JPH05275106A - Solid electrolyte fuel cell - Google Patents
Solid electrolyte fuel cellInfo
- Publication number
- JPH05275106A JPH05275106A JP4071625A JP7162592A JPH05275106A JP H05275106 A JPH05275106 A JP H05275106A JP 4071625 A JP4071625 A JP 4071625A JP 7162592 A JP7162592 A JP 7162592A JP H05275106 A JPH05275106 A JP H05275106A
- Authority
- JP
- Japan
- Prior art keywords
- separator
- fuel cell
- thermal expansion
- gas
- mgo
- 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
-
- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0215—Glass; Ceramic materials
-
- 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
- H01M2008/1293—Fuel cells with solid oxide electrolytes
-
- 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
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
- H01M2300/0071—Oxides
- H01M2300/0074—Ion conductive at high temperature
-
- 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
- H01M8/1213—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material
- H01M8/1226—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material characterised by the supporting layer
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
- Continuous Casting (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
に係り、特に歪みをなくし、軽量化およびガスシール性
を向上させた固体電解質型燃料電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid oxide fuel cell, and more particularly to a solid oxide fuel cell which has no distortion, is lighter in weight and has improved gas sealability.
【０００２】[0002]
【従来の技術】固体電解質型燃料電池は、平板積層型と
円筒型とに大別され、例えば平板積層型の燃料電池スタ
ックは、平板状固体電解質膜の両面に酸素側電極および
燃料側電極がそれぞれ積層された単セルの前記両電極面
に集電用多孔板を当接し、これをインターコネクタ、セ
パレータまたはガス流路部材を介して多数積層し、前記
単セルを電気的に接続したものである。一方、円筒型の
燃料電池スタックは、円筒状の基体管の表面に、例えば
燃料側電極、固体電解質膜および酸素側電極の順に積層
した、それぞれ直径の異なる単セルをガス流路を確保し
て同心状に積層し、これを電気的に接続したものであ
る。2. Description of the Related Art Solid oxide fuel cells are roughly classified into a flat plate type and a cylindrical type. For example, a flat plate type fuel cell stack has an oxygen side electrode and a fuel side electrode on both sides of a flat solid electrolyte membrane. A porous plate for current collection is brought into contact with the electrode surfaces of each of the laminated single cells, and a large number of these are laminated via an interconnector, a separator or a gas flow path member, and the single cells are electrically connected. is there. On the other hand, in the cylindrical fuel cell stack, on the surface of a cylindrical base tube, for example, a fuel-side electrode, a solid electrolyte membrane, and an oxygen-side electrode are laminated in this order, and a single cell having a different diameter is secured in a gas flow path. Concentric layers are stacked and electrically connected.
【０００３】このような固体電解質型燃料電池（以下、
単にＳＯＦＣということがある）において、セパレー
タ、ガス流路部材、基体管等を構成する構成材料とし
て、例えばカルシア安定化ジルコニア（ＣＳＺ）、アル
ミナ、ＬａＣｒＯ3 系のペロブスカイト等が使用されて
いた。すなわち、例えば円筒形スタックの基体管にはＣ
ＳＺやアルミナ、平板型セルスタックのガス流路部材に
は燃料極材料であるＮｉＯ−ＹＳＺまたはＬａＣｒＯ3
系のペロブスカイト、さらに燃料電池スタックを収納す
るガスマニホルドにはアルミナが用いられていた。Such a solid oxide fuel cell (hereinafter,
(Sometimes referred to as SOFC), calcia-stabilized zirconia (CSZ), alumina, LaCrO 3 -based perovskite, and the like have been used as constituent materials for forming the separator, the gas flow path member, the base pipe, and the like. That is, for example, C is used for a base tube of a cylindrical stack.
NiO-YSZ or LaCrO 3 which is a fuel electrode material is used for the gas flow path member of SZ, alumina, and a flat plate type cell stack.
Alumina was used for the perovskite of the system and for the gas manifold that houses the fuel cell stack.
