JPH04149966A - Solid electrolyte-type fuel battery - Google Patents
Solid electrolyte-type fuel batteryInfo
- Publication number
- JPH04149966A JPH04149966A JP2275706A JP27570690A JPH04149966A JP H04149966 A JPH04149966 A JP H04149966A JP 2275706 A JP2275706 A JP 2275706A JP 27570690 A JP27570690 A JP 27570690A JP H04149966 A JPH04149966 A JP H04149966A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- air
- fuel
- gas
- manifold
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 70
- 239000007787 solid Substances 0.000 title claims description 11
- 239000002737 fuel gas Substances 0.000 claims abstract description 36
- 239000003792 electrolyte Substances 0.000 claims abstract description 35
- 125000006850 spacer group Chemical group 0.000 claims abstract description 24
- 238000007599 discharging Methods 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 62
- 238000000034 method Methods 0.000 claims description 15
- 239000007772 electrode material Substances 0.000 claims description 12
- 238000007639 printing Methods 0.000 claims description 8
- 239000007784 solid electrolyte Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000005192 partition Methods 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- -1 oxygen ions Chemical class 0.000 description 6
- 238000007650 screen-printing Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000007606 doctor blade method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007582 slurry-cast process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Fuel Cell (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は燃料の有する化学エネルギーを直接電気エネル
ギーに変換させるエネルギ一部門で用いる燃料電池のう
ち、特に、固体電解質型燃料電池に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention particularly relates to solid oxide fuel cells among fuel cells used in the energy sector that directly converts the chemical energy of fuel into electrical energy. .
［従来の技術］
現在、固体電解質型燃料電池は、第一世代の燃料電池と
してのリン酸型燃料電池、第二世代の燃料電池としての
溶融炭酸塩型燃料電池に代る第三世代の燃料電池として
、その開発に向は検討が進められている。[Prior Art] Currently, solid oxide fuel cells are a third generation fuel cell that replaces the phosphoric acid fuel cell as the first generation fuel cell and the molten carbonate fuel cell as the second generation fuel cell. Studies are underway to develop it as a battery.
現在検討が進められている固体電解質型燃料電池には、
平板型のものとか、円筒型のもの等があり、そのうち、
平板型の固体電解質型燃料電池は、第４図に一例を示す
如く、たとえば、イツトリア安定化ジルコニア系イオン
導電体を適用した電解質板１の両面側に、多孔質の空気
極２と燃料極３とを重ね合わせるように配置して接着し
、且つ空気極２側と燃料極３側にガス通路４ａと５ａを
形成するためのガス通路構造体４５を配置し、空気極２
側のガス通路４ａには空気（０２ガス）を、又、燃料極
３側のガス通路５ａには燃料ガス（Ｈ２ガス）を流すよ
うにして、空気極２側での反応により生じた酸素イオン
０−を電解質板ｌを通して燃料極３側へ到達させるよう
にし、一方、燃料極３側では、上記燃料ガスＨ２と上記
酸素イオンＯ〜か反応し、水Ｈ２０として出されるよう
にしたものを１セルＣとし、かかるセルＣをセパレータ
６を介して多層に積層した構成のものがある。Solid oxide fuel cells, which are currently being studied, include:
There are flat plate types and cylindrical types, among which,
As shown in FIG. 4, a flat plate type solid electrolyte fuel cell has, for example, a porous air electrode 2 and a porous fuel electrode 3 on both sides of an electrolyte plate 1 made of an yttria-stabilized zirconia-based ionic conductor. A gas passage structure 45 is arranged to form gas passages 4a and 5a on the air electrode 2 side and the fuel electrode 3 side, and the air electrode 2
Air (02 gas) is passed through the gas passage 4a on the side, and fuel gas (H2 gas) is passed through the gas passage 5a on the fuel electrode 3 side, so that oxygen ions generated by the reaction on the air electrode 2 side are 0- is made to reach the fuel electrode 3 side through the electrolyte plate 1, and on the other hand, on the fuel electrode 3 side, 1 There is a structure in which cells C are laminated in multiple layers with a separator 6 in between.
