JPH0773888A - Manufacture of cell - Google Patents

Manufacture of cell

Info

Publication number
JPH0773888A
JPH0773888A JP5219404A JP21940493A JPH0773888A JP H0773888 A JPH0773888 A JP H0773888A JP 5219404 A JP5219404 A JP 5219404A JP 21940493 A JP21940493 A JP 21940493A JP H0773888 A JPH0773888 A JP H0773888A
Authority
JP
Japan
Prior art keywords
ysz
layer
material layer
slurry
cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP5219404A
Other languages
Japanese (ja)
Inventor
Fumitoshi Sakata
文稔 坂田
Yoshiaki Inoue
好章 井上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP5219404A priority Critical patent/JPH0773888A/en
Publication of JPH0773888A publication Critical patent/JPH0773888A/en
Withdrawn legal-status Critical Current

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Fuel Cell (AREA)

Abstract

PURPOSE:To manufacture a cell without damaging a yttria stabilized zirconia(YSZ) layer by forming a protecting material layer having a linear expansion coefficient nearer to that of the YSZ layer than that of an electrode material layer on the electrode material layer formed on the YSZ layer, followed by baking. CONSTITUTION:An anode material slurry 2 such as LaSrMnO3 is applied to the inner circumferential surface of YSZ tube 1 as a solid electrolyte, thus forming an electrode material layer. Subsequently, a YSZ slurry 4 is applied to the layer, thereby obtaining a protecting material layer. Thereafter, both layers are baked at, e.g. about 1000--1500 deg.C. Meanwhile, a cathode material slurry is applied to the outer peripheral surface of the YSZ tube 1, and further, a YSZ slurry is applied onto the cathode material slurry, followed by baking. Consequently, it is possible to reduce a thermal stress generated in the YSZ tube 1 so as to provide an anode and a cathode without any damage, thus obtaining a cell.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、高温水蒸気電解や固体
電解質燃料電池などに使用されるセルの製造方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing cells used in high temperature steam electrolysis, solid electrolyte fuel cells and the like.

【０００２】[0002]

【従来の技術】宇宙飛行船などの電源システムには、長
時間使用の場合のシステム重量が小さい、発電を行うに
際して回転する機構がない（ジャイロ作用がない）、供
給原料が水である、供給原料を再利用することができ
る、などの利点から、水蒸気電解で水から得た水素と酸
素とにより燃料電池で発電するシステムが用いられる。2. Description of the Related Art A power supply system for a spaceship or the like has a small system weight when used for a long time, has no mechanism for rotating when generating power (no gyro effect), and has a feedstock of water. A system that uses a fuel cell to generate electricity by using hydrogen and oxygen obtained from water by steam electrolysis is used because of the advantage that it can be reused.

【０００３】このような発電システムの水蒸気電解に用
いられる水蒸気電解セルの構成及びその原理図を図３に
示す。ここで使用している固体電解質１１には、イット
リアで安定化させたジルコニア（ＹＳＺ：Yttria Stab
ilized Zirconia）を用いている。このＹＳＺは、酸素
イオン（Ｏ2-）だけを選択的に透過する性質をもってお
り、図３に示すように、負（カソード）極１２側に水蒸
気（Ｈ2Ｏ），正（アノード）極１３側に酸素（Ｏ2）を
各々供給し、外部の直流電源１４より電流を流すことに
より、固体電解質１１中に酸素イオン（Ｏ2-）だけが移
動するようになっている。FIG. 3 shows the structure and principle of a steam electrolysis cell used for steam electrolysis of such a power generation system. The solid electrolyte 11 used here is zirconia stabilized by yttria (YSZ: Yttria Stab).
ilized Zirconia) is used. The YSZ is has a property of selectively transmitting only the oxygen ions (O 2-), as shown in FIG. 3, a negative (cathode) vapor to electrode 12 side (H 2 O), positive (anode) electrode 13 By supplying oxygen (O 2 ) to each side and passing a current from an external DC power source 14, only oxygen ions (O 2− ) move into the solid electrolyte 11.

