JP3319136B2 - Solid electrolyte fuel cell - Google Patents
Solid electrolyte fuel cellInfo
- Publication number
- JP3319136B2 JP3319136B2 JP07017594A JP7017594A JP3319136B2 JP 3319136 B2 JP3319136 B2 JP 3319136B2 JP 07017594 A JP07017594 A JP 07017594A JP 7017594 A JP7017594 A JP 7017594A JP 3319136 B2 JP3319136 B2 JP 3319136B2
- Authority
- JP
- Japan
- Prior art keywords
- solid electrolyte
- mol
- intermediate layer
- ceo
- layer
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/124—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte
- H01M8/1246—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0088—Composites
- H01M2300/0094—Composites in the form of layered products, e.g. coatings
-
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、固体電解質燃料電池に
関する。特には、固体電解質層と燃料極層との間の接触
抵抗が低く発電効率の高い固体電解質燃料電池に関す
る。The present invention relates to relates <br/> the solid electrolyte fuel cells. Particularly, Ru <br/> relates to a contact high resistance power generation efficiency lower solid electrolyte fuel cells between the solid electrolyte layer and the fuel electrode layer.
【０００２】[0002]
【従来の技術】円筒型セルタイプＳＯＦＣを例にとって
従来技術を説明する。円筒型セルタイプＳＯＦＣ（以下
ＣＣＳＯＦＣと言う）は、特公平１−５９７０５等によ
って公知である。ＣＣＳＯＦＣは、電極支持管−空気電
極−固体電解質−燃料電極−インターコネクターで構成
される円筒型セルを有する。空気電極側に酸素（空気）
を流し、燃料電極側にガス燃料（Ｈ2 、ＣＯ等）を流し
てやると、このセル内でＯ2 -イオンが移動して化学的燃
焼が起り、空気電極と燃料電極の間に電位が生じ発電が
行われる。2. Description of the Related Art The prior art will be described using a cylindrical cell type SOFC as an example. A cylindrical cell type SOFC (hereinafter, referred to as CCSOFC) is known from Japanese Patent Publication No. 1-59705. The CCSOFC has a cylindrical cell composed of an electrode support tube, an air electrode, a solid electrolyte, a fuel electrode, and an interconnector. Oxygen (air) on the air electrode side
When gaseous fuel (H 2 , CO, etc.) is allowed to flow to the fuel electrode side, O 2 - ions move in this cell, causing chemical combustion, and a potential is generated between the air electrode and the fuel electrode. Power generation is performed.
【０００３】ＳＯＦＣの発電効率を高めるためには、セ
ル自身の内部抵抗を下げる必要がある。セルの内部抵抗
には、固体電解質膜の抵抗や電極表面におけるイオン化
反応に伴う抵抗、電極材・インタコネクタ等のオーム抵
抗、及び、各膜間の接触抵抗が含まれる。このうち、各
膜間の接触抵抗を低くするには、各膜間のミクロ的密着
性を上げる必要がある。ＳＯＦＣセルの各膜は、セラミ
ックスや金属の薄膜（厚さ数μm 〜数百μm ）であり、
各種材質の膜を、基体上に順次形成していく方法によっ
てセルが製造される。In order to increase the power generation efficiency of an SOFC, it is necessary to lower the internal resistance of the cell itself. The internal resistance of the cell includes the resistance of the solid electrolyte membrane, the resistance associated with the ionization reaction on the electrode surface, the ohmic resistance of the electrode material and the interconnector, and the contact resistance between the membranes. In order to reduce the contact resistance between the films, it is necessary to increase the microscopic adhesion between the films. Each film of the SOFC cell is a thin film of ceramics or metal (thickness of several μm to several hundred μm),
A cell is manufactured by a method of sequentially forming films of various materials on a substrate.
