JPH08124591A - Manufacture of solid electrolyte type fuel cell - Google Patents
Manufacture of solid electrolyte type fuel cellInfo
- Publication number
- JPH08124591A JPH08124591A JP6312245A JP31224594A JPH08124591A JP H08124591 A JPH08124591 A JP H08124591A JP 6312245 A JP6312245 A JP 6312245A JP 31224594 A JP31224594 A JP 31224594A JP H08124591 A JPH08124591 A JP H08124591A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- interconnector
- power generation
- green sheet
- fuel cell
- 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 27
- 239000007784 solid electrolyte Substances 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000011521 glass Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 11
- 239000000919 ceramic Substances 0.000 claims abstract description 7
- 238000010248 power generation Methods 0.000 claims description 31
- 238000005304 joining Methods 0.000 claims description 14
- 239000012528 membrane Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 2
- 239000011800 void material Substances 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 14
- 239000002002 slurry Substances 0.000 description 11
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000003566 sealing material Substances 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000007606 doctor blade method Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Fuel Cell (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、固体電解質型燃料電池
の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a solid oxide fuel cell.
【０００２】[0002]
【従来の技術】平板型の固体電解質型燃料電池は、例え
ば図３の分解斜視図に示すような基本構造からなる。す
なわち、燃料極１、固体電解質膜２、及び空気極３の各
層を重ねて、三層膜を構成する発電部４があり、これが
燃料電池の最小単位となって、外部から供給される水素
及び空気（酸素）と反応を起こし、電気を発生する。2. Description of the Related Art A flat plate type solid oxide fuel cell has a basic structure as shown in an exploded perspective view of FIG. 3, for example. That is, the fuel electrode 1, the solid electrolyte membrane 2, and the air electrode 3 are overlaid on each other to form a three-layer membrane, which is a power generation unit 4. This is the minimum unit of the fuel cell, and hydrogen supplied from outside and Reacts with air (oxygen) to generate electricity.
【０００３】この発電部４を直列に接続、積層して大き
な電圧を得るために、発電部４を積層する際、インター
コネクタ５を用いて発電部と発電部を仕切っている。そ
して、インターコネクタ５は燃料極１に入る水素と空気
極３に入る空気（酸素）が混じるのを防ぎ、二つの発電
部を直列に繋ぐための電子伝導体の役目も果たす。な
お、この発電部４とそれを挟む両側のインターコネクタ
５を合わせてセルと呼んでいる。In order to obtain a large voltage by connecting and stacking the power generation units 4 in series, an interconnector 5 is used to partition the power generation units from each other when the power generation units 4 are stacked. The interconnector 5 prevents the hydrogen entering the fuel electrode 1 and the air (oxygen) entering the air electrode 3 from mixing with each other, and also serves as an electron conductor for connecting the two power generating units in series. The power generation unit 4 and the interconnectors 5 on both sides of the power generation unit 4 are collectively referred to as a cell.
【０００４】インターコネクタ５の両面には、互いに直
角方向に一連の溝６が設けられ、燃料極側には水素が、
また、空気極側には空気（酸素）が入る流路になってい
る。そして、このインターコネクタ５と発電部４の接合
面は、溝６に平行な両端部において、水素と空気（酸
素) を隔離して、両者が混じるのを防がなければならな
い。そこで、この部分にはガスシールの機能を持つ材料
を使った接合を行う必要がある。A series of grooves 6 are formed on both sides of the interconnector 5 at right angles to each other, and hydrogen is introduced to the fuel electrode side.
Further, the air electrode side has a flow path through which air (oxygen) enters. The joint surface between the interconnector 5 and the power generation section 4 must separate hydrogen and air (oxygen) at both ends parallel to the groove 6 to prevent the two from mixing with each other. Therefore, it is necessary to join this part using a material having a gas sealing function.
【０００５】従来はこの接合にあたり、スラリー（泥
漿）状にしたガラス系材料のシール材を、インタ−コネ
クタ５の両端部のガスシール部７に塗布し、これに対向
する発電部４の両端部を接着して加熱溶融した後、冷却
固化することによって発電部４とインターコネクタ５を
接合する方法をとっている。Conventionally, at the time of this joining, a sealing material made of a glass material in the form of a slurry (slurry) is applied to the gas seal portions 7 at both ends of the interconnector 5, and both end portions of the power generating portion 4 facing this are applied. Is adhered, heated and melted, and then cooled and solidified to join the power generation unit 4 and the interconnector 5.