上記の如き平板型の固体電解質型燃料電池は、狭い容積
で大電力が取り出せ、且つセルＣの厚さを薄くすればす
るほど積層したときにコンパクトにでき、その上、大電
力が得られるという特徴があり、特に、電解質板１は薄
いほど酸素イオン０−の通りがよくなり、性能をアップ
させることができる。The flat plate type solid oxide fuel cell described above can extract a large amount of power in a small volume, and the thinner the cell C is, the more compact it can be when stacked, and it is also said that a large amount of power can be obtained. In particular, the thinner the electrolyte plate 1 is, the better the passage of oxygen ions 0- is, and the performance can be improved.
［発明が解決しようとする課題］
ところが、第４図に示した如き構成のものでは、ガス通
路４ａ、 ５ａにガスを通すための外部ガスマニホール
ドが必要となり、装置が大型化すると共に、外部のガス
マニホールドの製作が大変であり、特に、高温のためガ
スマニホールドもセラミックス又は耐熱合金にする必要
があり、接着性、ガスシール性が難しく、殊に、耐熱合
金の場合は熱膨張を内部のスタックと合わせるのが難し
い、という問題かあり、又、外部ガスマニホールドの場
合、基本的にガスの流れは直交流となり、温度分布が悪
いこと、セルＣの空気極２、燃料極３はポーラスである
ため、空気と燃料ガスが周辺より若干漏れて外部ガスマ
ニホールド内で混合するおそれがある。[Problems to be Solved by the Invention] However, with the configuration shown in FIG. 4, an external gas manifold is required to pass gas through the gas passages 4a and 5a, which increases the size of the device and increases the It is difficult to manufacture gas manifolds, and in particular, the gas manifolds must be made of ceramics or heat-resistant alloys due to the high temperatures. Adhesion and gas sealing properties are difficult. In addition, in the case of an external gas manifold, the gas flow is basically a cross flow, resulting in poor temperature distribution, and the air electrode 2 and fuel electrode 3 of cell C are porous. Therefore, there is a risk that air and fuel gas may leak slightly from the surrounding area and mix within the external gas manifold.
そこで、本発明は、ガスマニホールド部の構造の単純化
とガスシール性の向上を図り、マニホールド部での空気
と燃料ガスの接触のおそれがないようにした平板型の固
体電解質型燃料電池を提供しようとするものである。SUMMARY OF THE INVENTION Therefore, the present invention provides a flat plate solid oxide fuel cell, which has a simplified structure of the gas manifold part and improved gas sealing properties, thereby eliminating the risk of contact between air and fuel gas in the manifold part. This is what I am trying to do.
［課題を解決するための手段］
本発明は、上記課題を解決するために、電解質板の両面
に、多孔質体とした薄膜の空気極と燃料極を接着し、該
空気極と燃料極の表面に、同じ電極材を重ねて構成して
なるガス通路構造体にてガス通路を形成し、且つ上記電
解質板の両面の周辺部に、上記空気極及び燃料極の各周
辺を覆うようにする固体電解質よりなるスペーサを配置
して１セルとし、該セルをセパレータを介し積層してス
ペーサとセパレータを接合するようにし、更に、上記セ
ル及びセパレータの周辺部−側と他側の両方に空気と燃
料ガスの各給排用マニホールドを形成し、各セルの空気
極側では、ガス通路を空気の供給用マニホールドと排出
用マニホールドとに連通させると共に、各セルの燃料極
側では、ガス通路を燃料ガスの供給用マニホールドと排
出用マニホールドとに連通させた構成とする。[Means for Solving the Problems] In order to solve the above problems, the present invention adheres porous thin film air electrodes and fuel electrodes to both sides of an electrolyte plate, and connects the air electrodes and fuel electrodes. A gas passage is formed on the surface by a gas passage structure formed by stacking the same electrode materials, and the periphery of both sides of the electrolyte plate is provided to cover each periphery of the air electrode and the fuel electrode. A spacer made of a solid electrolyte is arranged to form one cell, the cells are stacked with a separator in between, and the spacer and the separator are joined together, and furthermore, air is supplied to both the peripheral side and the other side of the cell and the separator. Each fuel gas supply/discharge manifold is formed, and on the air electrode side of each cell, the gas passage is communicated with the air supply manifold and the air discharge manifold, and on the fuel electrode side of each cell, the gas passage is connected to the air supply/discharge manifold. The gas supply manifold and the discharge manifold are connected to each other.