【０００４】固体電解質層上に燃料極層を形成する方法
としては、溶射法（特開昭６１−１９８５７０）、ＣＶ
Ｄ・ＥＶＤ法（特開昭６１−１５３２８０）、スラリー
コート法等がある。[0004] As a method of forming a fuel electrode layer on a solid electrolyte layer, a thermal spraying method (Japanese Patent Laid-Open No. 61-198570), a CV
D. EVD method (JP-A-61-153280), slurry coating method and the like are available.
【０００５】[0005]
【発明が解決しようとする課題】上記各種製造方法の差
はあるが、従来の固体電解質燃料電池においては、固体
電解質層上に直接燃料極層を形成していた。そのため、
両相界面での接触抵抗が大きくなっていた。というの
は、燃料極は電子導電性、電解質はイオン導電性である
ため、両者の接触界面のみで電流が流れるようになって
いるが、固体電解質上に直接燃料極を形成すると、両者
の接触は点接触状態となり、そのため接触抵抗が増大し
ていたのである。Although there is a difference between the above-mentioned various manufacturing methods, in the conventional solid electrolyte fuel cell, the fuel electrode layer is formed directly on the solid electrolyte layer. for that reason,
The contact resistance at the interface between both phases increased. This is because the fuel electrode is electronically conductive and the electrolyte is ionically conductive, so that current flows only at the contact interface between them, but if the fuel electrode is formed directly on the solid electrolyte, Was in a point contact state, and the contact resistance was increased.
【０００６】本発明は、固体電解質層と燃料極層との間
の接触抵抗が低く発電効率の高い固体電解質燃料電池を
提供することを目的とする。The present invention aims to <br/> provide a contact high resistance power generation efficiency lower solid electrolyte fuel cells between the solid electrolyte layer and the fuel electrode layer.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するた
め、本願発明の固体電解質燃料電池は、 空気電極と；
Ｙ2 Ｏ3 安定化ＺｒＯ2 （ＹＳＺ）からなる固体電解質
層と； この固体電解質層上に形成された、ｙ(mol％）
ＣｅＯ 2 を含むＹＳＺ（０＜ｙ≦１０）、又は、ｘ(mol
％）ＴｉＯ 2 及びｙ(mol％）ＣｅＯ 2 を含むＹＳＺ（た
だし０＜ｘ、ｙ≦１０）からなる中間層と； この中間
層上に形成された、金属Ｎｉ及び／又は酸化Ｎｉと上記
中間層を構成する物質との混合物からなる燃料極層と；
を含むことを特徴とする。In order to solve the above problems, a solid electrolyte fuel cell according to the present invention comprises an air electrode;
A solid electrolyte layer made of Y 2 O 3 stabilized ZrO 2 (YSZ); y (mol%) formed on this solid electrolyte layer
YSZ containing CeO 2 (0 <y ≦ 10) or x (mol
%) YSZ containing TiO 2 and y (mol%) CeO 2
An intermediate layer comprising 0 <x, y ≦ 10 ); and a fuel electrode layer formed on the intermediate layer and made of a mixture of metal Ni and / or Ni oxide and the substance constituting the intermediate layer;
It is characterized by including.
【０００８】[0008]
【作用】上記中間層中のＣｅＯ 2 あるいはＣｅＯ 2 及び
ＴｉＯ 2 という電子導電性材料の働きにより、固体電解
質層と燃料極層との界面の接触抵抗を下げることができ
る。すなわち、中間層に電子導電性を持たせることによ
り、電解質層と燃料極との電流パスを多くすることがで
きる（図１参照）。つまり、電流の流れる道を多くする
ことができるため接触抵抗が減らすことができるのであ
る。中間層の主成分をＹＳＺとしたのは、固体電解質燃
料電池は１０００℃という高温で作動するので、ヒート
サイクルなどによる熱応力を少なくするため、線膨張係
数を電解質層の同係数と近づける必要があるからであ
る。The CeO 2 or CeO 2 in the intermediate layer and
By the action of an electron conductive material that TiO 2, it is possible to reduce the contact resistance at the interface between the solid electrolyte layer and the fuel electrode layer. That is, by providing the intermediate layer with electronic conductivity, the number of current paths between the electrolyte layer and the fuel electrode can be increased (see FIG. 1). That is, the number of paths through which the current flows can be increased, so that the contact resistance can be reduced. The main component of the intermediate layer is YSZ because the solid electrolyte fuel cell operates at a high temperature of 1000 ° C., so that the linear expansion coefficient needs to be close to that of the electrolyte layer in order to reduce thermal stress due to heat cycles and the like. Because there is.
