JP2003303602A - High temperature solid oxide fuel cell - Google Patents
High temperature solid oxide fuel cellInfo
- Publication number
- JP2003303602A JP2003303602A JP2002108680A JP2002108680A JP2003303602A JP 2003303602 A JP2003303602 A JP 2003303602A JP 2002108680 A JP2002108680 A JP 2002108680A JP 2002108680 A JP2002108680 A JP 2002108680A JP 2003303602 A JP2003303602 A JP 2003303602A
- Authority
- JP
- Japan
- Prior art keywords
- solid oxide
- temperature solid
- oxide fuel
- fuel cell
- 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
-
- 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
(57)【要約】
【課題】電解質チューブの薄肉化を達成するとともに、
信頼性の高い高温固体酸化物形燃料電池を提供すること
にある。
【解決手段】本発明の高温固体酸化物形燃料電池は、燃
料側電極及び空気側電極とを有する円筒状の電池構成部
と、円筒軸方向で該電池構成部の一方の端部に連結され
る円筒状のセラミックス部とを備え、該セラミック部に
支持部材に取り付けるための取付部を設け、且つ、前記
燃料側電極及び空気側電極からの電流の取り出し部を円
筒軸方向でセラミックス部側に設けることを特徴とす
る。
【効果】高温固体酸化物形燃料電池の信頼性向上が図れ
る。
(57) [Abstract] [Problem] To achieve a thin electrolyte tube,
It is to provide a high-temperature solid oxide fuel cell with high reliability. A high-temperature solid oxide fuel cell according to the present invention includes a cylindrical cell component having a fuel-side electrode and an air-side electrode, and is connected to one end of the cell component in a cylindrical axis direction. And a mounting part for mounting to a support member is provided on the ceramic part, and a part for taking out current from the fuel-side electrode and the air-side electrode is provided on the ceramic part side in the cylindrical axis direction. It is characterized by being provided. [Effect] The reliability of a high-temperature solid oxide fuel cell can be improved.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高温固体酸化物形
燃料電池に関する。TECHNICAL FIELD The present invention relates to a high temperature solid oxide fuel cell.
【０００２】[0002]
【従来の技術】従来の電解質チューブ支持形の燃料電池
では、電解質チューブが電池の強度部材となっているた
め、ある程度の厚さが必要とされ、電池性能面からみる
と内部抵抗率の大きな電解質を厚くせざるを得ないた
め、電池性能を犠牲にしている。円筒型固体燃料電池と
して例えば特開平１０−１２５３４６号等があげられ
る。また、インターコネクトレス方式のセル単体での交
換が可能な電池構造では、各セルごとに正負両極からの
電流取り出し線を設けなければならず、特に、外表面か
らの取り出し部は燃料、あるいは空気供給用ヘッダー部
のシールが必要となる。2. Description of the Related Art A conventional electrolyte tube-supporting fuel cell requires a certain amount of thickness because the electrolyte tube is a strength member of the cell. The battery performance is sacrificed because it has to be thicker. Examples of the cylindrical solid fuel cell include JP-A-10-125346. In addition, in a battery structure that can be replaced with a single cell of the interconnectless system, it is necessary to provide a current extraction line from both positive and negative electrodes for each cell, and especially the extraction part from the outer surface is supplied with fuel or air. It is necessary to seal the header part for use.
【０００３】[0003]
【発明が解決しようとする課題】高温固体酸化物形燃料
電池は、現状、８００℃以上で作動することから、電池
構成部は高温での使用となり、性能面，熱応力などの強
度面からも薄肉化が望まれているが、同時にセル全体の
支持部材として機能する場合にはセル全体を固定板など
に取り付け、流体のシールと同時にセルの固定を行わな
ければ成らず、電池構成部を薄肉化した場合には、この
固定部での強度が不足し、十分な信頼性を確保すること
ができなくなる。Since the high-temperature solid oxide fuel cell currently operates at 800 ° C. or higher, the cell components are used at high temperatures, and the performance and strength such as thermal stress are also high. Although it is desired to reduce the thickness of the battery, if it simultaneously functions as a support member for the entire cell, the entire cell must be attached to a fixing plate, etc., and the cell must be fixed at the same time as the fluid is sealed. If it is made to have sufficient strength, the strength of the fixing portion becomes insufficient, and it becomes impossible to secure sufficient reliability.
【０００４】常にセル単体へ大きな圧縮応力が作用する
インターコネクト方式では実現することのできない電解
質チューブの薄肉化を達成すると同時に、薄肉電池構成
部を電池モジュール構成に必要なセル固定板に取り付け
るために、電池構成部よりは厚肉で、その内部に電池構
成部からの電流取り出し構造を有し、外部へ電流を取り
出すことが可能なセラミックス筒部を電池構成部の一端
に設置することで、単独でのセル交換が可能な、急速起
動，停止時にも応力の発生が小さく、高性能でモジュー
ル構造としたときにも信頼性の高い高温固体酸化物形燃
料電池が望まれる。In order to achieve the thinning of the electrolyte tube which cannot be realized by the interconnect system in which a large compressive stress always acts on the cell unit, and at the same time, the thin battery component is attached to the cell fixing plate required for the battery module configuration, It is thicker than the battery constituent part, has a structure for extracting current from the battery constituent part inside, and by installing a ceramic cylinder part capable of extracting electric current to the outside at one end of the battery constituent part, A high-temperature solid oxide fuel cell capable of cell replacement, capable of generating less stress during rapid start and stop, having high performance, and having high reliability even in a module structure is desired.
