JP3040645B2 - Dimple type solid electrolyte cell - Google Patents
Dimple type solid electrolyte cellInfo
- Publication number
- JP3040645B2 JP3040645B2 JP5283067A JP28306793A JP3040645B2 JP 3040645 B2 JP3040645 B2 JP 3040645B2 JP 5283067 A JP5283067 A JP 5283067A JP 28306793 A JP28306793 A JP 28306793A JP 3040645 B2 JP3040645 B2 JP 3040645B2
- Authority
- JP
- Japan
- Prior art keywords
- solid electrolyte
- power generation
- bonding material
- type solid
- interconnector
- 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.)
- Expired - Fee Related
Links
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)
Description
【０００１】[0001]
【産業上の利用分野】本発明は燃料と酸素を反応させて
発電を行う固体電解質型燃料電池や水蒸気に電気に加え
て水素と酸素に電気分解する水素製造装置として用いる
こともできる固体電解質セル、特にディンプル型固体電
解質セルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid electrolyte fuel cell which generates electricity by reacting fuel and oxygen, and a solid electrolyte cell which can be used as a hydrogen producing apparatus for electrolyzing hydrogen and oxygen in addition to electricity to steam. In particular, the present invention relates to a dimple-type solid electrolyte cell.
【０００２】[0002]
【従来の技術】本発明が適用される従来のディンプル型
と称される固体電解質燃料電池は発電層とインターコネ
クタを交互に積層して形成されている。すなわち、図２
に示すように、１は電池本体、２はインターコネクタ、
３は燃料極４と酸素極５及びガス通路を形成する凸部と
凹部（反対側が凸部を形成）を有する固体電解質６が積
層されている発電層である。2. Description of the Related Art A conventional dimple-type solid electrolyte fuel cell to which the present invention is applied is formed by alternately stacking power generation layers and interconnectors. That is, FIG.
As shown in the figure, 1 is a battery body, 2 is an interconnector,
Reference numeral 3 denotes a power generation layer on which a solid electrolyte 6 having a fuel electrode 4, an oxygen electrode 5, and a convex portion and a concave portion (the opposite side forms a convex portion) forming a gas passage is laminated.
【０００３】発電層３の燃料極４側には燃料ガス、酸素
極５側には空気が供給され発電層３にて電気を発生す
る。電気は発電層３とインターコネクタ２の接続部、す
なわち発電層３の凸部よりインターコネクタ２に流れて
いく。発電層３の凸部には電気接合材７が塗布されてお
り、インターコネクタ２と接続されている。電気を発生
するための反応温度は約１０００℃の高温である。Fuel gas is supplied to the fuel electrode 4 side of the power generation layer 3, and air is supplied to the oxygen electrode 5 side, and the power generation layer 3 generates electricity. Electricity flows to the interconnector 2 from the connection between the power generating layer 3 and the interconnector 2, that is, the convex portion of the power generating layer 3. An electric bonding material 7 is applied to the convex portion of the power generation layer 3, and is connected to the interconnector 2. The reaction temperature for generating electricity is as high as about 1000 ° C.
【０００４】[0004]
【発明が解決しようとする課題】従来のディンプル型固
体電解質セルの発電層３の凸部は約３ｍｍピッチで設け
られているため、その数は発電層３一枚当り数千本とな
る。そのため、その凸部一つ一つに電気接合材７を塗布
することは非常に困難である。また、凸部に塗布する電
気接合材７の量を均一にしなければ、電気の取り出しが
十分にできない。例えば、塗布する量が少なすぎる場合
は電気の流れる抵抗となる。また、塗布量が多すぎる
と、インターコネクタ２と発電層３の間にあるガス通路
を塞いでしまう恐れがある。Since the projections of the power generation layer 3 of the conventional dimple-type solid electrolyte cell are provided at a pitch of about 3 mm, the number of the projections is several thousands per one power generation layer 3. Therefore, it is very difficult to apply the electric bonding material 7 to each of the protrusions. Unless the amount of the electric bonding material 7 applied to the projections is made uniform, it is impossible to sufficiently extract electricity. For example, if the amount to be applied is too small, the resistance will be the flow of electricity. If the amount of application is too large, the gas passage between the interconnector 2 and the power generation layer 3 may be blocked.