【０００４】つまり、負極１２側に供給された水蒸気
（Ｈ2Ｏ）は、酸素イオン（Ｏ2-）をうばわれて水素
（Ｈ2）のみとなり、一方、固体電解質１１中を移動し
た酸素イオン（Ｏ2-）は、正極１３で電子（ｅ-）を放
出して酸素（Ｏ2）となる。従って、固体電解質１１に
ＹＳＺを用いて、水蒸気（Ｈ2Ｏ）を酸素（Ｏ2）と、水
素（Ｈ2）とに電気分解（電解）することにより、水素
（Ｈ2）を得るのである。That is, the water vapor (H 2 O) supplied to the negative electrode 12 side is depleted of oxygen ions (O 2− ) to become only hydrogen (H 2 ), while the oxygen ions that have moved in the solid electrolyte 11 (O 2− ) releases electrons (e − ) at the positive electrode 13 to become oxygen (O 2 ). Therefore, hydrogen (H 2 ) is obtained by electrolyzing (electrolyzing) steam (H 2 O) into oxygen (O 2 ) and hydrogen (H 2 ) using YSZ as the solid electrolyte 11. .

【０００５】また、同様なセル構造を有する固体電解質
燃料電池の一例を、図４に示す。同図に示すように、固
体電解質２１を中央にして両面に負（カソード）極２２
及び正（アノード）極２３を設け、各々の電極２２，２
３に水素（Ｈ2），酸素（Ｏ2）を供給している。ここ
で、正極２３側に供給された燃料中の水素（Ｈ2）は、
図４に示すように、その正極２３上で水素イオン化さ
れ、水素イオン（Ｈ+）は固体電解質２１中を水の介在
のもと、Ｈ+・ｘＨ2Ｏとして負極２２側へ移動する。負
極２２上で酸化剤中の酸素（Ｏ2）及び外部回路２４を
流通してきた電子（ｅ-）と反応して水（Ｈ2Ｏ）を生成
し、燃料電池外へ排出される。この時、外部回路２４を
流通した電子（ｅ-）の流れを直流の電気エネルギーと
して利用するのである。FIG. 4 shows an example of a solid oxide fuel cell having a similar cell structure. As shown in the figure, the negative electrode (cathode) 22 is formed on both sides with the solid electrolyte 21 as the center.
And a positive (anode) electrode 23 are provided, and each electrode 22, 2
Hydrogen (H 2 ) and oxygen (O 2 ) are supplied to 3. Here, hydrogen (H 2 ) in the fuel supplied to the positive electrode 23 side is
As shown in FIG. 4, hydrogen ions are ionized on the positive electrode 23, and the hydrogen ions (H + ) move to the negative electrode 22 side as H + · xH 2 O in the solid electrolyte 21 under the presence of water. On the negative electrode 22, it reacts with oxygen (O 2 ) in the oxidant and electrons (e − ) flowing through the external circuit 24 to generate water (H 2 O), which is discharged to the outside of the fuel cell. At this time, the flow of electrons (e − ) flowing through the external circuit 24 is used as direct current electrical energy.

【０００６】[0006]

【発明が解決しようとする課題】前述したようなセル
は、ＹＳＺ層の表面に電極材のスラリを塗布した後、焼
成することにより、ＹＳＺ層上に電極材層を設けてい
る。In the cell as described above, the electrode material layer is provided on the YSZ layer by applying the slurry of the electrode material on the surface of the YSZ layer and then firing it.

【０００７】ところが、ＹＳＺと電極材との線膨脹係数
に差が在りすぎると、熱応力により、ＹＳＺ層が損傷し
てしまい、セルとしての使用が不可能になってしまう。However, if there is an excessive difference in the coefficient of linear expansion between YSZ and the electrode material, the YSZ layer will be damaged by thermal stress, making it impossible to use it as a cell.

【０００８】[0008]

【課題を解決するための手段】前述した課題を解決する
ため、本発明は、安定化ジルコニア層に電極となる電極
材層を設けた後、前記電極材層に当該電極材層よりも前
記安定化ジルコニア層寄りの線膨脹係数を有する保護材
層を設け、これを焼成することにより、セルを製造する
のである。In order to solve the above-mentioned problems, the present invention provides a stabilized zirconia layer having an electrode material layer serving as an electrode, and the electrode material layer is more stable than the electrode material layer. The cell is manufactured by providing a protective material layer having a linear expansion coefficient close to that of the zirconia oxide layer and firing the protective material layer.

