes 18) on one side is larger, a circuit is configured at least between the electrodes having a short distance. In addition, since the relative dielectric constant of the electrolyte substrate 12 is at least greater than 1, if the distance X2 between the adjacent electrodes is at least greater than the thickness X1 of the electrolyte substrate 12, a circuit is configured via the gas body. Never happen. Therefore, the distance between the anode-side electrodes 18 or the cathode-side electrodes 19 is separated from at least the thickness of the electrolyte substrate 12, so that a desired pair of opposing anode-side electrodes 18 and cathode-side electrodes 19 in the evaluation test are obtained. Can form a circuit.

  Referring to FIG. 2 again, both ends of the strip electrode plates 20 and 21 protrude beyond the electrolyte substrate 12 to at least one side and to both sides when performing an evaluation test by the four-point measurement method. A paste-like ceramic bond 16 is built up on the peripheral edge of the electrolyte substrate 12, and band electrode plates 20 and 21 are bundled and embedded. Since the electrolyte substrate 12 is supported on the strip electrode plates 20 and 21 bundled by the ceramic bond 16, even if there is an inadvertent load on the electrolyte substrate 12, the damage can be prevented.

  Details of an evaluation test cell according to another embodiment of the present invention will be described with reference to FIGS.

  As described above, a plurality of substantially rectangular anode-side electrodes 18 are arranged in parallel on the surface of the electrolyte substrate 12 exposed to the fuel electrode, and at least the distance between the adjacent electrodes is determined by the thickness of the electrolyte substrate 12. Are also separated. On the anode side electrode 18, a metal wire 20 a made of a metal excellent in oxidation resistance at a high temperature, for example, a pure metal or an alloy such as platinum or nickel, is attached along the central axis of the substantially rectangular anode side electrode 18. ing. As will be described later, a conductive plate such as a metal mesh having a large number of communication holes and capable of transmitting a gas body may be interposed between the metal wire 20a and the anode side electrode 18. The metal wire 20a is electrically connected to a measuring device (not shown) outside the evaluation test cell 10 directly or connected to a conductive wire (not shown).

  Furthermore, the surface exposed to the air electrode of the electrolyte substrate 12 is provided with various electrodes to be evaluated in the evaluation test. The cathode side electrode 19 has the same substantially rectangular shape as the anode side electrode 18 and is provided at a position facing the anode side electrode 18. The cathode-side electrode 19 includes an electrode 19a attached to the electrolyte substrate 12 and a strip electrode plate 19b of substantially the same size attached thereon. The strip electrode plate 19b is made of a metal excellent in oxidation resistance at a high temperature, for example, a pure metal or an alloy such as platinum or nickel, a metal mesh having a large number of communication holes, and a porous body that is permeable to gas. Become. The cathode side electrode 19 further includes a metal wire 21a made of a metal that is also excellent in oxidation resistance at a high temperature, and is electrically connected to the strip electrode plate 19b. Since the strip electrode plate 19b can reduce the contact resistance between the metal wire 21a and the electrode 19a, an evaluation test can be accurately performed. Furthermore, since the size of the strip electrode plate 19b can be reduced, the amount of expensive platinum used can be reduced.

  As described above, both ends of the metal wires 20a and 21a protrude beyond the electrolyte substrate 12 to at least one side, and to both sides when performing an evaluation test by the four-point measurement method. A paste-like ceramic bond 16 is built up at the peripheral edge of the electrolyte substrate 12, and the metal wires 20a and 21a are bundled and embedded. Since the electrolyte substrate 12 is supported by the metal wires 20a and 21a, the anode side electrode 18 and the cathode side electrode 19 bundled by the ceramic bond 16, even if there is an inadvertent load on the electrolyte substrate 12, The damage can be prevented. The ceramic bond 16 may be provided along the entire peripheral edge of the electrolyte substrate 12 to protect the end of the electrolyte substrate 12.

  Others are the same as described above and will not be described in detail.

  Next, the details of the assembly process and operation of the above-described evaluation test apparatus 1 and evaluation test cell 10 will be described with reference to the drawings.

  First, the evaluation test cell 10 is assembled.

