JPH0850914A - Cylindrical layer-built fuel cell - Google Patents
Cylindrical layer-built fuel cellInfo
- Publication number
- JPH0850914A JPH0850914A JP6206052A JP20605294A JPH0850914A JP H0850914 A JPH0850914 A JP H0850914A JP 6206052 A JP6206052 A JP 6206052A JP 20605294 A JP20605294 A JP 20605294A JP H0850914 A JPH0850914 A JP H0850914A
- Authority
- JP
- Japan
- Prior art keywords
- cell
- cylindrical
- fuel
- cells
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/08—Slag cements
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、固体電解質型燃料電
池で、円筒形の単セルを、同心状に複数重ねて配設した
円筒積層型燃料電池に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid oxide fuel cell, and a cylindrical laminated fuel cell in which a plurality of cylindrical single cells are concentrically stacked.
【０００２】[0002]
【従来の技術】固体電解質型燃料電池は、例えば、酸素
イオン透過性のあるイットリア安定化ジルコニア（ＹＳ
Ｚ）やカルシア安定化ジルコニア（ＣＳＺ）などの固体
電解質を挟んで、ペロブスカイト型ランタン系酸化物か
らなる空気電極とニッケルなどを主体とする燃料電極と
を設け、この各電極に臨ませて流される空気と燃料ガス
とを固体電解質を介して電気化学的に反応させることに
より起電力を得るものである。2. Description of the Related Art Solid oxide fuel cells are manufactured, for example, from yttria-stabilized zirconia (YS) having oxygen ion permeability.
Z) or calcia-stabilized zirconia (CSZ), sandwiching a solid electrolyte between them, an air electrode made of a perovskite-type lanthanum-based oxide and a fuel electrode mainly made of nickel are provided, and they are made to flow facing each of these electrodes. Electromotive force is obtained by electrochemically reacting air and fuel gas via a solid electrolyte.
【０００３】例えば図５は、従来の平板型燃料電池１を
示すもので、平板状の固体電解質２の一側面（図５にお
いて下面）に空気電極３を、他側面に燃料電極４をそれ
ぞれ形成した２枚の平板状単セル５，５を、両面にガス
流路となる溝を備えたガスセパレータ６を介して気密に
重ねるとともに、下側の平板状単セル５の下面と、上側
の平板状単セル５の上面とには、片面にガス流路となる
溝を備えたガスセパレータ７，７を、固体電解質２の表
面の電極３，４と気密に接するように配設して、各単セ
ル５の空気電極３に面したガスセパレータ６，７の溝は
空気が流通する酸化ガス流路８となり、また燃料電極４
に面したガスセパレータ６，７の溝は燃料ガスが流通す
る燃料ガス流路９となる。このように、ガスセパレータ
６，７によって空気電極３に接して流れる空気と、燃料
電極４に接して流れる燃料ガスとが、直接接触しないよ
うに分離されるとともに、前記単セル５の固体電解質２
を介して電気化学的に反応させることにより起電力を得
ている。そして、このように多数の平板状単セル５をガ
スセパレータ６を挟んで積層してモジュールを大型化す
ることによって、高電圧にして取り出すことができる。For example, FIG. 5 shows a conventional flat plate type fuel cell 1, in which an air electrode 3 is formed on one side surface (a lower surface in FIG. 5) of a plate-shaped solid electrolyte 2 and a fuel electrode 4 is formed on the other side surface thereof. The two flat plate-shaped single cells 5 and 5 are airtightly stacked via a gas separator 6 having grooves on both sides to serve as gas passages, and the lower surface of the flat plate-shaped single cell 5 on the lower side and the flat plate on the upper side. Gas separators 7, 7 each having a groove serving as a gas flow path on one surface are arranged on the upper surface of the unit cell 5 so as to be in airtight contact with the electrodes 3, 4 on the surface of the solid electrolyte 2. The grooves of the gas separators 6 and 7 facing the air electrode 3 of the unit cell 5 serve as an oxidizing gas flow passage 8 through which air flows, and the fuel electrode 4
Grooves of the gas separators 6 and 7 facing to each other serve as a fuel gas passage 9 through which the fuel gas flows. Thus, the gas separators 6 and 7 separate the air flowing in contact with the air electrode 3 and the fuel gas flowing in contact with the fuel electrode 4 so as not to come into direct contact with each other, and the solid electrolyte 2 of the single cell 5 is separated.
Electromotive force is obtained by electrochemically reacting via. Then, by stacking a large number of flat plate-shaped single cells 5 with the gas separator 6 interposed therebetween to increase the size of the module, a high voltage can be taken out.
【０００４】また図６は、複数の円筒型単セル１５を直
・並列に接続してモジュール化した従来の円筒型燃料電
池１０を示すもので、円筒型単セル１５は、多孔質の支
持管１１の外周に、空気電極１２と固体電解質１３と燃
料電極１４とが内側から外側へ順に重ねて形成されてお
り、そのうちの固体電解質１３と燃料電極１４の一部を
削除して空気電極１２の上に、耐熱性に優れたニッケル
等の金属からなるインターコネクタ１６が形成されてい
る。そして、各円筒型単セル１５は、母線１７，１７間
に、熱膨張による寸法変化を吸収可能に導通するニッケ
ルフェルト１８を介して直列に接続されるとともに、隣
接する円筒型単セル１５，１５の外側の燃料電極１４，
１４の相互間をニッケルフェルト１８によって導通して
並列にも接続されており、円筒型単セル１５の中空部に
空気を流通させるとともに、各単セル１５の燃料電極１
４が形成された外周部に燃料ガスを流通させ、固体電解
質１３を介して電気化学的に反応させることにより起電
力を得ている。FIG. 6 shows a conventional cylindrical fuel cell 10 in which a plurality of cylindrical single cells 15 are connected in series and in parallel to form a module. The cylindrical single cells 15 are porous support tubes. An air electrode 12, a solid electrolyte 13, and a fuel electrode 14 are formed on the outer periphery of the layer 11 in this order from the inner side to the outer side. Of these, a part of the solid electrolyte 13 and the fuel electrode 14 is removed to remove the air electrode 12 from the air electrode 12. An interconnector 16 made of a metal such as nickel having excellent heat resistance is formed thereon. The cylindrical unit cells 15 are connected in series between the bus bars 17 and 17 via the nickel felt 18 that conducts so as to absorb the dimensional change due to thermal expansion, and the adjacent cylindrical unit cells 15 and 15 are connected to each other. Outer fuel electrode 14,
14 are electrically connected to each other by a nickel felt 18 and are connected in parallel. Air is circulated in the hollow portion of the cylindrical single cell 15, and the fuel electrode 1 of each single cell 15 is connected.