【０００４】[0004]
【発明が解決しようとする課題】ＳＯＦＣは作動温度が
高いために、構成部材の高温強度や熱膨張係数が問題と
なり、特に各構成部材の熱膨張係数は電解質材料である
イットリウム安定化ジルコニア（ＹＳＺ）にできる限り
近いことが要求される。しかしながら、上記従来技術に
おける固体電解質型燃料電池の構成部材は、その熱膨張
係数が前記ＹＳＺと必ずしも近似しておらず、作動温度
における熱膨張差によって歪みおよび変形が発生すると
いう不都合があった。また、部材相互間のガスシール性
も満足できるものではなかった。Since SOFC has a high operating temperature, the high temperature strength and the coefficient of thermal expansion of the constituent members pose a problem. In particular, the coefficient of thermal expansion of each constituent member is yttrium-stabilized zirconia (YSZ) which is an electrolyte material. ) Is required to be as close as possible. However, the coefficient of thermal expansion of the constituent members of the solid oxide fuel cell in the above-mentioned conventional technology is not always close to that of YSZ, and there is a disadvantage that distortion and deformation occur due to the difference in thermal expansion at the operating temperature. Further, the gas sealability between the members was not satisfactory.
【０００５】本発明の目的は、上記従来技術の問題点を
解決し、セパレータ、ガス流路部材、基体管等の各構成
部材と、固体電解質膜であるＹＳＺとの熱膨張差をなく
し、歪みおよび変形のない固体電解質型燃料電池を提供
することにある。The object of the present invention is to solve the above-mentioned problems of the prior art, eliminate the difference in thermal expansion between the respective constituent members such as the separator, the gas flow path member, the substrate tube and the solid electrolyte membrane YSZ, and to prevent distortion. Another object is to provide a solid oxide fuel cell without deformation.
【０００６】[0006]
【課題を解決するための手段】本発明者は、各種複合セ
ラミックスの熱膨張係数および高温強度について鋭意研
究した結果、マグネシア（ＭｇＯ）とスピネル（ＭｇＡ
ｌ2 Ｏ4 ）との複合セラミックスにおいて、ＭｇＯとＭ
ｇＡｌ2 Ｏ4 の混合比を変化させると、ＭｇＯの割合の
増加に伴って熱膨張係数が増大することに着目し、Ｍｇ
ＯとＭｇＡｌ2Ｏ4 とを重量比で１／９〜１／１で混合
したセラミックスの熱膨張係数が電解質材料であるＹＳ
Ｚの熱膨張係数とほぼ同様になることを見出し、本発明
に到達した。Means for Solving the Problems As a result of earnest studies on the thermal expansion coefficient and high temperature strength of various composite ceramics, the present inventor has found that magnesia (MgO) and spinel (MgA).
l 2 O 4 ), in composite ceramics with MgO and M
Paying attention to the fact that when the mixing ratio of gAl 2 O 4 is changed, the coefficient of thermal expansion increases as the proportion of MgO increases.
YS in which the thermal expansion coefficient of a ceramic obtained by mixing O and MgAl 2 O 4 in a weight ratio of 1/9 to 1/1 is an electrolyte material.
The inventors have found that the coefficient of thermal expansion is substantially the same as that of Z, and have reached the present invention.
【０００７】すなわち本発明は、固体電解質膜としてイ
ットリウム安定化ジルコニアまたはその近似物を用いる
固体電解質型燃料電池の構成材料として、マグネシア
（ＭｇＯ）とスピネル（ＭｇＡｌ2 Ｏ4 ）を主成分と
し、該マグネシアとスピネルとの混合比が重量比で１／
９〜１／１であるセラミックスを用いたことを特徴とす
る。That is, according to the present invention, as a constituent material of a solid oxide fuel cell using yttrium-stabilized zirconia or its approximation as a solid electrolyte membrane, magnesia (MgO) and spinel (MgAl 2 O 4 ) are contained as main components. The mixing ratio of magnesia and spinel is 1 / by weight
It is characterized by using ceramics of 9 to 1/1.
【０００８】図１は、ＭｇＯとＭｇＡｌ2 Ｏ4 とを主成
分とする複合セラミックスにおけるＭｇＯの混合割合
と、１０００℃における熱膨張係数との関係を示す図で
ある。図において、ＭｇＯの割合が１０〜５０ｗｔ％の
範囲で、熱膨張係数が９×１０ -6〜１１×１０-6とな
り、ＹＳＺの１０００℃における熱膨張係数１０．６×
１０-6と同程度となることがわかる。FIG. 1 shows MgO and MgAl.2OFourAnd
Mixing ratio of MgO in composite ceramics
And a diagram showing the relationship between the thermal expansion coefficient at 1000 ° C.
is there. In the figure, the proportion of MgO is 10 to 50 wt%.