上記電解質板の両面への空気極と燃料極の接着はスクリ
ーン印刷法で多重に実施して厚み方向の組成を変えても
よい。又、上記空気極上又は燃料極上へのガス通路構造
体の設置は、多重印刷法により電極材を多重に接着して
成形させるようにしてもよく、またドクターブレード法
で成膜したものを積層後に削り取ってガス通路となる溝
を形成するようにすることもできる。The air electrode and the fuel electrode may be adhered to both sides of the electrolyte plate in multiple ways using a screen printing method to change the composition in the thickness direction. In addition, the gas passage structure may be installed on the air electrode or fuel electrode by bonding and forming electrode materials in multiple layers using a multiple printing method, or by laminating a film formed by a doctor blade method. It is also possible to cut it out to form a groove that serves as a gas passage.
［作 用］
空気は空気供給用マニホールドから空気極側のガス通路
を拡散されて流れた後、反対側の排出用マニホールドに
集められて排出される。[Function] After air is diffused and flows from the air supply manifold through the gas passage on the air electrode side, it is collected in the discharge manifold on the opposite side and discharged.
方、燃料ガスは燃料ガス供給用マニホールドから燃料極
側のガス通路を拡散されて流れた後、反対側の排出用マ
ニホールドに集められて排出される。この場合、空気極
側は燃料ガス給排用マニホールドを区画形成しているマ
スクプレートとしてのスペーサが空気極周辺に配置して
あり、燃料極側でも同様に空気の給排用マニホールドを
区画形成しているマスクプレートとしてのスペーサが燃
料極周辺に配置しであるので、多孔質体とした空気極、
燃料極てあっても周辺にガスが逃げることがなくなり、
又、空気と燃料ガスか混ざるおそれもなくなる。又、マ
ニホールドは、空気と燃料ガスの給排用として電解質板
、スペーサ、セパレータの周辺部に孔を設けただけの構
成でガスがマニホールドに集中するようになるので、マ
ニホールドの構造を単純化することができる。On the other hand, after the fuel gas is diffused and flows from the fuel gas supply manifold through the gas passage on the fuel electrode side, it is collected in the discharge manifold on the opposite side and discharged. In this case, on the air electrode side, a spacer serving as a mask plate is placed around the air electrode to define a manifold for supplying and discharging fuel gas, and on the fuel electrode side, a manifold for supplying and discharging air is similarly defined. Since a spacer serving as a mask plate is placed around the fuel electrode, the porous air electrode,
Even if there is a fuel pole, gas will not escape to the surrounding area,
Also, there is no possibility that air and fuel gas will mix. In addition, the manifold simply has holes around the electrolyte plate, spacer, and separator for supplying and discharging air and fuel gas, and the gas concentrates in the manifold, simplifying the structure of the manifold. be able to.
［実 施 例］ 以下、本発明の実施例を図面を参照して説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.
第１図乃至第３図は本発明の一実施例を示すもので、薄
膜構造とした電解質板１を空気極２と燃料極３の画電極
で両面から挟み、空気極２側に空気を供給するようにす
ると共に、燃料極３側に燃料ガスを供給するようにしで
あるものを１セルＣとし、各セルをセパレータ６を介し
て多層に積層するようにしである構成において、上記電
解質板１の周辺部の一側に空気への供給用マニホールド
７と燃料ガスＦの供給用マニホールド８を設けると共に
、周辺部の他側に、空気の排出用マニホールド９と燃料
ガスの排出用マニホールド１０を設け、且つ電解質板１
の片面には、たとえば、スクリーン印刷法によりスラリ
ー状の電極材を塗り付けて多孔質の空気極２を接着成形
させ、該空気極２面に上記空気の給排用マニホールド７
と９を開放させるようにし、又、電解質板１の反対面に
は、同様にスクリーン印刷法によりスラリー状の電極材
を塗布し多孔質の燃料極３を接着成形させて、燃料極３
面に上記燃料ガスの給排用マニホールド８と１０を開放
させ、空気Ａは供給用マニホールド７から空気極２に沿
い流れて排出用マニホールド９より排出されると共に、
燃料ガスＦは供給用マニホールド８から燃料極３に沿い
流れて排出用マニホールド１０より排出されるようにし
て、空気と燃料ガスが平行流となるようにする。Figures 1 to 3 show an embodiment of the present invention, in which an electrolyte plate 1 having a thin film structure is sandwiched between picture electrodes of an air electrode 2 and a fuel electrode 3 from both sides, and air is supplied to the air electrode 2 side. In a configuration in which one cell C is configured to supply fuel gas to the fuel electrode 3 side, and each cell is stacked in multiple layers with a separator 6 in between, the electrolyte plate 1 A manifold 7 for supplying air and a manifold 8 for supplying fuel gas F are provided on one side of the periphery, and a manifold 9 for discharging air and a manifold 10 for discharging fuel gas are provided on the other side of the periphery. , and electrolyte plate 1
On one side of the air electrode 2, a porous air electrode 2 is adhesively molded by applying a slurry-like electrode material using, for example, a screen printing method, and the air supply/discharge manifold 7 is attached to the air electrode 2 surface.