【０００９】ＴｉＯ2 、ＣｅＯ2 の含有量（ｘ、ｙ mol
％）が０＜ｘ、ｙ≦１０に制限される理由は、ある程度
以上、ＴｉＯ2 、ＣｅＯ2 が多くなると、イオン導電性
が著しく低下し、中間層、固体電解質間の抵抗が増すと
考えられるからである。The content of TiO 2 and CeO 2 (x, y mol
%) Is limited to 0 <x, y ≦ 10. It is considered that the ionic conductivity significantly decreases and the resistance between the intermediate layer and the solid electrolyte increases when TiO 2 and CeO 2 increase to a certain degree or more. Because.
【００１０】本発明の固体電解質燃料電池を製造する方
法の一例としては、空気電極の表面に形成されたＹ2 Ｏ
3 安定化ＺｒＯ2 （ＹＳＺ）からなる固体電解質層と；
この固体電解質層上に形成された、ｙ(mol％）ＣｅＯ2
を含むＹＳＺ、又は、ｘ(mol％）ＴｉＯ2 及びｙ(mol
％）ＣｅＯ2 を含むＹＳＺ（ただし０＜ｘ、ｙ≦１０）
からなる中間層と；この中間層上に形成された、金属Ｎ
ｉ及び／又は酸化Ｎｉと上記中間層を構成する物質との
混合物からなる燃料極層と；を含む固体電解質燃料電池
の製造方法であって；上記中間層を上記固体電解質層上
にスラリーコート・乾燥する中間層塗膜工程と；上記燃
料極層をスラリーコート・乾燥する燃料極層塗膜工程
と；両塗膜を共焼成する焼成工程と； を含む方法を挙
げることができる。As an example of a method for manufacturing the solid oxide fuel cell of the present invention, Y 2 O formed on the surface of an air electrode is used.
A solid electrolyte layer made of 3 stabilized ZrO 2 (YSZ);
Y (mol%) CeO 2 formed on this solid electrolyte layer
Or x (mol%) TiO 2 and y (mol
%) YSZ containing CeO 2 (where 0 <x, y ≦ 10)
An intermediate layer consisting of: a metal N formed on the intermediate layer
a fuel electrode layer comprising a mixture of i and / or Ni oxide and a substance constituting the intermediate layer; and a slurry coating the intermediate layer on the solid electrolyte layer. An intermediate layer coating step of drying; a fuel electrode layer coating step of slurry coating and drying the fuel electrode layer; and a firing step of co-firing both coatings.
【００１１】中間層と燃料極層とをスラリーコートによ
り上下に塗膜した後に両塗膜を共焼成することにより、
密着性を向上し、接触抵抗を下げることができる。[0011] By coating the intermediate layer and the fuel electrode layer on the upper and lower sides by slurry coating and then co-firing the two coatings,
The adhesion can be improved and the contact resistance can be reduced.
【００１２】[0012]
【００１３】[0013]
【００１４】本発明の固体電解質燃料電池においては、
中間層の厚さは、０．５〜５０μm、さらには１〜１０
μm 、であることが好ましい。その理由は、０．５μm
未満だと中間層効果が小さく、５０μm を超えると接触
抵抗及び集電抵抗が大となり電池性能が低下するからで
ある。１〜１０μm の範囲では、安定して効果が得られ
る。In the solid electrolyte fuel cell of the present invention,
The thickness of the intermediate layer is 0.5 to 50 μm, further 1 to 10 μm.
μm. The reason is 0.5μm
If it is less than 50 μm, the effect of the intermediate layer is small. In the range of 1 to 10 μm, the effect can be obtained stably.
【００１５】[0015]
【実施例】以下、本願発明の実施例を説明する。図２
は、本願発明の一実施例に係る固体電解質燃料電池の一
部構造を模した実験用試料の構成を示す図である。固体
電解質層１２の上面には、後に詳述する中間層１３、燃
料極層１４が膜上に重なるように形成されている。固体
電解質層１２の下面には、Ｐｔ電極１５が形成されてい
る。燃料極層１４とＰｔ電極１５には、リード線１７、
１８が取付けられており、この試料の過電圧特性を測定
できるようになっている。Embodiments of the present invention will be described below. FIG.