Coefficient of thermal expansion is 9 × 10 in the range -6~ 11 x 10-6Tona
The thermal expansion coefficient of YSZ at 1000 ° C. is 10.6 ×
10-6It turns out that it is about the same as.
【０００９】この複合セラミックスはＭｇＡｌ2 Ｏ4 に
混合するＭｇＯ量を加減することによって熱膨張係数を
調整できるので、これを用いてセパレータ、ガス流路部
材、基体管等の構成部材を作製することにより、該構成
部材の熱膨張係数をＹＳＺまたはその近似物と等しくす
ることができる。ＭｇＯの混合割合を１０〜５０ｗｔ％
の範囲で変化させても前記セラミックスの化学的安定性
は変化しない。また、このセラミックスは焼結性も良好
で、例えばＣａＯ等の助材を微量添加することにより、
多孔性のものから緻密なものまで任意に調製することが
できる。Since the coefficient of thermal expansion of this composite ceramics can be adjusted by adjusting the amount of MgO mixed with MgAl 2 O 4 , it is possible to use it to form constituent members such as a separator, a gas flow path member and a base pipe. The coefficient of thermal expansion of the component can be made equal to that of YSZ or its approximation. Mixing ratio of MgO is 10 to 50 wt%
The chemical stability of the ceramics does not change even if it is changed within the range. Further, this ceramic has good sinterability, and by adding a trace amount of an auxiliary material such as CaO,
It can be optionally prepared from porous to dense.
【００１０】このセラミックスの１０００℃における機
械的強度はそれほど強くないが、固体電解質型燃料電池
の構成部材として十分に耐えられる強度を備えている。
図２は、ＭｇＯとＭｇＡｌ2 Ｏ4 の重量比が２／３であ
るセラミックスにおける高温強度（弾性係数）を示す図
である。図において、このセラミックスの弾性係数は８
００℃で１３．５×１０3 ｋｇ／ｍｍ2 、１０００℃で
１１．３×１０3 ｋｇ／ｍｍ2 、１２００℃で８．４×
１０3 ｋｇ／ｍｍ2 を示しており、ＳＯＦＣの作動温度
である１０００℃における弾性強度は８００℃のときよ
りも小さくなっているが、これはＳＯＦＣの構成部材と
して十分に使用できる範囲である。高温での機械的強度
が低下するという、本発明で用いるセラミックスの特性
はセラミックス同志を接合させる場合に好適である。す
なわち機械的強度がある程度低下することによって構成
部材相互間、例えば単セルの固体電解質膜とインターコ
ネクタとの接合面のガスシール性が著しく向上する。The mechanical strength of this ceramic material at 1000 ° C. is not so strong, but it is sufficiently strong as a constituent member of a solid oxide fuel cell.
FIG. 2 is a diagram showing the high temperature strength (elastic coefficient) in a ceramic in which the weight ratio of MgO and MgAl 2 O 4 is 2/3. In the figure, the elastic modulus of this ceramic is 8
13.5 × 10 3 kg / mm 2 at 00 ° C., 11.3 × 10 3 kg / mm 2 at 1000 ° C., 8.4 × at 1200 ° C.
It shows 10 3 kg / mm 2 , and the elastic strength at 1000 ° C., which is the operating temperature of SOFC, is smaller than that at 800 ° C., but this is a range that can be sufficiently used as a constituent member of SOFC. The characteristic of the ceramics used in the present invention that the mechanical strength at high temperature is lowered is suitable when the ceramics are joined together. In other words, the mechanical strength is lowered to some extent, so that the gas sealing property between the constituent members, for example, the joint surface between the solid electrolyte membrane of the single cell and the interconnector is significantly improved.