and 9 are open, and on the opposite side of the electrolyte plate 1, a slurry-like electrode material is similarly applied by the screen printing method, and a porous fuel electrode 3 is adhesively molded to form the fuel electrode 3.
The fuel gas supply and discharge manifolds 8 and 10 are opened on the surface, and the air A flows from the supply manifold 7 along the air electrode 2 and is discharged from the discharge manifold 9.
The fuel gas F flows from the supply manifold 8 along the fuel electrode 3 and is discharged from the discharge manifold 10, so that air and fuel gas flow in parallel.
上記空気極２上と燃料極３上には、それぞれスラリー状
にした電極材を多重印刷法により多層に塗布させて所要
厚さのガス通路構造体１１を複数列にわたり配置させて
、空気極２側にはガス通路１２を形成すると共に、燃料
極３側にはガス通路１３を形成するようにし、更に、上
記電解質板１の両面には、該電解質板１の周辺に設けた
燃料ガスの給排用マニホールド８．１０に対応する燃料
ガスの給排用マニホールド８．１０を残して中央部分を
切り抜き周辺部のみとしである固体電解質よりなる空気
極側スペーサ１４と、電解質板１の周辺に設けた空気の
給排用マニホールド７．９に対応する空気の給排用マニ
ホールド７．９を残して中央部分を切り抜き周辺部のみ
としである固体電解質よりなる燃料極側スペーサ１５と
を配置し、電解質板１と、その両面の空気極２、燃料極
３と、スペーサ１４、Ｉ５とからなるセルＣをセパレー
タ６を介し積層させるようにし、セパレータ６の周辺の
一側と他側にも、空気の給排用マニホールド７．９と燃
料ガスの給排用マニホールド８．１０を設け、積層した
ときに各マニホールド７、８．９．１０が積層方向に連
通されて流路が形成されるようにし、又、積層時にセパ
レータ６の周辺部とスペーサ１４の接合部及びセパレー
タ６の周辺部とスペ〜す１５の接合部は、セラミックス
系接着剤で接着し、周辺をガラス等の溶融密封剤で覆い
ガスのリークがないようにする。On the air electrode 2 and the fuel electrode 3, electrode materials made into a slurry are coated in multiple layers using a multiplex printing method, and gas passage structures 11 of a required thickness are arranged in multiple rows. A gas passage 12 is formed on the side, and a gas passage 13 is formed on the fuel electrode 3 side.Furthermore, a fuel gas supply provided around the electrolyte plate 1 is formed on both sides of the electrolyte plate 1. The fuel gas supply/discharge manifold 8.10 corresponding to the exhaust manifold 8.10 is cut out in the center, and only the peripheral part is cut out.An air electrode side spacer 14 made of solid electrolyte is provided around the electrolyte plate 1. The air supply and discharge manifold 7.9 corresponding to the air supply and discharge manifold 7.9 corresponding to the air supply and discharge manifold 7.9 is cut out in the center part, and a fuel electrode side spacer 15 made of a solid electrolyte is placed. A cell C consisting of a plate 1, an air electrode 2 on both sides, a fuel electrode 3, a spacer 14, and an I5 is stacked with a separator 6 in between, and air is also formed on one side and the other side of the periphery of the separator 6. A supply/discharge manifold 7.9 and a fuel gas supply/discharge manifold 8.10 are provided so that when stacked, each manifold 7, 8.9.10 communicates in the stacking direction to form a flow path, In addition, during lamination, the joints between the periphery of the separator 6 and the spacer 14 and the joint between the periphery of the separator 6 and the spacer 15 are bonded with ceramic adhesive, and the periphery is covered with a molten sealant such as glass and sealed with gas. Make sure there are no leaks.