  Referring to FIG. 9, a round plate made of scandia-stabilized zirconia (ScSZ) having an outer diameter of 20 mm and a thickness of 300 μm was used for the electrolyte substrate 12. Ni—ScSZ was used for all anode-side electrodes 18 provided on the lower surface of the electrolyte substrate 12. The anode-side electrodes 18 were 8 mm × 2 mm, substantially rectangular strips, and three of them were juxtaposed on one surface of the electrolyte substrate 12 with an interval of 1.5 mm. Furthermore, a metal wire 20a made of platinum was disposed on the anode side electrode 18 along the longitudinal center line. The metal wire 20a was fixed to the periphery of the electrolyte substrate 12 with a ceramic bond 16 to produce a cell assembly 10a. The cell assembly 10a can be used for an evaluation test by installing the cathode side electrode 19 on the electrolyte substrate 12 at a later date if necessary.

  Again referring to FIGS. 6 to 8, three types of Pt / LSM / LSM-ScSZ, Pt / LSM, and Pt were selected for the cathode side electrode 19, respectively. Here, Pt is a strip electrode plate 19b, which is a platinum mesh. The cathode side electrode 19 is also a substantially rectangular strip having a size of 8 mm × 2 mm, and three are arranged side by side so as to face the anode side electrode 18 with the electrolyte substrate 12 interposed therebetween. A metal wire 21 a was disposed on the strip-shaped electrode plate 19 b of the cathode side electrode 19, and was fixed to the periphery of the electrolyte substrate 12 with a ceramic bond 16.

  With reference to FIGS. 1 and 9, the evaluation test cell 10 obtained as described above is composed of an upper ceramic outer tube 60 and a lower ceramic outer tube 61 having an outer diameter of 20 mm with a glass body 58 interposed therebetween. It is sandwiched between the mouths. In this state, when the external heating furnace 40 is operated and the evaluation test cell 10 is heated to a predetermined temperature, the glass body 58 is eventually melted to form a gas seal. In order to protect the electrolyte substrate 12, the anode side electrode 18, the cathode side electrode 19, etc., heating may be performed while flowing an inert gas such as argon through the lower ceramic inner tube 63 and the upper ceramic inner tube 62. Good.

  Subsequently, an electrode evaluation test is performed.

  Referring to FIG. 1, a predetermined gas body, for example, methane or a known fuel cell fuel gas is guided to the lower surface of the electrolyte substrate 12 provided with the anode electrode 18 through the lower ceramic inner tube 63 ( F3). On the other hand, a predetermined gas body, for example, a known fuel cell oxidant gas such as oxygen or air is guided to the surface of the electrolyte substrate 12 provided with the cathode-side electrode 19 through the upper ceramic inner tube 62 ( F1).

  By the way, when a set of a pair of anode side electrode 18 and cathode side electrode 19 having the same configuration is provided at different positions on the electrolyte substrate 12, the fuel gas (F3) is set so that the electromotive forces in these sets are the same. ) And the supply amount of the oxidizing gas (F1) are preferably adjusted. That is, the supply amount of these gas bodies is increased to at least a predetermined amount or more by a flow adjusting device (not shown) provided upstream of the lower ceramic inner tube 63 and the upper ceramic inner tube 62. The amount of use (reaction) of the gas body at the anode side electrode 18 and the cathode side electrode 19 with respect to the supply amount of the gas body to the evaluation test cell 10 is set to a reaction rate-controlled state, and on the electrode against the air flow formed by the gas body The effect of the reaction can be reduced.

  As described above, a pair of the anode-side electrode 18 and the cathode-side electrode facing each other with the electrolyte substrate 12 interposed therebetween while supplying the gas body supply amount obtained in advance to the evaluation test cell 10 by a flow adjusting device (not shown). An evaluation test will be conducted on 19. As the evaluation test method, the two-terminal method is simple, but a four-terminal method capable of canceling the wiring resistance may be used. Since these are almost the same as the conventional evaluation methods, they will not be described in detail.

  In the above evaluation test, the pair of the anode-side electrode 18 and the cathode-side electrode 19 facing each other with the electrolyte substrate 12 interposed therebetween is at least separated from the thickness of the electrolyte substrate 12 and does not interfere with each other. An evaluation test can be performed at a time, and the evaluation test can be performed more efficiently.

  According to the present embodiment, the evaluation test can be performed by the number of sets of the pair of the anode-side electrode 18 and the cathode-side electrode 19 facing each other with the electrolyte substrate 12 interposed therebetween by setting the evaluation test apparatus 1 once. Therefore, the evaluation test can be performed efficiently without requiring resetting of the apparatus.

  Moreover, since each evaluation test is performed on the same electrolyte substrate 12, even if it is an electrolyte of the same composition, it is not influenced by properties, such as an individual difference, and can evaluate various electrodes correctly. In addition, since the pair of electrodes described above is disposed apart from each other by at least a distance larger than the thickness of the electrolyte substrate 12, the evaluation test can be performed accurately without being affected by the pair of adjacent electrodes. . Further, since the electrode area can be reduced, even when an expensive platinum mesh 19a is used, the amount used can be reduced, and an evaluation test can be efficiently conducted at low cost.