【０００５】本発明の目的は、電解質チューブの薄肉化
を達成するとともに、信頼性の高い高温固体酸化物形燃
料電池を提供することにある。An object of the present invention is to provide a high temperature solid oxide fuel cell which achieves thinning of the electrolyte tube and is highly reliable.
【０００６】[0006]
【課題を解決するための手段】本発明の高温固体酸化物
形燃料電池は、燃料側電極及び空気側電極とを有する円
筒状の電池構成部と、円筒軸方向で該電池構成部の一方
の端部に連結される円筒状のセラミックス部とを備え、
該セラミック部に支持部材に取り付けるための取付部を
設け、且つ、前記燃料側電極及び空気側電極からの電流
の取り出し部を円筒軸方向でセラミックス部側に設ける
ことを特徴とする。A high temperature solid oxide fuel cell of the present invention comprises a cylindrical cell component having a fuel side electrode and an air side electrode, and one of the cell component in the axial direction of the cylinder. And a cylindrical ceramic portion connected to the end,
The ceramic part is provided with a mounting part for mounting to a support member, and a part for taking out an electric current from the fuel side electrode and the air side electrode is provided on the ceramic part side in the cylindrical axis direction.
【０００７】[0007]
【発明の実施の形態】燃料側電極及び空気側電極とを有
する円筒状の電池構成部と、円筒軸方向で該電池構成部
の一方の端部に連結される円筒状のセラミックス部とを
備え、該セラミック部に支持部材に取り付けるための取
付部を設け、且つ、前記燃料側電極及び空気側電極から
の電流の取り出し部を円筒軸方向でセラミックス部側に
設けることで、高温固体酸化物形燃料電池の信頼性を向
上できる。或いは、円筒状の高温固体酸化物形燃料電池
用セルを軸方向で分割し、一方を、燃料側電極及び空気
側電極とを有する円筒状の電池構成部とし、他方を、支
持部材に取り付けるための取付部を有する円筒状のセラ
ミックス部とし、前記燃料側電極及び空気側電極からの
電流の取り出し部を円筒軸方向でセラミックス部側に設
けることで、高温固体酸化物形燃料電池の信頼性を向上
できる。BEST MODE FOR CARRYING OUT THE INVENTION A cylindrical cell part having a fuel side electrode and an air side electrode, and a cylindrical ceramic part connected to one end of the cell part in the axial direction of the cylinder. By providing the ceramic part with a mounting part for mounting to a support member, and providing a part for taking out the current from the fuel side electrode and the air side electrode on the ceramic part side in the cylindrical axis direction, a high temperature solid oxide type The reliability of the fuel cell can be improved. Alternatively, to divide a cylindrical high-temperature solid oxide fuel cell cell in the axial direction, one of which is a cylindrical cell component having a fuel-side electrode and an air-side electrode, and the other of which is attached to a supporting member. The reliability of the high-temperature solid oxide fuel cell is improved by providing a cylindrical ceramic part having a mounting part of (3) and providing a part for taking out the current from the fuel side electrode and the air side electrode on the ceramic part side in the cylinder axial direction. Can be improved.
【０００８】また、本発明の実施形態では、薄肉円筒形
状単セルの電池構成部の一端を電池構成部よりは厚肉な
セラミックス筒内へ挿入し、このセラミックス筒内の電
流取り出しリード線へ電解質両面の電極からの電流を流
すように接続し、セラミックス筒部で単セルを支持し、
同時に燃料、あるいは空気ヘッダー部とのシール部とす
ることで、外部からの力による応力発生のない、単セル
での交換が可能な、急速起動，停止の可能な高性能で信
頼性の高い高温固体酸化物形燃料電池を提供することが
できる。Further, in the embodiment of the present invention, one end of the battery constituent part of the thin-walled cylindrical single cell is inserted into a ceramic cylinder thicker than the battery constituent part, and the electrolyte is connected to the current extraction lead wire in the ceramic cylinder. Connected so that the current from the electrodes on both sides will flow, the ceramic cylinder supports the single cell,
At the same time, by using a seal part with the fuel or air header part, there is no stress due to external force, it can be replaced in a single cell, it can be started and stopped quickly, and it has high performance and high reliability. A solid oxide fuel cell can be provided.