Fuel gas is circulated in the outer peripheral portion where 4 is formed, and electromotive force is obtained by causing electrochemical reaction through the solid electrolyte 13.
【０００５】[0005]
【発明が解決しようとする課題】前述した前者の従来の
平板型燃料電池１の場合は、多数の平板状単セル５を集
合させてモジュールを大型化することによって、効率良
く高電圧を得ることができるが、大型化した際の各構成
要素の強度が余り強くないため、破損し易いという問題
点があった。In the case of the former conventional flat plate type fuel cell 1 described above, a large voltage can be efficiently obtained by assembling a large number of flat plate type single cells 5 to increase the size of the module. However, since the strength of each constituent element when the size is increased is not so strong, there is a problem that it is easily damaged.
【０００６】また、後者の従来の円筒型燃料電池１０の
場合は、剛性が高いためモジュール化が容易であるが、
各円筒型単セル１５が独立しているため、セル抵抗が高
くなるという問題があった。Further, in the case of the latter conventional cylindrical fuel cell 10, since the rigidity is high, modularization is easy,
Since each cylindrical single cell 15 is independent, there is a problem that the cell resistance becomes high.
【０００７】この発明は上記の事情に鑑みてなされたも
ので、効率良く高電圧が得られるとともに、剛性が高
く、モジュール化等の大型化が容易な円筒積式の固体電
解質型燃料電池を提供することを目的としている。The present invention has been made in view of the above circumstances, and provides a solid electrolyte fuel cell of a cylindrical stack type, which can efficiently obtain a high voltage, has high rigidity, and can be easily made large in size, such as modularization. The purpose is to do.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
この発明においては、円筒形に形成された固体電解質の
内周面と外周面とのいずれか一方に燃料電極を、いずれ
か他方に空気電極をそれぞれ備えるとともに、燃料ガス
を前記燃料電極に接触可能に流通させる燃料ガス流路
と、酸化ガスを前記空気電極に接触可能に流通させる酸
化ガス流路とを備えた円筒形セルの外側に、この円筒形
セルと同様にして、内側の円筒形セルに遊嵌可能に順次
大径に形成した円筒形セルを複数重ね、さらに内側の円
筒形セルとそれぞれ外側に隣接する円筒形セルとを、弾
性を有する導電性部材を介して電気的に接続したことを
特徴としている。In order to solve the above problems, according to the present invention, a fuel electrode is provided on one of the inner peripheral surface and the outer peripheral surface of a solid electrolyte formed in a cylindrical shape, and air is provided on the other. Outside of a cylindrical cell provided with a fuel gas flow path for allowing a fuel gas to flow in contact with the fuel electrode and an oxidizing gas flow path for allowing an oxidizing gas to flow in contact with the air electrode, respectively, each having an electrode. , In the same manner as this cylindrical cell, a plurality of cylindrical cells sequentially formed with a large diameter so that they can be loosely fitted to the inner cylindrical cell are stacked, and the inner cylindrical cell and the outer cylindrical cells are adjacent to each other. It is characterized by being electrically connected via a conductive member having elasticity.
【０００９】[0009]
【作用】上記のように構成することによって、円筒形に
形成された固体電解質の内周面と外周面とのいずれか一
方に空気電極を、いずれか他方に燃料電極を形成した円
筒形セルの外側に、順次外側へ遊嵌する内径となるよう
に同様にして形成された１または２以上の円筒形セルを
同心状に配設するとともに、同心状に配設された各円筒
形セルの間を、弾性を有する導電性部材を介して電気的
に接続することによって、円筒形セルを同心状に遊嵌し
た後、弾性を有する導電性部材によって電気的に接続す
るため、多重構造を容易に形成できるとともに、各円筒
形セル間に弾性を有する導電性部材が介１装されている
ため、各円筒形セル間の熱膨張差が吸収されて破損が防
止される。また１本の円筒形セルから高電圧で取り出す
ことができる。更に、複数の円筒形セルを同心状に重ね
て設けることにより剛性が高くなり、モジュール化が容
易となるとともに、設備の小型化が可能となる。With the above structure, a cylindrical cell having a cylindrical solid electrolyte having an air electrode on one of the inner and outer peripheral surfaces and a fuel electrode on the other is formed. On the outside, one or more cylindrical cells, which are similarly formed so as to have an inner diameter that is loosely fitted to the outside in sequence, are concentrically arranged, and between the cylindrical cells arranged concentrically. Are electrically connected through a conductive member having elasticity, the cylindrical cells are loosely fitted concentrically, and then electrically connected by the conductive member having elasticity, thereby facilitating the multiple structure. Since a conductive member having elasticity can be formed between the cylindrical cells, the difference in thermal expansion between the cylindrical cells is absorbed and damage is prevented. Moreover, it is possible to take out at high voltage from one cylindrical cell. Furthermore, by providing a plurality of cylindrical cells concentrically, the rigidity is increased, the modularization is facilitated, and the equipment can be downsized.
【００１０】[0010]
【実施例】以下にこの発明の実施例を図１ないし図４に
基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
【００１１】図１はこの発明の円筒積型燃料電池の第１
実施例を示すもので、この燃料電池２０は、酸素イオン
透過性のあるイットリア安定化ジルコニア（ＹＳＺ）を
所定寸法の円筒形に形成した固体電解質２１ａの内周面
にペロブスカイト型ランタン系酸化物からなる多孔質の
空気電極２１ｂを形成するとともに、その外周面にはニ
ッケルなどを主体とする燃料電極２１ｃを形成した円筒
形の内側セル２１が形成されている。そして、この内側
セル２１の外側には、耐熱性に優れたニッケル等の金属
からなり、ガスセパレータを兼ねる円筒形のインターコ
ネクタ２３が、内側セル２１の外周面に形成された空気
電極２１ｂとの間に所定の間隙を存して同心状に配設さ
れている。FIG. 1 shows a first cylindrical fuel cell of the present invention.