【０００６】なお、燃料極１及び空気極３の面積は、固
体電解質膜２のそれよりも小さく、燃料極１及び空気極
３は、固体電解質膜２の両面のそれぞれ破線で囲まれた
部分に位置する。これは、インターコネクタ５のガスシ
ール部７に相当する幅だけ小さい面積である。The area of the fuel electrode 1 and the air electrode 3 is smaller than that of the solid electrolyte membrane 2, and the fuel electrode 1 and the air electrode 3 are located on both sides of the solid electrolyte membrane 2 in the portions surrounded by broken lines. To position. This is an area smaller by a width corresponding to the gas seal portion 7 of the interconnector 5.
【０００７】[0007]
【発明が解決しようとする課題】しかし、接合材として
スラリー状のガラス系シール材を用いるこの方法によれ
ば、均一な肉厚のガラス層の形成が困難であり、さらに
接着界面にボイドを生じやすく、気密性を損なう可能性
が高く、接合時における歩留まりを低下させる欠点を持
っている。また、運転時（約１０００℃）には溶融して
液体となるため、ガスシールとしての機能は優れている
が、長時間使用しているうちに流失し、ガスシール機能
を損なう恐れがある。However, according to this method, which uses a glass-like sealing material in the form of a slurry as a joining material, it is difficult to form a glass layer having a uniform thickness, and a void is generated at the bonding interface. It has a drawback that it is easy to do, airtightness is likely to be impaired, and the yield at the time of joining is reduced. Further, since it melts and becomes a liquid during operation (about 1000 ° C.), it has an excellent function as a gas seal, but it may be washed away during long-term use and the gas seal function may be impaired.
【０００８】これを防ぐために、セラミック系充填材と
液体のガラス系シール材をあらかじめ混合したスラリー
状シール材を用いる方法が報告されている。（特開平３
−６７４６６号公報）しかし、スラリー状のシール材を
用いるこの方法は、加熱して接合する際に、発電部４と
インターコネクタ５の密着性を上げるために荷重をかけ
ると、スラリーが接合部から外へはみ出してしまうこと
がある。このため、接合層の厚さにばらつきが生じた
り、発電部４やインターコネクタ５が汚染される恐れが
ある。ときには、はみ出したスラリーに含まれるガラス
により、荷重に用いている耐火物と発電部４が接合して
しまい、両者を分離する際に発電部４を破損してしまう
こともある。In order to prevent this, a method of using a slurry-like sealing material in which a ceramic filler and a liquid glass sealing material are mixed in advance has been reported. (JP-A-3
However, in this method using a sealing material in the form of a slurry, when a load is applied to increase the adhesion between the power generation section 4 and the interconnector 5 when heating and joining, the slurry is removed from the joining section. It may protrude outside. Therefore, there is a possibility that the thickness of the bonding layer may vary and the power generation unit 4 and the interconnector 5 may be contaminated. At times, the refractory used for the load and the power generation section 4 are bonded by the glass contained in the protruding slurry, and the power generation section 4 may be damaged when the two are separated.
【０００９】ところで、スラリーを一定の厚さに塗布す
るには、従来よりスクリーン印刷方法があるが、この方
法は接合部分の形状が平坦な面に限られること、接合部
分の形状に合わせたパターンを有するスクリーン印刷版
を用意する必要があること、ガスシール部７とそれ以外
の導電部の接合部分に、ガラス系材料のシール材及び導
電性接合材という二種類のスラリーを隣接して塗布する
のが困難であること、などの欠点も有している。By the way, in order to apply the slurry to a certain thickness, there is a screen printing method from the prior art. However, this method requires that the shape of the joint is limited to a flat surface, and that the pattern conforming to the shape of the joint is used. It is necessary to prepare a screen printing plate having the above, and two kinds of slurries, that is, a glass-based sealing material and a conductive bonding material, are applied adjacently to the bonding portion of the gas sealing portion 7 and the other conductive portion. It also has drawbacks such as difficulty in manufacturing.