【０００９】本発明の実施の形態を、図１を用いて説明
する。図１は本発明の実施の形態による高温固体酸化物
形燃料電池の単セル基本構造の断面図を示したものであ
る。An embodiment of the present invention will be described with reference to FIG. FIG. 1 is a sectional view showing a basic structure of a single cell of a high temperature solid oxide fuel cell according to an embodiment of the present invention.
【００１０】図１に示すように、単セルは円筒形状をな
している。電池構成部１は、主に、電解質チューブ５，
燃料極側電極２０，空気極側電極１０を備えている。電
解質チューブ５は、円筒形状で、本実施例では部分安定
化ジルコニアＹＳＺを材料としている。燃料極側電極２
０は、電解質チューブ５の内周面に、円筒状に形成さ
れ、ニッケルを材料ベースとしている。空気極側電極１
０は、電解質チューブ５の外周面に、円筒状に形成さ
れ、Ｌａ／Ｓｒ／ＭｎＯ3 系などの材料が用いられる。
このような構成により、電解質との間に界面を形成して
いる。As shown in FIG. 1, the unit cell has a cylindrical shape. The battery component 1 is mainly composed of the electrolyte tube 5,
The fuel electrode side electrode 20 and the air electrode side electrode 10 are provided. The electrolyte tube 5 has a cylindrical shape, and is made of partially stabilized zirconia YSZ in this embodiment. Fuel electrode 2
No. 0 is formed in a cylindrical shape on the inner peripheral surface of the electrolyte tube 5 and has nickel as a material base. Air electrode side electrode 1
0 is formed in a cylindrical shape on the outer peripheral surface of the electrolyte tube 5, and a material such as La / Sr / MnO 3 system is used.
With such a structure, an interface is formed with the electrolyte.
【００１１】電池構成部１において、電解質チューブ
５，燃料極側電極２０および空気極側電極１０で構成さ
れる電気化学反応場で発生した電流は、それぞれの燃料
極側電極２０および空気極側電極１０に接続された電流
取り出し部１１及び電流取り出し部２１から外部へ取り
出すことができる。In the cell component 1, the electric current generated in the electrochemical reaction field constituted by the electrolyte tube 5, the fuel electrode side electrode 20 and the air electrode side electrode 10 is generated by the respective fuel electrode side electrode 20 and air electrode side electrode. The electric current can be taken out from the electric current take-out unit 11 and the electric current take-out unit 21 connected to 10.
【００１２】これらの電流取り出し部１１及び電流取り
出し部２１は、夫々接続部１２及び接続部２２で燃料極
側電極２０および空気極側電極１０に接続され、電極内
の電荷を電流取り出し部１１及び電流取り出し部２１へ
移動させることになる。そして、これらの電流取り出し
部１１及び電流取り出し部２１は、銀線，Ｎｉ−Ｃｒ
線，Ｎｉ線あるいはNimonic線などの線と電極表面との
接合によって形成することができる。また、これらの電
流取り出し部１１及び電流取り出し部２１は、これら素
材のメッキ，溶射，蒸着、あるいはインターコネクトレ
ス方式で集電材料として使用されるＬａＣｒＯ3 系など
の材料を電極表面に接触させることによって形成するこ
とができる。The current take-out portion 11 and the current take-out portion 21 are connected to the fuel electrode side electrode 20 and the air electrode side electrode 10 at the connecting portion 12 and the connecting portion 22, respectively, and charge in the electrodes is taken out by the current taking-out portion 11 and the electric current taking-out portion 11. It will be moved to the current extracting portion 21. The current extracting portion 11 and the current extracting portion 21 are made of silver wire, Ni--Cr.
It can be formed by joining a wire such as a wire, a Ni wire, or a Nimonic wire and the electrode surface. In addition, the current extracting portion 11 and the current extracting portion 21 are formed by plating, spraying, vapor depositing these materials, or bringing a material such as LaCrO 3 system, which is used as a current collecting material in an interconnectless system, into contact with the electrode surface. Can be formed.
【００１３】次に、本実施例におけるセラミックス筒４
０について説明する。このセラミックス筒４０は、セラ
ミックス材料で円筒形状をなしている。そして、電池構
成部１の一端をセラミックス筒４０内に挿入し接合して
いる。セラミックス筒４０の挿入端部と電池構成部１表
面とをセラミックス接着剤などで接合することで、電池
内部を流れる燃料、あるいは空気が電池外へ漏れること
を防止できる。また、本実施例では空気極側電極１０は
円筒軸方向の電解質チューブ５端部には設けていない。
つまり、円筒軸方向で電解質チューブ５が空気極側電極
１０より端部において突出している。セラミックス筒４
０をこの電解質チューブ５の端部に挿入し接合すること
で、容易に挿入接合が可能となる。電解質チューブ５の
外周面とセラミックス筒４０の内周面が係合するよう構
成することが望ましい。つまり、セラミックス筒４０の
内周に挿入及び接合しやすいように、電解質チューブ５
の外周を設定することが望ましい。Next, the ceramic cylinder 4 in this embodiment
0 will be described. The ceramic cylinder 40 is made of a ceramic material and has a cylindrical shape. Then, one end of the battery constituent part 1 is inserted into and bonded to the ceramic cylinder 40. By joining the insertion end of the ceramic tube 40 and the surface of the battery component 1 with a ceramic adhesive or the like, it is possible to prevent fuel or air flowing inside the battery from leaking to the outside of the battery. In addition, in the present embodiment, the air electrode side electrode 10 is not provided at the end of the electrolyte tube 5 in the cylindrical axis direction.