This embodiment shows a fuel cell 20 in which a perovskite-type lanthanum-based oxide is formed on the inner peripheral surface of a solid electrolyte 21a in which yttria-stabilized zirconia (YSZ) having oxygen ion permeability is formed into a cylindrical shape having a predetermined size. A porous inner air electrode 21b is formed, and a cylindrical inner cell 21 is formed on the outer peripheral surface thereof, on which a fuel electrode 21c mainly made of nickel or the like is formed. On the outside of the inner cell 21, a cylindrical interconnector 23 made of a metal such as nickel having excellent heat resistance and also serving as a gas separator is connected to the air electrode 21b formed on the outer peripheral surface of the inner cell 21. They are concentrically arranged with a predetermined gap therebetween.
【００１２】さらに、インターコネクタ２３の外周側に
は、このインターコネクタ２３より大径の円筒形に形成
された固体電解質２２ａの外周に、前記内側セル２１と
同様に多孔質の空気電極２２ｂを形成するとともに、そ
の内周面には燃料電極２２ｃを形成した円筒形の外側セ
ル２２が、前記インターコネクタ２３との間に所定の間
隙を存して同心状に遊嵌されている。Further, on the outer peripheral side of the interconnector 23, a porous air electrode 22b similar to the inner cell 21 is formed on the outer periphery of a solid electrolyte 22a formed in a cylindrical shape having a diameter larger than that of the interconnector 23. In addition, a cylindrical outer cell 22 having a fuel electrode 22c formed on the inner peripheral surface thereof is loosely fitted concentrically with the interconnector 23 with a predetermined gap.
【００１３】また内側セル２１の外周の空気電極２１ｂ
と、インターコネクタ２３の内周面との間は、ニッケル
等の導電性の高い金属製の接続部材２４によって電気的
に接続されるとともに、インターコネクタ２３の外周面
と外側セル２２の内周の燃料電極２２ｃとの間は、弾性
を有するニッケルフェルト２５を介装することによっ
て、熱膨張差を吸収可能な状態に電気的に接続されてい
る。Further, the air electrode 21b on the outer periphery of the inner cell 21
And the inner peripheral surface of the interconnector 23 are electrically connected by a connecting member 24 made of a metal having high conductivity such as nickel, and the outer peripheral surface of the interconnector 23 and the inner peripheral surface of the outer cell 22 are connected. A nickel felt 25 having elasticity is interposed between the fuel electrode 22c and the fuel electrode 22c so that the nickel electrode 25 is electrically connected to the fuel electrode 22c in a state capable of absorbing the difference in thermal expansion.
【００１４】そして、内側セル２１の中空部と、インタ
ーコネクタ２３と外側セル２２との間の間隙とは、各燃
料電極２１ｃ，２２ｃに接触するように燃料ガスを流通
させる燃料ガス流路２６となり、内側セル２１とインタ
ーコネクタ２３との間の間隙と、外側セル２２の外周の
空間とは、各空気電極２１ｂ，２２ｂに接触するように
空気を流通させて酸化ガス流路２７となる。The hollow portion of the inner cell 21 and the gap between the interconnector 23 and the outer cell 22 serve as a fuel gas flow passage 26 through which the fuel gas flows so as to come into contact with the fuel electrodes 21c and 22c. The gap between the inner cell 21 and the interconnector 23 and the space on the outer periphery of the outer cell 22 serve as an oxidizing gas flow path 27 by circulating air so as to contact the air electrodes 21b and 22b.
【００１５】次に、上記のように構成されるこの実施例
の作用を説明する。Next, the operation of this embodiment configured as described above will be described.
【００１６】内側セル２１と外側セル２２とからなる円
筒積層型燃料電池２０は、その燃料ガス流路２６，２６
にそれぞれ燃料ガスを供給するとともに、酸化ガス流路
２７および外側セル２２の外側の空間に空気を流通させ
ると、多孔質な空気電極２１ｂ，２２ｂを通過した空気
中の酸素ガスがイオンとなって固体電解質２１ａ，２２
ａを通過して、燃料電極２１ｃ，２２ｃ側に達する。そ
して、この酸素イオンは、多孔質なこの燃料電極２１
ｃ，２２ｃに接触して流れる燃料ガス中の水素ガスとそ
れぞれ電気化学的に反応して、内側セル２１と外側セル
２２とにそれぞれ起電力を発生させる。そして、内側セ
ル２１と外側セル２２とで発生した電力は、接続部材２
４とインターコネクタ２３およびニッケルフェルト２４
を介して外側セル２２と直列に接続されて、高電圧で取
り出されるようになっている。The cylindrical laminated fuel cell 20 comprising the inner cell 21 and the outer cell 22 has a fuel gas flow path 26, 26.
When the fuel gas is supplied to each of the fuel cells and the air is circulated in the space outside the oxidizing gas passage 27 and the outer cell 22, the oxygen gas in the air passing through the porous air electrodes 21b and 22b becomes ions. Solid electrolytes 21a, 22
It passes through a and reaches the fuel electrodes 21c and 22c side. Then, the oxygen ions are generated by the porous fuel electrode 21.
Electrochemically reacts with hydrogen gas in the fuel gas flowing in contact with c and 22c to generate electromotive force in the inner cell 21 and the outer cell 22, respectively. Then, the electric power generated in the inner cell 21 and the outer cell 22 is applied to the connecting member 2
4 and interconnector 23 and nickel felt 24
It is connected in series with the outer cell 22 via the and is taken out at a high voltage.
【００１７】したがって、この円筒積層型燃料電池２０
は、内側セル２１と外側セル２２とが１本の円筒形に形
成されているため、発生した電力を高電圧にして取り出
すことができるとともに、複数の単セルを同心状に積層
するため剛性が高く、したがって、この円筒積層型燃料
電池２０を多数集合させて一体化するモジュール化が容
易となり、また小型高出力化が可能となる等の利点を有
している。Therefore, this cylindrical laminated fuel cell 20
The inner cell 21 and the outer cell 22 are formed into a single cylindrical shape, so that the generated electric power can be taken out at a high voltage, and a plurality of single cells are concentrically stacked to have rigidity. Therefore, it is easy to form a module in which a large number of the stacked cylindrical fuel cells 20 are assembled and integrated, and it is possible to reduce the size and increase the output.