【００１１】[0011]
【実施例】次に、本発明を実施例によりさらに詳細に説
明する。図３は、本発明の一実施例である平板積層固体
電解質型燃料電池のガスセパレータの斜視図である。こ
のガスセパレータは、単セル相互間に配置されてＳＯＦ
Ｃを構成する部材であり、積層部３およびガス流入出枠
４を有するガスセパレータ本体１と、該ガスセパレータ
本体１のセパレータ部２を貫通するように配置された、
電子流路６と該電子流路６の間に配置された集電体支持
部５とから主として構成されており、ＭｇＯとＭｇＡｌ
2 Ｏ4 との重量比が４５／５５のセラミックスで構成さ
れている。EXAMPLES Next, the present invention will be described in more detail by way of examples. FIG. 3 is a perspective view of a gas separator of a flat plate stacked solid oxide fuel cell according to an embodiment of the present invention. This gas separator is placed between single cells and
A member constituting C, which is arranged so as to penetrate the gas separator body 1 having the laminated portion 3 and the gas inflow / outflow frame 4, and the separator portion 2 of the gas separator body 1.
Mainly composed of an electron flow path 6 and a current collector support portion 5 arranged between the electron flow path 6, and MgO and MgAl
It is composed of ceramics having a weight ratio to 2 O 4 of 45/55.
【００１２】すなわち、ＭｇＯとＭｇＡｌ2 Ｏ4 をそれ
ぞれ０．１μｍ〜５０μｍに粉砕したのち、重量比で４
５対５５になるように混合し、助剤として、例えばＣａ
Ｏを０．３ｗｔ％添加し、これをドクターブレード法で
成形し、１２００〜１８００℃で５時間焼成してガスセ
パレータ本体を得た。このガスセパレータの１０００℃
における熱膨張係数は、１０．７×１０-6であり、固体
電解質膜材料であるＹＳＺの１０００℃における熱膨張
係数１０．６×１０-6とほぼ同様であった。また１００
０℃における弾性係数は２．０×１０ 3 ｋｇ／ｍｍ2 で
あり、十分な機械的強度を有していた。That is, MgO and MgAl2OFourThe
After crushing each to 0.1μm-50μm, 4 by weight ratio
Mix so as to be 5 to 55, and use, for example, Ca as an auxiliary agent.
0.3 wt% of O was added, and this was added by the doctor blade method.
Molded and baked at 1200-1800 ° C for 5 hours
I got the pallet body. 1000 ℃ of this gas separator
Coefficient of thermal expansion is 10.7 × 10-6And solid
Thermal expansion of electrolyte membrane material YSZ at 1000 ° C
Coefficient 10.6 × 10-6Was almost the same as. Again 100
Elasticity coefficient at 0 ° C is 2.0 × 10 3kg / mm2so
And had sufficient mechanical strength.
【００１３】図４は、このようなガスセパレータ１を用
いて単セル１１を積層した燃料電池スタックの構成を示
す図である。図において、上下両面にそれぞれ集電用多
孔板２８が当接された単セル１１がガスセパレータ１を
介して多数積層されている。この単セル積層体は所定の
箱体に収納されて固体電解質型燃料電池となる。本実施
例によれば、ＭｇＯとＭｇＡｌ2 Ｏ4 との混合比が重量
比で４５／５５のセラミックスで作製したガスセパレー
タ１を用いて固体電解質型燃料電池を構成したことによ
り、部材間の熱膨張係数の差をなくすことができるの
で、焼結時の高温による歪みが防止されるとともに、高
温作動時の歪みおよび変形を回避することができる。FIG. 4 is a diagram showing the structure of a fuel cell stack in which unit cells 11 are stacked using such a gas separator 1. In the figure, a large number of single cells 11 having a current collecting porous plate 28 in contact with the upper and lower surfaces thereof are stacked with the gas separator 1 interposed therebetween. This single cell laminated body is housed in a predetermined box to form a solid oxide fuel cell. According to this example, the solid electrolyte fuel cell was constructed by using the gas separator 1 made of ceramics having a mixing ratio of MgO and MgAl 2 O 4 of 45/55 in weight ratio, so that the heat between members can be reduced. Since the difference in expansion coefficient can be eliminated, distortion due to high temperature during sintering can be prevented, and distortion and deformation during high temperature operation can be avoided.