That is, the electrolyte tube 5 projects from the air electrode side electrode 10 at the end portion in the cylindrical axis direction. Ceramics cylinder 4
Inserting and joining 0 into the end of the electrolyte tube 5 enables easy insertion and joining. It is desirable that the outer peripheral surface of the electrolyte tube 5 and the inner peripheral surface of the ceramic cylinder 40 be engaged with each other. That is, the electrolyte tube 5 can be easily inserted and joined to the inner circumference of the ceramic tube 40.
It is desirable to set the outer circumference of.
【００１４】また、電流取り出し部１１は、接続部１２
で円筒状部材の外面である空気極側電極１０に接続さ
れ、セラミックス筒４０側に延在する。電流取り出し部
２１は、接続部２２で円筒状部材の内面である燃料極側
電極２０に接続され、セラミックス筒４０側に延在す
る。従って、円筒状部材の軸方向で同一側に、電流取り
出し部１１及び電流取り出し部２１双方を簡易に設置可
能な構造となり、配線が容易である。Further, the electric current take-out section 11 has a connecting section 12
Is connected to the air electrode side electrode 10, which is the outer surface of the cylindrical member, and extends to the ceramic cylinder 40 side. The current extracting portion 21 is connected to the fuel electrode side electrode 20 which is the inner surface of the cylindrical member at the connecting portion 22 and extends to the ceramic cylinder 40 side. Therefore, both the current extracting portion 11 and the current extracting portion 21 can be easily installed on the same side in the axial direction of the cylindrical member, and wiring is easy.
【００１５】なお、このセラミックス筒４０には、電池
支持板への取付部を設けることが望ましい。本実施例で
は、つば部４１がセラミックス筒４０の外周側に設けら
れている。このつば部に変わり、本図には記載されてい
ないが、支持板への取り付けをセラミックス筒表面に設
けたねじ部とすることも可能である。また、本実施例の
ようなつば部４１を設けた際には、つば部４１とセラミ
ックス筒４０との間に電流取り出し部１１を通すことで
配線と電池支持板への取付部との干渉を避けている。It should be noted that it is desirable that the ceramic cylinder 40 be provided with a mounting portion to a battery support plate. In this embodiment, the brim portion 41 is provided on the outer peripheral side of the ceramic cylinder 40. Although not shown in the figure, the collar may be replaced by a threaded portion provided on the surface of the ceramic cylinder for attachment to the support plate. Further, when the collar portion 41 as in the present embodiment is provided, the current extracting portion 11 is passed between the collar portion 41 and the ceramic cylinder 40 to prevent the wiring from interfering with the mounting portion to the battery support plate. I'm avoiding it.
【００１６】前述のような構造とすることで、円筒状の
高温固体酸化物形燃料電池用セルを軸方向で分割し、一
方を、燃料側電極及び空気側電極とを有する円筒状の電
池構成部とし、他方を、支持部材に取り付けるための取
付部を有する円筒状のセラミックス部とし、電解質チュ
ーブとは無関係に、取付部の強度を高めることができ、
電池構成部の電解質チューブを薄肉化することが可能と
なる。また、前記燃料側電極及び空気側電極からの電流
の取り出し部を円筒軸方向でセラミックス部側に設ける
ことで分割構造としても、電流を容易に取り出すことが
できる。そして、高性能で、且つ単セルとしては強度的
にも高信頼性を確保することができる。さらに、単セル
の交換が容易である。モジュールを構成するセルのうち
で、１本のセルが大幅に性能低下した場合、性能低下し
たセルのみを交換することができ、モジュール全体を交
換する場合に比べ、保守費用を安いものにすることがで
きる。With the above-described structure, the cylindrical high temperature solid oxide fuel cell unit is divided in the axial direction, and one of them has a fuel side electrode and an air side electrode. Part, and the other part is a cylindrical ceramic part having a mounting part for mounting to the supporting member, and the strength of the mounting part can be increased regardless of the electrolyte tube,
It is possible to reduce the thickness of the electrolyte tube of the battery constituent part. Further, the current can be easily taken out even if the divided structure is provided by providing the electric current taking-out part from the fuel side electrode and the air side electrode on the ceramic part side in the cylindrical axis direction. Further, it is possible to secure high performance and high reliability in terms of strength as a single cell. Further, it is easy to replace the single cell. When the performance of one of the cells that make up the module is significantly degraded, only the degraded cell can be replaced, and maintenance costs are lower than when replacing the entire module. You can
【００１７】図２は、図１に示す基本構造で、電池構成
部１からセラミックス筒部４０への電流の取り出しかた
を、セラミックス筒４０内に設けた電気良導体のバネに
電池構成部１の電流取り出し部１１、又は、電極表面を
接触させることで可能としている。FIG. 2 shows the basic structure shown in FIG. 1 in which the electric current is taken out from the battery constituent part 1 to the ceramic cylinder 40 by means of a spring of a good electric conductor provided in the ceramic cylinder 40. This is possible by bringing the current extraction part 11 or the electrode surface into contact.