FIG. 1 is a view showing a configuration of an experimental sample that simulates a partial structure of a solid oxide fuel cell according to one embodiment of the present invention. On the upper surface of the solid electrolyte layer 12, an intermediate layer 13 and a fuel electrode layer 14, which will be described in detail later, are formed so as to overlap the membrane. On the lower surface of the solid electrolyte layer 12, a Pt electrode 15 is formed. A lead wire 17 is connected to the fuel electrode layer 14 and the Pt electrode 15.
18 is attached so that the overvoltage characteristic of this sample can be measured.
【００１６】図２の試料の作成方法を説明する。 （１）固体電解質基板：ＺｒＯ2 ＋８ mol％Ｙ2 Ｏ3 の
固体電解質基板（プレス成形法により、厚１０００μm
に形成されたもの、焼成済）を準備した。A method for preparing the sample shown in FIG. 2 will be described. (1) Solid electrolyte substrate: ZrO 2 +8 mol% Y 2 O 3 solid electrolyte substrate (1000 μm thick by press molding)
, Which had been fired).
【００１７】（２）中間層塗膜用スラリー調整： ＺｒＯ2 ＋８ mol％Ｙ2 Ｏ3 の粉末（粒度０．１〜５μ
m ）に表１に記載の添加量のＴｉＯ 2 、ＣｅＯ 2 を加え
た粉末を用い、さらに、有機溶剤（α・テルピネオー
ル、エチルアルコール）２０重量部、バインダー（ＰＶ
Ｂ）１重量部、分散剤（ポリオキシエチレンアルキルリ
ン酸エステル）１重量部、消泡剤（ソルビタンセスキオ
レエート）１重量部とを混合した後、十分攪拌して中間
層塗膜用スラリーを調整した。このスラリーの粘度は５
００cps であった。(2) Preparation of slurry for intermediate layer coating: powder of ZrO 2 +8 mol% Y 2 O 3 (particle size: 0.1 to 5 μm)
m) , TiO 2 and CeO 2 in the amounts shown in Table 1 were added.
With powder, further, an organic solvent (alpha · terpineol, ethyl alcohol) 20 parts by weight, binder (PV
B) 1 part by weight of a dispersant (Poriokishie Chi alkylene alkyl phosphate ester) 1 part by weight, a defoaming agent (sorbitan sesquioleate) was mixed with 1 part by weight, the intermediate was sufficiently stirred
Adjusting the layer coating slurry. The viscosity of this slurry is 5
00 cps.
【００１８】（３）燃料極層塗膜スラリー調整： ＮｉＯ粉末（粒径０．２〜１０μm ）、上記中間層構成
物質（粉末）１０重量部と、有機溶剤（α・テルピネオ
ール、エチルアルコール）２０重量部、バインダー（Ｐ
ＶＢ）２重量部、分散剤（ポリオキシエチレンアルキル
リン酸エステル）１重量部、消泡剤（ソルビタンセスキ
オレエート）１重量部とを混合した後、十分攪拌して燃
料極層塗膜用スラリーを調整した。このスラリーの粘度
は７００cps であった。(3) Preparation of slurry for fuel electrode layer coating film: NiO powder (particle size: 0.2 to 10 μm), 10 parts by weight of the above-mentioned intermediate layer constituent material (powder), and organic solvent (α-terpineol, ethyl alcohol) 20 Parts by weight, binder (P
VB) 2 parts by weight, dispersant (Poriokishie Chi alkylene alkyl phosphate ester) 1 part by weight, a defoaming agent (sorbitan sesquioleate) was mixed with 1 part by weight, fuel sufficiently stirred
The slurry for the electrode layer coating was prepared. The viscosity of this slurry was 700 cps.
【００１９】（４）塗膜： 上記のように調整した中間層塗膜用スラリーを、固体電
解質基板表面上に、スクリーン印刷法により塗布した。
塗膜厚は１０μm であった。この中間層塗膜を乾燥した
後、さらにその上に、上記のように調整した燃料極層塗
膜用スラリーを、スクリーン印刷法により塗布し、その
後乾燥した。この燃料極層塗膜厚は１００μm であっ
た。なお、燃料電池（電極）用塗膜の厚さは、用途によ
って任意の厚さとできる。(4) Coating: The slurry for an intermediate layer coating prepared as described above was applied on the surface of a solid electrolyte substrate by a screen printing method.