【００１４】本実施例によれば、例えばガスセパレータ
１と、単セル１１の固体電解質膜との接合性がよく、ガ
スシール性が向上する。また、ＳＯＦＣ全体として軽量
化およびコストの低減を図ることができる。次に本発明
の他の実施例を説明する。図５〜図８は、ＭｇＯとＭｇ
Ａｌ2 Ｏ4とを重量比で１／９〜１／１の割合で混合し
たセラミックスからなる構成部材を組み込んだ固体電解
質型燃料電池を示す図である。According to the present embodiment, for example, the gas separator 1 and the solid electrolyte membrane of the unit cell 11 have good bondability, and the gas sealability is improved. Further, it is possible to reduce the weight and cost of the SOFC as a whole. Next, another embodiment of the present invention will be described. 5 to 8 show MgO and Mg.
And al 2 O 4 is a diagram showing a solid oxide fuel cell incorporating components comprising a 1 / 9-1 / 1 ceramics in a mixing ratio in weight.
【００１５】図５は、ＭｇＯとＭｇＡｌ2 Ｏ4 との混合
比が重量比で４２／５８の複合セラミックスを用いて、
前記実施例と同様にして作製したセパレータ１７を有す
る平板積層固体電解質型燃料電池の構成を示す図であ
る。また図６は、ＭｇＯとＭｇＡｌ2 Ｏ4 との比が重量
比で４２／５８の複合セラミックスでを用いて同様の方
法で作製した支持体２２を有する固体電解質型ＳＯＦＣ
である。さらに図７は、ＭｇＯとＭｇＡｌ2 Ｏ4 との混
合比が重量比で４２／５８の複合セラミックスを用いて
同様に作製した円筒型高温固体電解質型燃料電池の基体
管２７を示す説明図であり、図８は図７の要部拡大断面
図である。FIG. 5 shows a composite ceramic in which the mixing ratio of MgO and MgAl 2 O 4 is 42/58 by weight.
It is a figure which shows the structure of the flat plate laminated solid oxide fuel cell which has the separator 17 produced similarly to the said Example. Further, FIG. 6 shows a solid electrolyte type SOFC having a support 22 prepared by the same method using a composite ceramic in which the ratio of MgO to MgAl 2 O 4 is 42/58 by weight.
Is. Further, FIG. 7 is an explanatory view showing a base tube 27 of a cylindrical high temperature solid oxide fuel cell, which is similarly produced by using a composite ceramic in which the mixing ratio of MgO and MgAl 2 O 4 is 42/58 by weight. 8 is an enlarged cross-sectional view of the main part of FIG.
【００１６】本各実施例によれば、ＭｇＯとＭｇＡｌ2
Ｏ4 との重量混合比が１／９〜１／１の複合セラミック
スで各構成部材を作製したことにより、構成部材の熱膨
張係数を任意に選択できるので、構成部材相互間の熱膨
張差をなくし、焼結時または作動時の歪みによる変形等
を回避することができる。また、本実施例に用いられた
セラミックスの比重は、従来使用されていた部分安定化
ジルコニア（ＰＳＺ）の３０〜６０％であり、燃料電池
スタックやモジュールの軽量化および信頼性が向上す
る。さらにＭｇＯおよびＭｇＡｌ2 Ｏ4 は比較的安価で
あり、固体電解質型燃料電池のコストダウンを図ること
ができる。また、ＭｇＯとＭｇＡｌ2 Ｏ4を混合したセ
ラミックスからなる構成部材が適度の弾性強度を有して
いるので、他の部材との接合性は良好で、ガスシール性
が向上する。According to each embodiment, MgO and MgAl 2
Since each constituent member is made of the composite ceramic having a weight mixing ratio with O 4 of 1/9 to 1/1, the coefficient of thermal expansion of the constituent member can be arbitrarily selected. It is possible to avoid deformation due to strain during sintering or during operation. Further, the specific gravity of the ceramics used in this example is 30 to 60% of that of partially stabilized zirconia (PSZ) which has been conventionally used, and the weight reduction and reliability of the fuel cell stack and the module are improved. Further, MgO and MgAl 2 O 4 are relatively inexpensive, and the cost of the solid oxide fuel cell can be reduced. Further, since the constituent member made of ceramics in which MgO and MgAl 2 O 4 are mixed has an appropriate elastic strength, the bondability with other members is good and the gas sealability is improved.