【００１８】この構造では、電池構成部１をセラミック
ス筒４０内のバネ部に差し込むことで電流取り出しリー
ド線が接続することになる。バネには外部への電流取り
出しリード線が接続されており、このリード線を電池外
部で結線することで直列、あるいは並列でのセルモジュ
ール構成が可能となる。In this structure, the current take-out lead wire is connected by inserting the battery component 1 into the spring portion in the ceramic cylinder 40. An external current lead wire is connected to the spring, and by connecting this lead wire outside the battery, it is possible to configure a cell module in series or in parallel.
【００１９】図３は、図１の単セル構造において、セラ
ミックス筒内へ挿入する電池構成部の端部を一部カット
し、内面の電極部に直接リード線である電流取り出し部
２１を取り付けやすくした構造を示す。このようにする
ことで電解質チューブ５の内面側電極、ここでは燃料極
側電極２０への電極接続部１２と電極との接続部におけ
る接合作業がしやすくなると同時に、接合状態を確実な
もの、あるいはその状態を確認することができ、接触抵
抗などによる性能低下を防止することができる。FIG. 3 shows that in the single cell structure of FIG. 1, a part of an end of a battery constituent part to be inserted into a ceramic cylinder is partially cut, and a current take-out part 21 which is a lead wire can be directly attached to an electrode part on the inner surface. The structure is shown. This makes it easier to join the inner surface side electrode of the electrolyte tube 5, here, the connecting portion between the electrode connecting portion 12 and the electrode to the fuel electrode side electrode 20, and at the same time, secures the joined state, or The state can be confirmed, and performance deterioration due to contact resistance and the like can be prevented.
【００２０】図４は図１の単セル構造において、電池構
成部のセラミックス筒内のリード線が接合される電極部
を２層構造としている。電極材料は性能向上と長寿命化
を図るため、燃料極側電極２０，空気極側電極１０のい
ずれにも電解質チューブ５の構成材料である部分安定化
ジルコニア（ＹＳＺ）粉末が混入されている。そのた
め、ＮｉあるいはＬａ／Ｓｒ／ＭｎＯ3 単独であれば、
金属質の表面が得られるが、ＹＳＺ粉末の混入により特
性がセラミックス化し、金属質の電流取り出しリード線
との接合が難しくなる。電極を２層構造とし、各電極の
表面をＹＳＺ粉末を含まない金属質の電極１８，２８と
することで、上記のような接合の問題点が解消でき、従
来からの金属接合に使用されているロー付け技術などが
適用可能となる。FIG. 4 shows the single cell structure of FIG. 1 in which the electrode portion to which the lead wire in the ceramic cylinder of the battery constituent portion is joined has a two-layer structure. In order to improve the performance and extend the life of the electrode material, partially stabilized zirconia (YSZ) powder, which is a constituent material of the electrolyte tube 5, is mixed in both the fuel electrode side electrode 20 and the air electrode side electrode 10. Therefore, if Ni or La / Sr / MnO 3 is used alone,
Although a metallic surface is obtained, the characteristics become ceramic due to the incorporation of YSZ powder, which makes it difficult to join the metallic current extraction lead wire. By forming the electrodes into a two-layer structure and forming the surface of each electrode with metallic electrodes 18 and 28 containing no YSZ powder, the above-mentioned problems of joining can be solved, and it is used for conventional metal joining. It is possible to apply existing brazing technology.
【００２１】図５は、図４に示す単セル構造において、
電池構成部の２層電極部の表面側電極を無電解メッキな
どによる金属層１９，２９としたものであり、図４と同
様にセラミックス筒内の電流取り出しリード線との接合
が容易となる。FIG. 5 shows the single cell structure shown in FIG.
The surface-side electrodes of the two-layer electrode portion of the battery constituent portion are metal layers 19 and 29 formed by electroless plating or the like, and like the case of FIG. 4, they can be easily joined to the current extraction lead wires in the ceramic cylinder.