【０００９】[0009]

【作用】前述した手段によるセルの製造方法では、安定
化ジルコニア層に電極材層を設けた後、電極材層よりも
安定化ジルコニア層寄りの線膨脹係数を有する保護材層
を電極材層に設けてから焼成するので、安定化ジルコニ
ア層に生じる熱応力が低減する。In the method of manufacturing a cell by the above-mentioned means, after the electrode material layer is provided on the stabilized zirconia layer, the protective material layer having a linear expansion coefficient closer to the stabilized zirconia layer than the electrode material layer is formed on the electrode material layer. Since it is provided and fired, the thermal stress generated in the stabilized zirconia layer is reduced.

【００１０】[0010]

【実施例】本発明によるセルの製造方法の一実施例を図
１，図２に基づいて説明する。なお、図１は、内周面に
アノード極を設ける場合のＹＳＺ管の一部を破断した側
面図、図２は、外周面にカソード極を設ける場合のＹＳ
Ｚ管の一部を破断した側面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cell manufacturing method according to the present invention will be described with reference to FIGS. 1 is a side view in which a part of the YSZ tube is cut when the anode electrode is provided on the inner peripheral surface, and FIG. 2 is a YSZ tube when the cathode electrode is provided on the outer peripheral surface.
It is the side view which fractured | ruptured a part of Z pipe.

【００１１】図１に示すように、ＹＳＺ管１の内周面
に、ＬａＳｒＭｎＯ3，ＬａＳｒＣａＭｎＯ3，ＬａＣａ
Ｃｏ，ＬａＣａＭｎＯ3，などのアノード極となるアノ
ード材スラリ２を塗布した後、このアノード材スラリ２
の表面に保護材層となるＹＳＺスラリ４を塗布し、１０
００〜１５００℃の温度で焼成して、セルを製造する。As shown in FIG. 1, on the inner peripheral surface of the YSZ tube 1, LaSrMnO 3 , LaSrCaMnO 3 , LaCa is formed.
After coating the anode material slurry 2 such as Co, LaCaMnO 3 which becomes the anode electrode, the anode material slurry 2
Apply YSZ Slurry 4 as a protective material layer on the surface of the
A cell is manufactured by firing at a temperature of 00 to 1500 ° C.

【００１２】これにより、ＹＳＺ管１にアノード材スラ
リ２のみを塗布・焼成する場合よりも、ＹＳＺ管１に生
じる熱応力が低減するのである。As a result, the thermal stress generated in the YSZ tube 1 is reduced as compared with the case where only the anode material slurry 2 is applied to the YSZ tube 1 and fired.

【００１３】この際に使用されるＹＳＺスラリ４は、焼
成後２０〜４０％程度の気孔率を有するようＹＳＺ粉体
を所定の粒径に調整したものをスラリ化しているので、
電極へのガス拡散は、セル性能に影響を与えるほど低下
しないようになっている。The YSZ slurry 4 used at this time is made into a slurry by adjusting the YSZ powder to a predetermined particle size so as to have a porosity of about 20 to 40% after firing.
The gas diffusion to the electrodes is such that it does not degrade enough to affect cell performance.

【００１４】また、図２に示すように、ＹＳＺ管１の外
周面に、ＮｉＯ／ＹＳＺ，ＮｉＯ／ＭｇＡｌ2Ｏ4，など
のカソード極となるカソード材スラリ３を塗布した後、
このアノード材スラリ３の表面にＹＳＺスラリ４を塗布
し、１０００〜１５００℃の温度で焼成すれば、前述し
た場合と同様にＹＳＺ管１に生じる熱応力を低減させな
がらセルが製造されるのである。Further, as shown in FIG. 2, after applying a cathode material slurry 3 such as NiO / YSZ, NiO / MgAl 2 O 4 , etc., which serves as a cathode electrode, to the outer peripheral surface of the YSZ tube 1,
If the YSZ slurry 4 is applied to the surface of the anode material slurry 3 and fired at a temperature of 1000 to 1500 ° C., the cell is manufactured while reducing the thermal stress generated in the YSZ tube 1 as in the case described above. .