【００１８】また、内側セル２１の外側に所定の間隙を
持たせて外側セル２２を遊嵌し、前記間隙にインターコ
ネクタ２３を設けるとともに、インターコネクタ２３と
内側セル２１の空気電極２１ｂとの間を接続部材２４で
接続するとともに、外側セル２２の燃料電極２２ｃとの
間に、弾性を有するニッケルフェルト２５を介装して電
気的に接続する構造としたので、この円筒積層型燃料電
池２０を容易に製造することができるとともに、内側セ
ル２１と外側セル２２との間に、弾性を有するニッケル
フェルト２５が介装されているため、両セル２１，２２
間の熱膨張差がニッケルフェルト２５に吸収されて、破
損や接触不良等による故障の発生を防止することができ
る。Further, the outer cell 22 is loosely fitted to the outside of the inner cell 21 with a predetermined gap, an interconnector 23 is provided in the gap, and the interconnector 23 and the air electrode 21b of the inner cell 21 are provided. And the fuel electrode 22c of the outer cell 22 are electrically connected to each other through the nickel felt 25 having elasticity. Both the cells 21 and 22 can be manufactured easily, and the elastic nickel felt 25 is interposed between the inner cell 21 and the outer cell 22.
The difference in thermal expansion between the two is absorbed by the nickel felt 25, and it is possible to prevent the occurrence of failure due to breakage, poor contact, or the like.
【００１９】また図２は、この発明の第２実施例を示す
もので、前記第１実施例においては、円筒形に形成され
た固体電解質の内周に空気電極を、また外周に燃料電極
をそれぞれ形成した２つのセルを同心状に遊嵌した場合
について説明したが、本実施例においては、円筒形に形
成された各固体電解質の内側に空気電極を、外側に燃料
電極をそれぞれ形成した内側セル、中央セルおよび外側
セルの３つの円筒形セルを同心状に積層形成したもの
で、以下図面に基づいて説明する。FIG. 2 shows a second embodiment of the present invention. In the first embodiment, an air electrode is provided on the inner periphery of the cylindrical solid electrolyte and a fuel electrode is provided on the outer periphery thereof. The case where two cells formed respectively are concentrically loosely described has been described, but in the present embodiment, an air electrode is formed inside each solid electrolyte formed in a cylindrical shape and an inside is formed in which a fuel electrode is formed outside. Three cylindrical cells, that is, a cell, a central cell, and an outer cell, are concentrically stacked, and will be described below with reference to the drawings.
【００２０】内側セル３１と中央セル３２と外側セル３
３との内径寸法の異なる３つの円筒形セルを同心状に配
設したこの燃料電池３０は、各円筒形セル３１，３２，
３３のそれぞれ内周側の空気電極３１ｂ，３２ｂ，３３
ｂを残して固体電解質３１ａ，３２ａ，３３ａおよび燃
料電極３１ｃ，３２ｃ，３３ｃの一部を溝状に切欠い
て、各空気電極３１ｂ，３２ｂ，３３ｂの外周側に、コ
ネクタ３６がそれぞれ燃料電極３１ｃ，３２ｃ，３３ｃ
と非接触状態に形成されている。そして、内側、中央お
よび外側の３つの円筒形セル３１，３２，３３を、セル
相互間に所定の間隙を持たせて同心状に配設されるとと
もに、各間隙には、ニッケルとジルコニアのサーメット
からなるガスセパレータを兼ねた円筒形のインターコネ
クタ３４，３４が、それぞれ内方の円筒形セル３１，３
２の燃料電極３１ｃ，３２ｃとの間に弾性を有するニッ
ケルフェルト３５を介して電気的に接続されている。更
に、インターコネクタ３４，３４のそれぞれ外方の円筒
形セル３２，３３の空気電極３２ｂ，３３ｂとの間を、
耐熱性の金属からなる接続部材３７を介して電気的に接
続されている。Inner cell 31, central cell 32 and outer cell 3
The fuel cell 30 in which three cylindrical cells having different inner diameters from those of No. 3 are concentrically arranged,
Air electrodes 31b, 32b, 33 on the inner peripheral side of 33, respectively
b, the solid electrolytes 31a, 32a, 33a and the fuel electrodes 31c, 32c, 33c are partially cut out in a groove shape, and the connector 36 is provided on the outer peripheral side of each of the air electrodes 31b, 32b, 33b. 32c, 33c
Is formed in a non-contact state. Then, three cylindrical cells 31, 32, 33 on the inner side, the center, and the outer side are concentrically arranged with a predetermined gap between the cells, and a cermet of nickel and zirconia is provided in each gap. The cylindrical interconnectors 34 and 34 also serving as gas separators are composed of inner cylindrical cells 31 and 3, respectively.
The two fuel electrodes 31c, 32c are electrically connected via a nickel felt 35 having elasticity. Furthermore, between the air electrodes 32b and 33b of the outer cylindrical cells 32 and 33 of the interconnectors 34 and 34, respectively,
It is electrically connected via a connecting member 37 made of a heat-resistant metal.
【００２１】そして、内側セル３１の外周の燃料電極３
１ｃとインターコネクタ３４との間と、中央セル３２の
外周の燃料電極３２ｃとその外側のインターコネクタ３
４との間には燃料ガス流路３８がそれぞれ形成されると
ともに、インターコネクタ３４，３４の各外周面と中央
セル３２および外側セル３３のそれぞれ内周の空気電極
３２ｂ，３３ｂとの間は、空気を流通させる酸化ガス流
路３９，３９がそれぞれ形成されている。The fuel electrode 3 on the outer periphery of the inner cell 31
1c and the interconnector 34, the fuel electrode 32c on the outer periphery of the central cell 32, and the interconnector 3 on the outside thereof.
4, fuel gas flow paths 38 are formed respectively, and between the outer peripheral surfaces of the interconnectors 34, 34 and the air electrodes 32b, 33b of the inner circumferences of the central cell 32 and the outer cell 33, respectively, Oxidizing gas flow paths 39, 39 for circulating air are formed respectively.
【００２２】そして、上記のように構成される円筒積層
型燃料電池３０は、外側セル３３の外周の燃料電極３３
ｃを切欠いた部分から露出するコネクタ３６を、同様に
構成された他の円筒積層型燃料電池３０の外側セル３３
の燃料電極３３ｃに、ニッケルフェルト３５を介するこ
とによって直列に接続され、かつ熱膨張差を吸収可能な
状態に配設されるとともに、隣接する別の円筒積層型燃
料電池３０とは、それぞれの外側セル３３，３３の外周
の燃料電極３３ｃ，３３ｃ同士が、ニッケルフェルト３
５を介して並列に接続されている。The cylindrical laminated fuel cell 30 having the above-described structure has the fuel electrode 33 on the outer periphery of the outer cell 33.