【０００５】本発明は上記技術水準に鑑み、従来のディ
ンプル型固体電解質セルの特に製法上の不具合を解消し
うるディンプル型固体電解質セルを提供しようとするも
のである。The present invention has been made in view of the above-mentioned state of the art, and an object of the present invention is to provide a dimple-type solid electrolyte cell which can solve the problems of the conventional dimple-type solid electrolyte cell, particularly in the manufacturing method.
【０００６】[0006]
【課題を解決するための手段】本発明は燃料極、固体電
解質及び酸素極より構成された発電または電解層そのも
のがガス通路を形成するディンプル型固体電解質セルに
おいて、インターコネクタの両面に電気接合材を塗布
し、ペースト状態にある前記電気接合材の塗布面に発電
または電解層を積層することによって、インターコネク
タと前記発電または電解層とを電気的接続させてなるこ
とを特徴とするディンプル型固体電解質セルである。The present invention is a fuel electrode SUMMARY OF THE INVENTION The solid electrolyte and the generator or electrolytic layer itself is composed of the oxygen electrode in the dimple-type solid electrolyte cells forming gas passage, electrical bonding material on both sides of the interconnector Apply
Power generation on the coated surface of the electrical bonding material in paste state.
Alternatively, there is provided a dimple-type solid electrolyte cell characterized in that an interconnector is electrically connected to the power generation or electrolytic layer by laminating electrolytic layers .
【０００７】すなわち、本発明のディンプル型固体電解
質セルは電気接合材を発電層の凸部に塗布するのではな
く、インターコネクタの表面に電気接合材をスクリーン
印刷法により塗布し、その塗布面に発電層を積層してな
るものである。これにより発電層の凸部は電気接合材に
めり込む状態でインターコネクタと電気的に接続され
る。本発明のディンプル型固体電解質セルはスクリーン
印刷法により、電気接合材がインターコネクタに均一に
塗布することができるので、従来法におけるような問題
点は解決される。また、電気接合材は使用条件下で電気
抵抗の少ない材料で、ペースト状態であるので発電膜の
凸部は容易に電気接合材中にめり込み電気的接続が完全
になされる。That is, the dimple-type solid electrolyte cell of the present invention does not apply the electric bonding material to the projections of the power generation layer, but applies the electric bonding material to the surface of the interconnector by a screen printing method and applies the electric bonding material to the application surface. It is formed by stacking power generation layers. As a result, the projections of the power generation layer are electrically connected to the interconnector while being sunk into the electrical bonding material. In the dimple-type solid electrolyte cell of the present invention, the electric bonding material can be uniformly applied to the interconnector by a screen printing method. Further, since the electric bonding material is a material having a low electric resistance under use conditions and is in a paste state, the projections of the power generation film are easily sunk into the electric bonding material to make an electrical connection completely.
【０００８】[0008]
【作用】インターコネクタの表面に電気接合材を塗布
し、発電層と交互に積層して電池本体を組み立てる。電
池本体が反応温度の１０００℃になると、電気接合材は
焼結し強固に発電膜とインターコネクタを接続する。ま
た、電池本体を反応温度の１０００℃以上の温度（１１
００〜１３００℃）で予め焼成しておくことも可能であ
る。The electric bonding material is applied to the surface of the interconnector and alternately laminated with the power generation layer to assemble the battery body. When the temperature of the battery body reaches a reaction temperature of 1000 ° C., the electric bonding material is sintered and firmly connects the power generation film and the interconnector. In addition, the battery body was heated to a temperature of 1000 ° C. or higher (11 ° C.).