【００１０】そこで本発明の目的は、燃料極、固体電解
質膜及び空気極からなる発電部とインターコネクタの各
端部の接合において、均一な肉厚のガラス層を形成し、
接合材がはみ出して接合層の厚さにばらつきが生じた
り、汚染されることなく、荷重に用いる耐火物と発電部
が接合することを防ぎ、かつ、接着界面にボイドが発生
せず、気密性を保つことができる方法を提供することに
ある。Therefore, an object of the present invention is to form a glass layer having a uniform thickness at the joining of each end portion of an interconnector with a power generating portion consisting of a fuel electrode, a solid electrolyte membrane and an air electrode,
The bonding material does not protrude and the thickness of the bonding layer varies, and it is not contaminated. It prevents the refractory used for load from bonding with the power generation part, and does not generate voids at the bonding interface, which is airtight. It is to provide a method that can keep.
【００１１】[0011]
【課題を解決するための手段】本発明は、請求項１にお
いて、燃料極、固体電解質膜及び空気極からなる発電部
とインターコネクタの各端部の間に、ガラス系材料から
なる薄板を介在させ、前記薄板を加熱溶融し、冷却して
前記発電部と前記インターコネクタを接合することを特
徴とするものである。According to a first aspect of the present invention, a thin plate made of a glass-based material is interposed between each end of an interconnector and a power generation section composed of a fuel electrode, a solid electrolyte membrane and an air electrode. Then, the thin plate is heated and melted, and cooled to bond the power generation unit and the interconnector.
【００１２】また、請求項２において、前記薄板はガラ
ス系材料の粉末を含むグリーンシートを熱処理したもの
であることを特徴とするものである。[0012] In the second aspect, the thin plate is formed by heat-treating a green sheet containing powder of a glass-based material.
【００１３】また、請求項３において、燃料極、固体電
解質膜及び空気極からなる発電部とインターコネクタの
各端部の間に、ガラスとセラミックの混合材料からなる
グリーンシートを介在させ、前記グリーンシートを加熱
溶融し、冷却して前記発電部と前記インターコネクタを
接合することを特徴とするものである。Further, according to claim 3, a green sheet made of a mixed material of glass and ceramic is interposed between each end portion of the interconnector and the power generation portion including the fuel electrode, the solid electrolyte membrane and the air electrode, and the green sheet is formed. The sheet is heated and melted, and cooled to join the power generation unit and the interconnector.
【００１４】[0014]
【作用】本発明によれば、バインダ−などの有機系材料
を用いない薄板状のガラスを接合材として用いることに
より、荷重を掛けてもこれが接合部からはみ出さない。
従って、発電部やインタ−コネクタを汚染することな
く、ボイドのない任意で均一な厚さの気密性の高い接合
層を形成することができる。これにより、発電部とイン
ターコネクタで構成されるセルの厚さの制御を容易に行
うことができ、工程の簡素化及び発電部とインターコネ
クタ接合時の歩留まりを向上させることができる。According to the present invention, the thin plate-shaped glass which does not use the organic material such as the binder is used as the bonding material, so that the glass does not protrude from the bonding portion even if a load is applied.
Therefore, it is possible to form a highly airtight bonding layer having an arbitrary uniform thickness without voids without contaminating the power generation unit or the interconnector. This makes it possible to easily control the thickness of the cell formed by the power generation unit and the interconnector, simplify the process, and improve the yield at the time of joining the power generation unit and the interconnector.
【００１５】しかも、前記薄板状のガラスは、ガラス系
材料の粉末を含むグリーンシートを熱処理したものであ
るため、任意の厚さの薄板を簡便容易に形成できる。Moreover, since the thin glass sheet is a green sheet containing powder of glass-based material, it is possible to easily and easily form a thin sheet having an arbitrary thickness.