The connector 36 exposed from the notched portion c is used as an outer cell 33 of another cylindrical laminated fuel cell 30 having the same structure.
Is connected in series to the fuel electrode 33c of the fuel cell through the nickel felt 35 and is arranged so as to be able to absorb the difference in thermal expansion. The fuel electrodes 33c, 33c on the outer periphery of the cells 33, 33 are connected to each other by the nickel felt 3
5 are connected in parallel.
【００２３】次に、上記のように構成されるこの実施例
の作用を説明する。Next, the operation of this embodiment configured as described above will be described.
【００２４】内側セル３１と中央セル３２と外側セル３
３の３つの円筒形セルからなる複数の円筒積層型燃料電
池３０を、ニッケルフェルト３５を介して直並列に接続
したモジュールは、内側セル３１の中空部を含む各酸化
ガス流路３９に空気を流通させるとともに、各燃料ガス
流路３８と外側セル３３の外側の空間に燃料ガスを流通
させると、多孔質な空気電極３１ｂ，３２ｂ，３３ｂを
通過した空気中の酸素ガスがイオンとなって固体電解質
３１ａ，３２ａ，３３ａを通過して、それぞれ燃料電極
３１ｃ，３２ｃ，３３ｃ側に達する。そして、この酸素
イオンは、多孔質なこの燃料電極３１ｃ，３２ｃ，３３
ｃに接触して流れる燃料ガス中の水素ガスとそれぞれ電
気化学的に反応して、内側セル３１と中央セル３２と外
側セル３３とにそれぞれ起電力を発生させる。そして、
内側セル３１、中央セル３２および外側セル３３でそれ
ぞれ発生した電流は、インターコネクタ３５とコネクタ
３６と接続部材３７によって直列に接続されて、高電圧
で取り出されるようになっている。Inner cell 31, central cell 32 and outer cell 3
A module in which a plurality of cylindrical stacked fuel cells 30 each composed of three cylindrical cells No. 3 and No. 3 are connected in series in parallel via a nickel felt 35 is used to supply air to each oxidizing gas passage 39 including the hollow portion of the inner cell 31. When the fuel gas is circulated, and the fuel gas is circulated in the space outside each fuel gas flow path 38 and the outer cell 33, the oxygen gas in the air that has passed through the porous air electrodes 31b, 32b, 33b becomes ions and becomes solid. After passing through the electrolytes 31a, 32a, 33a, they reach the fuel electrode 31c, 32c, 33c side, respectively. Then, the oxygen ions are generated by the porous fuel electrodes 31c, 32c, 33.
The hydrogen gas in the fuel gas flowing in contact with c electrochemically reacts with each other to generate electromotive force in the inner cell 31, the central cell 32, and the outer cell 33, respectively. And
The electric currents respectively generated in the inner cell 31, the central cell 32, and the outer cell 33 are connected in series by the interconnector 35, the connector 36, and the connecting member 37 so as to be extracted at a high voltage.
【００２５】したがって、この実施例の円筒積層型の燃
料電池３０は、内側セル３１と中央セル３２と外側セル
３３との３つの円筒形セルを、同心状に重ねて１本に形
成したので剛性が高く、したがって、この燃料電池３０
を多数集合させるモジュール化が容易となるとともに、
発生した電力を高電圧にして取り出すことができる。Therefore, in the cylindrical laminated fuel cell 30 of this embodiment, the three cylindrical cells of the inner cell 31, the central cell 32, and the outer cell 33 are concentrically stacked and formed into a single cylinder. And therefore this fuel cell 30
It becomes easy to modularize a large number of
The generated power can be taken out as a high voltage.
【００２６】さらに、図３はこの発明の第３実施例を示
すもので、燃料電池４０は、内側セル４１と外側セル４
２とからなり、イットリア安定化ジルコニア（ＹＳＺ）
を円筒形に形成した固体電解質４１ａの内周面に、ペロ
ブスカイト型ランタン系酸化物からなる多孔質の空気電
極４１ｂを形成するとともに、この空気電極４１ｂの更
に内側に、集電用の多孔質の円筒状またはリング状のイ
ンターコネクタ４３が形成されている。また前記固体電
解質４１ａの外周面には、ニッケルなどを主体とする燃
料電極４１ｃが形成されている。そして、この内側セル
４１の外側には、耐熱性に優れたニッケル等の金属から
なり、ガスセパレータを兼ねる円筒形のインターコネク
タ４４が、内側セル２１の外周面に形成された燃料電極
４１ｃとの間に所定の間隙を存して同心状に配設されて
いる。Further, FIG. 3 shows a third embodiment of the present invention. The fuel cell 40 comprises an inner cell 41 and an outer cell 4.
2 and composed of yttria-stabilized zirconia (YSZ)
A porous air electrode 41b made of a perovskite-type lanthanum-based oxide is formed on the inner peripheral surface of the solid electrolyte 41a formed in a cylindrical shape, and a porous electrode for collecting current is further provided inside the air electrode 41b. A cylindrical or ring-shaped interconnector 43 is formed. A fuel electrode 41c mainly made of nickel or the like is formed on the outer peripheral surface of the solid electrolyte 41a. On the outside of the inner cell 41, a cylindrical interconnector 44 made of a metal such as nickel having excellent heat resistance and also serving as a gas separator is connected to the fuel electrode 41c formed on the outer peripheral surface of the inner cell 21. They are concentrically arranged with a predetermined gap therebetween.
【００２７】さらに、インターコネクタ４４の外周側に
は、このインターコネクタ４４より大径の円筒形に形成
された外側セル４２が、その固体電解質４２ａの内周
に、前記内側セル４１と同様に多孔質の空気電極４２ｂ
を形成するとともに、その外周面には燃料電極４２ｃを
形成した円筒形の外側セル４２が、前記インターコネク
タ４４との間に所定の間隙を存して同心状に配設されて
いる。Further, on the outer peripheral side of the interconnector 44, an outer cell 42 formed in a cylindrical shape having a diameter larger than that of the interconnector 44 is formed on the inner periphery of the solid electrolyte 42a like the inner cell 41. Quality air electrode 42b
And a cylindrical outer cell 42 having a fuel electrode 42c formed on the outer peripheral surface thereof is arranged concentrically with the interconnector 44 with a predetermined gap.