【００１７】[0017]
【発明の効果】本発明によれば、固体電解質型燃料電池
の構成部材としてＭｇＯとＭｇＡｌ2Ｏ4 との混合比が
重量比で１／９〜１／１の複合セラミックスで作製した
ものを用いたことにより、各構成部材相互間の熱膨張係
数の差をなくし、高温における歪みおよび変形を防止す
ることができる。また、燃料電池全体の軽量化およびガ
スシール性の向上を図ることができるうえ、製作コスト
の低減を図ることができる。EFFECTS OF THE INVENTION According to the present invention, as a constituent member of a solid oxide fuel cell, one made of a composite ceramic having a mixing ratio of MgO and MgAl 2 O 4 of 1/9 to 1/1 by weight is used. By doing so, it is possible to eliminate the difference in the coefficient of thermal expansion between the respective constituent members and prevent distortion and deformation at high temperatures. In addition, it is possible to reduce the weight of the entire fuel cell and improve the gas sealability, and it is possible to reduce the manufacturing cost.
【図１】複合セラミックスのＭｇＯの割合と１０００℃
における熱膨張係数の関係を示す図。FIG. 1 Ratio of MgO in composite ceramics and 1000 ° C.
FIG. 4 is a diagram showing the relationship of the coefficient of thermal expansion in FIG.
【図２】複合セラミックスの高温強度を示す図。FIG. 2 is a diagram showing high temperature strength of composite ceramics.
【図３】、[Fig. 3]
【図４】本発明の一実施例である固体電解質型燃料電池
のガスセパレータを示す図。FIG. 4 is a diagram showing a gas separator of a solid oxide fuel cell according to an embodiment of the present invention.
【図５】、[FIG. 5]
【図６】、FIG.
【図７】、[FIG. 7]
【図８】本発明の他の実施例を示す図。FIG. 8 is a diagram showing another embodiment of the present invention.
１…ガスセパレータ、２…セパレータ部、３…積層部、
４…ガス流入枠、５…集電体支持部、６…電子流路、１
２…カレントコレクタ、１３…カソード、１４…電解質
板、１５…アノード、１６…カレントコレクタ、１７…
セパレータ、１８…燃料側電極、１９…ＺｒＯ2 電解
質、２０…酸素側電極、２１…インターコネクタ、２２
支持体、２３…固体電解質、２４…正極、２５…負極、
２６…インターコネクタ、２７…基体管、２８点集電用
多孔板。1 ... Gas separator, 2 ... Separator part, 3 ... Laminated part,
4 ... Gas inflow frame, 5 ... Current collector support part, 6 ... Electron flow path, 1
2 ... Current collector, 13 ... Cathode, 14 ... Electrolyte plate, 15 ... Anode, 16 ... Current collector, 17 ...
Separator, 18 ... Fuel side electrode, 19 ... ZrO 2 electrolyte, 20 ... Oxygen side electrode, 21 ... Interconnector, 22
Support, 23 ... Solid electrolyte, 24 ... Positive electrode, 25 ... Negative electrode,
26 ... Interconnector, 27 ... Base tube, 28-point current collecting porous plate.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 下津 正輝 岡山県玉野市玉３丁目１番１号 三井造船 株式会社玉野事業所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masateru Shimotsu 3-1-1 Tam, Tamano City, Okayama Prefecture Mitsui Engineering & Shipbuilding Co., Ltd. Tamano Works
Claims (1)
ジルコニアまたはその近似物を用いる固体電解質型燃料
電池の構成材料として、マグネシア（ＭｇＯ）とスピネ
ル（ＭｇＡｌ2 Ｏ4 ）を主成分とし、該マグネシアとス
ピネルとの混合比が重量比で１／９〜１／１であるセラ
ミックスを用いたことを特徴とする固体電解質型燃料電
池。1. A magnesia (MgO) and a spinel (MgAl 2 O 4 ) as a main component as a constituent material of a solid electrolyte type fuel cell using yttrium-stabilized zirconia or its approximation as a solid electrolyte membrane. A solid oxide fuel cell characterized by using ceramics having a mixing ratio of 1/9 to 1/1 by weight.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4071625A JPH05275106A (en) | 1992-03-27 | 1992-03-27 | Solid electrolyte fuel cell |
| IT93MI000577A IT1287883B1 (en) | 1992-03-27 | 1993-03-25 | METHOD FOR ASSESSING THE INTERNAL QUALITY OF REFRACTORIES OBTAINED BY MOLTEN CASTING |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4071625A JPH05275106A (en) | 1992-03-27 | 1992-03-27 | Solid electrolyte fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05275106A true JPH05275106A (en) | 1993-10-22 |