空気極２側へ供給される空気（０２ガス）Ａは、空気供
給用マニホールド７からガス通路１２を流される間に反
応により酸素を減少して空気排出用マニホールド９に集
中させられ、該排出用マニホールド９より排出される。Air (02 gas) A supplied to the air electrode 2 side is caused to reduce oxygen by reaction while flowing through the gas passage 12 from the air supply manifold 7, and is concentrated in the air discharge manifold 9. It is discharged from the manifold 9.
この間に多孔質体としである空気極２内を通って電解質
板１に達した空気（０□ガス）から反応により生成され
た酸素イオンＯ−は、電解質板ｌを通して燃料極３へと
到達させられる。一方、燃料極３側では、燃料ガス（Ｈ
２ガス）Ｆが燃料ガス供給用マニホールド８からガス通
路１３へ導入され、該ガス通路１３を流れる間に酸素イ
オンＯと反応させられた後、排出用マニホールド１０よ
り排出させられる。During this time, oxygen ions O- generated by reaction from the air (0□ gas) that passed through the air electrode 2, which is a porous body, and reached the electrolyte plate 1, reach the fuel electrode 3 through the electrolyte plate 1. It will be done. On the other hand, on the fuel electrode 3 side, fuel gas (H
2 gas) F is introduced from the fuel gas supply manifold 8 into the gas passage 13, is reacted with oxygen ions O while flowing through the gas passage 13, and is then discharged from the discharge manifold 10.
上記において、ガス通路１２と１３は、空気極２と燃料
極３の表面に、電極材によるガス通路構遺体１１を多重
印刷法により接着成形させることによって形成している
ので、複雑なガス通路１２゜１３でも簡単に形成できる
と共に、空気極２側を流れる空気Ａや燃料極３側を流れ
る燃料ガスＦの流通性が良好となり、且つ空気極２及び
燃料極３は、スクリーン印刷法により電解質板１に接着
成形されているので、電解質板１への接着性がよくて電
解質板の支持を強固に行うことができ、酸素イオンの通
しがより良くできて性能の向上を図ることが可能であり
、又、ガス通路構造体１１を電流が流れる。又、空気極
２及び燃料極３は多孔質体であるが、空気極２側及び燃
料極３にはそれぞれマスクプレートとしてのスペーサ１
４及び１５を配して、セパレータ６とは接着させると共
に周縁をガラス等の溶融密封剤で覆った構成とした上で
、空気極２側では燃料ガスの給排用マニホールド８．１
０を区画形成し、燃料極３側では空気の給排用マニホー
ルド７．９を区画形成しであるので、周辺からガスが漏
れるようなことがなくなると共に、電極の部分で空気と
燃料ガスか接触するようなおそれもない。In the above, the gas passages 12 and 13 are formed by adhesively molding the gas passage structure 11 made of electrode material on the surfaces of the air electrode 2 and the fuel electrode 3 using a multiple printing method. The air electrode 2 and the fuel electrode 3 can be easily formed by forming an electrolyte plate using a screen printing method. 1, it has good adhesion to the electrolyte plate 1 and can firmly support the electrolyte plate, allowing oxygen ions to pass through better and improving performance. Also, a current flows through the gas passage structure 11. Furthermore, although the air electrode 2 and fuel electrode 3 are porous bodies, spacers 1 as mask plates are provided on the air electrode 2 side and the fuel electrode 3, respectively.
4 and 15 are arranged and adhered to the separator 6, and the periphery is covered with a molten sealant such as glass, and on the air electrode 2 side, a manifold 8.1 for supplying and discharging fuel gas is installed.
0 is partitioned, and the air supply/discharge manifold 7.9 is partitioned on the fuel electrode 3 side, so there is no possibility of gas leaking from the surrounding area, and there is no contact between air and fuel gas at the electrode part. There is no fear that it will.