(10000 to 1300 ° C.) in advance.
【０００９】発電層の凸部がめり込むことにより、電気
接合材との接触が点から面になり、接続抵抗が少なくな
るとともに、面接触による接続強度も向上し電池の電気
的接続に対する信頼性が向上する。[0009] When the protruding portion of the power generation layer sinks, the contact with the electric bonding material is changed from a point to a surface, so that the connection resistance is reduced and the connection strength by the surface contact is improved, so that the reliability of the electric connection of the battery is improved. improves.
【００１０】[0010]
【実施例】本発明のディンプル型固体電解質燃料電池の
セルの一実施例を図１によって説明する。インターコネ
クタ２の表面に電気接合材７が塗布されており、発電層
３の凸部が電気接合材７にめり込んだように接続されて
いる。発電層３の固体電解質６にはＹＳＺ（イットリア
安定化ジルコニア）が用いられ、インターコネクタ２に
は同ＹＳＺと熱膨張差がほゞ等しく、かつ還元及び酸化
の両雰囲気に耐える材料が選択される。その代表例とし
てはＬａＳｒＣｒＯ3 やＹ1-x Ｃａx ＣｒＯ3 などの材
料があげられる。電気接合材７は固体電解質６に積層さ
れている燃料極４及び酸素極５と同じ材料をベースに作
られている。すなわち、燃料極４側の電気接合材７はＮ
ｉＯまたはＮｉが主として用いられ、酸素極５側の電気
接合材７はＬａＳｒＭｎＯ3 を主として用いる。これら
の電気接合材７には、それぞれの粉末に溶剤及びバイン
ダー等を加えペースト状態に混練された物を適用し、ス
クリーン印刷法にてインターコネクタ２表面に厚み３０
０μｍ程度以下に塗布する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cell of a dimple type solid electrolyte fuel cell according to the present invention will be described with reference to FIG. The electric bonding material 7 is applied to the surface of the interconnector 2, and the electric power generation layer 3 is connected such that the convex portion of the power generation layer 3 is embedded in the electric bonding material 7. YSZ (yttria-stabilized zirconia) is used for the solid electrolyte 6 of the power generation layer 3, and a material that has a thermal expansion difference substantially equal to that of the YSZ and that can withstand both reducing and oxidizing atmospheres is selected for the interconnector 2. . Typical examples thereof include materials such as LaSrCrO 3 and Y 1-x Ca x CrO 3 . The electric bonding material 7 is made based on the same material as the fuel electrode 4 and the oxygen electrode 5 laminated on the solid electrolyte 6. That is, the electric bonding material 7 on the fuel electrode 4 side is N
iO or Ni is mainly used, and LaSrMnO 3 is mainly used for the electric bonding material 7 on the oxygen electrode 5 side. A material obtained by adding a solvent, a binder, and the like to each powder and kneading it in a paste state is applied to the electric bonding material 7, and a thickness of 30 mm is applied to the surface of the interconnector 2 by screen printing.
It is applied to a thickness of about 0 μm or less.
【００１１】このペースト状の電気接合材７を塗布した
インターコネクタ２に予め焼結されている発電層３を積
層すると発電層の凸部は電気接合材７にめり込んだ状態
で積層されることとなる。このように発電層３の凸部が
電気接合材７にめり込み、面接触させた状態で電池本体
を反応温度の１０００℃以上にすることで、電気接合材
７は焼結し凸部との接続強度が向上し、電気的接続の信
頼性が向上する。When the power generation layer 3 which has been sintered in advance is laminated on the interconnector 2 coated with the paste-like electric bonding material 7, the projections of the power generation layer are laminated with the electric bonding material 7 embedded therein. Become. As described above, the projecting portion of the power generation layer 3 is sunk into the electric bonding material 7, and the battery body is heated to a reaction temperature of 1000 ° C. or more in a state of surface contact, whereby the electric bonding material 7 is sintered and connected to the projecting portion. The strength is improved, and the reliability of the electrical connection is improved.