【００２２】図６（ａ）及び図６（ｂ）は、図１に示す
単セル構造において、電池構成部の電流取り出しリード
線を電解質チューブ５の表面に設けた軸方向にのびる凹
み部６，７に取り付けるようにしたものである。図６
（ａ）は、凹み部付き電解質チューブ面に電流取り出し
線を設置した高温固体酸化物形燃料電池断面図（縦断面
図）を示し、図６（ｂ）は、図６（ａ）の高温固体酸化
物形燃料電池のＡ−Ａ断面図（横断面図）を示す。この
凹み部があることにより、電流取り出し部１６，２１を
電極表面にロー材などで接合する際、ロー材が溶融した
場合にそのロー材が接合部以外に流れでないようにする
ことができ、接合を確実なものとすることと同時に、不
必要な部分にロー材が流れ出ることで電池の性能低下を
防止することもできる。6 (a) and 6 (b), in the single cell structure shown in FIG. 1, a recess 6 extending in the axial direction in which a current extraction lead wire of a battery component is provided on the surface of the electrolyte tube 5. It is designed to be attached to 7. Figure 6
6A is a high-temperature solid oxide fuel cell cross-sectional view (longitudinal cross-sectional view) in which a current extraction line is installed on a surface of an electrolyte tube with a recessed portion, and FIG. 6B is a high-temperature solid oxide of FIG. 6A. The AA sectional view (transverse sectional view) of an oxide fuel cell is shown. Due to the presence of the recessed portion, when the current extracting portions 16 and 21 are joined to the electrode surface with a brazing material or the like, when the brazing material melts, the brazing material can be prevented from flowing to a portion other than the joining portion, At the same time as ensuring the joining, it is possible to prevent the performance of the battery from being deteriorated by the flow of the brazing material to the unnecessary portion.
【００２３】本発明の実施の形態によれば、薄肉電解質
チューブの電池構成部とセラミックス筒を接合すること
により、このセラミックス筒部でセルを支持し、同時に
そのつば部分でセル支持板と固定することで、同時に燃
料、あるいは空気ヘッダー部とのシールも兼ねることが
できる。また、セラミックス筒内には電流取り出しリー
ド線が内蔵されており、電池構成部の電流取り出し部と
接触させることで外部へ電流を取り出すことができる。
本構造により電池構成部に大きな応力を発生させず、単
セルでの交換が可能な、急速起動，停止の可能な高性能
で信頼性の高い高温固体酸化物形燃料電池を提供するこ
とができる。According to the embodiment of the present invention, by joining the battery constituent portion of the thin-walled electrolyte tube and the ceramic cylinder, the cell is supported by the ceramic cylinder portion and, at the same time, is fixed to the cell support plate by the flange portion. By doing so, at the same time, it can also serve as a seal with the fuel or air header portion. Further, a current extraction lead wire is built in the ceramic cylinder, and the current can be extracted to the outside by contacting with the current extraction part of the battery constituent part.
With this structure, it is possible to provide a high-performance and high-reliability high-temperature solid oxide fuel cell that does not generate a large stress in the cell components and can be replaced in a single cell and can be rapidly started and stopped. .
【００２４】[0024]
【発明の効果】本発明によると、電解質チューブの薄肉
化を達成するとともに、信頼性の高い高温固体酸化物形
燃料電池を提供することにある。According to the present invention, it is possible to provide a high temperature solid oxide fuel cell which achieves a thin electrolyte tube and is highly reliable.
【図１】本発明の実施の形態による高温固体酸化物形燃
料電池構造断面図。FIG. 1 is a cross-sectional view of a high temperature solid oxide fuel cell structure according to an embodiment of the present invention.
【図２】バネ構造による電流取り出し部接合方式を示す
高温固体酸化物形燃料電池構造断面図。FIG. 2 is a cross-sectional view of a high temperature solid oxide fuel cell structure showing a current extraction part joining method using a spring structure.
【図３】電流取り出し線を電池構成部内面の電極と接合
しやすくした高温固体酸化物形燃料電池構造断面図。FIG. 3 is a cross-sectional view of a high temperature solid oxide fuel cell structure in which a current extraction line is easily joined to an electrode on the inner surface of a cell constituent part.
【図４】電流取り出しリード線接合部の電極を２層構造
とした高温固体酸化物形燃料電池構造断面図。FIG. 4 is a cross-sectional view of a high-temperature solid oxide fuel cell structure in which an electrode at a current extraction lead wire joint has a two-layer structure.
【図５】２層電極部の表面電極を金属層とした高温固体
酸化物形燃料電池構造断面図。FIG. 5 is a cross-sectional view of a high temperature solid oxide fuel cell structure in which the surface electrode of the two-layer electrode portion is a metal layer.
【図６（ａ）】凹み部付き電解質チューブ面に電流取り
出し線を設置した高温固体酸化物形燃料電池断面図。FIG. 6 (a) is a cross-sectional view of a high temperature solid oxide fuel cell in which a current extraction line is installed on the surface of an electrolyte tube with a recess.
【図６（ｂ）】図６（ａ）の高温固体酸化物形燃料電池
のＡ−Ａ断面図。6 (b) is a cross-sectional view taken along the line AA of the high temperature solid oxide fuel cell of FIG. 6 (a).