なお、上記実施例では、ガス通路１２．１３を形成する
場合に、多重印刷法、すなわち、スラリー状とした電極
材をスクリーン印刷によりカス通路構造体１１を何層に
も重ねて印刷して行く方法で電流の導体部分を構成する
ガス通路構造体１１を成る高さに成形し、ガス通路構造
体１１間にガス通路１２．１３を形成するようにした例
を示したか、他のガス通路成形方法として、電極材をド
クターブレード法やカレンダロール法て成膜多層化した
後、表面を削り取ってガス通路となる溝を形成すること
もできること、更に、射出成形法、泥漿鋳込法等によっ
て成形したものを電極膜上に付着させるようにするもの
もあること、電解質板１の両面に配置する空気極２と燃
料極３をスクリーン印刷法で接着成形させる場合を示し
たが、スクリーン印刷基以外の方法で成形させるように
してもよいこと、等は勿論であるが、多孔質体の電極２
．３の配置において、印刷法を採用すれば、電極厚み方
向にポアサイズを徐々に変えて行くことが可能となると
共に、ガス通路１２．１３の形成における多重印刷法を
採用すれば、多重印刷の過程で電極材の成分を徐々に変
えることができて電極やセパレータ膜との接着性を良く
し、緻密化による導電性向上を図ることが可能となる。In the above embodiment, when forming the gas passages 12 and 13, the waste passage structure 11 is printed in multiple layers using a multiple printing method, that is, by screen printing using slurry electrode material. This is an example in which the gas passage structures 11 constituting the current conductor portion are formed to a height of 12, 13, and gas passages 12, 13 are formed between the gas passage structures 11. As a method, it is possible to form a multilayer electrode material using a doctor blade method or a calender roll method, and then scrape the surface to form grooves that will serve as gas passages.Furthermore, it is possible to form grooves that will become gas passages by using an injection molding method, a slurry casting method, etc. In some cases, the air electrode 2 and fuel electrode 3 disposed on both sides of the electrolyte plate 1 are adhesively molded using a screen printing method. It goes without saying that the electrode 2 of the porous body may be molded by the method described above.
．． In the arrangement 3, if a printing method is used, it becomes possible to gradually change the pore size in the electrode thickness direction, and if a multiple printing method is used to form the gas passages 12 and 13, the multiple printing process can be changed. By gradually changing the composition of the electrode material, it is possible to improve the adhesion with the electrode and separator film, and to improve the conductivity through densification.
［発明の効果］
以上述べた如く、本発明の固体電解質型燃料電池によれ
ば、周辺部の一側と他側に空気と燃料ガスの各給排用マ
ニホールドを形成した電解質板の両面の周辺部を除く中
央部分に、薄膜状の多孔質の空気極と燃料極を配置して
、空気極側では空気の給排用マニホールドが連通ずるよ
うにすると共に、燃料極側では燃料ガスの給排用マニホ
ールドが連通ずるようにし、且つ空気極側と燃料極側に
は電極材よりなるガス通路構造体を配置してそれぞれガ
ス通路を形成し、更に上記電解質板の両面側に、電極部
をくり抜いて周辺部のみとした固体電解質よりなるスペ
ーサを配して、空気極側のスペーサは周辺の一側と他側
に燃料ガスの給排用マニホールドを区画して形成し、燃
料極側のスペーサは周辺の一側と他側に空気の給排用マ
ニホールドを区画して形成し、これらを１セルとして、
周辺部の一側と他側に空気と燃料ガスの各給排用マニホ
ールドを形成したセパレータを介し積層するようにし、
セパレータの周辺とスペーサとの接合部を接着剤にて接
着させた構成としであるので、次の如き優れた効果を奏
し得る。[Effects of the Invention] As described above, according to the solid oxide fuel cell of the present invention, the periphery of both sides of the electrolyte plate, in which manifolds for supplying and discharging air and fuel gas are formed on one side and the other side of the periphery. A thin film-like porous air electrode and a fuel electrode are placed in the center area, excluding the area, so that the manifold for supplying and discharging air is communicated on the air electrode side, and the manifold for supplying and discharging fuel gas is connected on the fuel electrode side. In addition, gas passage structures made of electrode materials are arranged on the air electrode side and the fuel electrode side to form gas passages, and electrode parts are cut out on both sides of the electrolyte plate. A spacer made of solid electrolyte is arranged only at the periphery, and the spacer on the air electrode side is formed by dividing a fuel gas supply/discharge manifold on one side and the other side of the periphery, and the spacer on the fuel electrode side is Air supply and exhaust manifolds are divided and formed on one side and the other side of the periphery, and these are considered as one cell.
They are stacked with separators formed on one side and the other side of the periphery with manifolds for supplying and discharging air and fuel gas,
Since the connecting portion between the periphery of the separator and the spacer is bonded with an adhesive, the following excellent effects can be achieved.