【００２８】また内側セル４１の外周の燃料電極４１ｃ
と、インターコネクタ４４の内周面との間には、ニッケ
ルフェルト４５を介装することによって、熱膨張差を吸
収可能な状態に電気的に接続されるとともに、前記イン
ターコネクタ４４の外周面と外側セル４２の内周面に形
成された空気電極４２ｂとの間は、ニッケル等の導電性
の高い金属製の接続部材４６によって電気的に接続され
ている。Further, the fuel electrode 41c on the outer periphery of the inner cell 41
, And an inner peripheral surface of the interconnector 44, a nickel felt 45 is interposed between the inner peripheral surface of the interconnector 44 and the inner peripheral surface of the interconnector 44 so as to be electrically connected to the inner peripheral surface of the interconnector 44 so as to be able to absorb the difference in thermal expansion. The air electrode 42b formed on the inner peripheral surface of the outer cell 42 is electrically connected by a connecting member 46 made of a highly conductive metal such as nickel.
【００２９】そして、内側セル４１の中空部と、インタ
ーコネクタ４４と外側セル４２との間の間隙とは、各空
気電極４１ｂ，４２ｂに接触するように空気を流通させ
る酸化ガス流路４７となり、内側セル４１とインターコ
ネクタ４４との間の間隙と、外側セル４２の外周の空間
とは、各燃料電極４１ｃ，４２ｃに接触するように空気
を流通させて燃料ガス流路４６となる。The hollow portion of the inner cell 41 and the gap between the interconnector 44 and the outer cell 42 serve as an oxidizing gas flow passage 47 for circulating air so as to contact the air electrodes 41b, 42b. The gap between the inner cell 41 and the interconnector 44 and the space on the outer periphery of the outer cell 42 serve as a fuel gas flow path 46 by circulating air so as to contact the fuel electrodes 41c, 42c.
【００３０】そして、前記第１実施例の場合と同様に、
燃料電池４０の酸化ガス流路４７，４７に空気を流通さ
せるとともに、外側セル４２の外側の空間および内側セ
ル４１とインターコネクタ４４との間の燃料ガス流路４
６，４６に空気を流通させると、空気中の酸素ガスがイ
オンとなって固体電解質４１ａ，４２ａを通過し、多孔
質な燃料電極４１ｃ，４２ｃにおいて、燃料ガス中の水
素ガスと電気化学的に反応して、内側セル４１と外側セ
ル４２とにそれぞれ起電力を発生させる。そして、内側
セル４１と外側セル４２とで発生した電流は、内側セル
４１と外側セル４２のとを、インターコネクタ４４とニ
ッケルフェルト４５と、接続部材４６とを介して直列に
接続して、第１実施例の場合と同様に高電圧で取り出さ
れるようになっている。Then, as in the case of the first embodiment,
Air is circulated through the oxidizing gas passages 47, 47 of the fuel cell 40, and the fuel gas passage 4 between the outer space of the outer cell 42 and the inner cell 41 and the interconnector 44 is provided.
When air is circulated through 6, 46, oxygen gas in the air becomes ions and passes through the solid electrolytes 41a, 42a, and electrochemically reacts with hydrogen gas in the fuel gas at the porous fuel electrodes 41c, 42c. By reacting, electromotive force is generated in each of the inner cell 41 and the outer cell 42. The current generated in the inner cell 41 and the outer cell 42 connects the inner cell 41 and the outer cell 42 in series via the interconnector 44, the nickel felt 45, and the connecting member 46, and As in the case of the first embodiment, the high voltage is taken out.
【００３１】また、図４はこの発明の第４実施例を示す
もので、前記各実施例においては、燃料電池を構成する
燃料電極と固体電解質と空気電極との配置を、例えば円
筒形に形成された固体電解質の内周面に燃料電極が、ま
た外周面に空気電極がそれぞれ形成された太さの異なる
複数の円筒形セルを同心状に重ねて配設したのに対し
て、この実施例においては、同心状に配設した際に内側
セルと外側セルとのそれぞれの燃料電極同士、または空
気電極同士が互いに対向するように配設したもので、以
下図面に基づいて説明する。FIG. 4 shows a fourth embodiment of the present invention. In each of the above embodiments, the fuel electrode, the solid electrolyte and the air electrode constituting the fuel cell are arranged, for example, in a cylindrical shape. In this embodiment, a plurality of cylindrical cells having different thicknesses, each having a fuel electrode formed on the inner peripheral surface of the solid electrolyte and an air electrode formed on the outer peripheral surface thereof, were concentrically stacked. In the above, the fuel cells of the inner cells and the outer cells are arranged so as to face each other when they are arranged concentrically, or the air electrodes are arranged to face each other, which will be described below with reference to the drawings.
【００３２】この燃料電池５０は、内側セル５１と外側
セル５２とで構成されている。内側セル５１は、円筒形
に形成された固体電解質５１ａの内周面に空気電極５１
ｂを、外周面に燃料電極５１ｃがそれぞれ形成されてい
る。また外側セル５２の場合は逆に、円筒形に形成され
た固体電解質５２ａの内周面に燃料電極５２ｃが、外周
面に空気電極５１ｂがそれぞれ形成され、内側セル５１
の内周の空気電極５１ｂの更に内側には集電用のインナ
ーコネクタ５３が形成されている。The fuel cell 50 is composed of an inner cell 51 and an outer cell 52. The inner cell 51 has an air electrode 51 on the inner peripheral surface of a solid electrolyte 51a formed in a cylindrical shape.
b, the fuel electrode 51c is formed on the outer peripheral surface. On the contrary, in the case of the outer cell 52, the fuel electrode 52c is formed on the inner peripheral surface of the solid electrolyte 52a formed in a cylindrical shape, and the air electrode 51b is formed on the outer peripheral surface thereof.
An inner connector 53 for current collection is formed further inside the air electrode 51b on the inner periphery of the.