１…電池構成部、５…電解質チューブ、６…電解質チュ
ーブ表面凹み部、７…電解質チューブ内面凹み部、１０
…空気極側電極、１１…空気局側電流取り出し部、１
２，２２…電極接続部、１４…空気の流れ、１６，２１
…電流取り出し部、１８…燃料極側２層電極、１９…燃
料極側電極表面金属層、２０…燃料極側電極、２３…流
入燃料、２４…未反応燃料及び反応生成物、２８…空気
極側２層電極、２９…空気極側電極表面金属層、４０…
セラミックス筒、４１…セラミックス筒つば部、５０…
電池構成部とセラミックス筒接合部、６１…電池構成部
内面電極用バネ、６２…電池構成部表面電極用バネ。DESCRIPTION OF SYMBOLS 1 ... Battery structure part, 5 ... Electrolyte tube, 6 ... Electrolyte tube surface dent part, 7 ... Electrolyte tube inner surface dent part, 10
... air electrode side electrode, 11 ... air station side current extraction part, 1
2, 22 ... Electrode connection part, 14 ... Air flow, 16, 21
... current extraction part, 18 ... fuel electrode side two-layer electrode, 19 ... fuel electrode side electrode surface metal layer, 20 ... fuel electrode side electrode, 23 ... inflow fuel, 24 ... unreacted fuel and reaction product, 28 ... air electrode Side two-layer electrode, 29 ... Air electrode side electrode surface metal layer, 40 ...
Ceramics cylinder, 41 ... Ceramics cylinder collar part, 50 ...
Battery component and ceramic cylinder joint, 61 ... Spring for battery component inner surface electrode, 62 ... Spring for battery component surface electrode.
Claims (9)
状の電池構成部と、 円筒軸方向で該電池構成部の一方の端部に連結される円
筒状のセラミックス部とを備え、 該セラミック部に支持部材に取り付けるための取付部を
設け、且つ、前記燃料側電極及び空気側電極からの電流
の取り出し部を円筒軸方向でセラミックス部側に設ける
ことを特徴とする高温固体酸化物形燃料電池。1. A cylindrical battery component having a fuel-side electrode and an air-side electrode, and a cylindrical ceramic component connected to one end of the battery component in the direction of the cylinder axis. A high temperature solid oxide type, characterized in that a mounting portion for mounting to a supporting member is provided on the ceramic portion, and a portion for taking out an electric current from the fuel side electrode and the air side electrode is provided on the ceramic portion side in the cylindrical axis direction. Fuel cell.
を軸方向で分割し、 一方を、燃料側電極及び空気側電極とを有する円筒状の
電池構成部とし、 他方を、支持部材に取り付けるための取付部を有する円
筒状のセラミックス部とし、 前記燃料側電極及び空気側電極からの電流の取り出し部
を円筒軸方向でセラミックス部側に設けることを特徴と
する高温固体酸化物形燃料電池。2. A high temperature solid oxide fuel cell having a cylindrical shape is divided in the axial direction, one of which is a cylindrical cell constituent part having a fuel side electrode and an air side electrode, and the other is a supporting member. A high temperature solid oxide fuel, characterized in that a cylindrical ceramic part having a mounting part for mounting on a ceramic part is provided on the ceramic part side in the axial direction of the cylinder. battery.
にＬａ／Ｓｒ／ＭｎＯ3 系，Ｎｉ系などの電極材などか
ら構成される高温固体酸化物型燃料電池において、円筒
状の電池構成部と、この電池構成部をセル固定板に支持
し、電池部からの電流を取り出すリード線を内蔵するセ
ラミック円筒とから構成され、電池構成部をこのセラミ
ックス円筒内に挿入し、この部分を接合することで電池
内部の流体が外部へ漏れることを防止し、電池単セルを
個別に取り外し可能な構造としたことを特徴とする高温
固体酸化物形燃料電池。3. A high-temperature solid oxide fuel cell comprising a stabilized zirconia or the like as an electrolyte and La / Sr / MnO 3 system or Ni system electrode material on both sides thereof. , Consisting of a ceramic cylinder supporting this battery component on a cell fixing plate and incorporating a lead wire for taking out the current from the battery component, inserting the battery component into this ceramic cylinder, and joining this part A high-temperature solid oxide fuel cell, characterized in that the fluid inside the battery is prevented from leaking to the outside, and the battery single cells are individually removable.
池において、 前記電池構成部の一端の内面電極へセラミック円筒のリ
ード線を接着剤、あるいはロー材，溶接等で固定し、電
池構成部の表面電極にはセラミック円筒からのもう一つ
のリード線を前記と同様な方法で固定し、セラミックス
円筒の内部がセル支持板と密封された空間で構成される
燃料あるいは空気ヘッダーに連通し、単セルの交換が可
能なモジュール構造としたことを特徴とする高温固体酸
化物形燃料電池。4. The high temperature solid oxide fuel cell according to claim 3, wherein a lead wire of a ceramic cylinder is fixed to an inner surface electrode at one end of the cell constituent portion with an adhesive, a brazing material, welding or the like, Another lead wire from a ceramic cylinder is fixed to the surface electrode of the component in the same manner as above, and the inside of the ceramic cylinder communicates with the fuel or air header which is composed of the space sealed with the cell support plate. A high temperature solid oxide fuel cell having a modular structure in which single cells can be replaced.