【００１６】また、ガラスとセラミックの混合材料から
なるグリーンシート状の接合材を用いることにより、荷
重を掛けてもはみ出したりすることなく、複雑な形状の
部位においても任意の位置に、接合層の厚さを一定に設
定することができる。また、セラミックが多孔質の骨格
となり、接合部の比較的大きな隙間を埋め、さらにガラ
ス系材料が細孔を埋めるので、ガスシールの機能を確保
できる。そして、多孔質骨格が溶融したガラスの保持体
として機能するので、その流出が抑制され、長時間の使
用に耐えられるようになる。Further, by using a green sheet-like bonding material made of a mixed material of glass and ceramic, the bonding layer does not protrude even when a load is applied, and the bonding layer can be formed at an arbitrary position even in a complex-shaped portion. The thickness can be set constant. In addition, since the ceramic serves as a porous skeleton, filling a relatively large gap in the joint portion, and further filling the pores with the glass-based material, the function of gas sealing can be ensured. Then, since the porous skeleton functions as a holder for the molten glass, the outflow is suppressed, and it becomes possible to endure long-term use.
【００１７】[0017]
【実施例】以下、本発明の実施例につき、図面を参照し
て説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１８】図１は本実施例のセルの分解斜視図を示
し、また、図２は図１における空気が供給される側から
見たセルの側面図を示している。FIG. 1 shows an exploded perspective view of the cell of this embodiment, and FIG. 2 shows a side view of the cell seen from the side to which air is supplied in FIG.
【００１９】（実施例１）まず、ガラス系材料からなる
薄板を固体電解質型燃料電池のガスシール部の接合に用
いる場合を説明する。(Example 1) First, a case where a thin plate made of a glass material is used for joining a gas seal portion of a solid oxide fuel cell will be described.
【００２０】粉末状のガラス系材料と適当量の結合材
（ポリビニルブチラール系バインダー）、溶剤（エタノ
ール、トルエン）を加えて混合し、スラリーとした。こ
のスラリー状の原料からドクターブレード法により、任
意の厚さのグリーンシートを得た。このシートを収縮率
を考慮した上で、図２に示す燃料極１または空気極３の
厚さと導電部の接合材９の厚さを加えた厚みになるよう
にして、図１に示すガスシール部７の形状に切り出し
た。そして、切り出したシートを、表面が平坦な耐火物
（ガラスと反応しないもの）を用いて挟み、高温加熱処
理（脱脂工程含む）して、薄板８を得た。なお、この熱
処理温度はガラス成分によって異なり、それぞれガラス
が溶融して耐火物と融着または固着しないような温度に
すればよい。このようにして得られた薄板ガラスの断面
をＳＥＭ観察したところ、ボイドのない緻密なガラスに
なっていることがわかった。A powdery glass material, an appropriate amount of a binder (polyvinyl butyral binder), and a solvent (ethanol, toluene) were added and mixed to form a slurry. A green sheet having an arbitrary thickness was obtained from this slurry-like raw material by the doctor blade method. Considering the shrinkage factor of this sheet, the thickness of the fuel electrode 1 or the air electrode 3 shown in FIG. 2 and the thickness of the bonding material 9 of the conductive part are added to obtain the gas seal shown in FIG. It was cut out in the shape of part 7. Then, the cut sheet was sandwiched between refractory materials having a flat surface (materials that do not react with glass) and subjected to a high temperature heat treatment (including a degreasing step) to obtain a thin plate 8. The heat treatment temperature varies depending on the glass component, and may be set to a temperature at which the glass does not melt and do not fuse or adhere to the refractory. SEM observation of the cross section of the thin glass thus obtained revealed that it was a dense glass without voids.
【００２１】そして、図１に示すように、このガラスの
薄板８の両面を、インターコネクタ５のガスシール部７
と、これに対向する発電部の端部に露出した固体電解質
膜２に、接着剤を塗布して接着した。これに適当な荷重
をかけ、１１００℃で焼き付けした。そして焼き付け
後、この断面をＳＥＭ観察したところ、ボイドのない均
一な厚さのガラスの接合層が形成されていることが確認
された。Then, as shown in FIG. 1, both sides of the glass thin plate 8 are connected to the gas seal portion 7 of the interconnector 5.
Then, an adhesive was applied and adhered to the solid electrolyte membrane 2 exposed at the end of the power generation section facing this. A suitable load was applied to this, and it baked at 1100 degreeC. Then, after baking, this cross section was observed by SEM, and it was confirmed that a glass bonding layer having a uniform thickness without voids was formed.