The coating thickness was 10 μm. This after the intermediate layer coating film was dried, further thereon, the adjusted fuel electrode layer coating slurry as above was applied by screen printing and then dried. The thickness of the fuel electrode layer coating film was 100 μm. The thickness of the coating film for a fuel cell (electrode) can be set to any thickness depending on the application.
【００２０】（５）焼成：上記のように塗膜した基板
を、１１００℃、２hrで焼成した。 （６）過電圧測定：上記のように作成した試料を用いて
過電圧測定を行った。その方法は、両リード線間に電流
（１A/cm2)を流し、この電流を遮断した時の電圧変化か
ら過電圧を求めた。なお電流密度（A/cm2)計算の対象と
なる面積は、燃料極の面積とした。得られた過電圧測定
結果を表１に示す。(5) Firing: The substrate coated as described above was fired at 1100 ° C. for 2 hours. (6) Overvoltage measurement: Overvoltage measurement was performed using the sample prepared as described above. In this method, a current (1 A / cm 2 ) was passed between both lead wires, and an overvoltage was determined from a voltage change when the current was cut off. The area for which the current density (A / cm 2 ) was calculated was the area of the fuel electrode. Table 1 shows the obtained overvoltage measurement results.
【００２１】[0021]
【表１】 [Table 1]
【００２２】表１から読み取れるように、ＴｉＯ2 又は
ＣｅＯ2 を０．１ mol％でもＹＳＺ中に添加したのみ
で、顕著な過電圧低下効果が得られる。特に効果が高い
（過電圧１９０mV以下）のは、ＣｅＯ2 を０．１〜１０
mol％、ＴｉＯ2 を１０ mol％以下添加した場合であ
る。最も効果が高い（過電圧１２８mV以下）のは、Ｃｅ
Ｏを５〜７ mol％、ＴｉＯ2 を０．１〜７ mol％添加し
た場合である。As can be seen from Table 1, a remarkable overvoltage lowering effect can be obtained only by adding TiO 2 or CeO 2 to YSZ even at 0.1 mol%. Particularly effective (overvoltage 190 mV or less ) is that CeO 2
mol%, a case where the TiO 2 was added 10 mol% or less. The most effective (overvoltage 128 mV or less) is Ce
O and 5 to 7 mol%, a case of adding TiO 2 0.1~7 mol%.
【００２３】図３は、ＣｅＯ2 添加量と過電圧の関係を
示したグラフである。ＣｅＯ添加量が１０ mol％を越え
ると、過電圧が上昇することを示している。FIG. 3 is a graph showing the relationship between the amount of CeO 2 added and the overvoltage. This indicates that when the amount of CeO added exceeds 10 mol%, the overvoltage increases.
【００２４】図４は、ＴｉＯ2 添加量と過電圧の関係を
示したグラフである。ＴｉＯ2 添加量が１０ mol％を越
えると、過電圧が上昇することを示している。FIG. 4 is a graph showing the relationship between the amount of TiO 2 added and the overvoltage. This indicates that when the amount of TiO 2 added exceeds 10 mol%, the overvoltage increases.
【００２５】[0025]
【発明の効果】以上の説明から明らかなように、本発明
は以下の効果を発揮する。 固体電解質層と燃料極層との
間に、固体電解質に電子導電性材料を添加した中間層を
含むので、固体電解質層と燃料極層との間の界面抵抗
（接触抵抗）を低くでき、発電効率の高い固体電解質燃
料電池を提供できる。 As is apparent from the above description, the present invention
Has the following effects. Between the solid electrolyte layer and the fuel electrode layer
In between, an intermediate layer made by adding an electronic conductive material to the solid electrolyte
Interface resistance between the solid electrolyte layer and the fuel electrode layer
(Contact resistance) and high power generation efficiency with solid electrolyte fuel
Battery can be provided.