【００３３】また、内側セル５１の空気電極５１ｂの外
周側には、固体電解質５１ａおよび燃料電極５１ｃの一
部を切欠き、この切欠き部分にコネクタ５４が、燃料電
極５１ｃと非接触状態に形成されている。また、外側セ
ル５２の空気電極５２ｂの内周側には、固体電解質５２
ａおよび燃料電極５２ｃの一部を溝状に切欠き、この切
欠き部分にコネクタ５４が、燃料電極５１ｃと非接触状
態に形成されている。Further, a part of the solid electrolyte 51a and the fuel electrode 51c is cut out on the outer peripheral side of the air electrode 51b of the inner cell 51, and a connector 54 is formed in this cutout portion in a non-contact state with the fuel electrode 51c. Has been done. The solid electrolyte 52 is formed on the inner peripheral side of the air electrode 52b of the outer cell 52.
a and a part of the fuel electrode 52c are notched in a groove shape, and a connector 54 is formed in this notch in a non-contact state with the fuel electrode 51c.
【００３４】そして、内側セル５１の外側に外側セル５
２が配設されて、内側セル５１の外周の燃料電極５１ｃ
と、外側セル５２の内周の燃料電極５２ｃとが、所定の
間隔で対向配置されるとともに、内側セル５１のコネク
タ５４と、外側セル５２のコネクタ５４とが、ニッケル
フェルト５５を介して並列に接続される。そして内側セ
ル５１と外側セル５２との間の間隙は、対向配置された
燃料電極５１ｃ，５２ｃにそれぞれ接触して流れるよう
に燃料ガスが供給される燃料ガス流路５６となり、また
内側セル５１の中空部および外側セル５２の外周の空間
は、空気電極５１ｂ，５２ｂにそれぞれ接触して流通す
るように空気が流通する酸化ガス流路５７となってい
る。The outer cell 5 is provided outside the inner cell 51.
2 is disposed, and the fuel electrode 51c on the outer periphery of the inner cell 51 is provided.
And the fuel electrode 52c on the inner periphery of the outer cell 52 are arranged to face each other at a predetermined interval, and the connector 54 of the inner cell 51 and the connector 54 of the outer cell 52 are arranged in parallel via the nickel felt 55. Connected. The gap between the inner cell 51 and the outer cell 52 serves as a fuel gas flow path 56 to which the fuel gas is supplied so as to flow in contact with the fuel electrodes 51c and 52c arranged opposite to each other. The outer space of the hollow portion and the outer cell 52 serves as an oxidizing gas flow path 57 through which air flows so as to contact and flow with the air electrodes 51b and 52b, respectively.
【００３５】そして、燃料電池５０の燃料ガス流路５６
に燃料ガスが供給されるとともに、酸化ガス流路５７，
５７に空気を流通させると、空気中の酸素ガスがイオン
となって固体電解質５１ａ，５２ａを通過し、多孔質な
燃料電極５１ｃ，５２ｃにおいて、燃料ガス中の水素ガ
スと電気化学的に反応して、内側セル５１と外側セル５
２とにそれぞれ起電力を発生させる。そして、内側セル
５１と外側セル５２とで発生した電流は、内側セル５１
と外側セル５２との各コネクタ５４，５４間に配設され
たニッケルフェルト５５によって並列に接続されて、高
アンペアの電流として取り出されるようになっている。Then, the fuel gas flow path 56 of the fuel cell 50.
Fuel gas is supplied to the oxidant gas flow path 57,
When air is circulated through 57, oxygen gas in the air becomes ions and passes through the solid electrolytes 51a, 52a, and electrochemically reacts with hydrogen gas in the fuel gas at the porous fuel electrodes 51c, 52c. Inside cell 51 and outside cell 5
An electromotive force is generated in each of 2 and 3. Then, the current generated in the inner cell 51 and the outer cell 52 is
Are connected in parallel by a nickel felt 55 arranged between the respective connectors 54 of the outer cell 52 and the outer cell 52, and are taken out as a high amperage current.
【００３６】また、この実施例においては、内側セル５
１と外側セル５２の燃料電極５１ｃ，５２ｃが互いに対
向するように配置したので、両セル５１，５２間の間隙
に一種類のガスを流通させれば良いため、前記第１，
２，３の各実施例において必要とされたガスセパレータ
を不要とすることができる。Also, in this embodiment, the inner cell 5
Since the fuel electrodes 51c and 52c of the outer cell 52 and the outer cell 52 are arranged to face each other, one kind of gas may be passed through the gap between the cells 51 and 52.
The gas separator required in each of the second and third embodiments can be eliminated.
【００３７】なお、この実施例においては同心状に隣接
する２つのセルの燃料電極同士を対向配置した場合につ
いて説明したが、空気電極同士を対向配置させてもよ
く、例えば、本実施例の燃料電池５０の外側セル５２の
更に外側に円筒形セルを配設して三重構造とした場合に
も、その空気電極同士を対向配置させて同様に実施する
ことができる。In this embodiment, the case where the fuel electrodes of two cells concentrically adjacent to each other are arranged to face each other has been described. However, the air electrodes may be arranged to face each other. Even when a cylindrical cell is arranged further outside the outer cell 52 of the battery 50 to form a triple structure, the air electrodes can be arranged to face each other and the same operation can be performed.
【００３８】ここで、この発明における好ましい態様の
例を列記する。Here, examples of preferred embodiments of the present invention will be listed.
【００３９】内側の円筒形セルと、その外側に隣接する
円筒形セルとが、一方の円筒形セルの燃料電極と他方の
円筒形セルの空気電極がガスセパレータを介して対向す
るように同心状に配設されるとともに、弾性を有する導
電性部材を介して電気的に接続されていることを特徴と
する円筒積層型燃料電池。The inner cylindrical cell and the outer cylindrical cell adjacent thereto are concentric so that the fuel electrode of one cylindrical cell and the air electrode of the other cylindrical cell face each other through the gas separator. And a cylindrical stacked fuel cell, which is electrically connected via a conductive member having elasticity.
【００４０】内側の円筒形セルと、その外側に隣接する
円筒形セルとが、両方の円筒形セルの燃料電極同士、あ
るいは空気電極同士が対向するように同心状に配設され
ていることを特徴とする円筒積層型燃料電池。The inner cylindrical cell and the outer cylindrical cell adjacent thereto are concentrically arranged so that the fuel electrodes of both cylindrical cells or the air electrodes of both cylindrical cells face each other. Characteristic cylindrical stacked fuel cell.
【００４１】内側の円筒形セルと、その外側に隣接する
円筒形セルとが、両方の円筒形セルの燃料電極同士、あ
るいは空気電極同士が対向するように同心状に配設する
とともに、弾性を有する導電性部材を介して電気的に接
続されていることを特徴とする円筒積層型燃料電池。The inner cylindrical cell and the outer cylindrical cell adjacent to the outer cylindrical cell are concentrically arranged so that the fuel electrodes or the air electrodes of both cylindrical cells face each other, and elasticity is provided. A cylindrical stacked fuel cell, which is electrically connected via a conductive member of the fuel cell.