【００２２】（実施例２）次に、ガラスとセラミックの
混合材料からなるグリーンシートをガスシール部の接合
に用いる場合について、実施例１と同じく、図１，図２
をもとに説明する。(Embodiment 2) Next, in the case where a green sheet made of a mixed material of glass and ceramics is used for joining a gas seal portion, as in Embodiment 1, FIGS.
I will explain based on.
【００２３】粉末状のガラス系材料、及び熱膨張係数が
発電部４の各構成部材のそれと同等のセラミック材料を
適当量混合し、同じく適当量の結合材（ポリビニルブチ
ラール系バインダ）と溶剤（エタノール，トルエン）を
加えて混合し、スラリー（泥漿）とした。そして、この
スラリー状の原料から、ドクターブレード法により、任
意の厚さのグリーンシートを作製した。An appropriate amount of a powdery glass-based material and a ceramic material having a thermal expansion coefficient equivalent to that of each constituent member of the power generation section 4 are mixed, and an appropriate amount of a binder (polyvinyl butyral binder) and a solvent (ethanol) are mixed. , Toluene) were added and mixed to form a slurry (slurry). Then, a green sheet having an arbitrary thickness was produced from this slurry-like raw material by the doctor blade method.
【００２４】発電部４の端部から露出した固体電解質膜
２及びインターコネクタ５のガスシール部７の接合に
は、接合部の形状に合わせてこのグリーンシート８を切
り出し、この両面をガスシール部７と固体電解質膜２
に、溶剤を含まない接着剤を塗布して接着した。これに
適当な荷重をかけ、１１００℃で焼き付けした。そして
焼き付け後、この接合部の断面をＳＥＭ観察したとこ
ろ、均一な厚さのガラスとセラミックの接合層が形成さ
れていることが確認された。そして、ガラスのはみ出し
による発電部４やインターコネクタ５の汚染も見られな
かった。For joining the solid electrolyte membrane 2 exposed from the end of the power generation section 4 and the gas seal section 7 of the interconnector 5, the green sheet 8 is cut out in accordance with the shape of the joint section, and both sides of the green sheet 8 are cut into the gas seal section. 7 and solid electrolyte membrane 2
Then, an adhesive containing no solvent was applied to adhere. A suitable load was applied to this, and it baked at 1100 degreeC. Then, after baking, a cross section of this joint was observed by SEM, and it was confirmed that a glass-ceramic joint layer having a uniform thickness was formed. No contamination of the power generation section 4 or the interconnector 5 due to the glass protruding was observed.
【００２５】なお、実施例１、２において、ガラス系材
料にはシリカを主成分としたものを用いた。このような
ガラス系材料としては、燃料電池の発電部４を構成する
燃料極１、固体電解質膜２及び空気極３の各部材と反応
せず、発電部４とインターコネクタ５の熱膨張係数とほ
ぼ等しいもので、かつ、軟化点と作業温度の間で接合が
行われるようなものを採用すればよい。In Examples 1 and 2, a glass-based material containing silica as a main component was used. As such a glass-based material, it does not react with each member of the fuel electrode 1, the solid electrolyte membrane 2 and the air electrode 3 which constitute the power generation section 4 of the fuel cell, and has a thermal expansion coefficient of the power generation section 4 and the interconnector 5. It is sufficient to use those which are almost equal and which can be joined between the softening point and the working temperature.
【００２６】[0026]
【発明の効果】本発明によれば、ボイドのない接合層を
均一で任意な厚さに設定することができるため、接合時
の歩留まりを向上させることができる。そして、接合材
が薄板状やシート状であるため、接合部位の形状に切り
出して用いればよく、荷重をかけてもはみ出すことがな
い。従って、接合部が複雑な形状であっても、所定の部
位を接合することができ、設計上の自由度が広がる。ま
た、スラリー状の接合材ではないため、長時間の電池の
運転に際してもガラスが流失せず、ガスシールの機能を
損なうことがない。さらに、従来の接合工程の簡素化が
図れるという効果もある。また、薄板ガラスの製造方法
は、様々なガラスに応用することができるため、被接合
物の熱膨張係数及びその接合温度に合わせた薄板ガラス
を、簡便かつ安価に形成することができるものである。According to the present invention, since the void-free bonding layer can be set to a uniform and arbitrary thickness, the yield at the time of bonding can be improved. Since the bonding material is in the shape of a thin plate or sheet, the bonding material may be cut into the shape of the bonding portion and used, and does not protrude even when a load is applied. Therefore, even if the joining portion has a complicated shape, it is possible to join a predetermined portion, and the degree of freedom in design is widened. Further, since it is not a slurry-like bonding material, the glass does not flow away even when the battery is operated for a long time, and the function of the gas seal is not impaired. Further, there is an effect that the conventional joining process can be simplified. Further, since the method for producing thin glass can be applied to various glasses, it is possible to easily and inexpensively form thin glass that matches the thermal expansion coefficient of the article to be joined and its joining temperature. .