【図１】本発明の固体電解質燃料電池の断面模式図であ
る。FIG. 1 is a schematic sectional view of a solid oxide fuel cell according to the present invention.
【図２】本願発明の一実施例に係る固体電解質燃料電池
の一部構造を模した実験用試料の構成を示す図である。FIG. 2 is a view showing a configuration of an experimental sample that simulates a partial structure of a solid oxide fuel cell according to one embodiment of the present invention.
【図３】ＣｅＯ2 添加量と過電圧の関係を示したグラフ
である。FIG. 3 is a graph showing the relationship between the amount of CeO 2 added and the overvoltage.
【図４】ＴｉＯ2 添加量と過電圧の関係を示したグラフ
である。FIG. 4 is a graph showing the relationship between the amount of TiO 2 added and the overvoltage.
【符号の説明】 １ 空気極 ２ 電解質（ＹＳＺ
etc） ３ 中間層 ４ 燃料極 １２ 固体電解質層 １３ 中間層 １４ 燃料極層 １５ Pt電極 １７、１８ リード線[Description of Signs] 1 Air electrode 2 Electrolyte (YSZ
etc) 3 Intermediate layer 4 Fuel electrode 12 Solid electrolyte layer 13 Intermediate layer 14 Fuel electrode layer 15 Pt electrode 17, 18 Lead wire
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−95859（ＪＰ，Ａ) 特開 平４−215254（ＪＰ，Ａ) 特表 平８−509570（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 8/02,8/12 H01M 4/86,4/88 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-95859 (JP, A) JP-A-4-215254 (JP, A) JP-A-8-509570 (JP, A) (58) Survey Field (Int.Cl. 7 , DB name) H01M 8 / 02,8 / 12 H01M 4 / 86,4 / 88
Claims (5)
層と； この固体電解質層上に形成された、ｙ(mol％）ＣｅＯ 2
を含むＹＳＺ（０＜ｙ≦１０）、又は、ｘ(mol％）Ｔｉ
Ｏ 2 及びｙ(mol％）ＣｅＯ 2 を含むＹＳＺ（ただし０＜
ｘ、ｙ≦１０）からなる中間層と； この中間層上に形成された、金属Ｎｉ及び／又は酸化Ｎ
ｉと上記中間層を構成する物質との混合物からなる燃料
極層と； を含むことを特徴とする固体電解質燃料電池。1. An air electrode; a solid electrolyte layer made of Y 2 O 3 stabilized ZrO 2 (YSZ); and y (mol%) CeO 2 formed on this solid electrolyte layer .
(0 <y ≦ 10) or x (mol%) Ti
YSZ containing O 2 and y (mol%) CeO 2 (where 0 <
x, y ≦ 10 2 ); metal Ni and / or N oxide formed on this intermediate layer
a fuel electrode layer comprising a mixture of i and a substance constituting the intermediate layer.
2 、及び、０．１〜１０mol ％ＣｅＯ2 を含むＹＳＺか
らなることを特徴とする請求項１記載の固体電解質燃料
電池。2. The method according to claim 1, wherein the intermediate layer is composed of the x (mol%) TiO.
2. The solid electrolyte fuel cell according to claim 1, comprising YSZ containing 0.1 to 10 mol% CeO 2. 3.
％、ＴｉＯ2 を０．１〜７ mol％含むＹＳＺからなるこ
とを特徴とする請求項１記載の固体電解質燃料電池。3. The method according to claim 1, wherein the intermediate layer contains CeO 2 in an amount of 5 to 7 mol.
%, The solid electrolyte fuel cell according to claim 1, characterized in that it consists of YSZ containing TiO 2 0.1 to 7 mol%.
mol％含むＹＳＺからなることを特徴とする請求項１記
載の固体電解質燃料電池。4. The method according to claim 1, wherein the intermediate layer contains CeO 2 in an amount of 0.1 to 10%.
The solid electrolyte fuel cell according to claim 1, comprising YSZ containing mol%.
含むＹＳＺからなることを特徴とする請求項１記載の固
体電解質燃料電池。5. The intermediate layer contains CeO 2 in an amount of 5 to 7 mol%.