池において、 前記電池構成部電極とセラミックス円筒のリード線との
接触を、セラミックス円筒の内面に設置した電気良導体
材料で構成される１つ以上のバネ構造部に、電池構成部
の端部を挿入することで形成することを特徴とする高温
固体形酸化物燃料電池。5. The high temperature solid oxide fuel cell according to claim 3, wherein the electrode of the cell constituting portion and the lead wire of the ceramic cylinder are made of an electrically conductive material installed on the inner surface of the ceramic cylinder. A high-temperature solid oxide fuel cell, characterized by being formed by inserting an end portion of a cell constituent portion into one or more spring structure portions.
池において、 前記電池構成部内面電極とセラミックス円筒のリード線
接合で、セラミックス円筒へ挿入される電池構成部端の
一部をカットし、電池構成部の内面が開放されるように
し、この開放部へリード線を接合することを特徴とする
高温固体酸化物形燃料電池。6. The high temperature solid oxide fuel cell according to claim 4, wherein a part of an end of a battery component inserted into the ceramic cylinder is cut by connecting a lead wire between the inner electrode of the battery component and the ceramic cylinder. A high temperature solid oxide fuel cell is characterized in that the inner surface of the cell constituent part is opened and a lead wire is joined to this opening.
池において、 前記電池構成部において、内外面の電極構成材料に電極
の長寿命，性能向上の観点から電解質部を構成する部分
安定化ジルコニア粉末を混合した場合、これら電極とセ
ラミックス円筒のリード線との接合をよくするため、リ
ード線との接合部に部分安定化ジルコニアを混入しない
電極部を設けたことを特徴とする高温固体酸化物形燃料
電池。7. The high temperature solid oxide fuel cell according to claim 3, wherein in the cell constituent part, the electrode constituent material of the inner and outer surfaces is a partially stable constituent of the electrolyte part from the viewpoint of long life of the electrode and performance improvement. When mixed with powdered zirconia powder, in order to improve the bonding between these electrodes and the lead wire of the ceramic cylinder, a high-temperature solid characterized by providing an electrode part that does not mix partially stabilized zirconia in the joint part with the lead wire. Oxide fuel cell.
池において、 前記電池構成部において、セラミックス筒に挿入される
側の電池構成部の内外面の表面に薄い金属層を部分的に
設け、この部分で電池構成部の電流取り出しリード線と
セラミックス筒側のリード線とを接合させたことを特徴
とした高温固体酸化物形燃料電池。8. The high temperature solid oxide fuel cell according to claim 3, wherein a thin metal layer is partially formed on the inner and outer surfaces of the cell constituent portion of the cell constituent portion on the side to be inserted into the ceramic cylinder. A high-temperature solid oxide fuel cell, characterized in that the lead wire for current extraction of the cell constituent portion and the lead wire on the side of the ceramic tube are joined at this portion.
池において、 前記電池構成部において、部分安定化ジルコニアで構成
される電解質チューブの内外表面に凹み部を設け、この
部分に電池構成部の電流取り出しリード線を取り付ける
ことを特徴とした高温固体酸化物形燃料電池。9. The high temperature solid oxide fuel cell according to claim 3, wherein in the cell constituent portion, a concave portion is provided on inner and outer surfaces of an electrolyte tube made of partially stabilized zirconia, and the cell constituent portion is provided at this portion. High temperature solid oxide fuel cell characterized in that it is equipped with a current-drawing lead wire in some parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002108680A JP2003303602A (en) | 2002-04-11 | 2002-04-11 | High temperature solid oxide fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002108680A JP2003303602A (en) | 2002-04-11 | 2002-04-11 | High temperature solid oxide fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003303602A true JP2003303602A (en) | 2003-10-24 |
Family
ID=29392353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002108680A Pending JP2003303602A (en) | 2002-04-11 | 2002-04-11 | High temperature solid oxide fuel cell |
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| Country | Link |
|---|---|
| JP (1) | JP2003303602A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011034946A (en) * | 2009-08-04 | 2011-02-17 | Samsung Electro-Mechanics Co Ltd | Fuel cell with current-collectable manifold |
| JP2011527820A (en) * | 2008-07-08 | 2011-11-04 | シーメンス エナジー インコーポレイテッド | Solid oxide fuel cell with transition cross section for improved anode gas management at open end |
-
2002
- 2002-04-11 JP JP2002108680A patent/JP2003303602A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011527820A (en) * | 2008-07-08 | 2011-11-04 | シーメンス エナジー インコーポレイテッド | Solid oxide fuel cell with transition cross section for improved anode gas management at open end |
| JP2011034946A (en) * | 2009-08-04 | 2011-02-17 | Samsung Electro-Mechanics Co Ltd | Fuel cell with current-collectable manifold |
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