【図１】本発明の固体電解質型燃料電池のセルの分解斜
視図である。FIG. 1 is an exploded perspective view of a cell of a solid oxide fuel cell of the present invention.
【図２】本発明の固体電解質型燃料電池のセルの側面図
である。FIG. 2 is a side view of a cell of the solid oxide fuel cell of the present invention.
【図３】従来の固体電解質型燃料電池のセルの分解斜視
図である。FIG. 3 is an exploded perspective view of a cell of a conventional solid oxide fuel cell.
１ 燃料極 ２ 固体電解質膜 ３ 空気極 ４ 発電部 ５ インターコネクタ ６ 溝 ７ ガスシール部 ８ 薄板またはグリーンシート ９ 導電部の接合材 1 Fuel Electrode 2 Solid Electrolyte Membrane 3 Air Electrode 4 Power Generation Section 5 Interconnector 6 Groove 7 Gas Seal Section 8 Thin Plate or Green Sheet 9 Bonding Material for Conductive Section
Claims (3)
る発電部とインターコネクタの各端部の間に、ガラス系
材料からなる薄板を介在させ、前記薄板を加熱溶融し、
冷却して前記発電部と前記インターコネクタを接合する
ことを特徴とする固体電解質型燃料電池の製造方法。1. A thin plate made of a glass-based material is interposed between each end portion of an interconnector and a power generation unit composed of a fuel electrode, a solid electrolyte membrane and an air electrode, and the thin plate is heated and melted,
A method for manufacturing a solid oxide fuel cell, which comprises cooling and joining the power generation unit and the interconnector.
リーンシートを熱処理したものであることを特徴とする
請求項１記載の固体電解質型燃料電池の製造方法。2. The method for producing a solid oxide fuel cell according to claim 1, wherein the thin plate is obtained by heat-treating a green sheet containing powder of a glass-based material.
る発電部とインターコネクタの各端部の間に、ガラスと
セラミックの混合材料からなるグリーンシートを介在さ
せ、前記グリーンシートを加熱溶融し、冷却して前記発
電部と前記インターコネクタを接合することを特徴とす
る固体電解質型燃料電池の製造方法。3. A green sheet made of a mixed material of glass and ceramic is interposed between each end portion of an interconnector and a power generation section composed of a fuel electrode, a solid electrolyte membrane and an air electrode, and the green sheet is heated and melted. A method for manufacturing a solid oxide fuel cell, which comprises cooling and joining the power generation unit and the interconnector.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6312245A JPH08124591A (en) | 1994-08-29 | 1994-12-15 | Manufacture of solid electrolyte type fuel cell |
| US08/396,697 US5585203A (en) | 1994-03-03 | 1995-03-01 | Method of producing a solid oxide fuel cell |
| EP95102988A EP0675557A1 (en) | 1994-03-03 | 1995-03-02 | Method of producing a solid oxide fuel cell |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20377294 | 1994-08-29 | ||
| JP6-203772 | 1994-08-29 | ||
| JP6312245A JPH08124591A (en) | 1994-08-29 | 1994-12-15 | Manufacture of solid electrolyte type fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08124591A true JPH08124591A (en) | 1996-05-17 |
Family
ID=26514109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6312245A Pending JPH08124591A (en) | 1994-03-03 | 1994-12-15 | Manufacture of solid electrolyte type fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08124591A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007207749A (en) * | 2006-01-30 | 2007-08-16 | General Electric Co <Ge> | Method for producing solid oxide electrochemical device and solid oxide electrochemical device |
| JP2010086668A (en) * | 2008-09-29 | 2010-04-15 | Toshiba Fuel Cell Power Systems Corp | Fuel cell |
| JP2010262761A (en) * | 2009-04-30 | 2010-11-18 | Noritake Co Ltd | Solid oxide fuel cell and bonding material |
| 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 |