Family
ID=13466027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4071625A Pending JPH05275106A (en) | 1992-03-27 | 1992-03-27 | Solid electrolyte fuel cell |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH05275106A (en) |
| IT (1) | IT1287883B1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08269760A (en) * | 1995-03-29 | 1996-10-15 | Agency Of Ind Science & Technol | Cylindrical high-temperature steam electrolytic cell |
| WO2001095416A1 (en) * | 2000-06-05 | 2001-12-13 | Forschungszentrum Jülich GmbH | Device for electrically contacting electrodes in high-temperature fuel cells |
| WO2004030131A3 (en) * | 2002-09-24 | 2004-05-21 | Morgan Crucible Co | Mgo-mgal2o4 refractory components for fuel cells and/or reformers |
| JP2010126374A (en) * | 2008-11-25 | 2010-06-10 | Ngk Insulators Ltd | Method for producing magnesium oxide-spinel composite oxide |
| KR101306593B1 (en) * | 2012-03-30 | 2013-09-10 | (주) 세라컴 | Manufacturing method of support for solid oxide fuel cell |
| JP2013258157A (en) * | 2013-08-26 | 2013-12-26 | Mitsubishi Heavy Ind Ltd | Solid electrolyte fuel cell |
| WO2015176965A1 (en) * | 2014-05-22 | 2015-11-26 | Robert Bosch Gmbh | Fuel cell device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0574470A (en) * | 1991-09-13 | 1993-03-26 | Mitsui Eng & Shipbuild Co Ltd | Gas separator of solid electrolyte fuel cell |
| JPH0582146A (en) * | 1991-02-07 | 1993-04-02 | Yoshida Kogyo Kk <Ykk> | Support member for solid electrolyte fuel cell |
-
1992
- 1992-03-27 JP JP4071625A patent/JPH05275106A/en active Pending
-
1993
- 1993-03-25 IT IT93MI000577A patent/IT1287883B1/en active IP Right Grant
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0582146A (en) * | 1991-02-07 | 1993-04-02 | Yoshida Kogyo Kk <Ykk> | Support member for solid electrolyte fuel cell |
| JPH0574470A (en) * | 1991-09-13 | 1993-03-26 | Mitsui Eng & Shipbuild Co Ltd | Gas separator of solid electrolyte fuel cell |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08269760A (en) * | 1995-03-29 | 1996-10-15 | Agency Of Ind Science & Technol | Cylindrical high-temperature steam electrolytic cell |
| WO2001095416A1 (en) * | 2000-06-05 | 2001-12-13 | Forschungszentrum Jülich GmbH | Device for electrically contacting electrodes in high-temperature fuel cells |
| WO2004030131A3 (en) * | 2002-09-24 | 2004-05-21 | Morgan Crucible Co | Mgo-mgal2o4 refractory components for fuel cells and/or reformers |
| JP2010126374A (en) * | 2008-11-25 | 2010-06-10 | Ngk Insulators Ltd | Method for producing magnesium oxide-spinel composite oxide |
| KR101306593B1 (en) * | 2012-03-30 | 2013-09-10 | (주) 세라컴 | Manufacturing method of support for solid oxide fuel cell |
| JP2013258157A (en) * | 2013-08-26 | 2013-12-26 | Mitsubishi Heavy Ind Ltd | Solid electrolyte fuel cell |
| WO2015176965A1 (en) * | 2014-05-22 | 2015-11-26 | Robert Bosch Gmbh | Fuel cell device |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1287883B1 (en) | 1998-08-26 |
| ITMI930577A1 (en) | 1994-09-25 |
| ITMI930577A0 (en) | 1993-03-25 |
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