（ｉ） 多孔質体の空気極側と同じく多孔質体の燃料
極側に流されるガスはスペーサの存在によりリークする
ことが少なく、又、異なるガスのマニホールドが区画形
成されているので、空気と燃料ガスとがマニホールド部
分て接触するようなことがな（なる。(i) Gas flowing to the fuel electrode side of the porous body as well as the air electrode side of the porous body is less likely to leak due to the presence of the spacer, and since the manifolds for different gases are separated, it is possible to This prevents the fuel gas from coming into contact with the manifold.
（ｉｉ） 内部マニホールド型で且つ電極の周辺を覆
うようにするスペーサの使用により、ガス通路の簡易化
とシール性の向上が図れると共にマニホールド部の構造
を単純化できる。(ii) By using an internal manifold type spacer that covers the periphery of the electrode, it is possible to simplify the gas passage and improve sealing performance, and to simplify the structure of the manifold part.
（ｉの 多孔質の空気極と燃料極を電解質板の両面に−
様に密着させているので、電解質板への良好な接触性が
確保できて空気極側からの酸素イオンが電解質板を通過
して燃料極へ到達する際の導通性を良くすることができ
ると共に、ガス通路を確保できてガスの流通性を良くす
ることができて、反応を促進させて性能を向上させるこ
とができる。(The porous air electrode and fuel electrode of i are placed on both sides of the electrolyte plate.
Since they are in close contact with each other, it is possible to ensure good contact with the electrolyte plate, and it is possible to improve the conductivity when oxygen ions from the air electrode side pass through the electrolyte plate and reach the fuel electrode. , gas passages can be secured, gas flowability can be improved, reactions can be accelerated, and performance can be improved.
■ 電解質板の両面の空気極と燃料極の各表面に印刷法
でガス通路構造体を接着成形すると、複雑なガス通路で
も簡単に形成することができ、又、空気と燃料ガスの流
れを平行流とすることにより、熱応力を減少させること
ができることになる。■ By adhering and molding gas passage structures on each surface of the air electrode and fuel electrode on both sides of the electrolyte plate, even complex gas passages can be easily formed, and the flow of air and fuel gas can be made parallel. By creating a flow, thermal stress can be reduced.
第１図は本発明の固体電解質型燃料電池の一実施例を示
す斜視図、第２図は第１図の■方向よりの断面図、第３
図は第１図を分解して示す図、第４図は従来の固体電解
質型燃料電池の概略斜視図である。
１・・・電解質板、２・・・空気極、３・・・燃料極、
６・・・セパレータ、７・・・空気の供給用マニホール
ド、８・・・燃料ガスの供給用マニホールド、９・・・
空気の排出用マニホールド、１０・・・燃料ガスの排出
用マニホールド、１１・・・ガス通路構造体、１２．１
３・・・ガス通路、１４・・・空気極側スペーサ、１５
・・・燃料極側スペーサ。FIG. 1 is a perspective view showing one embodiment of the solid oxide fuel cell of the present invention, FIG. 2 is a cross-sectional view taken from the ■ direction in FIG.
The figure is an exploded view of FIG. 1, and FIG. 4 is a schematic perspective view of a conventional solid oxide fuel cell. 1... Electrolyte plate, 2... Air electrode, 3... Fuel electrode,
6... Separator, 7... Air supply manifold, 8... Fuel gas supply manifold, 9...
Manifold for discharging air, 10... Manifold for discharging fuel gas, 11... Gas passage structure, 12.1
3... Gas passage, 14... Air electrode side spacer, 15
...Fuel electrode side spacer.
Claims (2)
極と燃料極を配置し、該空気極と燃料極の表面に、電極
材よりなるガス通路構造体を配置してそれぞれガス通路
を形成し、且つ上記電解質板の空気極側に、該空気極の
周辺を覆うようにする固体電解質よりなる空気極側スペ
ーサを、又、電解質板の燃料極側に、該燃料極の周辺を
覆うようにする固体電解質よりなる燃料極側スペーサを
それぞれ配置したものを１セルとして、該セルをセパレ
ータを介し積層してセパレータと上記両スペーサとを接
着させ、上記セルの電解質板及び両スペーサとセパレー
タの各周辺部の一側と他側に空気と燃料ガスの各給排用
マニホールドを形成してなる構成を有することを特徴と
する固体電解質型燃料電池。(1) A porous thin film air electrode and fuel electrode are arranged on both sides of the electrolyte plate, and a gas passage structure made of an electrode material is arranged on the surfaces of the air electrode and fuel electrode, respectively. An air electrode side spacer made of a solid electrolyte that forms a passage and covers the periphery of the air electrode on the air electrode side of the electrolyte plate; One cell is a cell in which fuel electrode side spacers made of solid electrolyte are arranged so as to cover the cells, and the cells are stacked with a separator in between, and the separator and both spacers are adhered, and the electrolyte plate and both spacers of the cell are stacked. What is claimed is: 1. A solid oxide fuel cell characterized by having a configuration in which manifolds for supplying and discharging air and fuel gas are formed on one side and the other side of each peripheral portion of a separator.