| JP2014026956A (en) * | 2012-07-24 | 2014-02-06 | Samsung Electro-Mechanics Co Ltd | Solid oxide fuel cell |
| CN109273266A (en) * | 2018-10-26 | 2019-01-25 | 浙江勇拓电气科技有限公司 | A kind of high pressure composite ceramics capacitor |
-
1994
- 1994-12-15 JP JP6312245A patent/JPH08124591A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007207749A (en) * | 2006-01-30 | 2007-08-16 | General Electric Co <Ge> | Method for producing solid oxide electrochemical device and solid oxide electrochemical device |
| 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 |
| JP2014056824A (en) * | 2008-03-26 | 2014-03-27 | Japan Fine Ceramics Center | Stack structure for stacked solid-oxide fuel cell, and stacked solid-oxide fuel cell and manufacturing method thereof |
| JP2010086668A (en) * | 2008-09-29 | 2010-04-15 | Toshiba Fuel Cell Power Systems Corp | Fuel cell |
| JP2010262761A (en) * | 2009-04-30 | 2010-11-18 | Noritake Co Ltd | Solid oxide fuel cell and bonding material |
| JP2014026956A (en) * | 2012-07-24 | 2014-02-06 | Samsung Electro-Mechanics Co Ltd | Solid oxide fuel cell |
| CN109273266A (en) * | 2018-10-26 | 2019-01-25 | 浙江勇拓电气科技有限公司 | A kind of high pressure composite ceramics capacitor |
| CN109273266B (en) * | 2018-10-26 | 2024-02-06 | 天力普电力科技有限公司 | High-voltage composite ceramic capacitor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6656625B1 (en) | Glass-ceramic coatings and sealing arrangements and their use in fuel cells | |
| JP3775436B2 (en) | Solid electrolyte fuel cell | |
| US8497047B2 (en) | Fuel cell stack | |
| GB2108311A (en) | Molten carbonate fuel cell integral matrix tape and bubble barrier | |
| US5134044A (en) | Glass-graphite bonding system for sodium-sulphur batteries and batteries made therefrom | |
| US5585203A (en) | Method of producing a solid oxide fuel cell | |
| JP2005183376A (en) | Fuel cell assembly | |
| CN102471135A (en) | Glass compositions for gaskets of devices operating at high temperatures and assembly methods using them | |
| JP6721158B2 (en) | Solid oxide fuel cell | |
| EP0503776B1 (en) | Glass sealing materials for sodium-sulfur batteries and batteries made therewith | |
| JP2006236980A (en) | Method for sealing a solid oxide fuel cell | |
| JPH08124591A (en) | Manufacture of solid electrolyte type fuel cell | |
| JP4305898B2 (en) | Electrochemical equipment | |
| JP3550231B2 (en) | Plate stack type solid oxide fuel cell and method of manufacturing the same | |
| JPH06349516A (en) | Solid oxide fuel cell stack | |
| JPH04342439A (en) | Sealing material for solid electrolytic type fuel cell and method for sealing | |
| JPH08134434A (en) | Sealant for high temperature and its production | |
| JPH0629034A (en) | Solid electrolyte fuel cell with mechanical seal structure | |
| JPH0652872A (en) | Sealing material for solid oxide fuel cell and sealing method | |
| US7785725B2 (en) | Compound for a solid oxide fuel cell stack gasket | |
| JPH0963628A (en) | Solid oxide fuel cell | |
| JPH07245119A (en) | Manufacture of solid electrolyte fuel cell | |
| JPH04190566A (en) | Seal binding agent composite for solid electrolyte fuel cell, seal binding using the same, and solid electrolyte fuel cell using the same method | |
| JPH0714591A (en) | Gas seal structure of solid electrolyte fuel cell | |
| JP5586848B2 (en) | Stable joint formed by thermal spraying |