  As another example of the electrode shape, as shown in FIG. 11, the pair of the anode-side electrode 18 and the cathode-side electrode 19 facing each other with the electrolyte substrate 12 interposed therebetween is a flow (not shown) as described above. Regardless of the position on the electrolyte substrate 12, the adjustment device can provide the same evaluation test conditions, so that the evaluation test can be accurately performed. Therefore, the position of the electrode set on the electrolyte substrate 12 can be freely changed. For example, it can be arranged at equal intervals around the center of the electrolyte substrate 12 and the periphery thereof so that at least the distance between the electrodes is larger than the thickness of the electrolyte substrate 12 (see FIG. 11A). The shapes of the anode side electrode 18 and the cathode side electrode 19 do not have to be substantially rectangular, and may be, for example, a disk shape (see FIG. 11B).

  Up to this point, the representative embodiments according to the present invention and the modifications based thereon have been described. However, the present invention is not necessarily limited thereto, and can be appropriately changed by those skilled in the art. For example, although the solid oxide fuel cell has been described in the embodiments of the present invention, other electrolyte fuel cells may be used. That is, those skilled in the art will be able to find various alternative embodiments and modifications without departing from the scope of the appended claims.

It is sectional drawing of the evaluation test apparatus by this invention. It is a top view of the evaluation test cell by this invention. It is sectional drawing in the AA of FIG. It is sectional drawing of the principal part of the evaluation test cell by this invention. It is sectional drawing which shows the principal part of the evaluation test apparatus by this invention. It is sectional drawing of the evaluation test cell by this invention. It is sectional drawing in the AA of FIG. It is sectional drawing of the evaluation test cell by this invention. It is sectional drawing in the (a) top view and (b) AA line of the evaluation test cell by this invention. It is sectional drawing which shows the principal part of the evaluation test apparatus by this invention. It is a top view of the evaluation test cell by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Evaluation test apparatus 10 Evaluation test cell 10a Cell assembly 12 Electrolyte substrate 16 Ceramic bond 18 Anode side electrode 19 Cathode side electrode 20a, 21a Metal wire 40 External heating furnace 58 Glass body 60 Upper ceramic outer tube 61 Lower ceramic outer tube 62 Upper ceramic Inner pipe 63 Lower ceramic inner pipe

Claims (11)

An evaluation test apparatus for evaluating a fuel cell by sandwiching an evaluation test cell between two gas supply pipes that face each other's pipe ports,
The evaluation test cell includes a single electrolyte provided by separating the internal spaces of the gas supply pipes, and a pair of electrodes provided on the electrolyte so as to face each other, and a pair of electrodes. The electrode is provided with a plurality of two or more on the electrolyte, and the adjacent electrodes are arranged apart from each other by at least a distance larger than the thickness of the electrolyte, and the fuel cell evaluation test apparatus.   2. The evaluation test apparatus according to claim 1, wherein all of the electrodes provided on one surface of the electrolyte are the same.   The evaluation test apparatus according to claim 1, wherein the electrode includes a conductive plate having a large number of communication holes and a metal wire electrically connected thereto.   The evaluation test apparatus according to claim 1, wherein the electrodes are substantially rectangular and are provided in parallel on the electrolyte.   Including a flow adjusting device that adjusts the supply amount of the gas body to a predetermined amount or more so that the electromotive forces of the pair of electrodes having the same configuration with different arrangement positions on the electrolyte are the same. The evaluation test apparatus according to claim 1. An evaluation test cell for evaluating a fuel cell by being sandwiched between two gas supply pipes that face each other's pipe ports,
A single electrolyte and two or more electrodes provided on one surface of the electrolyte are included, and the adjacent electrodes are disposed apart from each other by a distance greater than at least the thickness of the electrolyte. An evaluation test cell.   The evaluation test cell according to claim 6, wherein all of the electrodes are the same.   The evaluation test cell according to claim 6 or 7, wherein the electrolyte is supported on the electrode.   The evaluation test cell according to claim 8, wherein the electrode includes a metal wire electrically connected thereto, and the metal wire is fixed in the vicinity of a peripheral edge portion of the electrolyte.   The evaluation test cell according to claim 9, wherein the electrode includes a conductive plate having a plurality of communication holes. 11. The evaluation test cell according to claim 6, wherein the electrodes are substantially rectangular and are provided side by side on the electrolyte.