【００１２】[0012]
【発明の効果】スクリーン印刷法にて電気接合材をイン
ターコネクタ表面に塗布することにより、発電層の凸部
一つ一つに塗布する必要がなくなり、比較的薄く、か
つ、非常に早く均一に発電層とインターコネクタを接続
することができるため、作業時間の短縮が可能になる。
電気接合材を介して発電層とインターコネクタが面接続
となるため、電気抵抗が減少するとともに、電気接合材
の焼結により両者の接続強度が向上し、信頼性が向上す
る。By applying the electric bonding material to the surface of the interconnector by the screen printing method, it is not necessary to apply the electric bonding material to each of the protrusions of the power generation layer, and it is relatively thin and very quickly and uniformly. Since the power generation layer and the interconnector can be connected, the working time can be reduced.
Since the power generation layer and the interconnector are surface-connected via the electric bonding material, the electric resistance is reduced, and the sintering of the electric bonding material improves the connection strength between the two, thereby improving the reliability.
【図１】本発明のディンプル型固体電解質燃料電池セル
の一実施例の断面の模式図。FIG. 1 is a schematic cross-sectional view of one embodiment of a dimple-type solid oxide fuel cell according to the present invention.
【図２】従来のディンプル型固体電解質燃料電池セルの
一態様の断面の模式図。FIG. 2 is a schematic cross-sectional view of one embodiment of a conventional dimple-type solid electrolyte fuel cell.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−304873（ＪＰ，Ａ) 実開 平４−8259（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 8/00 - 8/24 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-304873 (JP, A) JP-A-4-8259 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) H01M 8/00-8/24
Claims (1)
された発電または電解層そのものがガス通路を形成する
ディンプル型固体電解質セルにおいて、インターコネク
タの両面に電気接合材を塗布し、ペースト状態にある前
記電気接合材の塗布面に発電または電解層を積層するこ
とによって、インターコネクタと前記発電または電解層
とを電気的接続させてなることを特徴とするディンプル
型固体電解質セル。1. A fuel electrode, a solid electrolyte and a generator or electrolytic layer itself is composed of the oxygen electrode in the dimple-type solid electrolyte cells forming gas passage, interconnect
Before applying paste to both sides of the
Lay the power generation or electrolytic layer on the surface of the electrical bonding material
Wherein the interconnector is electrically connected to the power generation or electrolytic layer, thereby providing a dimple-type solid electrolyte cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5283067A JP3040645B2 (en) | 1993-11-12 | 1993-11-12 | Dimple type solid electrolyte cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5283067A JP3040645B2 (en) | 1993-11-12 | 1993-11-12 | Dimple type solid electrolyte cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07135000A JPH07135000A (en) | 1995-05-23 |
| JP3040645B2 true JP3040645B2 (en) | 2000-05-15 |
Family
ID=17660782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5283067A Expired - Fee Related JP3040645B2 (en) | 1993-11-12 | 1993-11-12 | Dimple type solid electrolyte cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3040645B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2408538C (en) * | 2000-05-08 | 2008-05-20 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell assembly with heater wire provided on a grid frame of an electrolyte layer |
| EP1429405A1 (en) * | 2001-09-19 | 2004-06-16 | Mitsubishi Heavy Industries, Ltd. | Fuel cell device and method of cooling fuel cell |
| JP4940536B2 (en) * | 2004-02-26 | 2012-05-30 | トヨタ自動車株式会社 | Fuel cell |
| JP2008078033A (en) * | 2006-09-22 | 2008-04-03 | Central Res Inst Of Electric Power Ind | Solid oxide fuel cell |
-
1993
- 1993-11-12 JP JP5283067A patent/JP3040645B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07135000A (en) | 1995-05-23 |
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