【００１５】なお、本実施例では、ＹＳＺ管１を用いた
が、平板状のＹＳＺ膜でも同様な効果が得られる。本実
施例では、ＹＳＺを用いたが、安定化ジルコニアであれ
ば良い。本実施例では、保護材層としてＹＳＺスラリ４
を用いたが、電極材層よりも安定化ジルコニア層寄りの
線膨脹係数を有する保護材層であれば良い。Although the YSZ tube 1 is used in this embodiment, the same effect can be obtained with a flat YSZ film. In this embodiment, YSZ is used, but any stabilized zirconia may be used. In this embodiment, the YSZ slurry 4 is used as the protective material layer.
However, any protective material layer having a linear expansion coefficient closer to the stabilized zirconia layer than the electrode material layer may be used.

【００１６】[0016]

【発明の効果】前述したように、本発明によるセルの製
造方法では、安定化ジルコニア層に電極材層を設けた
後、電極材層よりも安定化ジルコニア層寄りの線膨脹係
数を有する保護材層を設けてから焼成するので、安定化
ジルコニア層に生じる熱応力が低減し、安定化ジルコニ
ア層に損傷を与えることなくセルを製造することができ
る。As described above, in the method for manufacturing a cell according to the present invention, after the electrode material layer is provided on the stabilized zirconia layer, the protective material having a linear expansion coefficient closer to the stabilized zirconia layer than the electrode material layer is. Since firing is performed after the layer is provided, the thermal stress generated in the stabilized zirconia layer is reduced, and the cell can be manufactured without damaging the stabilized zirconia layer.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明によるセルの製造方法の一実施例におけ
る内周面にアノード極を設ける場合のＹＳＺ管の一部を
破断した側面図である。FIG. 1 is a partially cutaway side view of a YSZ tube when an anode electrode is provided on an inner peripheral surface in an embodiment of a cell manufacturing method according to the present invention.

【図２】本発明によるセルの製造方法の他の実施例にお
ける外周面にカソード極を設ける場合のＹＳＺ管の一部
を破断した側面図である。FIG. 2 is a side view in which a part of a YSZ tube is cut away when a cathode electrode is provided on the outer peripheral surface in another embodiment of the cell manufacturing method according to the present invention.

【図３】水蒸気電解の原理図である。FIG. 3 is a principle diagram of steam electrolysis.

【図４】燃料電池の原理図である。FIG. 4 is a principle diagram of a fuel cell.

【符号の説明】[Explanation of symbols]

１ ＹＳＺ管 ２ アノード材スラリ ３ カソード材スラリ ４ ＹＳＺスラリ 1 YSZ tube 2 Anode material slurry 3 Cathode material slurry 4 YSZ slurry

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 安定化ジルコニア層に電極となる電極材
層を設けた後、前記電極材層に当該電極材層よりも前記
安定化ジルコニア層寄りの線膨脹係数を有する保護材層
を設け、これを焼成してなることを特徴とするセルの製
造方法。1. After providing an electrode material layer to be an electrode on the stabilized zirconia layer, a protective material layer having a linear expansion coefficient closer to the stabilized zirconia layer than the electrode material layer is provided to the electrode material layer, A method for producing a cell, which comprises firing the same.
JP5219404A 1993-09-03 1993-09-03 Manufacture of cell Withdrawn JPH0773888A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5219404A JPH0773888A (en) 1993-09-03 1993-09-03 Manufacture of cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5219404A JPH0773888A (en) 1993-09-03 1993-09-03 Manufacture of cell

Publications (1)

Publication Number Publication Date
JPH0773888A true JPH0773888A (en) 1995-03-17

Family

ID=16734881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5219404A Withdrawn JPH0773888A (en) 1993-09-03 1993-09-03 Manufacture of cell

Country Status (1)

Country Link
JP (1) JPH0773888A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013074656A1 (en) * 2011-11-15 2013-05-23 Saint—Gobain Ceramics & Plastics, Inc. Solid oxide fuel cell interconnect cells

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013074656A1 (en) * 2011-11-15 2013-05-23 Saint—Gobain Ceramics & Plastics, Inc. Solid oxide fuel cell interconnect cells
US8921007B2 (en) 2011-11-15 2014-12-30 Saint-Gobain Ceramics & Plastics, Inc. Solid oxide fuel cell interconnect cells

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