接着させてガス通路構造体を成形してなる請求項（１）
記載の固体電解質型燃料電池。(2) Claim (1) in which the gas passage structure is formed by bonding electrode materials to the surfaces of the air electrode and the fuel electrode by a printing method.
The solid oxide fuel cell described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2275706A JPH04149966A (en) | 1990-10-15 | 1990-10-15 | Solid electrolyte-type fuel battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2275706A JPH04149966A (en) | 1990-10-15 | 1990-10-15 | Solid electrolyte-type fuel battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04149966A true JPH04149966A (en) | 1992-05-22 |
Family
ID=17559236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2275706A Pending JPH04149966A (en) | 1990-10-15 | 1990-10-15 | Solid electrolyte-type fuel battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04149966A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001003214A1 (en) * | 1999-07-02 | 2001-01-11 | Ibiden Co., Ltd. | Separator of solid-polymer fuel cell, method of manufacture thereof, and solid-polymer fuel cell |
| WO2003007413A1 (en) * | 2001-07-13 | 2003-01-23 | Ceramic Fuel Cells Limited | Solid oxide fuel cell stack configuration |
| JP2008066127A (en) * | 2006-09-07 | 2008-03-21 | Kyocera Corp | Cell stack device and fuel cell module |
| US7396384B2 (en) | 2002-02-26 | 2008-07-08 | Ceramic Fuel Cells Limited | Fuel cell gas separator |
| US7648789B2 (en) | 2001-07-13 | 2010-01-19 | Ceremic Fuel Cells Limited | Fuel cell gas separator plate with paths of electrically conductive material of a silver-glass composite |
| JP2010161074A (en) * | 2009-01-07 | 2010-07-22 | National Taiwan Univ Of Science & Technology | Fuel cell and its manufacturing method |
| JPWO2009119771A1 (en) * | 2008-03-26 | 2011-07-28 | 財団法人ファインセラミックスセンター | Stack structure for stacked solid oxide fuel cell, stacked solid oxide fuel cell, and manufacturing method thereof |
-
1990
- 1990-10-15 JP JP2275706A patent/JPH04149966A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001003214A1 (en) * | 1999-07-02 | 2001-01-11 | Ibiden Co., Ltd. | Separator of solid-polymer fuel cell, method of manufacture thereof, and solid-polymer fuel cell |
| WO2003007413A1 (en) * | 2001-07-13 | 2003-01-23 | Ceramic Fuel Cells Limited | Solid oxide fuel cell stack configuration |
| US7648789B2 (en) | 2001-07-13 | 2010-01-19 | Ceremic Fuel Cells Limited | Fuel cell gas separator plate with paths of electrically conductive material of a silver-glass composite |
| US7396384B2 (en) | 2002-02-26 | 2008-07-08 | Ceramic Fuel Cells Limited | Fuel cell gas separator |
| JP2008066127A (en) * | 2006-09-07 | 2008-03-21 | Kyocera Corp | Cell stack device and fuel cell module |
| JPWO2009119771A1 (en) * | 2008-03-26 | 2011-07-28 | 財団法人ファインセラミックスセンター | Stack structure for stacked solid oxide fuel cell, stacked solid oxide fuel cell, and manufacturing method thereof |
| JP2012099493A (en) * | 2008-03-26 | 2012-05-24 | Japan Fine Ceramics Center | Stack structure for multilayer type solid oxide fuel cell, multilayer type solid oxide fuel cell, and method of manufacturing the same |
| JP2012109251A (en) * | 2008-03-26 | 2012-06-07 | Japan Fine Ceramics Center | Laminated solid oxide fuel cell stack structure, laminated solid oxide fuel cell, and manufacturing method thereof |
| JP2010161074A (en) * | 2009-01-07 | 2010-07-22 | National Taiwan Univ Of Science & Technology | Fuel cell and its manufacturing method |
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