【００４２】[0042]
【発明の効果】以上、説明したように、この発明の円筒
積層型燃料電池は、複数の円筒形セルを、所定の間隙を
存して同心状に配設するとともに、燃料ガスを前記円筒
形セルの燃料電極に接触可能に流通させる燃料ガス流路
と、酸化ガスを前記円筒形セルの空気電極に接触可能に
流通させる酸化ガス流路とを設け、さらに内側の円筒形
セルとそれぞれ外側に隣接する円筒形セルとを、弾性を
有する導電性部材を介して電気的に接続する構造とした
ので、この円筒積層型燃料電池を容易に製造することが
できるとともに、内外セル間の熱膨張差が吸収されて、
熱膨脹時の破損や収縮時の接触不良等による故障の発生
を防止することができる。また、円筒形セルの剛性を向
上でき、円筒形セルを集合させるモジュール化が容易と
なるとともに、各円筒形セルの出力を高くできるので、
固体電解質型燃料電池による発電設備の小型化および高
出力化が可能となる。As described above, in the cylindrical laminated fuel cell of the present invention, a plurality of cylindrical cells are concentrically arranged with a predetermined gap and the fuel gas is in the cylindrical shape. A fuel gas flow passage that allows contact with the fuel electrode of the cell and an oxidizing gas flow passage that allows contact of the oxidizing gas with the air electrode of the cylindrical cell are provided. Since the structure is such that adjacent cylindrical cells are electrically connected to each other through a conductive member having elasticity, this cylindrical stacked fuel cell can be easily manufactured, and the thermal expansion difference between the inner and outer cells is also increased. Is absorbed,
It is possible to prevent damage due to thermal expansion and failure due to contact failure during contraction. Also, the rigidity of the cylindrical cells can be improved, the modularization of the cylindrical cells can be facilitated, and the output of each cylindrical cell can be increased,
It is possible to reduce the size and increase the output of power generation equipment using the solid oxide fuel cell.
【図１】この発明の円筒積層型燃料電池の第１実施例の
円筒形セルを示す断面正面図である。FIG. 1 is a sectional front view showing a cylindrical cell of a first embodiment of a cylindrical laminated fuel cell according to the present invention.
【図２】同じく第２実施例の円筒形セルを示す断面正面
図である。FIG. 2 is a sectional front view showing a cylindrical cell of the second embodiment.
【図３】同じく第３実施例の円筒形セルを示す断面正面
図である。FIG. 3 is a sectional front view showing a cylindrical cell of the third embodiment as well.
【図４】同じく第４実施例の円筒形セルを示す断面正面
図である。FIG. 4 is a sectional front view showing a cylindrical cell of the fourth embodiment.
【図５】従来の平板型燃料電池の一例を示すスタックの
断面正面図である。FIG. 5 is a sectional front view of a stack showing an example of a conventional flat plate fuel cell.
【図６】従来の円筒型燃料電池の一例を示すモジュール
の断面側面図である。FIG. 6 is a sectional side view of a module showing an example of a conventional cylindrical fuel cell.
２１…内側セル、 ２１ａ…固体電解質、 ２１ｂ…空
気電極、 ２１ｃ…燃料電極、 ２２…外側セル、 ２
２ａ…固体電解質、 ２２ｂ…空気電極、 ２２ｃ…燃
料電極、 ２３…インターコネクタ、 ２５…ニッケル
フェルト、 ２６…燃料ガス流路、 ２７…酸化ガス流
路。21 ... inner cell, 21a ... solid electrolyte, 21b ... air electrode, 21c ... fuel electrode, 22 ... outer cell, 2
2a ... Solid electrolyte, 22b ... Air electrode, 22c ... Fuel electrode, 23 ... Interconnector, 25 ... Nickel felt, 26 ... Fuel gas channel, 27 ... Oxidizing gas channel.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中島 武憲 東京都江東区木場一丁目５番１号 株式会 社フジクラ内 (72)発明者 山岡 悟 東京都江東区木場一丁目５番１号 株式会 社フジクラ内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Takenori Nakajima 1-5-1 Kiba, Koto-ku, Tokyo Fujikura Ltd. (72) Inventor Satoru Yamaoka 1-1-5 Kiba, Koto-ku, Tokyo Shareholders Inside Fujikura
Claims (1)
と外周面とのいずれか一方に燃料電極を、いずれか他方
に空気電極をそれぞれ備えるとともに、燃料ガスを前記
燃料電極に接触可能に流通させる燃料ガス流路と、酸化
ガスを前記空気電極に接触可能に流通させる酸化ガス流
路とを備えた円筒形セルの外側に、この円筒形セルと同
様にして、内側の円筒形セルに遊嵌可能に順次大径に形
成した円筒形セルを複数重ね、さらに内側の円筒形セル
とそれぞれ外側に隣接する円筒形セルとを、弾性を有す
る導電性部材を介して電気的に接続したことを特徴とす
る円筒積層型燃料電池。1. A fuel electrode is provided on one of an inner peripheral surface and an outer peripheral surface of a solid electrolyte formed in a cylindrical shape, and an air electrode is provided on the other, respectively, and a fuel gas can contact the fuel electrode. On the outside of a cylindrical cell provided with a fuel gas flow passage for circulating the fuel gas flow passage and an oxidizing gas flow passage for allowing the oxidizing gas to flow in contact with the air electrode, in the same manner as this cylindrical cell, the inner cylindrical cell A plurality of cylindrical cells that are sequentially formed to have a large diameter so that they can be loosely fitted to each other, and the inner cylindrical cells and the outer cylindrical cells are electrically connected to each other through a conductive member having elasticity. A cylindrical laminated fuel cell characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6206052A JPH0850914A (en) | 1994-08-08 | 1994-08-08 | Cylindrical layer-built fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6206052A JPH0850914A (en) | 1994-08-08 | 1994-08-08 | Cylindrical layer-built fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0850914A true JPH0850914A (en) | 1996-02-20 |
Family
ID=16517083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6206052A Pending JPH0850914A (en) | 1994-08-08 | 1994-08-08 | Cylindrical layer-built fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0850914A (en) |
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