2. The solid electrolyte fuel cell according to claim 1, comprising YSZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07017594A JP3319136B2 (en) | 1994-03-16 | 1994-03-16 | Solid electrolyte fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07017594A JP3319136B2 (en) | 1994-03-16 | 1994-03-16 | Solid electrolyte fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07254418A JPH07254418A (en) | 1995-10-03 |
| JP3319136B2 true JP3319136B2 (en) | 2002-08-26 |
Family
ID=13423940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07017594A Expired - Lifetime JP3319136B2 (en) | 1994-03-16 | 1994-03-16 | Solid electrolyte fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3319136B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0955685A4 (en) * | 1996-12-20 | 2008-12-10 | Tokyo Gas Co Ltd | Fuel electrode of solid electrolyte type fuel cell and process for the preparation of the same |
| JP5031187B2 (en) * | 2004-11-19 | 2012-09-19 | 東邦瓦斯株式会社 | SOLAR ELECTRODE FOR SOLID OXIDE FUEL CELL AND SOLID OXIDE FUEL CELL |
| JP2006344543A (en) * | 2005-06-10 | 2006-12-21 | Tokyo Electric Power Co Inc:The | Manufacturing method of cell for solid oxide fuel battery |
| DE102011078614B4 (en) | 2011-07-04 | 2019-06-27 | Siltronic Ag | Apparatus and method for caching a plurality of semiconductor wafers |
| US9812726B2 (en) | 2012-01-30 | 2017-11-07 | Kyocera Corporation | Solid oxide fuel cell, fuel cell module, and fuel cell device |
| JP6734816B2 (en) * | 2017-06-21 | 2020-08-05 | 日本特殊陶業株式会社 | Electrochemical cell and electrochemical stack |
-
1994
- 1994-03-16 JP JP07017594A patent/JP3319136B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07254418A (en) | 1995-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5184731B2 (en) | FLEXIBLE ELECTRODE / ELECTROLYTE STRUCTURE FOR SOLID OXIDE FUEL CELL, FUEL CELL DEVICE, AND METHOD FOR PRODUCING THE SAME | |
| US5670270A (en) | Electrode structure for solid state electrochemical devices | |
| US5035962A (en) | Layered method of electrode for solid oxide electrochemical cells | |
| Matsuzaki et al. | Dependence of SOFC cathode degradation by chromium-containing alloy on compositions of electrodes and electrolytes | |
| US6852436B2 (en) | High performance solid electrolyte fuel cells | |
| US4767518A (en) | Cermet electrode | |
| US5281490A (en) | Process for producing solid oxide fuel cells | |
| EP1032953A1 (en) | Sintered electrode for solid oxide fuel cells | |
| JP3981418B2 (en) | Electrode structure for solid state electrochemical devices | |
| JP3319136B2 (en) | Solid electrolyte fuel cell | |
| JPH07320754A (en) | Connecting structure between solid electrolytic film and electrode film, and its manufacture | |
| JPH1021935A (en) | Solid electrolyte fuel cell | |
| JP2011210623A (en) | Power generation film for solid electrolyte fuel cell, and solid electrolyte fuel cell having the same | |
| JPH1173982A (en) | Solid electrolyte fuel cell and its manufacture | |
| JPH08162120A (en) | Solid electrolyte type electrochemical cell | |
| JPH1074528A (en) | Solid electrolyte fuel cell and its manufacture | |
| JP3256919B2 (en) | Solid electrolyte fuel cell | |
| EP0519681B1 (en) | Method for preparing anode for solid oxide fuel cells | |
| JPH07130385A (en) | Cylindrical lateral band type solid electrolyte electrolytic cell | |
| JP3533694B2 (en) | Porous conductive material powder, method for producing the same, and method for producing fuel cell | |
| JPH09190824A (en) | Fuel electrode structure of fuel cell of solid electrolyte type and manufacture thereof | |
| Visco et al. | Fabrication and performance of thin-film SOFCs | |
| JPH1173981A (en) | Solid electrolyte fuel cell and its manufacture | |
| JPH03192660A (en) | Fuel cell device | |
| JPH08264187A (en) | Solid electrolyte type fuel cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090621 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100621 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100621 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110621 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130621 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140621 Year of fee payment: 12 |
|
| EXPY | Cancellation because of completion of term |